CURRICULUM VITAE

Hisham A. Nasr-El-Din Address 610 Richardson Bldg 3116 TAMU College Station, TX, 77843 USA Phone: (979) 862 1473 Citizenship: Canadian Email: hisham.nasreldin@pe.tamu.edu ACADEMIC QUALIFICATIONS: 1984 - Ph.D. Chemical Engineering, University of Saskatchewan, Canada. Thesis entitled: “Sampling from Slurry Pipelines". Scored 93% average in graduate classes. 1977 - M.Sc. Chemical Engineering, University of Cairo, Egypt. Thesis entitled: “Hysteresis and Instability of Active Biological Membranes". 1973 - B.Sc. (Hon.) Chemical Engineering, University of Cairo, Egypt. Ranked 1/75. PROFESSIONAL EXPERIENCE Department of Petroleum Engineering, Texas A & M University 2010 to date: Professor and holder of John Edgar Holt Endowed Chair in petroleum engineering December 05, 2007 to date: Professor and Holder of Stephen Holditch Faculty Fellowship. Develop new courses on oilfield chemistry, formation damage, and well stimulation. Start building state-of-the-art labs on EOR and well treatments. Supervise nearly 30 graduate students and several post doctorates in Texas A&M and abroad. Initiate several new research projects dealing with acid fracturing, VES technology, formation damage, EOR, corrosion, drilling fluids, and cementing. Present lectures and courses and consult on these topics throughout the world. Work on several research proposals

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for major oil companies, service companies and chemical companies in the USA and abroad. Saudi Aramco Oil Company, Saudi Arabia. July 01, 2007 to December 03, 2007: Principal Professional March 31, 2006 to July, 01, 2007: Group Leader, Drilling and Recovery Group. Manage more than 22 senior scientists (PhD), 20 young engineers (BSc and MSc) and technicians (15). Responsible for all research projects dealing with downhole operations. This includes, but not limited to, acidizing, fracturing, formation damage, drilling, and cementing. October 01, 2001 to March 31, 2006: Senior Research Consultant, Supervisor of the Formation Damage and Stimulation Unit. Manage and supervise senior scientists (3), young engineers (25) and technicians (12) in addition to conducting various research projects. Co-supervise two master degrees and one Ph.D. degree. October 1, 1998 to September 30, 2001: Research Consultant, Group Leader: Formation Damage, Stimulation, Fracturing and Conformance Control. Lead a group of scientists, engineers (nearly 25) and 8 technicians. Investigate microbial corrosion by SRB. Evaluate chemical and mechanical methods to remove iron sulfide scale, examine corrosion inhibition during acidizing deep gas wells. Evaluate water shut-off techniques using gels, e.g., H2Zero system. Examine viscoelastic surfactants and their use in the oil industry. Developed a new scale squeeze treatment for a sandstone reservoir in Saudi Arabia. Design acid treatment for acid-sensitive for a deep gas sandstone reservoir. Determine formation damage due to drilling and completion fluids. Design stimulation programs to acidize carbonate and sandstone reservoirs (oil and deep gas wells). Study flow of acids in radial cores and mathematical modelling of acidizing sandstone reservoirs. October 1, 1996 to September 30, 1998: Science Specialist. Evaluate sand consolidation chemicals. Assess field application of various acidizing jobs. Conduct several research projects on special acid formulas, e.g., acid-in-diesel emulsions, and in-situ gelled acids (VCA, SDA, EAS). Determine propagation of mud acids in sandstone cores using 19F NMR. Examine borate-based gels for wellbore diversion and fracturing. Study cross-linking of polyacrylamide-based polymers using organic cross-linkers. Evaluate various techniques to improve the quality of injection and produced waters. Investigate various monomers/polymers to reduce relative permeability to water (relative permeability modifiers). Examine acid-cement interactions. Investigate potential formation damage due to fracturing fluids. October 1, 1994 to October 1, 1996: Senior Scientist. Supervised a group of seven professionals (chemists and chemical engineers) and eight technologists to conduct applied research projects. Designed a novel acid

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treatment to restore the injectivity of damaged wells in a sandstone reservoir. The treatment was applied successfully in eighty wells. Designed a water shut-off treatment using polyacrylamide and chrome acetate technology. Developed a stimulation procedure to treat sour wells and remove biomass generated by sulfate reducing bacteria (SRB). Contributed to the design and field application of gravel packing in sandstone reservoirs. Developed retarded acid systems to stimulate tight carbonate reservoirs. Evaluated acid additives including iron control agents (sequestering agents), hydrogen sulfide scavengers, water-wetting agents and mutual solvents. Tested various cationic polymers (drag reducers) to increase the injectivity of water disposal wells. Studied flow of biocides and corrosion inhibitors in sandstone formations. Designed a new chemical treatment to remove organic (asphaltene) and inorganic materials (calcium carbonate and iron sulfide), which reduce the productivity of several wells in a carbonate reservoir. September 20, 1992 to October 1, 1994: Scientist I. Conducted research projects on soil remediation using the alkali/surfactant/polymer process. Studied the rheological properties of water-soluble polymers (polyacrylamide and xanthan gum) used in oil field operations. Evaluated various gelling systems to reduce water production and improve sweep efficiency. Examined various properties of aqueous surfactant solutions including: formation of a liquid crystal phase in anionic surfactant solutions and the cloud point of nonionic surfactants. Evaluated various clay stabilizers (cationic polymers). Assessed various methods for sand wash-out. Studied fouling in heat exchangers. Evaluated the efficiency of several desalters and optimize the type and concentration of the demulsifier used. Duties also included training research engineers (3) and technologists (4). Department of Chemical Engineering, University of Alberta, Canada. May 1, 1990 to date: Adjunct Professor. Conducted joint research projects on oil-sand processing including: solid-liquid mixing, flow of slurries in pipelines, solid-liquid separation in inclined plate settlers, solids distribution in manifolds, and flow of dry solids and slurries in rotary drums. Examined the diffusion of surfactants in polymer solutions. Performed research projects on fractionation of pulp, and adsorption of surfactants on reservoir rocks. Co-supervised a M.Sc. (R.S. MacTaggart, 1992) and a Ph.D. (W. Kwok, 1993). Petroleum Recovery Institute, Calgary, Alberta, Canada. October 1, 1990 to September 15, 1992: Staff Research Engineer. Examined dispersion in porous media, stability of water-soluble polymers at elevated temperatures, gels for profile modification, fines migration in sandstone reservoirs, and modelling of chemical flooding (the alkali/surfactant/polymer process).

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August 15, 1988 to September 30, 1990: Senior Research Engineer. Studied chemical flooding (alkali, micellar, and polymer flooding) in linear and radial cores, the effect of polymers and surfactants on the dynamic interfacial tension between acidic oils and various alkaline solutions, propagation of polymer, alkali and surfactant slugs in porous media. Trained several research technologists (3) and summer students (3). Department of Chemical Engineering, University of Alberta, Canada. February 1, 1987 to August 1988: Research Associate. Examined continuous separation of bidisperse suspensions in vertical and inclined channels, wall sampling from slurry systems, and measuring solids concentration profiles in solid-liquid mixing tanks. Department of Chemical Engineering, University of Ottawa, Canada. November 1985 to January 1987: Post-Doctoral Fellow. Conducted flow visualization experiments of radial oil displacement by water and alkaline solutions. Investigated dynamic interfacial tension between acidic oils and alkaline solutions, and evaluated various correlations to determine the electrical conductivity of solid-liquid systems. Department of Chemical Engineering, University of Saskatchewan, Canada. May 1984 to October 1985: Post-Doctoral Fellow. Developed a new conductivity probe for measuring local solids concentration in slurry systems. Measured local particle velocity and concentration in vertical and horizontal slurry pipelines. Investigated the effect of pipe fittings on solids distribution in slurry pipelines. September 1980 to April 1984: Graduate Student and Part-time Teaching Assistant. Assessed various sampling techniques to measure solids concentration and particle size distribution in slurry pipelines. Instructed Fluid Mechanics and Chemical Engineering Laboratories to the 3rd and the 4th year students. Department of Chemical Engineering, University of Cairo, Egypt. October 1973 to August 1980: Instructor. Studied mass transfer with chemical reaction in biological membranes. Taught heat, mass transfer and petroleum engineering to the 3rd and 4th year chemical engineering students.

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SCHOLARSHIPS 1980 - 1984 University of Saskatchewan Scholarship. 1968 - 1973 University of Cairo Scholarship. UNDERGRADUATE INDUSTRIAL EXPERIENCE 1979 Paper mill, Sweden, summer training. 1976 Nordsjo (paint co.), Sweden, summer training. 1972 Gupco (petroleum co.), Egypt, summer training. AWARDS SPE Distinguished Achievement Award for Petroleum Engineering Faculty, 2013 Texas A&M University – TEES Faculty Fellow Award: Award is presented for individuals who have displayed continued excellence in teaching, research and service, 2012 Texas A&M University - Appointed holder of the John Edgar Chair, 2010 Texas A&M University – Charles H. Barclay Faculty Fellow: Award is presented for individuals who have displayed continued excellence in teaching, research and service, 2010 SPE Outstanding Associate Editor (SPEJ) Award, 2009 SPE Production and Operations Award, 2009 SPE Outstanding Associate Editor (SPEJ) Award, 2008 SPE Outstanding Technical Editor (SPEPO) Award, 2008 SPE Distinguished Member Award, 2007 SPE Production and Operations Regional Award, 2006 Senior Vice President Recognition Award for conducting research and introducing new technologies and filing several patents. As result, a cost saving of more than $ 30 million was realized, 2005. Vice President Recognition Award for significant contributions for safe and successful completion of the first 100 fracture treatments in Saudi Arabia, 2002.

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Vice President Recognition Award for training and mentoring of young Saudi engineers, 2002. Senior Vice President Recognition Award for the design and field application of a novel emulsified scale squeeze treatment to mitigate calcium carbonate scale in a low pressure, low temperature sandstone reservoir in Saudi Arabia, 2001. Senior Vice President Recognition Award for the design and field application of emulsified acid treatment to stimulate deep gas reservoirs in Saudi Arabia, 2000. Senior Vice President Recognition Award for the design and field application of a novel stimulation process to treat oil producer wells in a newly developed carbonate field in Saudi Arabia, 1998. Senior Vice President Recognition Award for the design and field application of a novel stimulation process to treat Power Water Injectors in a newly developed sandstone oil field in central Saudi Arabia, 1995. Outstanding Paper Presentation - Paper entitled: Liquid Crystal Formation and its Effect on the Flow Properties of an Anionic Surfactant - presented at the 85th AOCS Meeting & Expo, Atlanta, Georgia, USA, May 8-12, 1994. PROFESSIONAL MEMBERSHIP AND ACTIVITIES Member of the Society of Petroleum Engineers (SPE) and the Canadian Society for Chemical Engineering (CSChE). Reviewer for the SPE Production and Operations, SPE J., the Canadian J. of Chemical Engineering, Chemical Engineering Science, Canadian J. Petroleum Technology, AIChE J., I&E Chemistry Research, International J. of Multiphase Flow, Journal of Energy Resources Technology and J. of Petroleum Science & Engineering. Chaired several sessions in SPE, CSChE, and AOCS conferences. Invited to give presentations at various universities, services companies, and research organizations all over the globe. Acting as a member for the SPE selection committees for Oilfield Chemistry, Oilfield Corrosion, and Well Stimulation. Selected as a Committee Member for SPE ATW on “Well Acidizing,” Malaysia, Nov. 2004. Selected to chair SPE ATW on “Oilfield Chemistry,” held in Bahrain, December 2004.

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Selected as a Committee Member for SPE ATW on “Produced Water Re-injection,” Biarritz, France, June 20-24, 2005. Selected as a Discussion Leader for SPE ATW on “Matrix Acidizing,” Moscow, Russia, 31st October - 3rd November 2005. Selected as a Discussion Leader for SPE ATW on “Water and Gas Shut Off and the Gulf States,” Muscat, Oman, 21-24 January, 2007. Selected as a Committee Member for SPE ATW on "Chemical Methods of Reducing Water Production," San Antonio, Texas, 4 - 6 March 2007. Consulted for major oil and gas companies all over the world. Gave short courses in Egypt, Malaysia, The Netherlands, Norway, Saudi Arabia, Mexico, United States of America, and other places Applied for five new patents on oilfield chemicals, one was issued on December 2003 and the second one was issued on February 2008, the others are in the review process. CONTINUING EDUCATION Attended SPE courses on:

Formation Damage

Acidizing

Well Completion

Coiled Tubing Applications

Fracturing

Completion Fluids

Metallurgy

Book Chapters

1. Nasr-El-Din, H.A. Additives for Acidizing Fluids: Their Functions, Interactions, and Limitations. Chapter 10, in SPE Monogragh: Acidizing Fundamentals, Ed. C.T. Montgomery, S.A. Ali, and L. Kalfayan, in press, 2014.

2. Jaeger, P.T., M.B. Al-Otaibi, H.A. Nasr-El-Din. High-Pressure Application in Enhanced Crude Oil Recovery. In Industrial High Pressure Applications: Processes, Equipment and Safety, Eggers, Rudolf, ed., Chapter 7, 145-168, 2012.

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3. Nasr-El-Din, H.A., E. Samuel, and M. Samuel: “Application of Viscoelastic Surfactants in Well Stimulation Treatments,” in: Recent Innovation in Oil and gas recovery, István Lakatos (Ed.), Progress in Oilfield Chemistry, Vol. 8, Akadémiai Kiadó, Budapest, pp. 43-58, 2009.

4. Taylor, K.C. and H.A. Nasr-El-Din, "Chemistry of Iron Control Chemicals Used in Acid Stimulation Treatments", in: Smart Fields, Smart Wells and Smart Technologies, István Lakatos (Ed.), Progress in Oilfield Chemistry, Vol. 7, Akadémiai Kiadó, Budapest, pp. 143-156, 2007.

5. Nasr-El-Din, H.A., “Surfactants Used in Acid Stimulation,” In Surfactants, Fundamentals and Applications in the Petroleum Industry, L.L. Schramm (Editor), Cambridge Press, Chapter 9, 329-364, 2000.

6. Nasr-El-Din, H.A. and K.C. Taylor, “The Role of Surfactants in Enhanced Oil

Recovery”, in "Micelles, Microemuslions and Monolayers: Science and Technology", D.O. Shah (Editor), Chapter 11, 249-287, 1998.

7. Nasr-El-Din, H.A., “Permeability Decline Due to Flow of Dilute Suspensions Through Porous Media" in Suspensions Fundamental and Applications in the Petroleum Industry, L.L. Schramm (Editor), American Chemical Society Books Series 251, Washington, DC, Chapter 6, 289-319, 1996.

8. Nasr-El-Din, H.A. and K.C. Taylor, “Rheology of Water-Soluble Polymers Used in Enhanced Oil Recovery", in Multiphase Reactor and Polymerization System Hydrodynamics, N.P. Cheremisinoff (Editor), Gulf Publishing Company, Chapter 24, 615-668, 1996.

9. Nasr-El-Din, H.A. "Flow of Slurries in Pipelines" in Suspensions Fundamental and Applications in the Petroleum Industry, L.L. Schramm (Editor), American Chemical Society Books Series 251, Washington, DC, Chapter 4, 177-255, 1996.

10. Nasr-El-Din, H.A., A. Afacan and J.H. Masliyah, “Flow of Dry Solids and Slurries in Rotary Drums", in Multiphase Reactor and Polymerization System Hydrodynamics, N.P. Cheremisinoff (Editor), Gulf Publishing Company, Chapter 9, 193-255, 1996.

11. Taylor, K. and H.A. Nasr-El-Din, "Dynamic Interfacial Tension of Crude

Oil/Alkali/Surfactant/Polymer Systems", in AOCS Monograph, "Dynamic Properties of Interfaces and Association Structures", D.O. Shah (Editor), Chapter 4, 80-125, 1996.

12. Nasr-El-Din, H.A., D. Shriemer and A. Abd-El-Aziz, "Liquid Crystal Formation

and its Effect on the Flow Properties of an Anionic Surfactant", in AOCS Monograph, “Dynamic Properties of Interfaces and Association Structures", D.O. Shah (Editor), Chapter 11, 206-230, 1996.

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13. Nasr-El-Din, H.A., "Recovery of Residual Oil Using the Alkali, Surfactant, Polymer Process", in AOCS Monograph, "Dynamic Properties of Interfaces and Association Structures", D.O. Shah (Editor), Chapter 15, 297-331, 1996.

14. Nasr-El-Din, H.A., “Fluid Dynamics of Oil-Water-Sand Systems", in

Emulsions Fundamental and Applications in the Petroleum Industry, L.L. Schramm (Editor), American Chemical Society Books Series 231, Chapter 5, 171-217, 1992.

15. Nasr-El-Din, H.A., "Sampling from Slurry Pipelines", in Sewage and Wastewater Treatment", Vol. 3, N.P. Cheremisinoff (Editor), Gulf Publishing Company, Chapter 14, 389-422, 1989.

PAPERS PUBLISHED IN REFEREED JOURNALS Published:

1. Rostami, A., D.T. Nguyen, and H.A. Nasr-El-Din. Improving Relative Permeability to Gas in Tight Sandstone Formations by Using Microemulsions. Paper IPTC 17675. Accepted for publication in SPE Production and Operations, 2015.

2. Nasr-El-Din, H.A., H. Dana, V. Tomos, T. Stanitzek, C.A. de Wolf. Field Treatment to Stimulate an Oil Well in a Sandstone Formation Using a Novel, Low Corrosive, Environmentally Friendly Fluid. Paper SPE 168163. Accepted for publication in J. Can. Pet. Technol., 2015.

3. Shu, Y., G. Wang, H.A. Nasr-El-Din and J. Zhou. Interactions of Fe(III) and VES-based Acids. Accepted for publication in SPE Production and Operations, 2015.

4. Zhou, L., H.A. Nasr-El-Din. Interactions of a Single-Stage Sandstone Acid System with Clays. Paper SPE 164472. Accepted for publication in SPEJ, 2015.

5. Zakaria, A., H.A. Nasr-El-Din, M. Murtaza. Predicting the Performance of the Acid Stimulation Treatments in Carbonate Reservoirs using Non-Destructive Tracer Tests. Accepted for publication in SPEJ, 2015.

6. Zakaria, Ahmed, H.A. Nasr-El-Din, M. Ziauddin. Flow of Emulsified Acid in Carbonate Rocks. Accepted for publication in Industrial & Engineering Chemistry Research, 2015.

7. Lyons, J., H. Nasrabadi, H.A. Nasr-El-Din. A Novel Pore-scale Thermal Fracture

Acidizing Model with Heterogeneous Rock Properties. Accepted for publication in SPEJ, 2015.

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8. Farid, A. and H.A. Nasr-El-Din. A Comprehensive Model to History Match and Predict Gas/Water Production from Coal. Accepted for publication in Int. J. Coal Geology, 146 (0): 79-90, 2015.

9. Gomaa, A. and H.A. Nasr-El-Din. Effect of Elastic Properties on the Propagation of Gelled and In-Situ Gelled Acids in Carbonate Cores. J. Pet. Sci. Eng., 127: 101-108, 2015.

10. Mahmoud, M.A. and H.A. Nasr-El-Din. Challenges during Shallow and Deep Carbonate Reservoirs Stimulation. JERT, 137 (01), 12902-1 to 12902-8, 2015.

11. Mahmoud, M.A., H.A. Nasr-El-Din and C.A. de Wolf. High-Temperature Laboratory Testing of Illitic Sandstone Outcrop Cores with HCl-Alternative Fluids. Paper SPE 147395, SPEPO, 30 (01): 43-51, 2014.

12. Al-Sadat, W., F. Chang, H.A. Nasr-El-Din, M.S. Nasser, I.A. Hussein. Laboratory Evaluation of the Effects of Additives and pH on the Thermorheological Behavior of a Viscoelastic Zwitterionic Surfactant Used in Acid Stimulation. J. Pet. Sci. Eng., 122: 458-467, 2014.

13. Haghshenas, A. and H.A. Nasr-El-Din. Fracturing Fluids: A Feasibility Study of

Reusing Flowback Fluids in Stimulation Treatments. Hydraulic Fracturing Journal, 1 (4): 8-20, 2014.

14. Al-Sadat, W., F. Chang, H.A. Nasr-El-Din, M.S. Nasser, I.A. Hussein.

Rheology of a Viscoelastic Zwitterionic Surfactant Used in Acid Stimulation: Effects of Surfactant and Electrolyte Concentration. J. Petroleum Science and Engineering, 124: 341-349, 2014.

15. Mahmoud, M.A., H.A. Nasr-El-Din. Modeling Flow of Chelating Agents. Arab J. Science & Engineering, 39 (12): 9239-9248, 2014.

16. Al-Ghamdi, A.H., M.A. Mahmoud, G. Wang, A.D. Hill, H.A. Nasr-El-Din. Acid

Diversion Using Viscoelastic Surfactants: The Effects of Flow Rate and Initial Permeability Contrast. Paper SPE 124564, SPEJ, 19 (6): 1203-1216, 2014.

17. Nasralla, R.A. and H.A. Nasr-El-Din. Impact of Cation type on Oil Recovery during Waterflooding in Sandstone Reservoirs. J. Pet. Sci. Eng., 122; 384-395, 2014.

18. Rabie, A.I., D. Shedd and H.A. Nasr-El-Din. Measuring the Reaction Rate of

Lactic Acid with Calcite and Dolomite Using the Rotating Disk Apparatus. Paper SPE 140167, SPEJ, 19 (6): 1192-1202, 2014.

19. Haghshenas, A. and H.A. Nasr-El-Din. Effect of Dissolved Solids on Reuse of Produced Water at High Temperature in Hydraulic Fracturing Jobs. Journal of Natural Gas Science and Engineering, 21, 316-325, 2014.

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20. Al-Yami, A., A. Wagle, H. Nasr-El-Din, Ahmad Al-Humaidi. Cement Formula to

Prevent Gas Migration Problems in HT/HP Wells. International J. Scientific & Engineering Research. 5 (6), 2014.

21. Shehata, A., M. Alobtaibi, H.A. Nasr-El-Din. Waterflooding in Carbonate Reservoirs: Does the Salinity Matter? SPEREE, 17 (3): 304-313, 2014.

22. Adejare, O.O., R.A. Nasralla, H.A. Nasr-El-Din. A Procedure for Measuring Contact Angles When Surfactants Reduce Interfacial Tension and Cause Oil Droplets to Spread. Paper SPE 160876, SPEREE, 17 (3) 365-372, 2014.

23. Al Moajil, A.M. and H.A. Nasr-El-Din. Removal of Manganese Tetraoxide Filter Cake Using Combination of HCl and Organic Acid. Paper SPE 165551, CJPT 53 (2): 122-130, 2014.

24. Sayed, M.A., A.I. Assem, H.A. Nasr-El-Din. Effect of Presence of Crude Oil on the Performance of Emulsified Acids. Paper SPE 152844. SPEPO, 29 (1): 29-41, 2014.

25. Nasralla, R.A., H.A. Nasr-El-Din. Double-Layer Expansion: Is It A Primary

Mechanism of Improved Oil Recovery by Low-Salinity Waterflooding? SPE paper 154334, SPEREE, 17 (1): 49-59, 2014.

26. Elkatatny, S.M. and H.A. Nasr-El-Din. Removal of water-based filter cake and stimulation of the formation in one-step using an environmentally friendly chelating agent. Int. J. Oil Gas and Coal Technology 7(2): 169-188, 2014.

27. Zakaria, A.S., M.A. Sayed, H.A. Nasr-El-Din. New Insights into propagation of Emulsified Acids in Vuggy Dolomitic Rocks. Paper SPE 163288. SPEJ, 19 (1): 150-160, 2013.

28. He, J., I.M. Mohamed, and H.A. Nasr-El-Din. Potential Formation Damage Due

to Preparing HCI Acids Using Seawater. Canadian Energy Technology and Innovation Journal, 1(4): 56-63 (Nov.) 2013.

29. He, J., D. Arensman, and H.A. Nasr-El-Din. Effectiveness of Calcium Sulfate

Scale Inhibitors in Spent Hydrochloric Acid/Seawater System. Journal of Petroleum & Environmental Biotechnology 4(5), 2013.

30. Nasr-El-Din, H.A., C.A. de Wolf, T. Stanitzek, A. Alex, S. Gerdes, N.R. Lummer,

Field Treatment To Stimulate A Deep, Sour, Tight Gas Well Using A New, Low Corrosive And Environmentally Friendly Fluid. Paper SPE 163332, SPEPO, 28(3): 277-285, 2013.

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31. Mohamed, I.M. and H.A. Nasr-El-Din. Fluid/Rock Interactions during CO2 Sequestration in Deep Saline Carbonate Aquifers: Lab and Modeling Studies. SPE 151142, SPEJ, 18(3): 468-485, 2013.

32. El-Monier, I.A. and H.A. Nasr-El-Din. A Study of Environmentally Friendly Clay Stabilizer. CETI 1(3): 21-29: (June) 2013.

33. Sayed, M.A., H.A. Nasr-El-Din, H. Nasrabadi. Reaction Rate of Emulsified Acids

and Dolomite. Paper SPE 151815, Journal of Canadian Petroleum Technology, 52(3): 164-175, 2013.

34. Elkatatny, S.M., Mahmoud, M.A., and H.A. Nasr-El-Din. Filter Cake Properties of

Water-Based Drilling Fluids under Static and Dynamic Conditions Using CT Scan. Journal of Energy Resources Technology, 135(4): 042201 (9 pages) 2013.

35. Nasralla, R.A., Alotaibi, M.B., H.A. Nasr-El-Din. Oil Recovery during Secondary

and Tertiary Flooding Using Low Salinity Water in Sandstone Reservoirs. CETI Journal 1(3): 48-58, June, 2013.

36. Mohamed, I.M., He, J., and H.A. Nasr-El-Din. Permeability Reduction during

CO2 Injection in Sandstone Aquifers: Lab and Simulation Studies. Canadian Energy Technology and Innovation Journal 1(2): 70-80, 2013.

37. El-Monier, I.A. and H.A. Nasr-El-Din, T. Haper, R. Rossen. A New Environmentally Friendly Clay Stabilizer. SPEPO, 28(2): 145-153, 2013.

38. El-Monier, I.A., and H.A. Nasr-El-Din. A New Al/Zr-Based Stabilizer for High pH

Applications. J. Energy Resources Technology, 135(2):022903 (7 pages) 2013.

39. Nasralla, R.A., M.A. Bataweel, H.A. Nasr-El-Din. Investigation of Wettability Alteration by Low-Salinity Water in Sandstone Rock. Journal of Canadian Petroleum Technology, 52 (2): 144-154, 2013.

40. Pournik, M., Li, L., B. Smith, and H.A. Nasr-El-Din. Effect of Acid Spending on Etching and Acid Fracture Conductivity. Paper SPE 136217, SPEPO, 28(1): 46-54, 2013.

41. Mohamed, I.M., J. He, and H.A. Nasr-El-Din. Experimental Analysis of CO2 Injection on Permeability of Vuggy Carbonate Aquifers. J. Energy Resources Technology, 135(1): 013301 (7 pages) 2013.

42. Mohamed, I.M., J. He, and H.A. Nasr-El-Din. Effect of Brine Composition on

CO2/Limestone Rock Interactions during CO2 Sequestration. Journal of Petroleum Science Research, 2(1): 14-26, 2012.

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43. Yu, M., Y. Mu, G. Wang and H.A. Nasr-El-Din. Impact of High Temperatures on the Rheological Properties of Carboxybetaine Visco-Elastic Surfactant Based Acid: Experimental and Molecular Dynamics Simulation Studies. Paper SPE 142264, SPEJ, 17(4): 1119-1130, 2012.

44. Al Moajil, A.M. and H.A. Nasr-El-Din. Formation Damage Caused by Improper Mn3O4-based Filter Cake Cleanup Treatments. Paper SPE 144179, CJPT, 52(1): 64-74, 2013.

45. Rostami, A. and H.A. Nasr-El-Din. Optimization of a Solid-Acid Precursor for

Self-Destructing Filter Cake. Paper SPE 139087. SPEDC Journal, 27(3): 427-435, 2012.

46. Mohamed, I.M. and H.A. Nasr-El-Din. Permeability Alternation and Trapping Mechanisms during CO2 Injection in Homogenous Limestone Aquifers: Lab and Simulation Studies. Canadian Energy of Technology and Innovation Journal, 1 (1): 41-55, 2012.

47. Rabie, A.I, A.M. Gomma and H.A. Nasr-El-Din. HCl-Formic In-Situ Gelled Acids as Diverting Agents for Carbonate Acidizing: SPE 140138, SPEPO, 27(2): 170-184, 2012.

48. Elkatatny, S.M., M.A. Mahmoud, and H.A. Nasr-El-Din. A New Technique to Characterize Drilling Mud Filter Cake. SPE 144098, SPEDC, 27(2): 282-293, 2012.

49. Mahmoud, M.A., H.A. Nasr-El-Din, C.A. De Wolf, and J.N. LePage. Optimum Injection Rate of a New Chelate that can be used to Stimulate Deep Carbonate Reservoirs. Paper SPE 133497, SPEJ, 16(4): 968-980, 2011.

50. Rabie, A., A.M. Gomaa, and H.A. Nasr-El-Din. Reaction of In-situ Gelled Acids with Calcite: Reaction Rate Study. Paper SPE 133501, SPEJ 16(4): 981-992, 2011.

51. Yu, M., M. Mohmoud, H.A. Nasr-El-Din. Quantitative Analysis of an Amphoteric Surfactant in Acidizing Fluids and Coreflood Effluent, SPEJ, 16(4): 993-1001, 2011.

52. Alotaibi, M.B., R.A. Nasralla and H.A. Nasr-El-Din. Wettability Studies Using Low Salinity Water in Sandstone Reservoirs. Paper OTC-20718, SPEREE, 14(6) 713-725, 2011.

53. Alotaibi, M.B., H.A. Nasr-El-Din, J.J. Fletcher. Electrokinetics of limestone and

Dolomite Rock Particles. SPE 148701, SPEREE, 14(5): 594-603, 2011.

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54. Alotaibi, M.B., H.A. Nasr-El-Din. Electrokinetics of Limestone Particles and Crude Oil Droplets in Saline Solutions. SPE 151577, SPEREE, 14(5): 604-611, 2011.

55. Mahmoud, M., H.A. Nasr-El-Din, C.A. De Wolf, J.N. LePage, and J.H. Bemelaar: “Evaluation of a New Environmentally Friendly Chelating Agent for High-Temperature Applications,” SPE 127923, SPEJ, 16(3): 559-574, 2011.

56. Gomaa, A.M., M. Mahmoud, and H.A. Nasr-El-Din. A Study of Diversion Using

In-Situ Gelled Acid. Paper SPE 132535, SPEPO, 26(3): 278-290, 2011.

57. Gomaa, A.M., and H.A. Nasr-El-Din. Propagation of Regular HCl Acids in Carbonate Rocks: The Impact of an In-Situ Gelled Acid Stage. Journal of Energy Resources Technology, 133(2): 23101-23109, 2011.

58. LePage, J.N., C.A. De Wolf, J.H. Bemelaar, and H.A. Nasr-El-Din: “An Environmentally Friendly Stimulation Fluid for High Temperature Applications,” SPE 121709, SPEJ 16(1): 104-110, 2011.

59. Lei, G., Li, L., H.A. Nasr-El-Din. New Gel Aggregates for Water Shut-Off

Treatments. SPE 129960, SPEREE 14 (1): 120-128, 2011.

60. Pournik, M., M. Mahmoud and H.A. Nasr-El-Din: “A Novel Application of Closed Fracture Acidizing” SPE 124874, SPEPO, 26 (1): 18-29, 2011.

61. Li, L., H.A. Nasr-El-Din, J. Crews, K. Caweizel: “Impact of Organic Acids/Chelating Agents on Rheological Properties of Amidoamine Oxide Surfactant,” SPE 128091, SPEPO, 26 (1): 30-40, 2011.

62. Gomaa, A.M., Mahmoud, M.A., and Nasr-El-Din, H.A. Effect of Shear Rate on the Propagation of Polymer-Based In-Situ-Gelled Acids Inside Carbonate Cores. SPEPO, 26 (1): 41-54, 2011.

63. Jaeger, P.T., M.B. Al-Otaibi, H.A. Nasr-El-Din. Influence of Compressed Carbon Dioxide on the Capillarity of Gas-Crude Oil Reservoir Water System. Journal of Chemical & Engineering Data, 55, 5236-5251, 2010.

64. Al-Mutairi, S.H., A.D. Hill and H.A. Nasr-El-Din: “Tube Pickling Procedures: Mathematical Modeling and Case Studies,” SPE 93291, SPEJ, 15(3), 822-833, 2010.

65. Alkhaldi, M.H., H.A. Nasr-El-Din, S. Hemanta: “Kinetics of the Reaction of

Citric Acid with Calcite,” SPE 118724, SPEJ, 15(3), 704-713, 2010.

15

66. Al-Yami, A.S., H.A. Nasr-El-Din, A.S. Al-Humaidi, M.K. Al-Arfaj, S.H. Al-Saleh: “Effects of HCl Acid and Brines on Water Swelling Packers,” SPE 114812, SPEDC, 23(4) 322-327, 2010.

67. Al-Khaldi, M., H.A. Nasr-El-Din, H.K. Sarma: Application of Citric Acid in Acid

Stimulation Treatments. SPE 2009-015, CJPT, 48(8) 43-52, 2010. 68. Samuel, M., A. Mohsen, A. Bin Ejan, Y. Ooi, S. Ashraf, and H.A. Nasr-El-Din:

“A Novel α-Amylase Enzyme-Stabilizer for Applications at High Temperatures,” SPE 125024, SPEPO, 25(3) 398-408, 2010.

69. Gomaa, A., H.A. Nasr-El-Din: “New Insights into the Viscosity of Polymer-

Based In-Situ Gelled Acids,” SPE 121728, SPEPO, 25(3) 367-375, 2010.

70. Li, L., H.A. Nasr-El-Din, K. Cawiezel: “Rheological Properties of a New Class of Viscoelastic Surfactant,” SPE 121716, SPEPO, 25(3) 355-366, 2010.

71. Abdel Fatah, W. and H.A. Nasr-El-Din: “Acid Emulsified in Xylene: A Cost

Effective Treatment to Remove Asphaltene Deposition and Enhance Well Productivity,” SPEPO, 25(2) 151-154, 2010.

72. Al-Otaibi, M.B., H.A. Nasr-El-Din, A.D. Hill, A. Al-Moajil: “Optimum Method to

Remove Formate Drill-in Fluid Damage in Extended Reach Wells," SPEDC, 25(2): 253-262, 2010.

73. Al-Yami, A., H.A. Nasr-El-Din, A.S. Al-Humaidi, S.H. Al-Saleh, M. Al-Arfaj:

"Evaluation and Optimization of Low-Density Cement: Laboratory Studies and Field Applications,” SPEDC, 25 (1), 70-89, 2010.

74. Al-Muntasheri, G.A., Pacelli L.J. Zitha, and H.A. Nasr-El-Din: “A New Organic

Gel System for Water Control: A Computed Tomography Study,” SPEJ 15 (1), 197-207, 2010.

75. Al-Yami, A.S., H.A. Nasr-El-Din, M. Al-Shafei, M.A. Bataweel: “Impact of

Water-based Drilling-in Fluids on Solids Invasion and Damage Characteristics,” SPEPO 25(1), 40-49, 2010.

76. Al-Mutairi, S.H., H.A. Nasr-El-Din, A.D. Hill, A. Al-Aamri: “Effect of Droplet

Size on the Reaction Kinetics of Emulsified Acid with Calcite,” SPEJ 14(4) 606-616, 2009.

77. Al-Taq, A.A., A. Al-Sheikh, H.A. Nasr-El-Din: “Inhibition Performance of a

New Series of Mono/Diamine-based Corrosion Inhibitors for HCl Acid Solutions," SPEJ 14(4) 627-633, 2009.

16

78. Al-Otaibi, M.B., H.A. Nasr-El-Din, A.D. Hill: “Use of Ester as a Precursor to Clean Formate Drill-In Fluid Damage in Horizontal Wells,” SPEDC 24(3) 404-412, 2009.

79. Al-Muntasheri, G.A., H.A. Nasr-El-Din, K. Al-Noami, P.L.J. Zitha: “A Study of

Polyacrylamide Based Gels Crosslinked with Polyethyleneimine,” SPEJ, 14(2) 245-251, 2009.

80. Taylor, K.C., H.A. Nasr-El-Din: “Measurement of Acid Reaction Rates with

the Rotating Disk Apparatus," CJPTJ, 28(6), 66-70, 2009.

81. Nasr-El-Din, H.A., A.A. Zahrani, F.O. Garzon, C.A.F. Giraldo, I.M. Al-Hekami, and H.M. Al-Marri: “Acid Fracturing of Gas Wells Using Solid Acid: Lessons Learned From First Field Application," SPEPO, 24(2) 320-335, 2009.

82. Nasr-El-Din, H.A., A. Al-Mohammed, A. Al-Aamri, M. Al-Fahed, F. Chang:

"Quantitative Analysis of Reaction Rate Retardation in Surfactant-based Acids," SPEPO, 24(1), 107-116, 2009.

83. Nasr-El-Din, H.A., A. Al-Nakhli, S. Leopoldo, T. Walton, M. Van Domelen:

“Application of Cationic Surfactant-based Fluids for Acid Diversion," SPEPO, 24(1) 124-134, 2009.

84. Al-Taq, A., H.A. Nasr-El-Din, J.K. Beresky, K.M. Naimi S. Leopolodo, L.O.

Reddy: "Simultaneous Acid Diversion and Water Control in Carbonate Reservoirs: A Case History from Saudi Arabia," SPEREE, 11(5) 882-891, 2008.

85. Al-Mutairi, S.H., A.D. Hill, H.A. Nasr-El-Din: “Effect of Droplet Size, Emulsifier

Concentration and Acid Volume Fraction on the Rheological Properties and Stability of Emulsified Acid,” SPEPO, 23(4) 484-497, 2008.

86. Al-Muntasheri, G.A., H.A. Nasr-El-Din, and P.L.J. Zitha: "Gelation Kinetics

and Performance Evaluation of an Organically Crosslinked Gel at High Temperature and Pressure," SPEJ, 13(3) 337-345, 2008.

87. Tomson, M.B., A.T. Kan, F.G. Gongmin, S.D. Dong, H.A. Nasr-El-Din, H.A.

Al-Saiari, M. Al-Thubaiti: “Mechanistic Understanding of Rock/Phosphonate Interactions and the Effect of Metal Ions on Inhibitor Retention,” SPEJ, 13(3) 325-336, 2008.

88. Nasr-El-Din, H.A., Al-Mohammed, A., A. Al-Aamri, O. Al-Fuwaires: “Reaction

of Gelled Acids with Calcite,” SPEPO, 23(3) 353-361, 2008.

89. Nasr-El-Din, H.A., S.M. Al-Driweesh, J.B. Chesson, and A.S. Metcalf: “Fracture Acidizing: What Role Does Formation Softening Play in Production Response?,” SPEPO, 23(2) 184-191, 2008.

17

90. Nasr-El-Din, H.A. and A.S. Metcalf: “Workovers in Sour Environments: How

Do We Avoid Coiled Tubing Failures?” SPEPO, 23(2) 112-118, 2008.

91. Al-Muntasheri, G.A, H.A. Nasr-El-Din, J.A. Peters, P.L.J. Zitha: “Thermal Decomposition and Hydrolysis of Polyacrylamide Co-tert-butyl Acrylate,” European Polymer Journal, 44(4) 1225-1237, 2008.

92. Nasr-El-Din, H.A., A.H. Al-Ghamdi, A.A. Al-Qahtani and M.M. Samuel:

“Impact of Acid Additives on the Rheological Properties of Viscoelastic Surfactants,” SPEJ, 13(1) 35-47, 2008.

93. Al-Taq; A.A., H.A. Nasr-El-Din, T.A. Al-Shafai: “Method and Composition for

Forming Protective Precipitate on Cement Surfaces Prior to Formation Acidizing Treatment,” US patent # 7,328,746, Issued on February 12, 2008.

94. Al-Khaldi, M., H.A. Nasr-El-Din, S. Metha, A. Aamri: “Reaction of Citric Acid

with Calcite,” Chem. Eng. Sci., 62, 5880-5896, 2007.

95. Al-Muntasheri, G.A., H.A. Nasr-El-Din, and I.A. Hussein, “A Rheokinetic Study of an Organically Cross-Linked Polymeric Gel Used for Water Shut-off,” J. Pet. Sci. Eng., 59(1-2), 73-83, 2007.

96. Al-Mutairi, S.H., A.D. Hill and H.A. Nasr-El-Din: “Pickling Well Tubulars Using

Coiled Tubing: Mathematical Modeling and Field Application,” SPEPO, 22(3) 326-334, 2007.

97. Nasr-El-Din, H.A., M.B. Al-Otaibi, A.A. Al-Qahtani, and M. Samuel: “An

Effective Fluid Formulation to Remove Drilling Fluid Mud Cake in Horizontal and Multi-lateral Wells,” SPEDC, 22(1) 26-32, 2007.

98. Nasr-El-Din, H.A. and M. Samuel: "Lessons Learned from Using Viscoelastic

Surfactants in Well Stimulation," SPEPO, 22(1) 112-120, 2007.

99. Al-Dhafeeri, A.M. and H.A. Nasr-El-Din: “Characteristics of High Permeability Zones Using Core Analysis and Production Logging Data,” J. Pet. Sci. Eng., 55(1-2), 18-36, 2007.

100. Al-Muntasheri, G.A., I.A. Hussein, H.A. Nasr-El-Din, and M.B Amin:

“Viscoelastic Properties of a High Temperature Cross-Linked Water Shut-off Polymeric Gel,” J. Pet. Sci. Eng., 55(1-2) 56-66, 2007.

101. Al-Muntasheri, G.A, H.A. Nasr-El-Din, J.A. Peters, P.L.J. Zitha: “Investigation

of a High Temperature Organic Water Shutoff Gel: Reaction Mechanisms,” SPEJ, 11(4) 497-504, 2006.

18

102. Taylor, K.C., H.A. Nasr-El-Din and S. Mehta: “Anomalous Acid Reaction Rates in Carbonate Reservoir Rocks,” SPEJ 11(4) 488-496, 2006.

103. Siddiqui, S., H.A. Nasr-El-Din, and A. Khamees: "Wormhole Initiation and

Propagation of Emulsified Acid in Carbonate Cores Using Computerized Tomography," J. Pet. Sci. Eng., 54(3-4) 93-111, 2006.

104. Nasr-El-Din, H.A., A. Al-Mohammed, A.A. Al-Shurei, N.K. Merwat, M.M. Erbil

and M. Samuel: “Restoring the injectivity of water disposal wells using a viscoelastic surfactant-based acid,” J. Pet. Sci. Eng., 54(1-2) 10-24, 2006.

105. Nasr-El-Din, H.A., N.S. Al-Habib, A.A. Al-Mumen, M. Jemmali and M.

Samuel: “A New Effective Stimulation Treatment for Long Horizontal Wells Drilled in Carbonate Reservoirs,” SPEPO 21 (3) 330-338, 2006.

106. Raju, K.U., H.A. Nasr-El-Din, V. Hilab, S. Siddiqui, and S. Mehta: “A Case

Study of Incompatibility of Disposal and Aquifer Waters: Iron Sulfide,” SPEJ, 10(4) 374-384, 2005.

107. Al-Khaldi, M., H.A. Nasr-El-Din, M. Blauch, G. Funkhouser: “New Findings on

Damage Potential, Geochemical Reaction Mechanisms and Production Enhancement Applications for Citric Acid,” SPEJ, 10(3) 267-275, 2005.

108. Nasr-El-Din, H.A. and K.C. Taylor: “Evaluation of Sodium Silicate/Urea Gels

Used for Water Shut-Off Treatments,” J. Pet. Sci. Eng., 48, 141-160, 2005.

109. Nasr-El-Din, H.A.: “Formation Damage Induced by Chemical Treatments: Case Histories,” J. Energy Resources Technology, 127, 214-224, 2005.

110. Taylor, K.C., M. Al-Katheeri, H.A. Nasr-El-Din: “Development and Field

Application of a New Measurement Technique for Organic Acid Additives in Stimulation Fluids”. SPEJ, 10(2), 152-160, 2005.

111. Siddiqui, M.A. and H.A. Nasr-El-Din: “Evaluation of Special Enzymes as a

Means to Remove Formation Damage Induced by Drill-in Fluids in Horizontal Gas Wells in Tight Reservoirs,” SPEPF, 20(3) 177-184, 2005.

112. Nasr-El-Din, H.A., S.A. Metcalf, and H.B. Luft: “Sour Environments:

Protecting Production and Equipment,” JCPT, 44 (8) 41-47, 2005.

113. Nasr-El-Din, H.A., N.S. Al-Habib, A.A. Al-Mumen, M. Jemmali and M. Samuel: “A Novel Technique to Acidize Horizontal Wells with Extended Reach,” JPT, 46-48, July, 2005.

19

114. Taylor, K.C., A.H. Al-Ghamdi, and H.A. Nasr-El-Din: “Effect of Rock Type and Acidizing Additives on Acid Reaction Rates Using the Rotating Disk Instrument,” JCPT, 43, 10, 2004.

115. Taylor, K.C., A. Al-Ghamdi, H.A. Nasr-El-Din: “Effect of Additives on the Acid

Dissolution Rates of Calcium and Magnesium Carbonates,” SPEPF, 19(3), 122-127, 2004.

116. Bartko, K., H.A. Nasr-El-Din, Z. Rahim, and G. Al-Muntasheri: “Acid

Fracturing of a Carbonate Gas Reservoir: The Impact of Acid Type and Lithology on Fracture Half Length and Width,” JPT, March 2004.

117. Nasr-El-Din, H.A., A. Al-Othman, K.C. Taylor, A. Al-Ghamdi, “Surface

Tension of Acid Stimulating Fluids at High Temperatures”, J. Pet. Science Eng., (1-2) 43, 57-73, 2004.

118. Nasr-El-Din, H.A., S.M. Al-Driweesh, G.A. Al-Muntasheri: “Field Application

of HCl-Formic Acid System to Acid Fracture Deep Gas Wells Completed with Super Cr-13 Tubing in Saudi Arabia,” JPT, March 2004.

119. Taylor, K.C. and H.A. Nasr-El-Din: “Laboratory Evaluation of In-Situ Gelled

Acids for Carbonate Reservoirs”, SPEJ, 8(4) 426-434, 2003.

120. Taylor, K.C. and H.A. Nasr-El-Din: “Thermally Responsive Aqueous Silicate Mixture,” US patent # 6,660,694. Issued on December 9, 2003.

121. Kokal, S.L., A.M. Al-Ghamdi, N. Dawood, H.A. Nasr-El-Din, J. Fontanilla, and

Y. Rufaie: “Productivity Decline in Oil Wells Related to Asphaltene precipitation and Emulsion Block,” SPEPF, 18(4) 247-256, 2003.

122. Nasr-El-Din, H.A., A. Al-Humaidan, B. Fadel, W. Frenier, D. Hill,

“Investigation of Sulfide Scavengers in Well Acidizing Fluids”, SPEPF, 17(4) 229-35, 2002.

123. Taylor, K.C., H.A. Nasr-El-Din and R.B. Dajani, “Analysis of Acid Returns

Improves Efficiency of Acid Stimulation: a Case History”, J. Pet. Sci. Eng., 28, 33-53, 2000.

124. Nasr-El-Din, H.A., H.A. Al-Anazi and S.K. Mohamed, “Stimulation of Water

Disposal Wells Using Acid-in-Diesel Emulsions – Case Histories”, SPEPF, 15(3) 176-182, 2000.

125. Taylor, K.C. and H.A. Nasr-El-Din, “Flowback Analysis of Acid Stimulation of

Seawater Injection Wells: Case Histories”, J. Pet. Technology, 48-50, March 2000.

20

126. Lynn, J.D. and H.A. Nasr-El-Din, "Formation Damage Associated with Water-Based Drilling Fluids and Emulsified Acid Study”, J. Pet. Technology, 28-29, November 1999.

127. Nasr-El-Din, H.A., A. Al-Mulhem and J.D. Lynn, “Evaluation of Clay

Stabilizers for Sandstone Field in Central Saudi Arabia”, SPEPF, 14(4) 253-259, 1999.

128. Nasr-El-Din, H.A., J.H. Masliyah, and K. Nandakumar, “Continuous

Separation of Suspensions Containing Light and Heavy Particle Species", Can. J. Chem. Eng., 77, 1003-1013, 1999.

129. Taylor, K.C., H.A. Nasr-El-Din and M. Al-Alawi, “Systematic Study of Iron

Control Chemicals Used During Well Stimulation”, SPEJ, 4(1) 19-24, 1999.

130. Lynn, J.D. and H.A. Nasr-El-Din, "Evaluation of Formation Damage Due to Frac Stimulation of a Saudi Arabian Clastic Reservoir”, J. Pet. Sci. Eng., 21, 179-201, 1998.

131. Nasr-El-Din, H.A., J.H. Hopkins, C.E. Shuchart and T. Wilkinson “Aluminum

Scaling and Formation Damage due to Regular Mud Acid Treatment”, J. Pet. Technology, 48-50, March 1998.

132. Taylor, K., R.A. Burk, H.A. Nasr-El-Din and L.L. Schramm, "Development of

a Flow Injection Analysis for the Determination of Acrylamide Copolymers in Brines", J. Pet. Sci. Eng., 22, 129-139, 1998.

133. Taylor, K.C. and H.A. Nasr-El-Din, “Water-soluble Hydrophobically

Associating Polymers for Improved Oil recovery - A Literature Review,” J. Pet. Sci. Eng., 19, 265-280, 1998.

134. Nasr-El-Din, H.A. and A. Al-Ghamdi, "Effect of Acids and Stimulation

Additives on the Cloud Point of Nonionic Surfactants", Peer Approved, SPE Production and Facilities, 1997.

135. Al-Ghamdi, A. and H.A. Nasr-El-Din, "Effect of Oilfield Chemicals on the

Cloud Point of Nonionic Surfactants", Colloids and Surfaces, 125, 5-18, 1997.

136. Nasr-El-Din, H.A., R.S. MacTaggart and J.H. Masliyah, “Solids Concentration Measurement in a Slurry Mixing Tank", Chem. Eng. Sci., 51, 1209-1220, 1996.

137. Taylor, K. and H.A. Nasr-El-Din, “The Effect of Synthetic Surfactants on the

Interfacial Behavior of Crude Oil/Alkali/Polymer Systems", Colloids and Surfaces, 108, 49-72, 1996.

21

138. Kwok, W., R.E. Hayes and H.A. Nasr-El-Din, “A Dynamic Model for Nonionic Surfactant Adsorption on Berea Sandstone", Can. J. Chem. Eng., 73, 705-716, 1995.

139. Kwok, W., R.E. Hayes and H.A. Nasr-El-Din, “Modeling Dynamic Adsorption

of Anionic Surfactant on Berea Sandstone with Radial Flow", Chem. Eng. Sci., 50, 769-783, 1995.

140. Kwok, W., R.E. Hayes and H.A. Nasr-El-Din, “Dispersion in Consolidated

Sandstone Cores with Radial Flow", Transport in Porous Media, 191, 37-66, 1995.

141. Taylor, K. and H.A. Nasr-El-Din, “Acrylamide Copolymers: A Review of

Methods for the Determination of Concentration and Degree of Hydrolysis, J. Pet. Sci. Eng., 12, 9-23, 1994.

142. Nasr-El-Din, H.A., K.A. Green and L.L. Schramm, “Recovery of Residual Oil

Using the Alkali/Surfactant/Polymer Process: Effect of Slug Size, Core Length and a Polymer Chase", Revue de l'Institut Français du Pétrole, 49, 359-377, 1994.

143. Mannhardt, K. and H.A. Nasr-El-Din, “A Review of One-Dimensional

Convection-Dispersion Models and Their Application to Miscible Displacement in Porous Media", In-Situ, 18, 277-345, 1994.

144. Hawkins, B.F., K.C. Taylor and H.A. Nasr-El-Din, “Mechanisms of Surfactant

and Polymer Enhanced Alkaline Flooding: Application to the David Lloydminster and Wainwright Sparky Fields", J. Can. Pet. Tech., 33, 52-63, 1994.

145. Liu, S., A. Afacan, H.A. Nasr-El-Din and J.H. Masliyah, “An Experimental

Study of Pressure Drop in Helical Pipes", Proc. the Royal Society, 444, 307-316, 1994.

146. MacTaggart, R.S., H.A. Nasr-El-Din, J.H. Masliyah, “A Conductivity Probe for

Measuring Solids Concentration in a Slurry Mixing Tank", Separation Technol., 43, 151-160, 1993.

147. Kwok, W., H.A. Nasr-El-Din, R.E. Hayes and D. Sethi, “Static and Dynamic

Adsorption of a Nonionic Surfactant on Berea Sandstone", Colloids and Surfaces, 78, 193-209, 1993.

148. Nasr-El-Din, H.A. and K. Taylor, “Interfacial Tension of Crude Oil/Alkali

Systems in the Presence of Partially Hydrolyzed Polyacrylamide", Colloids and Surfaces, 49, 273-279, 1993.

22

149. Taylor, K. and H.A. Nasr-El-Din, "Xanthan Biopolymers: A Review for the Methods for the Determination of Concentration and for the Measurements of Acetate and Pyruvate Content" J. Pet. Sci. Eng., 9, 273-279, 1993.

150. Kwok, W., H.A. Nasr-El-Din and R.E. Hayes, “Propagation of Anionic

Surfactants in Radial Sandstone Cores", J. Can. Pet. Tech., 32, 39-48, 1993. 151. MacTaggart, R.S., H.A. Nasr-El-Din and J.H. Masliyah, “Sampling

Withdrawal from a Slurry Mixing Tank", Chem. Eng. Sci., 48, 921-931, 1993.

152. Nasr-El-Din, H.A. and J. Noy, “Flow Behavior of Alkaline, Surfactant and Xanthan Solutions Used for Enhanced Oil Recovery, Revue de l'Institut Français du Pétrole, 47, 771-791, 1992.

153. Masliyah, J.H., A. Afacan, A.K.M. Wong and H.A. Nasr-El-Din "Flow of

Slightly Settling Slurries in a Horizontal Rotary Drum", Can. J. Chem. Eng., 70, 1083-1089, 1992.

154. Nasr-El-Din, H.A., A. Afacan, J. Foster, and J.H. Masliyah, “Transport of

Sand-Water Slurries through a Rotary Drum with an End-Constriction", Powder Technol., 71, 251-261, 1992.

155. Nasr-El-Din, H.A. and K. Taylor, “Dynamic Interfacial Tension in Crude

Oil/Alkali/Surfactant Systems", Colloids and Surfaces, 66, 23-37, 1992. 156. Nasr-El-Din, H.A., N.J. Ruhl and J.H. Masliyah, “Slurry Flow in a Linear

Manifold with a Horizontal Approach: Effect of Particle Size", Separation Technol., 2, 114-123, 1992.

157. Foster, J., H.A. Nasr-El-Din and J.H. Masliyah, “Solids Distribution in Slurry

Flow in a Linear Manifold with a Horizontal Approach", Can. J. Chem. Eng., 70, 3-12, 1992.

158. Nasr-El-Din, H.A., B.F. Hawkins and K.A. Green, “Recovery of Residual Oil

Using the Alkali/Surfactant/Polymer Process: Effect of Alkali Concentration", J. Pet. Sci. Eng., 6, 381-401, 1992.

159. Nasr-El-Din, H.A., B.B. Maini and P. Stanislav, “Fines Migration in

Unconsolidated Sand Formations", AOSTRA J. Research, 7, 1-15, 1991. 160. Nasr-El-Din, H.A., A. Afacan and J.H. Masliyah, “Particle Collection from

Vertical Slurry Flow through a Side Port", Chem. Eng. Research and Design, 69, 374-380, 1991.

23

161. Nasr-El-Din, H.A. and B.F. Hawkins, “Recovery of Residual Oil Using Alkali, Surfactant and Polymer Slugs in Radial Cores", Revue de l'Institut Français du Pétrole, 46, 199-219, 1991.

162. Afacan, A., J.H. Masliyah and H.A. Nasr-El-Din "Slurry Hold-up in a

Horizontal Rotary Drum with an Open-End Discharge", Powder Technol., 63, 179-186, 1990.

163. Nasr-El-Din, H.A., J.H. Masliyah, and K. Nandakumar, “Continuous

Separation of Concentrated Bidisperse Suspensions in Inclined Plate Settlers", Int. J. Multiphase Flow, 16, 909-919, 1990.

164. Nasr-El-Din, H.A., J.H. Masliyah, and K. Nandakumar, “Continuous

Separation of Concentrated Bidisperse Suspensions in a Vertical Column", Chem. Eng. Sci., 45, 849-857, 1990.

165. Nasr-El-Din, H.A., K.C. Khulbe, V. Hornof and G.H. Neale, “Effects of

Interfacial Reaction on the Radial Displacement of Oil by Alkaline Solutions", Revue de l'Institut Français du Pétrole, 45, 231-244, 1990.

166. Masliyah, J.H., H.A. Nasr-El-Din and K. Nandakumar, “Continuous

Separation of Bidisperse Suspensions in Inclined Plate Settlers", Int. J. Multiphase Flow, 15, 815-829, 1989.

167. Nasr-El-Din, H.A., A. Afacan, and J.H. Masliyah, “Wall Sampling from

Horizontal Slurry Pipelines", Chem. Eng. Commun. (John Happel Festschrift, Special Issue), 82, 203-221, 1989.

168. Hayes, R.E., K. Nandakumar and H.A. Nasr-El-Din, "Steady Laminar Flow in

a 90 Degree Planar Branch", J. Computers and Fluids, 17, 537-553, 1989. 169. Nasr-El-Din, H.A., A. Afacan, and J.H. Masliyah, “Particle Segregation in

Slurry Flow through a Tee with a Horizontal Approach", Int. J. Multiphase Flow, 15, 659-671, 1989.

170. Nasr-El-Din, H.A., J.H. Masliyah, K. Nandakumar and D. Law, “Continuous

Separation of a Bidisperse Suspension in a Vertical Column", Chem. Eng. Sci., 43, 3225-3234, 1988.

171. Nasr-El-Din, H.A., V. Hornof and G.H. Neale, "Radial Fingering in a Water-

Wet Porous Medium", Revue de l'Institut Français du Pétrole, 42, 783-796, 1987. 172. Nasr-El-Din, H.A., "Comments on Scaling-up Rules for Solids Suspension in

Stirred Vessels", Chem. Eng. Sci., 42, 2986, 1987.

24

173. Nasr-El-Din, H.A., C.A. Shook and J. Colwell, “The Lateral Concentration Distributions in Horizontal Slurry Pipeline Flow", Int. J. Multiphase Flow, 13, 661-670, 1987.

174. Nasr-El-Din, H.A. and C.A. Shook, “Effect of a 90 Degree Bend on Slurry

Velocity and Concentration Distributions", J. Pipelines, 6, 239-252, 1987. 175. Nasr-El-Din, H.A., C.A. Shook and J. Colwell, "A Conductivity Probe for

Measuring Local Concentration in Slurry Systems", Int. J. Multiphase Flow, 13, 365-378, 1987.

176. Nasr-El-Din, H.A. and C.A. Shook, "Particle Segregation in Slurry Flow

through Vertical Tees", Int. J. Multiphase Flow, 12, 427-443, 1986. 177. Nasr-El-Din, H.A. and C.A. Shook, "Sampling from Slurry Pipelines Thick

Walled and Straight Probes", J. Pipelines, 5, 113-124, 1985. 178. Nasr-El-Din, H.A., C.A. Shook and M.N. Esmail, "Wall Sampling in Slurry

Systems, Can. J. Chem. Eng., 63, 746-753, 1985. 179. Nasr-El-Din, H.A., C.A. Shook and M.N. Esmail, "Isokinetic Probe Sampling

from Slurry Pipelines", Can. J. Chem. Eng., 62, 179-185, 1984. 180. El-Refai, M.A., S.S. El-Nashaie and H.A. Nasr-El-Din, "Effect of Feedback

Inhibition on the Behavior of Multi-Enzyme Mono-linear Reaction Chains", Solid-Phase Bio., 5, 235-243, 1980.

181. El-Refai, M.A., S.S. El-Nashaie, H.A. Nasr-El-Din and M. El-Ansary,

"Multiplicity and Memory in Membranes Carrying Mono-Substrate - Inhibited Enzymes", J. Membrane Sci., 5, 339-348, 1979.

Submitted

1. De Wolf, C.A., H.A. Nasr-El-Din, A. Bouwman, E. Bang, E. Naylor. A New, Low-Corrosive Fluid to Stimulate Deep Wells Completed with Cr-Based Alloys. Paper SPE 152716 submitted to SPE Prod. & Operations, 2015.

2. Shehata, A.M. and H.A. Nasr-El-Din. Reservoir Connate Water Salinity and

Chemical Composition Variation: Effect on Low-Salinity Water Flooding. SPE 171690 submitted to SPE Res. Eng., 2015.

3. Qin, J. and H.A. Nasr-El-Din, Acidizing Sandstone Reservoirs Using Fines Control Acids. SPE 169395 submitted to SPEJ, 2015.

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4. Sokhanvarian, K., H.A. Nasr-El-Din, C.A. De Wolf, Thermal Decomposition of Chelating Agents and a New Mechanism of Formation Damage", SPE 165153 presented at the SPE European Formation Damage Conference and Exhibition, Noordwijk, The Netherlands, 5–7 June, 2015.

5. Ortega, A., H.A. Nasr-El-Din, S. Rimassa, Acidizing High Temperature Dolomite Formations with Methansulfonic Acid: A Coreflood Study. Submitted to SPEJ, 2015.

CONTRIBUTED PAPERS IN PUBLISHED CONFERENCE PROCEEDINGS:

1. Zhao, H., H.A. Nasr-El-Din, and M. Al-Bourgary. Nanofibrillated Cellulose Fibers as Viscosifiers in Hydraulic Fracturing Fluids. Paper IPTC 18530 to be presented the 9th International Petroleum Technology Conference, Doha, Qatar. December 6-9, 2015.

2. Ibrahim, A.F. and H.A. Nasr-El-Din. Effect of Formation Water Salinity on CO2 Sequestration in Coal Seams and ECBM. IPTC-18278 to be presented at the 9th International Petroleum Technology Conference (IPTC) to be held in Doha, Qatar, 6-9 December, 2015.

3. Sokhanvarian, K., H.A. Nasr-El-Din, L.T. Harper. A New Zr-Based Crosslinker- An Optimized Formulation of Cross-linked CMHPG for High Temperature Applications. Paper SPE 176837 presented at the SPE Asia Pacific Unconventional Resources Conference and Exhibition, Brisbane, Australia, 9-11 November, 2015.

4. Assem, A.I., H.A. Nasr-El-Din, S. Liu and T. Fuss. Interactions Between Acids and Alumina Silicates Based Proppants. Paper SPE 176274 to be presented at the SPE/IATMI Asia Pacific Oil & Gas Conference and Exhibition held in Nusa Dua, Indonesia, 20 – 22 October, 2015.

5. Ibrahim, A.F. and H.A. Nasr-El-Din. CO2 Sequestration in Un-mineable Coal Seams. Paper SPE-176458 prepared for presentation at SPE/IATMI Asia Pacific Oil & Gas Conference and Exhibition to be held in Nusa Dua, Indonesia 20 – 22 October, 2015.

6. Assem, A.I. and H.A. Nasr-El-Din. Proppants. Interactions Between Acids and Alumina Silicates Based Proppants. Paper SPE 175833 to be presented at the SPE North Africa Technical Conference and Exhibition held in Cairo, Egypt, 14-16 September, 2015.

7. Ramanathan, R., Shehata, A.M., and H.A. Nasr-El-Din. Water Alternating CO2 Injection Process - Effect of Salinity of Injected Brine on Oil Recovery. Paper SPE-175280 to be presented at the Kuwait Oil & Gas Show and Conference, Mishref, Kuwait, 11-14 October, 2015.

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8. Rabie, A.I. and H.A. Nasr-El-Din. Effect of Additives on the Reaction of Stimulating Fluids During Matrix Acidizing. Paper SPE-175192 to be presented at the SPE Kuwait Oil & Gas Show and Conference, Mishref, Kuwait, October 11 – 14, 2015.

9. Rabie, A.I. and H.A. Nasr-El-Din. Effect of Acid Additives on the Reaction of Stimulating Fluids During Matrix Acidizing Treatments. Paper SPE-175827 to be presented at the 2015 SPE North Africa Technical Conference and Exhibition, Cairo, Egypt, September 14-16, 2015.

10. Xiao, J., H.A. Nasr-El-Din, and M. Al-Bagoury. Removal of Ilmenite Oil-based Filter Cake under HP/HT Conditions Using Hydrochloric Acid. Paper SPE 175728 to be presented at the SPE North Africa Technical Conference and Exhibition, Cairo, Egypt, 14-16 September, 2015.

11. Ibrahim, A.F. and H.A. Nasr-El-Din. History Matching and Predicting Gas/Water Production from CBM. Paper SPE-2147766 presented at the URTeC, San Antonio, Texas, 20-22 July, 2015.

12. Sokhanvarian, K., H.A. Nasr-El-Din, and T. Harper. New Al-based Cross-linkers to Form a Strong Gel for Hydraulic Fracturing Treatments. Paper SPE 174363 presented at SPE EUROPEC held in Madrid, Spain, 2-4 June, 2015.

13. Ibrahim, A.F. and H.A. Nasr-El-Din. Effects of Water Salinity, CO2 Solubility, and Gas Composition on Coal Wettability. Paper SPE 174371 presented at SPE EUROPEC held in Madrid, Spain, 2-4 June, 2015.

14. Zhao, H., H.A. Nasr-El-Din, M. Al-Bagoury. A New Fracturing Fluid for HP/HT

Applications. SPE 174204 presented at the SPE European Formation Damage Conference, Budapest, Hungary, 3-5 June, 2015.

15. Abdelmoneim, S.S. and H.A. Nasr-El-Din. Determining the Optimum HF Concentration for Stimulation of High Temperature Sandstone Formations. SPE-174203 presented at the SPE European Formation Damage Conference, Budapest, Hungary, 3-5 June, 2015.

16. Emrani, A.S. and H.A. Nasr-El-Din. Stabilizing CO2-Foam using Nanoparticles. SPE-174254 presented at the SPE European Formation Damage Conference, Budapest, Hungary, 3-5 June, 2015.

17. Ouled Ameur, Z., V. Kudrashou, H.A. Nasr-El-Din, J. Forsyth, B. Daigle, J. Mahony. Stimulation of High Temperature SAGD Producer Wells Using a Novel Chelating Agent (GLDA) and Subsequent Geochemical Modeling Using PHREEQC. SPE-173774 presented at the SPE International Symposium on Oilfield Chemistry, The Woodlands, TX, USA, 13 - 15 April, 2015.

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18. Shehata, A.M. and H.A. Nasr-El-Din. Laboratory Investigation on Impact of Reservoir Salinity Variation and Crude Oil Polar Components on Low-Salinity Waterflooding. SPE-173763 presented at the SPE International Symposium on Oilfield Chemistry, The Woodlands, TX, USA, 13 - 15 April, 2015.

19. Rabie, A.I., M.R. Saber, and H.A. Nasr-El-Din. New Environmentally Friendly Acidizing Fluid for HP/HT Matrix Acidizing Treatments. Paper SPE-173751 presented at the SPE International Symposium on Oilfield Chemistry, The Woodlands, TX, USA, 13 - 15 April, 2015.

20. Zakaria, A.S. and H.A. Nasr-El-Din. Application of Novel Emulsified Gelled Acid System Improves the Efficiency of Carbonate Acidizing. Paper SPE 173711 presented at the SPE International Symposium on Oilfield Chemistry, The Woodlands, Texas, USA, 13 - 15 April, 2015.

21. Sajjaat M. Reyath, Hisham A. Nasr-El-Din, S. Rimassa. Determination of the Reaction Rate of Methane Sulfonic Acid Solutions with Calcite Using the Rotating Disk Apparatus. SPE 173794 presented at the SPE International Symposium on Oilfield Chemistry, The Woodlands, TX, USA, 13 - 15 April, 2015.

22. Akanni, O.O. and H.A. Nasr-El-Din. The Accuracy of Carbonate Matrix-Acidizing Models in Predicting Optimum Injection and Wormhole Propagation Rates. Paper SPE 172575 presented at the Middle East Oil & Gas Show and Conference. Bahrain, 9 – 11 March, 2015.

23. Rabie, A.I. and H.A. Nasr-El-Din. Sodium Gluconate as a New Environmentally Iron Chelating Agent for HP/HT Stimulation Treatments. Paper SPE-172640 presented in the 19th Middle East Oil & Gas Show and Conference, 2015, Manama, Kingdom of Bahrain, March 8 – 11, 2015.

24. Shehata, A.M. and H.A. Nasr-El-Din. Role of Clays, Reservoir Connate-Water,

and Crude Oil on the Performance of Low-Salinity Water Flooding. IPTC-18176 presented at the 8th International Petroleum Technology Conference held Kuala Lumpur, Malaysia, 10-12 December, 2014.

25. Shehata, A.M. and H.A. Nasr-El-Din. Reservoir Connate Water Salinity and Chemical Composition Variation: Effect on Low-Salinity Water Flooding. SPE 171690 presented at the Abu Dhabi International Petroleum Exhibition and Conference held in Abu Dhabi, 10-13 November, 2014.

26. Sakipour, A. and H.A. Nasr-El-Din. A New Mechanism of Formation Damage in

Sandstone Matrix Acidizing Caused by Apatite; A Phosphate Cementing Material. Paper SPE 170987 presented at the SPE Annual Technical Conference and Exhibition, Amsterdam, The Netherlands, 27-29 October, 2014.

27. Aryanpanah, S. and H.A. Nasr-El-Din. Rheological Properties of an Amine Oxide Viscoelastic Surfactant with Application in Well Stimulation. Presented at the

28

SPE Latin American and Caribbean Petroleum Engineering Conference, Maracaibo, Venezuela, 21–23 May, 2014.

28. Kumar, R., J. He, H.A. Nasr-El-Din. Effect of Oil Saturation on Acid Propagation during Matrix Acidization of Carbonate Rocks. Paper SPE 169330 prepared for presentation at the SPE Latin American and Caribbean Petroleum Engineering Conference held in Maracaibo, Venezuela, 21-23 May, 2014.

29. Haghshenas, A. and H.A. Nasr-El-Din. Effect of Dissolved Solids on Reuse of Produced Water in Hydraulic Fracturing Jobs. Paper SPE 169408 presented at the Latin America and Caribbean Petroleum Engineering Conference (LACPEC) held in Maracaibo, Venezuela, 21 – 23 May, 2014.

30. Qin, J. and H.A. Nasr-El-Din, Acidizing Sandstone Reservoirs Using Fines Control Acids. SPE 169395 presented at the Latin America and Caribbean Petroleum Engineering Conference (LACPEC) held in Maracaibo, Venezuela, 21 – 23 May, 2014.

31. Rostami, A. and H.A. Nasr-El-Din. Microemulsion vs. Surfactant Assisted Gas Recovery in Low Permeability Formations with Water Blockage. Paper SPE 169582 presented at the SPE Western North America and Rocky Mountain Joint Regional Meeting to be held in Denver, CO, USA, 16-18 April, 2014.

32. De Wolf, C.A., E.R. Bang, A.J. Bouwman, W. Braun, E. De Oliveira, H.A. Nasr-El-Din. Evaluation of Environmentally Friendly Chelating Agents for Applications in the Oil and Gas Industry. Paper SPE 168165 presented at the Formation Damage Conference and Exhibition held in Lafayette, LA, Feb. 26-28, 2014.

33. Nasr-El-Din, H.A., H. Dana, V. Tomos, T. Stanitzek, C.A. De Wolf. Field Treatment to Stimulate an Oil Well in a Sandstone Formation Using a Novel, Low Corrosive, Environmentally Friendly Fluid. Paper SPE 168163 presented at the Formation Damage Conference and Exhibition held in Lafayette, LA, Feb. 26-28, 2014.

34. Haghshenas, A. and H.A. Nasr-El-Din. Developing New Fracture Materials to Meet New Environmental Challenges. Paper SPE 168614 presented at the Hydraulic Fracturing Conference held in The Woodlands, TX, 4-6 Feb, 2014.

35. Rostami, A., D.T. Nguyen, and H.A. Nasr-El-Din. Improving Relative Permeability to Gas in Tight Sandstone Formations by Using Microemulsions. Paper IPTC 17675 presented at the International Petroleum Technology Conference, Doha, Qatar, 20–22 January, 2014.

36. Lyons, J., H. Nasrabadi, H.A. Nasr-El-Din. A Novel Pore-scale Thermal Fracture Acidizing Model with heterogeneous Rock Properties. Paper 167158 presented

29

at the Unconventional Resources Conference held in Calgary, AB, Canada, 5-7 November, 2013.

37. Bakar, H.B., I.C. XianLung, M.Z.B.M. Nadzri, N.A.B. Azam, M.A.B.M. Zaini, J.B. Jaafar, M. Hirman, H.A. Nasr-El-Din, C.A. de Wolf, C. Robb. Offshore Field Application of a Low-Corrosive Fluid Designed for De-Scaling of Wells with Electrical Submersible Pump. Paper SPE 166335 presented at the Annual SPE Conference and Exhibition held in New Orleans, Louisiana, USA, 30 September–02 October 2013.

38. Wehunt, C.D. and H.A. Nasr-El-Din. Permeability Pitfalls and Opportunities. SPE 165166 presented at the SPE European Formation Damage Conference and Exhibition, Noordwijk, The Netherlands, 5–7 June, 2013.

39. Rabie, A.I., H.A. Nasr-El-Din, J.T. Hardesty, G.C. Nathan and M.R.G. Bell. Impact of Charge Type Used in Perforation on the Outcome of Matrix Acid Treatments in Carbonate Formations: A Comparative Study. Paper SPE-165141 presented at the SPE European Formation Damage Conference and Exhibition, Noordwijk, The Netherlands, 5–7 June, 2013.

40. Sokhanvarian, K., H.A. Nasr-El-Din, C.A. De Wolf, Thermal Decomposition of

Chelating Agents and a New Mechanism of Formation Damage", SPE 165153 presented at the SPE European Formation Damage Conference and Exhibition, Noordwijk, The Netherlands, 5–7 June, 2013.

41. Zhou, L., H.A. Nasr-El-Din. Acidizing Sandstone Formations Using a Sandstone Acid System For High Temperatures. Paper SPE 165084 presented at the SPE European Formation Damage Conference and Exhibition held in Noordwijk, The Netherlands, 5–7 June, 2013.

42. Shu, Y., H.A. Nasr-El-Din, J. Zhou. Impact of Fe (III) on the Performance of VES-Based Acids. Paper SPE 165149 presented at the SPE European Formation Damage Conference and Exhibition held in Noordwijk, The Netherlands, 5–7 June, 2013.

43. Elkatatny, S.M., H.A. Nasr-El-Din, and M. Al-Bagoury. Using Hydrochloric Acid to Remove Ilmenite Water-Based Filter Cake in HPHT Applications. Paper SPE 165181 presented at the 10th SPE International Conference and Exhibition on European Formation Damage, Noordwijk, The Netherlands, 5 - 7 June, 2013.

44. Assem, A.I., H.A. Nasr-El-Din, C.A. De Wolf. Formation Damage Due to Iron Precipitation in Carbonate Rocks. Paper SPE 165203 to be presented at the SPE European Formation Damage Conference and Exhibition held in Noordwijk, The Netherlands, 5–7 June, 2013.

45. Sayed, M.A., H.A. Nasr-El-Din, C.A. De Wolf. Emulsified Chelating Agent:

Evaluation of an Innovative Technique for High Temperature Stimulation

30

Treatments. Paper SPE-165120 presented at the SPE European Formation Damage and Exhibition, Noordwijk, The Netherlands, 5-7 June, 2013.

46. He, Z., G. Wang, H.A. Nasr-El-Din, and S. Holt. Hydrolysis Effect on the

Properties of a New Class of Viscoelastic Surfactant-Based Acid and Damage Caused by the Hydrolysis Products. Paper SPE 165161 presented at the SPE European Formation Damage and Exhibition, Noordwijk, The Netherlands, 5-7 June, 2013.

47. Xiao, J., H.A. Nasr-El-Din, and M. Al-Bagoury. Evaluation of Micronized Ilmenite as a Weighting Material in Oil-based Drilling Fluids for HPHT Applications. Paper SPE 165184 presented at the SPE European Formation Damage Conference & Exhibition, Noordwijk, The Netherlands, 5-7 June, 2013.

48. Wang, G., H.A. Nasr-El-Din, R. Petcavich, and R.T. Estrada, III. A New Solvent to Extract Bitumen from Oil Sands. Paper SPE 165465 presented at the SPE Heavy Oil Conference – Canada, Calgary, Alberta, Canada, 11-13 June, 2013.

49. Zhou, L., H.A. Nasr-El-Din. Acidizing Sandstone Formations Using a Single-Stage Sandstone Acid System. Paper SPE 164799 presented at the 75th EAGE Conference & Exhibition incorporating SPE EUROPEC, London, United Kingdom, 10-13 June, 2013.

50. Gurluk, M.R., H.A. Nasr-El-Din, J.B. Crews. Enhancing the Performance of Viscoelastic Surfactant Fluids Using Nanoparticles. Paper SPE 164900 presented at the 75th EAGE Conference & Exhibition in SPE EUROPEC, London, United Kingdom, 10-13 June, 2013.

51. Al Moajil, A.M. and H.A. Nasr-El-Din. Removal of Manganese Tetraoxide Filter Cake Using Combination of HCl and Organic Acid. Paper SPE 165551 presented at the Heavy Oil Conference held in Calgary, AB, Canada, 11-13 June, 2013.

52. Zhou, L., H.A. Nasr-El-Din. Interactions of Sandstone Acid Systems with Clay Minerals. Paper SPE 164720 presented at the SPE North Africa Technical Conference & Exhibition, Cairo, Egypt, 15-17 April 2013.

53. Zhou, L., H.A. Nasr-El-Din. Interactions of Sandstone Acid Systems with Clays. Paper SPE 164050 presented at the SPE International Symposium on Oilfield Chemistry, The Woodlands, Texas, USA, 8–10 April, 2013.

54. Al-Douri, A.F., M.A. Sayed, H.A. Nasr-El-Din, and C. Aften. A New Organic Acid

to Stimulate Deep Wells in Carbonate Reservoirs. Paper SPE 164110 presented at the SPE International Symposium on Oilfield Chemistry held in The Woodlands, Texas, USA, 8–10 April 2013.

55. Assem, A.I., H.A. Nasr-El-Din, C.A. De Wolf. A New Finding in the Interaction

Between Chelating Agents and Carbonate Rocks During Matrix Acidizing

31

Treatments. Paper SPE 164130 presented at the SPE International Symposium on Oilfield Chemistry, The Woodlands, Texas, USA, 8–10 April 2013.

56. Elkatatny, S.M., Nasr-El-Din, and M. Al-Bagoury. Properties of Ilmenite Water-Based Drilling Fluids for HPHT Applications. Paper SPE 16983 presented at the 6th International Petroleum Technology Conference, Beijing, China, 26 - 28 March, 2013.

57. Adenuga, O., M.A. Sayed, H.A. Nasr-El-Din. Reactions of Simple Organic Acids and Chelating Agents with Dolomite. Paper SPE 164480 presented at the SPE Production and Operations Symposium held 23 – 26 March, Oklahoma City, Oklahoma, USA, 2013.

58. Zhou, L., H.A. Nasr-El-Din. Interactions of a Single-Stage Sandstone Acid

System with Clays. Paper SPE 164472 presented at the SPE Production and Operations Symposium, Oklahoma City, Oklahoma, USA, 23-26 March, 2013.

59. Sayed, M.A., H.A. Nasr-El-Din. Acid Treatments in High Temperature Dolomitic

Carbonate Reservoirs Using Emulsified Acids. Paper SPE 164487 presented in the SPE Production and Operations Symposium held 23 – 26 March, Oklahoma City, Oklahoma, USA, 2013.

60. Elkatatny, S.M., A. Al Moajil, and H.A. Nasr-El-Din. Filter Cake Cleanup Using HCl/Glycolic Acid System. Paper SPE 164452 presented at the 18th Middle East Oil and Gas Conference, Manama, Bahrain, 10-13 March, 2013.

61. Nasr-El-Din, H.A., C.A. de Wolf, T. Stanitzek, A. Alex, S. Gerdes, N.R. Lummer,

Field Treatment To Stimulate A Deep, Sour, Tight Gas Well Using A New, Low Corrosive And Environmentally Friendly Fluid. Paper 163332 presented at the SPE Kuwait International Petroleum Conference and Exhibition, Kuwait City, Dec 10 - 12, 2012.

62. Zakaria, A.S., M.A. Sayed, H.A. Nasr-El-Din. Effect of Large Scale Heterogeneity on Carbonate Stimulation Treatments Using Emulsified Acids. Paper SPE 163288 presented at the SPE Kuwait International Petroleum Conference and Exhibition, Doha, Kuwait City, 10-12 December, 2012.

63. Braun, W., C.A. de Wolf, and H.A. Nasr-El-Din. Improved Health, Safety and Environmental Profile of a New Field Proven Stimulation Fluid. Paper SPE 157467 presented at the SPE Russian Oil & Gas Exploration & Production Technical Conference and Exhibition, Moscow, Russia, 16 – 18 October, 2012.

64. Al Moajil, A.M.A., A. Rehman, A., M. Al-Bagoury, H.A. Nasr-El-Din, C.D. Steele. Evaluation of dispersants for Drilling Fluids Based on Manganese Tetraoxide. Paper SPE154830 presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, Tianjin, China, 9-11 July, 2012.

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65. Elkatatny, S.M. and H.A. Nasr-El-Din. Removal of Water-Based Drill-in Fluid Filter Cake Using Polylactic Acid. SPE 154192 presented at SPE Europec Conference held in Copenhagen, Denmark, 4-7 June, 2012.

66. Rehman, A., A.M.A. Al Moajil, H.A. Nasr-El-Din, M. Al-Bagoury, C.D. Steele.

Environmentally Acceptable Friendly Dispersants for High Temperature Invert-Emulsion Drilling Fluids Weighted by Manganese Tetraoxide. Paper SPE 153646 presented at the SPE Latin America and Caribbean Petroleum Engineering Conference, Mexico City, Mexico, 16-18 April, 2012

67. Sokhanvarian, K., H.A. Nasr-El-Din, C.A. de Wolf. Thermal Stability of Various

Chelates that are Used in the Oilfield and Potential Damage Due to their Decomposition Products. SPE 157426 presented at International Production and Operations Conference and Exhibition, Doha, Qatar, 14-16 May, 2012.

68. Sayed, M.A., A.S. Zakaria, H.A. Nasr-El-Din, S. Holt, and H. Al-Malki. Core

Flood Study of a New Emulsified Acid with Reservoir Cores. Paper SPE 157310 presented at SPE International Production and Operations Conference & Exhibition, Doha, Qatar, 14-16 May, 2012.

69. Wang, G., H.A. Nasr-El-Din, J. Zhou, and S. Holt. A New Viscoelastic Surfactant

for High Temperature Carbonate Acidizing. Paper SPE 160884 presented at the SPE Saudi Arabia Section Technical Symposium and Exhibition, Al-Khobar, Saudi Arabia, 8–11 April, 2012.

70. Elkatatny, S.M., A. Al Moajil and H.A. Nasr-El-Din. Evaluation of a New Environmentally Friendly Treatment to Remove Mn3O4 Filter Cake. Paper SPE 156451 presented at the IADC/SPE Asia Pacific Drilling Technology Conference (APDT), Tianjin, China, 9-11 July, 2012.

71. Elkatatny, S.M. and H.A. Nasr-El-Din. Efficiency of Removing Filter Cake of

Water-Based Drill-in Fluid Using Chelating Agents Utilizing a New CT Method. Paper SPE 155426 presented at SPE Deepwater Drilling and Completions Conference, Galveston, Texas, 20-21 June, 2012.

72. Nasr-El-Din, H.A., C.A. de Wolf, A. Bouwman, E. Bang, E. Naylor, A. Alex. A New, low corrosive fluid to stimulate wells with Carbon Steel Tubular and Internals. Paper SPE 160849 presented at SPE-Saudi Arabia Section (SAS) Annual Technical Symposium & Exhibition, Al-Khobar, Saudi Arabia, 8-11 April, 2012.

73. Adejare, O.O., R.A. Nasralla, H.A. Nasr-El-Din. A Procedure for measuring Contact Angles When Surfactants Reduce Interfacial Tension and Cause Oil Droplets to Spread. Paper SPE 160876 at SPE-Saudi Arabia Section (SAS) Annual Technical Symposium & Exhibition, Al-Khobar, Saudi Arabia, 8-11 April, 2012.

33

74. De Wolf, C.A., H.A. Nasr-El-Din, A. Bouwman, E. Bang, E. Naylor. A New, Low-Corrosive Fluid to Stimulate Deep Wells Completed with Cr-Based Alloys. Paper SPE 152716 presented at the SPE International Conference and Exhibition on Oilfield Corrosion, Aberdeen, UK, 28-29 May 2012.

75. Sayed, M.A., A.S. Zakaria, H.A. Nasr-El-Din, S. Holt, H. Al-Malki. Core Flood Study of a New Emulsified Acid with Reservoir Cores. Paper SPE 157310 presented at the SPE International Production and Operations Conference and Exhibition held in Doha Qatar, 14–16 May, 2012.

76. Yang, F., H.A. Nasr-El-Din, B. Al-Harbi. Acidizing Sandstone Reservoirs Using HF and Organic Acids. Paper SPE 157250 presented at the SPE International Production and Operations Conference & Exhibition, Doha, Qatar, 14-16 May 2012.

77. Bataweel, M.A., A.K. Yadhalli Shivaprasad and H.A. Nasr-El-Din. Low-Tension Polymer Flooding Using Amphoteric surfactant in High Salinity/High Hardness and High Temperature Conditions in Sandstone Cores. SPE 155676 presented at the EOR Conference at Oil and Gas West Asia, Muscat, Oman, 16-18 April, 2012.

78. Bataweel, M.A. and H.A. Nasr-El-Din. ASP vs. SP Flooding in High

Salinity/Hardness and Temperature in Sandstone Cores. SPE 155679 presented at the EOR Conference held at Oil and Gas West Asia, 16-18 April, Muscat, Oman, 2012.

79. Nasralla, R.A., H.A. Nasr-El-Din. Double-Layer Expansion: Is It A Primary Mechanism of Improved Oil Recovery by Low-Salinity Waterflooding? SPE paper 154334 presented at the SPE Improved Oil Recovery Symposium, Tulsa, Oklahoma, USA, 14-18 April, 2012.

80. Elkatatny, S.M., M.A. Mahmoud, and H.A. Nasr-El-Din. Properties of Filter Cake

of Water-Based Drilling Fluid under Dynamic Conditions Using Computer Tomography. Paper SPE 151798 presented at IADC/SPE Drilling Conference, San Diego, California, USA. 6 - 8 March, 2012.

81. Bataweel, M.A. and H.A. Nasr-El-Din: Rheological Study for Surfactant-Polymer and Novel Alkali-Surfactant-Polymer Solutions. SPE 150913 presented at the North Africa Technical Conference and Exhibition, Cairo, Egypt, 20-22 February, 2012.

82. Sayed, M.A., H.A. Nasr-El-Din, J. Zhou, L. Zhang and S. Holt, A New Emulsified

Acid to Stimulate Deep Wells In Carbonate Reservoirs: Coreflood and Acid Reaction Studies. Paper SPE 151062 presented at the North Africa Technical Conference and Exhibition held in Cairo, Egypt, 20–22 February, 2012.

34

83. Sayed, M.A., A.I. Assem, H.A. Nasr-El-Din. Effect of Presence of Crude Oil on the Performance of Emulsified Acids. Paper SPE 152844 presented at the North Africa Technical Conference and Exhibition held in Cairo, Egypt, 20–22 February, 2012.

84. Musharova, D., I.M. Mohamed, and H.A. Nasr-El-Din. Detrimental Effect of Temperature on Fines Migration in Sandstone and Shale Formations. Paper 150953 presented at SPE International Symposium and Exhibition on Formation Damage Control, Lafayette, Louisiana, 15-17 Feb, 2012.

85. Yang, F., H.A. Nasr-El-Din, B. Al-Harbi. Acidizing Sandstone Reservoirs Using

HF and Formic Acid Paper SPE150899 presented at the SPE International Symposium and Exhibition on Formation Damage Control, Lafayette, Louisiana, 15-17 Feb., 2012.

86. Sayed, M.A., H.A. Nasr-El-Din. Reaction Rate of Emulsified Acids and Dolomite. Paper SPE 151815 presented in the SPE International Symposium & Exhibition on Formation Damage, Lafayette, Louisiana, 15-17 February, 2012.

87. Sayed, M.A., H.A. Nasr-El-Din, J. Zhou, S. Holt. A New Emulsified Acid to

Stimulate Deep Wells in Carbonate Reservoirs. Paper SPE 151061 presented in the SPE International Symposium & Exhibition on Formation Damage, Lafayette, Louisiana, 15-17 February, 2012.

88. He, J., I.M. Mohamed, H.A. Nasr-El-Din and Xiao Jie. Mitigation of Calcium Sulfate Scale Formation When Seawater Is Used To Prepare HCl-Based Acids. Paper SPE 151143 presented at SPE International Symposium & Exhibition on Formation Damage Control held in Lafayette, Louisiana, 15-17 February, 2012.

89. Mohamed, I.M., He, J., and H.A. Nasr-El-Din. Formation Damage Due to CO2

Sequestration in Deep Saline Aquifers. Paper SPE 151142 presented at SPE International Symposium & Exhibition on Formation Damage Control held in Lafayette, Louisiana, 15–17 February, 2012.

90. Mohamed, I.M., J. He, and H.A. Nasr-El-Din. Carbon Dioxide Sequestration in Dolomite Rock. Paper IPTC-14924 presented at the International Petroleum Technology Conference held in Bangkok, Thailand, 15–17 November, 2012.

91. Mohamed, I.M., J. He, and H.A. Nasr-El-Din. Carbon Dioxide Sequestration in

Sandstone Aquifers: How Does It Affect the Permeability? CMTC 149958 prepared for presentation at Carbon Management Technology Conference held in Orlando, Florida, 7-9 February, 2012.

92. Mahmoud, M.A., H.A. Nasr-El-Din, and C.A. De Wolf. Challenges during Shallow and Deep Carbonate Reservoirs Stimulation. Paper IPTC 14932

35

presented at the International Petroleum Technology Conference held in Bangkok, Thailand, 15–17 November, 2011.

93. Mahmoud, M.A., H.A. Nasr-El-Din and C.A. De Wolf. Stimulation of Sandstone

and Carbonate Reservoirs Using Environmentally Friendly Chelating Agents. Paper presented at the Chemistry in Oil Industry XII: Innovative Chemistry-Value, Risks, and Rewards, Manchester, UK, 7– 9, November, 2011.

94. Mahmoud, M.A., H.A. Nasr-El-Din and C.A. Corine. Removing Formation

Damage and Stimulation of Deep Illitic-Sandstone Reservoirs Using Green Fluids. Paper SPE 147395 presented at the ATCE, Denver, Colorado, 30 Oct – 2 Nov, 2011.

95. Elkatatny, S.M., Rostami, A., and H.A. Nasr-El-Din. Characterizing the

Properties of the Self-destructing Filter cake by Using Computer Topography. Paper SPE 148124 is presented at Middle East Drilling Technology Conference and Exhibition in Muscat, Oman, 24-26 October, 2011.

96. Al-Ghamdi, A.H., M.A. Mahmoud, A.D. Hill, H.A. Nasr-El-Din. Acid Diversion

Using Viscoelastic Surfactants: The Effects of Flow Rate and Initial Permeability Contrast. Paper SPE 124564 presented at the Annual Technical Meeting and Exhibition held in Denver, CO, 30 Oct. – 2 November, 2011.

97. Mahmoud, M.A., H.A. Nasr-El-Din, and C.A. De Wolf, Effect of Reservoir Fluid Type on the Stimulation of Carbonate Cores Using Chelating Agents. SPE 143086 presented at the Brazil Offshore Conference and Exhibition, Macaé, Brazil, 14–17 June, 2011.

98. El-Monier, I.A., and H.A. Nasr-El-Din. A New Al-Based Stabilizer for High PH

Applications. Paper SPE 143260, Brazil Offshore Conference, held in the City of Macae, Brazil,15-17 June, 2011.

99. Aksoy, G., Gomaa, A.M., H.A. Nasr-El-Din. Cawiezel, Boles, K.J., and Wang, X.

Evaluation of a New Liquid Breaker System for Polymer-Based In-Situ Gelled Acids. Paper SPE 143447 presented at the SPE Brazil Offshore Conference and Exhibition, Macaé, Brazil, 14–17 June, 2011.

100. Bataweel, M.A. and H.A. Nasr-El-Din. Alternatives to Minimize Scale Precipitation in Carbonate Cores Caused by Alkalis in ASP Flooding in High Salinity/High Temperature Applications. SPE 143155 presented at the SPE European Formation Damage Conference, Noordwijk, The Netherlands, 7-10 June, 2011.

101. He, J., I.M. Mohamed, and H.A. Nasr-El-Din. Mixing Hydrochloric Acid

and Seawater for Matrix Acidizing: Is It a Good Practice? Paper 143855

36

presented at the SPE European Formation Damage Conference, Noordwijk, The Netherlands, 7-10 June, 2011.

102. Mahmoud, M.A., and H.A. Nasr-El-Din. Novel Environmentally Friendly

Fluids to Remove Carbonate Minerals from Deep Sandstone Formations. Pare SPE 143301 presented at the SPE European Formation Damage Conference, Noordwijk, The Netherlands, 7–10 June, 2011.

103. Gomaa, A.M. and H.A. Nasr-El-Din. Propagation of Polyacrylamide Used

for Acid Diversion. Paper SPE 143643 presented at the SPE European Formation Damage Conference, Noordwijk, The Netherlands, 7-10 June, 2011.

104. Wang, G., Gomaa, A.M., and H.A. Nasr-El-Din. Effect of Initial HCl Concentration on the Performance of New VES Acid Systems. Paper SPE 143449 presented at the SPE European Formation Damage Conference, Noordwijk, The Netherlands, 7-10 June, 2011.

105. Elkatatny, S.M., Mahmoud, M.A., and H.A. Nasr-El-Din. A New

Technique to Characterize Drilling Mud Filter Cake. SPE 144098 presented at the SPE European Formation Damage Conference held in Noordwijk, The Netherlands, 7–10 June, 2011.

106. Gomaa, A.M., Cawiezel, K.E., Gupta, D.V.S., Carman, P., and H.A. Nasr-El-Din. A New and Effective Viscoealstic Surfactant for Hydraulic Fracturing. Paper SPE 143450 presented at the SPE European Formation Damage Conference, Noordwijk, The Netherlands, 7-10 June, 2011.

107. Al Moajil, A.M. and H.A. Nasr-El-Din. Formation Damage Caused by

Improper Mn3O4-based Filter Cake Cleanup Treatments. Paper SPE 144179 prepared for presentation at the SPE European Formation Damage Conference held in Noordwijk, The Netherlands, 7–10 June, 2011.

108. Saneifar, M., Nasralla, R.A., Fahes, M., H.A. Nasr-El-Din., and Hill, A.D.

Effect of Spent Acids on the Wettability of Carbonates at High Temperature and Pressure. Paper SPE-144132 presented at the European Formation Damage Conference, Noordwijk, The Netherlands, 7 – 10 June, 2011.

109. El-Monier, I.A., and H.A. Nasr-El-Din. Mitigation of Fines Migration Using

a New Clay Stabilizer: A Mechanistic Study. SPE European Formation Damage Conference, in Noordwijk, The Netherlands, to be held from 7-10 June, 2011.

110. Nasralla, R.A., H.A. Nasr-El-Din. Efficiency of Oil Recovery by Low

Salinity Water Flooding in Sandstone Reservoirs. SPE paper 144602 presented at SPE Western Regional Meeting held in Anchorage, Alaska, 7 – 11 May, 2011.

37

111. Tian, Z., A.M. Gomaa, and H.A. Nasr-El-Din. Studying the Breaking Mechanism of Polymer-Based In-Situ Gelled Acids using Solid Breaker. Paper SPE 143943 presented at the SPE Western North American Regional Meeting, Anchorage, Alaska, 7–11 May, 2011.

112. Elkatatny, S.M., M.A. Mahmoud, and H.A. Nasr-El-Din. A New Approach to Determine the Filtration Properties of Drilling Fluid at Constant Differential Pressure. SPE SAS-1047 presented at the SPE Saudi Arabia Section Technical Symposium and Exhibition held in AlKhobar, Saudi Arabia, 15–18 May, 2011.

113. Mahmoud, M.A., I.M. Mohamed, Nasr-El-Din, H.A., and De Wolf, C.A.

When Should We Use Chelating Agents in Carbonate Stimulation? Paper SPE-SAS-824 presented at Annual Technical Symposium and Exhibition (SPE SAS/DGS ATS&E), AlKhobar, Saudi Arabia, May 15-18, 2011.

114. Nasralla, R.A., H.A. Nasr-El-Din. Coreflood Study of Low Salinity Water

Injection in Sandstone Reservoirs. SPE-SAS paper 1272 presented at SPE/DGS Annual Technical Symposium and Exhibition, AlKhobar, Saudi Arabia, 15 – 18 May, 2011.

115. Saneifar, M., R.A. Nasralla, M. Fahes, H.A. Nasr-El-Din, and A.D. Hill.

Surface Tension of Spent Acids at High Temperature and Pressure. SPE-SAS paper 876 presented at SPE/DGS Annual Technical Symposium and Exhibition, AlKhobar, Saudi Arabia, 15 – 18 May, 2011.

116. Syed, A.M. and H.A. Nasr-El-Din. Elastic Properties of Emulsified Acids:

Effect of Emulsifier Concentration and Temperature. SPE SAS-1262 presented at the SPE Saudi Arabia Section Technical Symposium and Exhibition held in AlKhobar, Saudi Arabia, 15–18 May, 2011.

117. Bataweel, M.A., H.A. Nasr-El-Din, and D.S Schechtor Fluid Flow Characterization of Chemical EOR Flooding: A Computerized Tomography (CT) Scan Study. SPE 149066 presented at the SPE/DGS Saudi Arabia Section Technical Symposium and Exhibition, Al-Khobar, Saudi Arabia, 15-18 May, 2011,

118. Bataweel, M.A. and H.A. Nasr-El-Din. Minimizing Scale Precipitation in

Carbonate Cores Caused by Alkalis in ASP Flooding in High Salinity/High Temperature Applications Paper SPE 141451 presented at the International Symposium on Oil Field Chemistry Conference, Woodlands, TX, 11-13 April, 2011.

119. Rabie, A.I., M.A. Mahmoud, and H.A. Nasr-El-Din. Creation of Effective

Wormholes in Carbonate Formations Using a New Environmentally Friendly Chelating Agent: Reaction Kinetics and Transport Study. Paper SPE 139816 presented at the International Symposium on Oil Field Chemistry Conference, Woodlands, TX, 11-13 April, 2011.

38

120. Mahmoud, M.A. and H.A. Nasr-El-Din. Sandstone Acidizing Using A New

Class of Chelating Agents. Paper SPE 139815 presented at the International Symposium on Oil Field Chemistry Conference, Woodlands, TX, 11-13 April, 2011.

121. Gomaa, A.M., G. Wang, and H.A. Nasr-El-Din. An Experimental Study of

a New VES Acid System: Considering the Impact of CO2 Solubility. Paper SPE 141298 presented at the SPE International Symposium on Oilfield Chemistry, The Woodlands, Texas, USA, 20–22 April, 2011.

122. Mohamed, I.M., J. He, and H.A. Nasr-El-Din. Permeability Change during

CO2 Injection in Carbonate Formations: Experimental Study. Paper SPE 140943 presented at SPE Production Operations Symposium held in Oklahoma City, Oklahoma, USA, 27–29 March, 2011.

123. Mahmoud, M.A., and H.A. Nasr-El-Din. Effect of Lithology on the Flow of Chelating Agents in Porous Media during Matrix Acid Treatments. Paper SPE 140149 presented at the SPE Production and Operation Symposium, Oklahoma, 27-29 March, 2011.

124. Syed, A.M. and H.A. Nasr-El-Din. The Effect of the Emulsifier

Concentration and the Acid Volume Fraction on the Viscoelastic Properties of Emulsified Acids. Paper SPE 141664 to be presented at the 17th SPE Middle East Oil & Gas Show and Conference (MEOS), Manama, Bahrain, 20-23 March, 2011.

125. Kar, Y., Al Moajil, A.M., Nasr-El-Din, H.A., Al-Bagoury, M., and Steele,

C.D. Environmentally Friendly Dispersants for HP/HT Aqueous Drilling Fluids Containing Mn3O4, Contaminated with Cement, Rock Salt and Clay. Paper SPE 141957 prepared for presentation at the SPE Middle East Oil and Gas Show and Conference held in Manama, Bahrain, 6–9 March, 2011.

126. Rabie, A.I., and H.A. Nasr-El-Din. Measuring the Reaction Rate of Lactic

Acid with Calcite and Dolomite Using the Rotating Disk Apparatus. Paper SPE-140167 prepared for presentation at the 17th SPE Middle East Oil & Gas Show and Conference (MEOS), Manama, Bahrain, 20-23 March, 2011.

127. Rabie, A.I., and H.A. Nasr-El-Din. HCl-Formic In-Situ Gelled Acid for Carbonate Acidizing: Reaction Rate Study. SPE-140138 presented at the SPE Production Operations Symposium, Oklahoma, USA, 27-29 March, 2011.

128. Yu, M., Mu, Y., and H.A. Nasr-El-Din. Impact of High Temperatures on

the Rheological Properties of Carboxybetaine Visco-Elastic Surfactant Based Acid: Experimental and Molecular Dynamics Simulation Studies. Paper SPE

39

142264 presented at the Production and Operations Symposium, Oklahoma City, Oklahoma, 27 - 29 March, 2011.

129. Mohamed, I.M., He, J., and H.A. Nasr-El-Din. Permeability Change during CO2 Injection in Carbonate Formations: Experimental Study. Paper SPE 140979 presented at the SPE Americas E&P Health, Safety, Security and Environmental Conference held in Houston, Texas, USA, 21–23 March, 2011.

130. El-Monier, I.A., and H.A. Nasr-El-Din. A Study of Several Environmentally

Friendly Clay Stabilizers. SPE 142755 presented at the SPE Project and Facilities Challenges Conference at METS, Doha, Qatar, 13-16 February, 2011.

131. Mohamed, I.M., and H.A. Nasr-El-Din. Sulfate precipitation during CO2

Sequestration in Carbonate Rock. Paper SPE 139828 presented at the SPE Projects and Facilities Challenges Conference at METS held in Doha, Qatar, 13–16 February, 2011.

132. Pournik, M., Li, L., B. Smith, and H.A. Nasr-El-Din. Laboratory Evaluation

of Acid Refracturing Performance. Paper SPE 138623 presented at the Latin American and Caribbean Petroleum Engineering Conference held in Lima, Peru, 1-3 December, 2010.

133. Diaz, N.J., M.R.G. Bell, J.T. Hardesty, A.D. Hill, H.A. Nasr-El-Din. An

Evaluation of the Impact of Reactive Perforating Charges on Acid Wormholing in Carbonates. SPE 138434 presented at the Latin American and Caribbean Petroleum Engineering Conference held in Lima, Peru, 1-3 December, 2010.

134. Mohamed, I.M., J. He, M.A. Mahmoud, and H.A. Nasr-El-Din. Effects of

Pressure, CO2 Volume, and the CO2 to Water Volumetric Ratio on Permeability Change during CO2 Sequestration. Paper SPE 136394 presented at the Abu Dhabi International Petroleum Exhibition & Conference held in Abu Dhabi, UAE, 1–4 November, 2010.

135. Rostami, A., H.A. Nasr-El-Din. A New Technology for Filter Cake

Removal. Paper SPE 136400 presented at the SPE Russian Oil & Gas, Moscow, Russia. 26-28 October, 2010.

136. Pournik, M., L. Li, B. Smith, and H.A. Nasr-El-Din. Effect of Acid

Spending on Etching and Acid Fracture Conductivity. Paper SPE 136217 presented at the Russian Oil and Gas Technical Conference and Exhibition held in Moscow, Russia, 26-28 October, 2010.

137. Rostami, A. and H.A. Nasr-El-Din. Using Solid-acid Precursor for Filter

Cake Removal in a Self-destructing System for Horizontal and Multilateral Wells. Paper SPE 139087 presented at the SPE Eastern Regional Meeting, Morgantown, West Virginia, 12-14 October, 2010.

40

138. Mahmoud, M.A., H.A. Nasr-El-Din, C.A. De Wolf, and J.N. LePage.

Optimum Injection Rate of a New Chelate that can be Used to Stimulate Deep Carbonate Reservoirs. Paper SPE 133497 presented at the ATCE, Florence, Italy, 20-22 September, 2010.

139. Gomaa, A.M. and H.A. Nasr-El-Din. Insights into the Wormhole

Propagation Rate of Polymer-Based Gelled and In-Situ Gelled Acids. Paper SPE 133303 presented at the SPE Production and Operations Conference and Exhibition held in Tunisia, 8–10 June, 2010.

140. Rabie, A., A.M. Gomaa, and H.A. Nasr-El-Din. Determination of Reaction

Rate of In-situ Gelled Acids Using Rotation Disk Apparatus. Paper SPE 133501 presented at the SPE Production and Operations Conference and Exhibition held in Tunisia, 8–10 June, 2010.

141. El-Monier, I.A., H.A. Nasr-El-Din. A New Environmentally Friendly Clay

Stabilizer. SPE 136061 presented at the SPE Production and Operations Conference and Exhibition held in Tunisia, 8–10 June, 2010.

142. Al-Moajil, A. and H.A. Nasr-El-Din: Reaction of Hydrochloric Acid with

Filter Cake Created by Mn3O4-Based Drilling Fluids. SPE 133467 presented at the SPE Trinidad and Tobago Energy Resources Conference held in Port of Spain, Trinidad, 27-30 June, 2010.

143. Mahmoud, M.A., H.A. Nasr-El-Din, C.A. De Wolf, J.N. LePage: “An

Alternative Stimulation Fluid for Deep Reservoirs: A Core Flood Study," SPE 132286 presented at the SPE Trinidad and Tobago Energy Resources Conference held in Port of Spain, Trinidad, 27-30 June, 2010.

144. Gomaa, A.M., M. Mahmoud, and H.A. Nasr-El-Din: “A Study of Diversion

Using In-Situ Gelled Acid: Polymer-Based Systems," SPE 132535 presented at the SPE Trinidad and Tobago Energy Resources Conference held in Port of Spain, Trinidad, 27-30 June, 2010.

145. Bataweel, M.A. and H.A. Nasr-El-Din: "Minimizing Scale Precipitation

Caused by Alkali in ASP Flooding in High Salinity / High Temperature Applications. SPE EOR Conference at Oil & Gas West Asia, 2010.

146. Gomaa, A.M. and H.A. Nasr-El-Din. Propagation of Regular HCl Acids in

Carbonate Rocks: The Impact of an In-Situ Gelled Acid Stage. Paper SPE 130586 presented at the International Oil & Gas Conference and Exhibition in China (IOGCEC), Beijing, China, 8 -10 June, 2010.

147. Mahmoud, M.A., H.A. Nasr-El-Din, C.A. De Wolf, J.N. LePage: “An

Alternative Stimulation Fluid for Deep Carbonate Reservoirs: A Core Flood

41

Study” Paper SPE 131626 presented at the CPS/SPE International Oil & Gas Conference and Exhibition in China held in Beijing, China, 8–10 June, 2010.

148. Alotaibi, M.B., R.N. Azmy and H.A. Nasr-El-Din. A Comprehensive EOR

Study Using Low Salinity Water in Sandstone Reservoirs. Paper OTC-20718 presented at the Offshore Technology Conference, Houston, Texas, 3 - 6 May, 2010.

149. Lei, G., Li, L., H.A. Nasr-El-Din. New Gel Aggregates for Water Shut-Off

Treatments. Paper SPE 129960 presented at the SPE Improved Oil Recovery Symposium, Tulsa, Oklahoma, 24-28 April, 2010.

150. Alotaibi, M.B., R.N. Azmy, and H.A. Nasr-El-Din. EOR Study Using

Optimum Salinity Water in Clastic Reservoirs. Paper SPE 129976 presented at the SPE Improved Oil Recovery Symposium, Tulsa, Oklahoma, 24-28 April, 2010.

151. Alotaibi, M.B., R.N. Azmy, and H.A. Nasr-El-Din. Wettability Challenges in

Carbonate Reservoirs. Paper SPE 129972 presented at the SPE Improved Oil Recovery Symposium, Tulsa, Oklahoma, 24-28 April, 2010.

152. Yu, M., M. Mohmoud, H.A. Nasr-El-Din: “Propagation and Retention of

Viscoelastic Surfactants Following Matrix Acidizing Treatments in Carbonate Cores,” SPE 128047 presented at the SPE International Symposium and Exhibition on Formation Damage Control held in Lafayette, LA, Feb. 10-12, 2010.

153. Lingling, Li, H.A. Nasr-El-Din: “Impact of Organic Acids/Chelating Agents

on Rheological Properties of Amidoamine Oxide Surfactant,” SPE 128091 presented at the SPE International Symposium and Exhibition on Formation Damage Control held in Lafayette, LA, Feb. 10-12, 2010.

154. Mahmoud, M., H.A. Nasr-El-Din, C.A. De Wolf, J.N. LePage: “Evaluation

of a New Environmentally Friendly Chelating Agent for High-Temperature Applications,” SPE 127923 presented at the SPE International Symposium and Exhibition on Formation Damage Control held in Lafayette, LA, Feb. 10-12, 2010.

155. Al-Ghamdi, A., M.A. Mohmoud, A.D. Hill, and H.A. Nasr-El-Din: “When

Do Surfactant-Based Acids Work as Diverting Agents? SPE 128074 presented at the SPE International Symposium and Exhibition on Formation Damage Control held in Lafayette, LA, Feb. 10-12, 2010.

156. Pournik, M., A. Gomaa, H.A. Nasr-El-Din: “Influence of Acid Fracture

Fluid Properties on Acid-Etched Surfaces and Resulting Fracture Conductivity,” SPE 128070 presented at the SPE International Symposium and Exhibition on Formation Damage Control held in Lafayette, LA, Feb. 10-12, 2010.

42

157. Gomaa, A.M., and H.A. Nasr-El-Din. Rheological and Core Flood Studies of Gelled and In-Situ Gelled Acids. Paper SPE 128056 presented at the SPE North Africa Technical Conference and Exhibition held in Cairo, Egypt, 14–17 February, 2010.

158. Gomaa, A.M., and H.A. Nasr-El-Din. Rheological Properties of Polymer-

Based In-Situ Gelled Acids: Experimental and Theoretical Studies. Paper SPE 128057 presented at the Oil and Gas India Conference and Exhibition, Mumbai, India, 20–22 January, 2010.

159. Gomaa, A., M. Mahmoud, H.A. Nasr-El-Din: “When Polymer-based Acids

can be used? A Core Flood Study.,” IPTC 13739 presented at the International Petroleum Technology Conference (IPTC) held in Doha, Qatar, 7-9 December 2009.

160. Samuel, M., A. Mohsen, A. Bin Ejan, Y. Ooi, S. Ashraf, and H.A. Nasr-El-

Din: “A Novel α-Amylase Enzyme-Stabilizer for Applications at High Temperatures,” SPE 125024 presented the SPE Annual Technical Conference and Exhibition held in New Orleans, Louisiana, 4–7 October, 2009.

161. Pournik, M., M. Mahmoud and H.A. Nasr-El-Din: “Acid Re-fracturing: Is it

a Good Practice?,” SPE 124874 presented the SPE Annual Technical Conference and Exhibition held in New Orleans, Louisiana, 4–7 October, 2009.

162. Al-Khaldi, M., H.A. Nasr-El-Din, H.K. Sarma: “Application of Citric Acid in

Acid Stimulation Treatments,” SPE 2009-015 presented at the Canadian International Petroleum Conference, Calgary, AB, June 16-18, 2009.

163. Al-Otaibi, M. and H.A. Nasr-El-Din: “Effect of Brine Salinity on Reservoir

Fluids Interfacial Tension,” SPE 121569 presented at the Oilfield Chemistry Conference, SPE EUROPEC/EAGE Annual Conference and Exhibition Amsterdam, The Netherlands, 8–11 June, 2009.

164. LePage, J.N., C.A. De Wolf, J.H. Bemelaar, and H.A. Nasr-El-Din: “An

Environmentally Friendly Stimulation Fluid for High Temperature Applications,” SPE 121709 presented at the Oilfield Chemistry Conference, Woodlands, TX, 20–22 April, 2009.

165. Al-Ghamdi, A., M.A. Mohmoud, A.D. Hill, and H.A. Nasr-El-Din:

“Propagation of Viscoelastic Surfactant-Based Acids in Carbonate Cores” SPE 121713 presented at the Oilfield Chemistry Conference, Woodlands, TX, 20–22 April, 2009.

166. Sultan, A., B. Balbuena, A.D. Hill, H.A. Nasr-El-Din: “ab initio and

Molecular Simulation Studies of Organic and Inorganic Counterions' Effect on Anionic Viscoelastic Surfactant,” SPE 121722 presented at the Oilfield Chemistry

43

Conference, Woodlands, TX, 20–22 April, 2009.

167. Sultan, A., B. Balbuena, A.D. Hill, H.A. Nasr-El-Din: “Theoretical Study on the Properties of Cationic, Amidoamine Oxide and Betaine Viscoelastic Diverting Surfactants in Gas and Water Solution,” SPE 121727 presented at the Oilfield Chemistry Conference, Woodlands, TX, 20–22 April, 2009.

168. Al-Yami, A.S., H.A. Nasr-El-Din, A.S. Al-Humaidi: “An Innovative Cement

Formula to Prevent Gas Migration Problems in HT/HP Wells” SPE 120885 presented at the Oilfield Chemistry Conference, Woodlands, TX, 20–22 April, 2009.

169. Al-Yami, A.S., H.A. Nasr-El-Din: “Completion Fluids Challenges in

Maximum Reservoir Contact Wells in Saudi Arabia,” SPE 121638 presented at the Oilfield Chemistry Conference, Woodlands, TX, 20–22 April, 2009.

170. Lingling, Li, H.A. Nasr-El-Din, K. Cawiezel: “Rheological Properties of a

New Class of Viscoelastic Surfactant,” SPE 121716 presented at the Oilfield Chemistry Conference, Woodlands, TX, 20–22 April, 2009.

171. Yu, M., M. Mohmoud, H.A. Nasr-El-Din: “Quantitative Analysis of an

Amphoteric Surfactant in Acidizing Fluids and Coreflood Effluent,” SPE 121715 presented at the Oilfield Chemistry Conference, Woodlands, TX, 20–22 April, 2009.

172. Rostami, A., H.A. Nasr-El-Din: “Review and Evaluation of Corrosion

Inhibitors Used in Well Stimulation,” SPE 121726 presented at the Oilfield Chemistry Conference, Woodlands, TX, 20–22 April, 2009.

173. Gomaa, A., H.A. Nasr-El-Din: “New Insights into the Viscosity of

Polymer-Based In-Situ Gelled Acids,” SPE 121728 presented at the Oilfield Chemistry Conference, Woodlands, TX, 20–22 April, 2009.

174. Alkhaldi, M.H., H.A. Nasr-El-Din, S. Hemanta: “Kinetics of the Reaction of

Citric Acid with Calcite,” SPE 118724 presented at the Oilfield Chemistry Conference, Woodlands, TX, 20–22 April, 2009.

175. Al-Otaibi, M. and H.A. Nasr-El-Din: “Chemistry of Injection Water and Its

Impact on Oil Recovery in Carbonate and Clastic Formations,” SPE 121565 presented at the Oilfield Chemistry Conference, Woodlands, TX, 20–22 April, 2009.

176. Gomaa, A. and H.A. Nasr-El-Din: Acid Fracturing: The Effect of

Formation Strength on Fracture Conductivity,” SPE 119523 presented at the Hydraulic Fracturing Technology Conference held in the Woodlands, TX, 19-21 Jan., 2009.

44

177. Li, L., H.A. Nasr-El-Din, F. Chang, T. Lindvig: “Reaction of Organic Acids

and Chelating Agents with Calcite,” IPTC 12886 presented at the International Petroleum Technology Conference held in Kuala Lumpur, Malaysia, 3–5 December, 2008.

178. Al-Mutairi, S., A.D. Hill, H.A. Nasr-El-Din: “Fracture Conductivity Using

Emulsified Acids: Effects of Emulsifier Concentration and Acid Volume Fraction,” IPTC 12186 presented at the International Petroleum Technology Conference held in Kuala Lumpur, Malaysia, 3–5 December, 2008.

179. Abdel Fatah, W. and H.A. Nasr-El-Din: “Acid Emulsified in Xylene: A

Cost Effective Treatment to Remove Asphaltene Deposition and Enhance Well Productivity,” SPE 117251 presented at the Eastern Regional/AAPG Eastern Section Joint Meeting held in Pittsburgh, Pennsylvania, 11–15 October, 2008.

180. Al-Yami, A.S., H.A. Nasr-El-Din, M. Al-Shafei, Saudi Aramco, M.A.

Bataweel Impact of Water-based Drilling-in Fluids on Solids Invasion and Damage Characteristics,” SPE 117162 presented at the Eastern Regional/AAPG Eastern Section Joint Meeting held in Pittsburgh, Pennsylvania, 11–15 October, 2008.

181. Al-Yami, A.S., H.A. Nasr-El-Din, A. Al-Humaidi: “Water Swelling Packers:

Advantages and Limitations,” SPE 114812 presented at the Asia Pacific Oil & Gas Conference and Exhibition held in Perth, Australia, 20–22 October, 2008.

182. Al-Yami, A.S., H.A. Nasr-El-Din, A.S. Al-Humaidi: “Stimulation of Wells

Completed with Water-Swelling Packers” SPE 114110 presented at the SPE Annual Technical Conference and Exhibition held in Denver, CO, Sept. 21-24, 2008.

183. Al-Dhafeeri. A., H.A. Nasr-El-Din, H.K. Al-Mubarak J. Al-Ghamdi: "Gas

Shutoff Treatment in Carbonate Reservoir for Oil Wells in Saudi Arabia" SPE 114323 presented at the SPE Annual Technical Conference and Exhibition held in Denver, CO, Sept. 21-24, 2008.

184. Chang, F.F., H.A. Nasr-El-Din, T. Lindvig, and X.W. Qiu: "Matrix Acidizing

of Carbonate Reservoirs Using Organic Acids and Mixture of HCl and Organic Acids" SPE 116601 presented at the SPE Annual Technical Conference and Exhibition held in Denver, CO, Sept. 21-24, 2008.

185. Nasr-El-Din, H.A., S. Al-Dirweesh, M. Samuel: "Development and Field

Application of a New, Highly Stable Emulsified Acid" SPE 115926 presented at the SPE Annual Technical Conference and Exhibition held in Denver, CO, Sept. 21-24, 2008.

45

186. Al-Yami, A.S., H.A. Nasr-El-Din, A.S. Al-Humaidi, M.K. Al-Arfaj, S.H. Al-Saleh, M.Z. Awang and K.S. Al-Mohanna: “Effects of HCl Acid and Brines on Water Swelling Packers,” SPE 114812 presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition held in Jakarta, Indonesia, 25–27 August 2008.

187. Al-Yami, A.S., H.A. Nasr-El-Din, S.H. Al-Saleh, A. Al-Humaidi, M.K. Al

Arfaj, M.Z. Awang and K.S. Al-Mohanna: “Lab Investigation of Water Swelling Elastomers for Smart Well Completions,” SPE 114814 presented at the CIPC/SPE GTS 2008 Joint Conference held in Calgary, AB Canada, 16-19-June, 2008.

188. Al-Dhafeeri. A., H.A. Nasr-El-Din, Al-Harith, A.: “Evaluation of Rigless

Water Shutoff Treatments to be Used in Arab-C Carbonate Reservoir in Saudi Arabia,” SPE 114331 presented at the CIPC/SPE GTS 2008 Joint Conference to be held in Calgary, AB Canada, 16-19-June, 2008.

189. Al-Yami, A., H.A. Nasr-El-Din, S.H. Al-Saleh, A. Al-Humaidi, M.K. Al Arfaj,

M.Z. Awang and K. S. Al-Mohanna: “Lab Investigation of Oil Swelling Elastomers for Smart Well Completions,” SPE 113135 presented at the EUROPEC held in Rome, Italy, 9-12 June 2008.

190. Al-Taq, A.A., A. Al-Sheikh, H.A. Nasr-El-Din: “Inhibition Performance of a

New Series of Mono/Diamine-based Corrosion Inhibitors for HCl Acid Solutions," SPE 114087 presented at the SPE Oilfield Corrosion Symposium, Aberdeen, Scotland, May 27, 2008.

191. Al-Yami, A., H.A. Nasr-El-Din, S.H. Al-Saleh, A.S. Al-Humaidi, M.K. Al-

Arfaj, M.Z. Awang and K.S. Al-Mohanna: “Lab Investigation of Oil Swelling Elastomers for Smart Wells,” SPE/OTC 19403 presented at the Offshore Technology Conference held in Houston, TX, 5–8 May 2008.

192. Al-Yami, A., H.A. Nasr-El-Din, S.H. Al-Saleh, A. Al-Humaidi, M.K. Al Arfaj,

and N. Al-Shuker: “Optimization of Low-Density Cement Based on Hollow Glass Microspheres: Lab Studies and Field Applications,” SPE 113138 presented at the Western Regional Meeting held in Bakersfield California 31 March-3 April 2008.

193. Al-Yami, A., H.A. Nasr-El-Din, M. Al-Arfaj, S.H. Al-Saleh, A.S. Al-Humaidi

N.A. Al-Shuker: "Evaluation and Optimization of Low-Density Cement: Laboratory Studies and Field Applications,” SPE 113090 presented at the SPE Indian Oil and Gas Technical Conference and Exhibition held in Mumbai, India, 4–6 March 2008.

194. Al-Yami, A., H.A. Nasr-El-Din, S. Jennings, A. Khafaji, A. Al-Humaidi:

"New Cement Systems Developed for Sidetrack Drilling,” SPE 113092 presented

46

at the SPE Indian Oil and Gas Technical Conference and Exhibition held in Mumbai, India, 4–6 March 2008.

195. Ahmed, W.A., H.A. Nasr-El-Din, T. Moawad, A. Elgibaly: “Effects of

Crosslinker Type and Additives on the Performance on In-Situ Gelled Acids,” SPE 112448 presented at the SPE International Symposium and Exhibition on Formation Damage Control held in Lafayette, LA, Feb. 13-15, 2008.

196. Al-Taq, A.A., H.A. Nasr-El-Din, M.M. Saudi, L. Sierra: “Potential Damage

Due to Permeability Modifiers: Laboratory Studies and Case Histories,” SPE 112458 presented at the SPE International Symposium and Exhibition on Formation Damage Control held in Lafayette, LA, Feb. 13-15, 2008.

197. Alotaibi, M.B., H.A. Nasr-El-Din, A.D. Hill: “Characteristics and Removal

of Filter Cake Formed by Formate-Based Drilling Mud,” SPE 112427 presented at the SPE International Symposium and Exhibition on Formation Damage Control held in Lafayette, LA, Feb. 13-15, 2008.

198. Al-Mutairi, S.H., H.A. Nasr-El-Din, A.D. Hill: “Effect of Droplet Size on the

Reaction Kinetics of Emulsified Acid with Calcite,” SPE 112454 presented at the SPE International Symposium and Exhibition on Formation Damage Control held in Lafayette, LA, Feb. 13-15, 2008.

199. Al-Yami, A.S., H.A. Nasr-El-Din, A.A. M.A. Bataweel, A. Al-Majed, H.

Menouar: “Formation Damage Induced by Various Water-Based Fluids Used to Drill HP/HT Wells,” SPE 112421 presented at the SPE International Symposium and Exhibition on Formation Damage Control held in Lafayette, LA, Feb. 13-15, 2008.

200. Al-Moajil, A.M., H.A. Nasr-El-Din, A. Al-Yami, A. Al-Aamri, and A. Al-Aqil:

“Removal of Filter Cake Formed by Manganese Tetraoxide-Based Drilling Fluids,” SPE 112450 presented at the SPE International Symposium and Exhibition on Formation Damage Control held in Lafayette, LA, Feb. 13-15, 2008.

201. Al-Nakhli, A., H.A. Nasr-El-Din, A.A. Al-Baiyat: “Interactions of Iron and

Viscoelastic Surfactants: A New Formation-Damage Mechanism,” SPE 112465 presented at the SPE International Symposium and Exhibition on Formation Damage Control held in Lafayette, LA, Feb. 13-15, 2008.

202. Al-Muntasheri, Ghaithan A., Pacelli L.J. Zitha, and Hisham A. Nasr-El-

Din: “Evaluation of a New Cost-Effective Organic Gel System for High Temperature Water Control,” SPE 11080 presented at the International Petroleum Technology Conference, Dubai, U.A.E, 4-6 December 2007.

47

203. Al-Mohammed, A., H.A. Nasr-El-Din, O. Al-Fuwaires, A. Al-Aamri: “Degradation of High pH Borate Gels,” SPE 11585 presented at the Intl. Petroleum Technology Conference, held in Dubai, UAE, December 4-6, 2007.

204. Alotaibi, M.B., H.A. Nasr-El-Din, A.D. Hill: “Clean-up of Formate Mud

Damage in Gas Wells: Lab Studies and a Case History,” SPE 11652 presented at the Intl. Petroleum Technology Conference, held in Dubai, UAE, December 4-6, 2007.

205. Nasr-El-Din, H.A., A. Al-Mohammed, O. Al-Fuwaires, A. Al-Aamri: "A

Study of Gel Degradation, Surface Tension, and Their Impact on the Productivity of Hydraulically Fractured Gas Wells" SPE 109690 presented at the Annual Technical Conference and Exhibition held in Anaheim, CA, Nov. 11 to 14, 2007.

206. Al-Yami, A., H.A. Nasr-El-Din, A. A. Al-Majed and H. Menouar: “An

Innovative Manganese Tetra-oxide/KCl Water-Based Drill-in Fluid for HT/HP Wells," SPE 110638 presented at the Annual Technical Conference and Exhibition held in Anaheim, CA, Nov. 11 to 14, 2007.

207. Al-Taq, A., H.A. Nasr-El-Din, S. Leopolodo: "Effective Acid Diversion and

Water Control in Carbonate Reservoirs Using an Associative Polymer Treatment: Case Histories from Saudi Arabia," SPE 109714 presented at the Annual Technical Conference and Exhibition held in Anaheim, CA, Nov. 11 to 14, 2007.

208. Nasr-El-Din, H.A., A.A. Zahrani, F.O. Garzon, C.A.F. Giraldo, I.M. AL-

Hekami, and H.M. Al-Marri: “Acid Fracturing of Gas Wells Using Solid Acid: Lessons Learned From First Field Application," SPE 110895 presented at the Annual Technical Conference and Exhibition held in Anaheim, CA, Nov. 11 to 14, 2007.

209. Al-Otaibi, N., H.A. Nasr-El-Din, A.D. Hill: “Optimum Method to Remove

Formate Drill-in Fluid Damage in Extended Reach Wells," SPE 109754 presented at the Asia Pacific Oil and Gas Conference & Exhibition (APOGCE) held in Jakarta, Indonesia, 30 October - 1 November, 2007.

210. Al-Yami, A., H.A. Nasr-El-Din: “An Innovative Approach for Long Term

Zonal Isolation in HT/HP Gas Wells SPE 109075 presented at the Asia Pacific Oil and Gas Conference & Exhibition (APOGCE) held in Jakarta, Indonesia, 30 October - 1 November, 2007.

211. Taylor, K.C. and H.A. Nasr-El-Din: “Hydrophobically Associating

Polymers for Oilfield Applications," CIPC Paper No. 2007-016 presented at the Canadian International Petroleum Conference held in Calgary, Alberta, Canada, June 12 - 14, 2007.

48

212. Taylor, K.C. and H.A. Nasr-El-Din: "Measurement of Acid Reaction Rates with the Rotating Disk Apparatus," CIPC Paper No. 2007-015 presented at the Canadian International Petroleum Conference held in Calgary, Alberta, Canada, June 12 - 14, 2007.

213. Al-Yami, A., M. Al-Arfaj, H.A. Nasr-El-Din, S. Jennings, A. Khafaji, M. Al-

Ariani, A. Al-Humaidi: "New Retarder Systems to Mitigate Differential Cement Setting in Long Deep Liners: Development & Field Application," SPE 107538 presented at the SPE/IADC Middle East Drilling Technology Conference & Exhibition held in Cairo, Egypt, Oct. 22 to 24, 2007.

214. Al-Taq, A., H.A. Nasr-El-Din, J.K. Beresky, K.M. Naimi S. Leopolodo, L.O.

Reddy: "Simultaneous Acid Diversion and Water Control in Carbonate Reservoirs: A Case History from Saudi Arabia," SPE 106951 presented at the SPE Europec/EAGE Annual Conference and Exhibition held in London, UK, 11–14 June 2007.

215. Beheiri, F.I., H.A. Nasr-El-Din: “Performance Evaluation of Acid

Treatments in Seawater Injectors presented at the SPE Europec/EAGE Annual Conference and Exhibition held in London, UK, 11–14 June 2007.

216. Al-Mutairi, S.H., A.D. Hill, H.A. Nasr-El-Din: “Effect of Droplet Size,

Emulsifier Concentration and Acid Volume Fraction on the Rheological Properties and Stability of Emulsified Acid,” paper SPE 107741 presented at the 7th SPE European Formation Damage Conference held in Scheveningen, The Netherlands, 30 May - 1 June, 2007.

217. Beheiri, F.I., H.A. Nasr-El-Din, K. Rahman: “Performance Evaluation of

Acid Treatments in Seawater Injectors with Reference to Diversion Techniques,” SPE 106786 presented at the 7th SPE European Formation Damage Conference held in Scheveningen, The Netherlands, 30 May - 1 June 2007.

218. Nasr-El-Din, H.A., A. Al-Mohammed, A. Al-Aamri, F. Chang: "Quantitative

Analysis of Reaction Rate Retardation in Surfactant-based Acids," SPE 107451 presented at the 7th SPE European Formation Damage Conference held in Scheveningen, The Netherlands, 30 May - 1 June 2007.

219. Nasr-El-Din, H.A., A. Al-Nakhli, S. Leopoldo, T. Walton, M. Van Domelen:

“Optimization of Surfactant-based Fluids for Acid Diversion," SPE107687 presented at the 7th SPE European Formation Damage Conference held in Scheveningen, The Netherlands, 30 May - 1 June 2007.

220. Nasr-El-Din, H.A., M. Al-Anazi, A. Al-Zahrani, S. Kelkar: "Investigation of

a New Single-stage Sandstone Acidizing Fluid for High Temperature Formations," SPE 107636 presented at the 7th SPE European Formation

49

Damage Conference held in Scheveningen, The Netherlands, 30 May - 1 June 2007.

221. Al-Moajil, A., H.A. Nasr-El-Din, and A. Al-Aamri: "Evaluation of In-Situ

Generated Acids for Filter Cake Clean Up," SPE 107537 presented at the 7th SPE European Formation Damage Conference held in Scheveningen, The Netherlands, 30 May - 1 June 2007.

222. Beheiri, F.I., H.A. Nasr-El-Din, M.K. Rahman, S.A. Shedid: “Performance

Evaluation of Acid Treatments in Seawater Injectors with Reference to Two Clean-up Techniques,” SPE 105092 presented at the 15th Middle East Oil & Gas Show and Conference held in Bahrain March 11-14, 2007.

223. Leal, J., R.J. Solares, H.A. Nasr-El-Din, C. Franco, F. Garzon, H.M. Marri,

S.A. Aqeel, G. Izquierdo: “A Systematic Approach to Remove Iron Sulfide Scale: A Case History,” SPE 105607 presented at the 15th Middle East Oil & Gas Show and Conference held in Bahrain March 11-14, 2007.

224. Nasr-El-Din, H.A., F. Garzon, S.H. Al-Mutairi, S. Al-Driweesh, A.M. Al-

Harith: "Lessons Learned from Re-Pickling Old/Sour Gas Wells," SPE 105633 presented at the 15th Middle East Oil & Gas Show and Conference held in Bahrain March 11-14, 2007.

225. Al-Yami, A., H.A. Nasr-El-Din, S.H. Al-Saleh, A. Al-Humaidi, C. Miller, H.

Al-Yami, Y.A. Elmarsafawi: "Long Term Evaluation of Low Density Cement: Lab Study and Field Application," SPE 105340 presented at the 15th Middle East Oil & Gas Show and Conference held in Bahrain, March 11-14, 2007.

226. Nasr-El-Din, H.A., M. Zabihi, S. Kelkar, M. Samuel: “Development and

Field Application of a New Hydrogen Sulfide Scavenger for Acidizing Sour-Water Injectors,” SPE 106442 presented at the International Symposium on Oilfield Chemistry held in The Woodlands, TX, Feb 28 – March 02, 2007.

227. Nasr-El-Din, H.A., A. Al-Zahrani, J. Still, T. Lesko, S. Kelkar: “Laboratory

Evaluation of an Innovative System for Fracture Stimulation of High-Temperature Carbonate Reservoirs," SPE 106054 presented at the International Symposium on Oilfield Chemistry held in The Woodlands, TX, Feb. 28 – March 02, 2007.

228. Chang, F.F., X., Qiu, H.A. Nasr-El-Din: "Chemical Diversion Techniques

Used for Carbonate Matrix Acidizing: An Overview and Case Histories," SPE 106444 presented at the International Symposium on Oilfield Chemistry held in The Woodlands, TX, Feb 28 – March 02, 2007.

229. Nasr-El-Din, H.A., A. Al-Yami, A. Al-Aamri, Y. Elmarsafawi: “A Study of

Acid Cement Reactions Using the Rotating Disk Apparatus,” SPE 106443

50

presented at the International Symposium on Oilfield Chemistry held in The Woodlands, TX, Feb 28 – March 02, 2007.

230. Al-Muntasheri, G.A., H.A. Nasr-El-Din, K. Al-Noami, P.L.J. Zitha: “A

Study of Polyacrylamide Based Gels Crosslinked with Polyethyleneimine,” SPE 105925 presented at the International Symposium on Oilfield Chemistry held in The Woodlands, TX, Feb 28 – March 02, 2007.

231. Al-Mohammed, A., H.A. Nasr-El-Din, A. Al-Aamri, O. Al-Fuwaires:

“Reaction of Gelled Acids with Calcite,” SPE 103979 presented at the SPE International Oil & Gas Conference and Exhibition held in Beijing, China, 5–7 December 2006.

232. Al-Otaibi, M.B., Nasr-El-Din, H.A., Al-Moajil, A.: “In-Situ Acid System to

Clean Up Drill-in Fluid Damage in High Temperature Gas Wells," SPE 103846 presented at the IADC/SPE Asia Pacific Drilling Technology Conference (APDT, in Bangkok, Thailand, 13-15 November, 2006.

233. Elmarsafawi, Y.A., A. Al-Yami, H.A. Nasr-El-Din: “A New Cementing

Approach to Improve and Provide Long-Term Zonal Isolation," SPE 100558 presented at the SPE Asia Pacific Oil and Gas Conference and Exhibition (APOGCE) in Adelaide, South Australia, 11-13 September, 2006.

234. Okasha, T., Nasr-El-Din, H.A.: “Impact of a Novel Scale Inhibitor System

on the Wettability of Paleozoic Unayzah Sandstone Reservoir, Saudi Arabia,” presented at the International Symposium of the Society of Core Analysts held in Trondheim, Norway, 12-16 September, 2006.

235. Al-Muntasheri, G.A., H.A. Nasr-El-Din, and P.L.J. Zitha: "Viscoelastic

Properties of an Organically Cross-linked Gel at High Temperature and Pressure" SPE 104071 presented at the SPE International Oil Conference and Exhibition held in Cancun, Mexico, Aug. to 02 Sept., 2006.

236. Nasr-El-Din, H.A., S. Driweesh, S. Leopoldo, M. Van Domelen, T.

Walton: "First Field Application of In-Situ Gelled HCl-Formic Acid System," SPE 103978 presented at the SPE International Oil Conference and Exhibition held in Cancun, Mexico, 31 Aug. to 02-Sept., 2006.

237. Nasr-El-Din, H.A., H.A. Al-Saiari, A.A. Al-Ruwaily: “Removal and

Mitigation of Calcium Carbonate Scale in a Sandstone Reservoir in Saudi Arabia: Long-Term Field Monitoring,” SPE 102863 presented at the SPE Annual Technical Conference & Exhibition, San Antonio, TX, 24-27 Sept., 2006.

238. Nasr-El-Din, H.A., M. Zabihi, K. Al-Dossary, M.A. Djelliout, S. Kelkar:

“Restoring Injectivity of Wells Drilled in Sour Carbonate Formations,” SPE 102860 presented at the SPE Annual Technical Conference & Exhibition, San

51

Antonio, TX, 24-27 Sept., 2006.

239. Nasr-El-Din, H.A., S.M. Al-Driweesh, J.B. Chesson, and A.S. Metcalf: “Fracture Acidizing: What Role Does Formation Softening Play in Production Response?,” SPE 103344 presented at the SPE Annual Technical Conference & Exhibition, San Antonio, TX, 24-27 Sept., 2006.

240. Al-Mohammed, A., H.A. Nasr-El-Din, A. Al-Aamri: “Reaction of Calcite

with Surfactant-Based Acids,” SPE 102838 presented at the SPE Annual Technical Conference & Exhibition, San Antonio, TX, 24-27 Sept., 2006.

241. Al-Yami, A., S. Jennings, H.A. Nasr-El-Din, A. Khafaji, A. Al-Humaidi: “A

New Cement Developed for High-Temperature Sidetracks,” SPE 102596 presented at the SPE Annual Technical Conference & Exhibition, San Antonio, TX, 24-27 Sept., 2006.

242. Nasr-El-Din, H.A., K. Bartko, H. Al-Ghadban, V. Ramanathan, S. Kelkar,

M. Samuel: “Acid Fracturing of Deep Gas Wells Using a Surfactant-Based Acid: Long-Term Effects on Gas Production Rate,” SPE 102469 presented at the SPE Annual Technical Conference & Exhibition, San Antonio, TX, 24-27 September, 2006.

243. Nasr-El-Din, H.A., J.B. Chesson, K.E. , C.S. Devine: “Lessons Learned

and Guidelines for Matrix Acidizing and Diversion Techniques in Carbonate Formations,” SPE-102468 presented at the SPE Annual Technical Conference & Exhibition, 24-27 September, 2006.

244. Nasr-El-Din, H.A., J.B. Chesson, K.E. Cawiezel, C.S. Devine: “Field

Success in Carbonate Acid Diversion, Utilizing Laboratory Data Generated by Parallel Flow Testing,” SPE 102828 presented at the SPE Annual Technical Conference & Exhibition, San Antonio, TX, 24-27 Sept., 2006.

245. Raju, K.U., H.A. Nasr-El-Din, H.A. Al-Saiari, J.M. Abduljabbar, “Injection

of Produced Water Mixed with Incompatible Aquifer Water into a Carbonate Reservoir – A Pilot Test,” SPE 100443 presented at the SPE International Oilfield Scale Symposium held in Aberdeen, United Kingdom, 30 May–1 June 2006.

246. Nasr-

El-Din, H.A., Al-Saiari, H.A., Al-Ruwaily, A.A. and Al-Gamber, S.D.: “Field Application of Emulsified Scale Inhibitor Treatment to Mitigate Calcium Carbonate Scale in Horizontal Wells,” SPE 100456 presented at the SPE International Oilfield Scale Symposium held in Aberdeen, United Kingdom, 30 May–1 June 2006.

247. Tomson, M.B., A.T. Kan, F.G. Gongmin, S.D. Dong, H.A. Nasr-El-Din,

H.A. Al-Saiari, M. Al-Thubaiti: “Mechanistic Understanding of Rock/Phosphonate

52

Interactions and the Effect of Metal Ions on Inhibitor Retention,” SPE 100494 presented at the SPE International Oilfield Scale Symposium held in Aberdeen, United Kingdom, 30 May–1 June 2006.

248. Nasr-El-Din, H.A., M.A. Al-Anazi, A. Balto, R. Proctor, R.M. Saleh:

"Challenging Wellbore Cleanouts with Coiled Tubing Made Easy with Computer Modeling Technology," SPE 100129 presented at the SPE/ICoTA Coiled Tubing & Well Intervention Conference & Exhibition held in April 4-5, 2006.

249. Nasr-El-Din, H.A., J.B. Chesson, K.E. Cawiezel, C.S. Devine: "Laboratory

Investigation and Field Evaluation of Foamed VES Diversion Applied During Coiled-Tubing Matrix-Acid Treatment," SPE 99651 presented at the SPE/ICoTA Coiled Tubing & Well Intervention Conference & Exhibition held in April 4-5, 2006.

250. Nasr-El-Din, H.A., M.B. Al-Otaibi, A.A. Al-Qahtani, O. Al-Fuwaris: "Filter

Cake Cleanup in MRC Wells Using Enzyme/Surfactant Solutions," SPE 98300 presented at the SPE International Symposium and Exhibition on Formation Damage Control held in Lafayette, LA, Feb. 15 - 17, 2006.

251. Nasr-El-Din, H.A., M.B. Al-Otaibi, A.A. Al-Qahtani, and I.D. McKay: “Lab

Studies and Field Application of In-Situ Generated Acid to Remove Filter Cake in Gas Wells,” SPE 96965 presented at SPE Annual Technical Conference and Exhibition, Dallas, TX, 9-12 October, 2005.

252. Al-Muntasheri, G.A., H.A. Nasr-El-Din, Mohamed B. Amin, Ibnelwaleed A.

Hussein: "Squeeze Flow of Polymeric Gels used in Water Shut-off Treatments," The 4th Pacific Rim Conference on Rheology, Shanghai, China, Aug. 7-11, 2005.

253. Al-Otaibi, M.B., H.A. Nasr-El-Din and Y.M. Altameimi: “Wellbore Cleanup

by Water Jetting and Enzyme Treatment in MRC Wells,” SPE 97427, presented at the SPE/IADC Middle East Drilling Technology held in Dubai, UAE, 12-14 September. 2005.

254. Al-Dhafeeri, A.M., H.A. Nasr-El-Din, R. Seright, and R.D. Sydansk: “High-

Permeability Carbonate Zones (Super-K) in Ghawar Field (Saudi Arabia): Identified, Characterized, and Treated by Gels,” SPE 97542 presented at the Intl. Improved Oil Recovery Conference, KL, Malaysia, December 5-6, 2005.

255. Samuel, M., H.A. Nasr-El-Din, M. Jemmali: “Field Application of a Novel

Viscoelastic Gelled Oil System for Sand Fill Cleanout Operations,” SPE 97545 presented at the Intl. Improved Oil Recovery Conference, KL, Malaysia, December 5-6, 2005.

256. Al-Muntasheri, G.A, H.A. Nasr-El-Din, J.A. Peters, P.L.J. Zitha:

“Investigation of a High Temperature Organic Water Shutoff Gel: Reaction

53

Mechanisms,” paper SPE 97530 presented at the SPE International Improved Oil Recovery Conference in Asia Pacific held in Kuala Lumpur, Malaysia, December 5–6, 2005.

257. Ulmran, M.I., K. Al-Dossari, H.A. Nasr-El-Din: “Successful Treatment to

Enhance the Performance of Horizontal Wells Drilling near Tar-Mat Areas,” IPTC 10188 presented at International Petroleum Technology Conference (IPTC), Doha, Qatar, November 21-23, 2005.

258. Al-Otaibi, M.B. and H.A. Nasr-El-Din: "Chemical Treatments for Removal

of Drill-in-Fluid Damage in Horizontal-Multilateral Gas Wells: Lab Studies and Case Histories," SPE 94043 presented at the Europec Biennial Conference held in Madrid, Spain, 13-16 June, 2005.

259. Al-Katheeri, M. and H.A. Nasr-El-Din: "Application of CE and CE-MS to

Assay Corrosion Inhibitors Used in Well Stimulation Treatments," SPE 95112, presented at the Oilfield Corrosion Symposium, Aberdeen, Scotland, May 13, 2005.

260. Nasr-El-Din, H.A.: “Scale Remediation: Field Cases and Lessons

Learned,” Keynote paper, presented at the Oilfield Scale Symposium, Aberdeen, Scotland, May 11-12, 2005.

261. Al-Mutairi, S.H., H.A. Nasr-El-Din, G.A. Al-Muntasheri, and S. Al-

Driweesh: "Corrosion Control during Acid Fracturing of Deep Gas Wells: Lab Studies and Field Cases," SPE 94639, presented at the Oilfield Corrosion Symposium, Aberdeen, Scotland, May 13, 2005.

262. Al-Mutairi, S.H. and H.A. Nasr-El-Din: "Tube Pickling Procedures: Case

Studies," SPE 95004 presented at the 6th SPE European Formation Damage Conference, Scheveningen, The Netherlands, May 25 - 27, 2005.

263. Al-Muntasheri, G.A., Ibnelwaleed A. Hussein, H.A. Nasr-El-Din, and

Mohamed B. Amin: “Viscoelastic Properties of an Organically X-linked Water Shutoff Polymeric Gel,” presented at Kuwait Oil and Gas Conference and Exhibition, Kuwait, March 7-9, 2005.

264. Nasr-El-Din, H.A., A.M. Al-Mohammad, M.A. Al-Hajri and J.B. Chesson:

“A New Chemical Treatment to Remove Multiple Damage in a Water Supply Well,” paper SPE 95001 presented at the 2005 SPE European Formation Damage Conference, Scheveningen, The Netherlands, May 25 – 27, 2005.

265. Mohammed, S.K., H.A. Nasr-El-Din and M.M. Erbil: ''Successful

Application of Foamed Viscoelastic Surfactant-Based Acid,'' SPE 95006 presented at the 6th SPE European Formation Damage Conference, Scheveningen, The Netherlands May 25 - 27, 2005.

54

266. Nasr-El-Din, H.A., I.H. Arnaout, J.B. Chesson and K. Cawiezel: “Novel

Technique for Improved CT Access and Stimulation in an Extended-Reach Well,” SPE 94044 presented at the SPE/ICoTA Coiled Tubing Conference and Exhibition held in The Woodlands, TX, 12 – 13 April, 2005.

267. Al-Mutairi, S.H., A.D. Hill and H.A. Nasr-El-Din: “Pickling Well Tubulars

Using Coiled Tubing: Mathematical Modeling and Field Application,” SPE 94124 presented at the SPE/ICoTA Coiled Tubing Conference and Exhibition held in The Woodlands, TX, 12 – 13 April 2005.

268. Chatriwala, S.A., Y. Rufaie, H.A. Nasr-El-Din, Y. Altameimi, and K.

Cawiezel: “A Case Study of a Successful Matrix Acid Stimulation Treatment in Horizontal Wells Using a New Diversion Surfactant in Saudi Arabia,” paper SPE 93536 presented at the SPE Middle East Oil & Gas Show and Conference held in Bahrain, 12-15 March, 2005.

269. Nasr-El-Din, H.A., N.S. Al-Habib, M. Al-Khamis; and M. Jemmali: “A

Novel Technique to Acidize Multilateral Open Hole ER Horizontal Wells Drilled in Carbonate Formations SPE 93500 presented at the SPE Middle East Oil & Gas Show and Conference held in Bahrain, 12-15 March, 2005.

270. Nasr-El-Din, H.A., N.S. Al-Habib, G.H. Zoraia, A.H. Nasser; A. Sunbul,

and M. Jemmali: “New Methodology to Effectively Stimulate Water Disposal Wells Drilled in Acid Sensitive Sandstone Formations in Saudi Arabia,” SPE 93502 presented at the SPE Middle East Oil & Gas Show and Conference held in Bahrain, 12-15 March, 2005.

271. Al-Mutairi, S.H., A.D. Hill and H.A. Nasr-El-Din: “Tube Pickling

Procedures: Mathematical Modeling and Case Studies,” SPE 93291 presented at the International Conference on Oilfield Chemistry, held in Woodlands, TX, 2-4 Feb, 2005.

272. Nasr-El-Din, H.A., M. Al-Otaibi, A. Al-Aamri, and N. Ginest: “Surface

Tension of Completion Fluids,” SPE 93421 presented at the International Conference on Oilfield Chemistry, held in Woodlands, TX, 2-4 Feb., 2005.

55

273. Nasr-El-Din, H.A., N.S. Al-Habib, A.A. Al-Mumen, M. Jemmali and M. Samuel: “A Novel Technique to Acidize Horizontal Wells with Extended Reach,” SPE 90385 presented at the SPE Annual Technical Conference and Exhibition held in Houston, TX, 26-29 September, 2004.

274. Nasr-El-Din, H.A., R. Tibbiles, and M. Samuel: "Lessons Learned from

Using Viscoelastic Surfactants in Well Stimulation," SPE 90383 presented at the SPE Annual Technical Conference and Exhibition held in Houston, TX, 26-29 September, 2004.

275. Nasr-El-Din, H.A., A. Al-Mohammed, A.A. Al-Shurei, N.K. Merwat, M.M.

Erbil and M. Samuel: “Matrix Stimulation of Water Disposal Wells Using a Viscoelastic Surfactant-Based Acid,” SPE 88588 presented at the SPE Asia Pacific Oil and Gas Conference and Exhibition (APOGCE) held in Perth, Australia, 18-20 October, 2004.

276. Nasr-El-Din, H.A., M.B. Al-Otaibi and M. Samuel: “An Effective Fluid

Formulation to Remove Drilling Fluid Mud Cake in Horizontal and Multi-lateral Wells,” SPE 87690 presented at the IADC/SPE Asia Pacific Drilling Technology and Conference, Kuala Lumpur, Malaysia, Sept. 13-15, 2004.

277. Siddiqui, M.A., H.A. Nasr-El-Din, M.S. Al-Anazi and K.M. Bartko:

“Formation Damage in Gas Sandstone Formations by High-temperature Borate Gels Due to Long Term Shut-in Periods,” SPE 89476 presented at the SPE/DOE Symposium on Improved Oil Recovery held in Tulsa, OK, 17–21 April, 2004.

278. Al-Otaibi, M.B., H.A. Nasr-El-Din and M.A. Siddiqui: “Chemical

Treatments to Enhance Productivity of Horizontal and Multilateral Wells: Lab Studies and Case Histories,” SPE 89467 presented at the SPE/DOE Symposium on Improved Oil Recovery held in Tulsa, OK, 17–21 April 2004.

279. Al-Ghamdi, A.H., H.A. Nasr-El-Din, A.A. Al-Qahtani and M.M. Samuel:

“Impact of Acid Additives on the Rheological Properties of Viscoelastic Surfactants and Their Influence on Field Application,” SPE 89418 presented at the SPE/DOE Symposium on Improved Oil Recovery held in Tulsa, OK, 17–21 April 2004.

280. Taylor, K.C., H.A. Nasr-El-Din and S. Mehta: “Anomalous Acid Reaction

Rates in Carbonate Reservoir Rocks,” SPE 89417 presented at the SPE/DOE Symposium on Improved Oil Recovery held in Tulsa, OK, 17–21 April 2004.

281. Nasr-El-Din, H.A., H.A. Al-Saiari, H.H., Al-Hajji, M. Samy, M. Garcia, W.

Frenier, and M. Samuel: “A Single-Stage Acid Treatment to Remove and Mitigate Calcium Carbonate Scale in Sandstone and Carbonate Reservoirs,” SPE 87454 presented at the SPE Oilfield Scale Conference held in Aberdeen, Scotland, 26-27 May, 2004.

56

282. Nasr-El-Din, H.A., K.U. Raju, V.V. Hilab, O.J. Esmail: “Injection of

Incompatible Water as a Means of Water Shut-off,” SPE 87455 presented at the SPE Oilfield Scale Conference held in Aberdeen, Scotland, 26-27 May, 2004.

283. Nasr-El-Din, H.A. and A.S. Metcalf: “Workovers in Sour Environments:

How Do We Avoid Coiled Tubing Failures,” SPE 87622 presented at the 1st SPE Corrosion Conference held in Aberdeen, Scotland, 28 May 2004.

284. Raju, K.U., H.A. Nasr-El-Din, V. Hilab, S. Siddiqui, and S. Mehta: “A Case

Study of Incompatibility of Disposal land Aquifer Waters: Iron Sulfide,” SPE 87440 presented at the SPE Oilfield Scale Conference held in Aberdeen, Scotland, 26-27 May, 2004.

285. Al-Saiari, H.A, H.A. Nasr-El-Din, J.D. Lynn, M.K. Hashem and G. Bitar:

“Field Application of an Emulsified Scale Inhibitor System to Mitigate Calcium Carbonate Scale in a Sandstone Reservoir in Saudi Arabia: Field Monitoring and the Impact of Descaling Treatment,” NACE paper 04385 presented at the NACExpo, Houston, TX, March 28 - April 1, 2004.

286. Raju, K. and H.A. Nasr-El-Din: “Calcium Sulfate Scale: Field Tests and

Model Predictions,” NACE paper 04397 presented at the NACExpo, Houston, TX, March 28- April 1, 2004.

287. Otaibi, M.B., M. Siddiqui, and H.A. Nasr-El-Din: “Wellbore Cleanup by

Water Jetting and Specific Enzyme Treatments in Multilateral Wells: A Case Study,” IADC/SPE 87206 presented at the IADC/SPE Drilling Conference, Houston, TX, March 2-4, 2004.

288. Nasr-El-Din, H.A., S.H. Al-Mutairi, J.D. Lynn and H.H. Al-Hajji:

“Evaluation of a New Barite Dissolver – Laboratory Studies,” SPE 86501 presented at the SPE Formation Damage Control Conference, Lafayette, LA, Feb. 18-20, 2004.

289. Nasr-El-Din, H.A., N.S. Al-Habib, A.A. Al-Mumen, M. Jemmali and M.

Samuel: “A New Effective Stimulation Treatment for Long Horizontal Wells Drilled in Carbonate Reservoirs,” SPE 86516 presented at the SPE Formation Damage Control Conference, Lafayette, LA, Feb. 18-20, 2004.

290. Nasr-El-Din, H.A., S.M. Al-Driweesh, G.A. Al-Muntasheri: “Field

Application of HCl-Formic Acid System to Acid Fracture Deep Gas Wells Completed with Super Cr-13 Tubing in Saudi Arabia,” SPE 84925 presented at SPE International Improved Oil Recovery Conference held in Kuala Lumpur, Malaysia, 20-21 October 2003.

57

291. Nasr-El-Din, H.A., E. Samuel, and M. Samuel “Application of a New Class of Surfactants in Well Stimulation Treatments,” SPE 84898 presented at SPE International Improved Oil Recovery Conference held in Kuala Lumpur, Malaysia, 20-21 October, 2003.

292. Bartko, K., H.A. Nasr-El-Din, Z. Rahim, and G. Al-Muntasheri: “Acid

Fracturing of a Carbonate Gas Reservoir: The Impact of Acid Type and Lithology on Fracture Half Length and Width,” SPE 84130 presented at the SPE Annual Conference and Exhibition, Denver, CO, 5 - 8 October, 2003.

293. Nasr-El-Din, H.A., S. Al-Driweesh, G. Al-Muntasheri, R. Marcinew, M.

Samuel: “Acid Fracturing of High-Temperature/High Pressure Gas Wells Using a Novel Surfactant-Based Fluid System,” SPE 84516 presented at the SPE Annual Conference and Exhibition, Denver, CO, 5 - 8 October, 2003.

294. Lynn, J.D. and H.A. Nasr-El-Din: “A Novel Low-Temperature, Forced

Precipitation Phosphonate Squeeze for Water Sensitive, Non-Carbonate Bearing Formations,” SPE 84404 presented at the SPE Annual Conference and Exhibition, Denver, CO, 5 - 8 October, 2003.

295. Taylor, K.C., A.H. Al-Ghamdi, and H.A. Nasr-El-Din: “Effect of Rock Type

and Acidizing Additives on Acid Reaction Rates Using the Rotating Disk Instrument,” CIM2003/068 presented at the Petroleum Society’s Canadian International Petroleum Conference, Calgary, Alberta, Canada, June 11 – 13, 2003.

296. Nasr-El-Din, H.A., S.A. Metcalf, and H.B. Luft: “Sour Environments:

Protecting Production and Equipment,” CIM2003/025 presented at the Petroleum Society’s Canadian International Petroleum Conference, Calgary, Alberta, Canada, June 11 – 13, 2003.

297. Raju, K., H.A. Nasr-El-Din, and T.A. Al-Shafai: “A Feasibility Study of

Mixing Disposal Water with Aquifer Water for Downhole Injection,” SPE 81449 presented at 13th Middle East Oil Show & Conference held in Bahrain, June 9-12, 2003.

298. Siddiqui, M.A. and H.A. Nasr-El-Din: “Evaluation of Special Enzymes as a

Means to Remove Formation Damage Induced by Drill-in Fluids in Horizontal Gas Wells in Tight Reservoirs,” SPE 81455 presented at 13th Middle East Oil Show & Conference held in Bahrain, June 9-12, 2003.

299. Samuel, M., R. Marcinew, M. Al-Harbi, E. Samuel, Z. Xiao, A.M. Ezzat,

S.A. Khamees, C. Jarrett, N.H. Ginest, K. Bartko, D. Hembling and H.A. Nasr-El-Din: “A New Solids-Free High Temperature Lost-Circulation Pill: Development and First Field Applications,” SPE 81494 presented at 13th Middle East Oil Show & Conference held in Bahrain, June 9-12, 2003.

58

300. Lewis, D.R., K.A. Zainalabedin, N.S. Al-Habib, T.M. Al-Beaiji, A.M. Al-

Qahtani, H.A. Nasr-El-Din: “Scale Mitigation Enhances Safety and Production,” SPE 81569 presented at 13th Middle East Oil Show & Conference held in Bahrain, 9-12 June, 2003.

301. Muhareb, M., H.A. Nasr-El-Din, R. Marcinew, and M. Samuel: “Acid

Fracturing of Power Water Injectors - A New Field Application Using Polymer-free Fluids,” SPE 82210 presented at the SPE European Formation Damage Conference held in The Hague, The Netherlands, 13-14 May, 2003.

302. Al-Khaldi, M., H.A. Nasr-El-Din, M. Blauch, G. Funkhouser: “New

Findings on Damage Potential, Geochemical Reaction Mechanisms and Production Enhancement Applications for Citric Acid,” SPE 82218 presented at the SPE European Formation Damage Conference held in The Hague, The Netherlands 13-14 May, 2003.

303. Nasr-El-Din, H.A.: “New Mechanisms of Formation Damage: Lab Studies

and Case Histories,” SPE 82253 presented at the SPE European Formation Damage Conference held in The Hague, The Netherlands 13-14 May, 2003.

304. Thomas, R.L. and H.A. Nasr-El-Din: “Field Validation of a Carbonate

Matrix Acidizing Model: A Case Study of Seawater Injection Wells Completed in Saudi Arabia,” SPE 82271 presented at the SPE European Formation Damage Conference held in The Hague, The Netherlands 13-14 May, 2003.

305. Taylor, K.C., A. Al-Ghamdi, H.A. Nasr-El-Din: “Effect of Rock Type and

Acidizing Additives on Acid Reaction Rates Using the Rotating Disk Instrument,” SPE 80256 presented at the SPE International Symposium on Oilfield Chemistry, Houston, TX, February 5-7, 2003.

306. Nasr-El-Din, H.A., A. Al-Othman, K.C. Taylor, A. Al-Ghamdi, “Surface

Tension of Acid Stimulating Fluids at High Temperature and Pressure”, SPE 80288 presented at the SPE International Symposium on Oilfield Chemistry, Houston, TX, February 5-7, 2003.

307. Nasr-El-Din, H.A., O. Al-Madhi, A. Al-Zahrani: “Evaluation of Phosphonic

Acids as Iron Control Agents”, SPE 80223 presented at the SPE International Symposium on Oilfield Chemistry Houston, TX, February 5-7, 2003.

308. Nasr-El-Din, H.A., H.A. Saiyari, Hashem, M.K., and Bitar, G.:

“Optimization of a Novel Emulsified Scale Inhibitor System to Mitigate Calcium Carbonate Scale in a Sandstone Reservoir in Saudi Arabia,” SPE 80389 presented at the SPE Oilfield Scale, Aberdeen, Scotland, 29-30 January, 2003.

59

309. Al-Qahtani, A.M., H.A. Nasr-El-Din, K. Raju, “Scale Inhibitor Squeeze Treatment in a Tight Carbonate Reservoir – Problems and Solutions,” SPE 80389 presented at the SPE Oilfield Scale, Aberdeen, Scotland, 29-30 January, 2003.

310. Nasr-El-Din, H.A., Al-Khuraidah, A., Krizler, T. and Cassidy, J.: “Recent

Development In High-temperature Acidizing with Super Cr-13 Completions: Laboratory Testing,” paper SPE 78557 presented at the SPE/ADIPEC Conference, held in Abu Dhabi, UAE, October 13-16, 2002.

311. Mohammed, S.K., H.A. Nasr-El-Din, K. Al-Dossary, M. Samuel, and K.

McClelland: “Enhancement of Stimulation Treatment of Water Injection Wells Using a New Polymer Free Diversion System,” paper SPE 78588 presented at the SPE/ADIPEC Conference, held in Abu Dhabi, UAE, October 13-16, 2002.

312. Thomas, R., H.A. Nasr-El-Din, J.D. Lynn, S. Mehta, “The Impact of HCl to

HF Ratio on Hydrated Silica Formation During the Acidizing of a High-Temperature Sandstone Reservoir in Saudi Arabia,” SPE 77370 presented at the SPE Annual Meeting, San Antonio, TX, 29 September – 2 October, 2002.

313. Kokal, S.L., A.M. Al-Ghamdi, N. Dawood, H.A. Nasr-El-Din, J. Fontanilla,

and Y. Rufaie: “Productivity Decline in Oil Wells Related to Asphaltene precipitation and Emulsion Block,” SPE 77767 presented at the SPE Annual Meeting, San Antonio, TX, 29 September – 2 October, 2002.

314. Nasr-El-Din, H.A., J.D. Lynn, M.K. Hashem, and G. Bitar: “Field

Application of a Novel Emulsified Scale Inhibitor System to Mitigate Calcium Carbonate Scale in a Low-Temperature, Low-Pressure Sandstone reservoir in Saudi Arabia,” SPE 77768 presented at the SPE Annual Meeting, San Antonio, TX, 29 September – 2 October, 2002.

315. Lynn, J.D. and H.A. Nasr-El-Din: “Application of Lab Techniques to

Assess Water Quality Standards: Review of Water Quality Standards for a Saudi Arabian Carbonate Reservoir to Aid in the Diagnosis of Injectivity Decline Noted in Some Injectors,” SPE 77413 presented at the SPE Annual Meeting, San Antonio, TX, 29 September – 2 October, 2002.

316. Abass, H.H., H.A. Nasr-El-Din, and M. Bataweel: “Sand Control: Sand

Characterization, Failure Mechanisms, and Completion Methods,” paper 77686 presented at the SPE Annual Meeting, San Antonio, TX, 29 September – 2 October, 2002.

317. Nasr-El-Din, H.A., S.H. Al-Mutairi, M. Al-Malki, S. Metcalf, and W.

Wallace: “Stimulation of Deep Gas Wells Using HCl/Formic Acid System: Lab Studies and Field Application,” CIM2002/289 presented at the Petroleum

60

Society’s Canadian International Petroleum Conference, Calgary, Alberta, Canada, June 11 – 13, 2002.

318. Nasr-El-Din, H.A., S.H. Al-Mutairi, M. Al-Jari, S. Metcalf, and W. Wallace:

“Stimulation of a Deep Sour Gas Reservoir Using Gelled Acid,” paper SPE 75501 presented at the SPE Gas Technology Symposium held in Calgary, AB, Canada, 30 April to 02 May, 2002.

319. Nasr-El-Din, H.A., M. Al-Khaldi, M.A. BaTaweel, and F. Al-Beheiri:

“Evaluation of Wellbore Gels: Lab and Field Studies,” paper SPE 75124 presented at the SPE/DOE Thirteenth Symposium on Improved Oil Recovery held in Tulsa, Oklahoma, 13–17 April, 2002.

320. Nasr-El-Din, H.A., K.C. Taylor, and H.H. Al-Hajji: “Propagation of Cross-

linkers Used in In-Situ Gelled Acids in Carbonate Reservoirs,” paper SPE 75257 presented at the SPE/DOE Thirteenth Symposium on Improved Oil Recovery held in Tulsa, Oklahoma, 13–17 April, 2002.

321. Al-Dhafeeri, A.M., T.W. Engler, H.A. Nasr-El-Din: “Application of Two

Methods to Evaluate Matrix Acidizing Using Real Time Skin Effect in Saudi Arabia,” paper SPE 73703 presented at the SPE Int. Symposium on Formation Damage Control, Lafayette, LA, February 20-21, 2002.

322. Lynn, J.D., H.A. Nasr-El-Din, and M.K. Hashem: “Iron Phosphonate

Stabilized Emulsions: Formation Damage during an Adsorption Squeeze Treatment for Scale Mitigation,” paper SPE 73718 presented at the SPE Int. Symposium on Formation Damage Control, Lafayette, LA, February 20-21, 2002.

323. Nasr-El-Din, H.A., J.D. Lynn and K.A. Al-Dossary: “Formation Damage

Caused by a Water Blockage Chemical: Prevention Through Operator Supported Test Programs,” paper SPE 73790 presented at the SPE Int. Symposium on Formation Damage Control, Lafayette, LA, February 20-21, 2002.

324. Nasr-El-Din, H.A., M.N. Al-Dahlan, A. As-Sadlan, H. Al-Zamil: “Iron

Precipitation During Acid Treatments Using HF-based Acids,” SPE 73747 presented at the SPE Int. Symposium on Formation Damage Control, Lafayette, LA, February 20-21, 2002.

325. Nasr-El-Din, H.A., S.H. Al-Mutairi, and S.M. Al-Driweesh: “Lessons

Learned from Acid Pickle Treatments of Deep/Sour Gas Wells,” SPE 73706 presented at the SPE Int. Symposium on Formation Damage Control, Lafayette, LA, February 20-21, 2002.

326. Al-Katheeri, M.I., H.A. Nasr-El-Din, K.C. Taylor, and A.H. Al-Grainees,

“Determination and Fate of Formic Acid in High Temperature Acid Stimulation

61

Fluids,” SPE 73749 presented at the SPE Int. Symposium on Formation Damage Control, Lafayette, LA, February 20-21, 2002.

327. Taylor, K.C. and H.A. Nasr-El-Din: “Coreflood Evaluation of In-situ Gelled

Acids,” SPE 73707 presented at the SPE Int. Symposium on Formation Damage Control, Lafayette, LA, February 20-21, 2002.

328. Thomas, R.T., H.A. Nasr-El-Din, J.D. Lynn, S. Mehta, M. Muhareb, N.

Ginest, “Channel versus Matrix Sandstone Acidizing of an HT/HP Reservoir in Saudi Arabia,” SPE 73702 presented at the SPE Int. Symposium on Formation Damage Control, Lafayette, LA, February 20-21, 2002.

329. Nasr-El-Din, H.A., J.D. Lynn, M.K. Hashem, G. Bitar, and A. Al-Ali:

“Lessons Learned from Descaling Wells in a Sandstone Reservoir in Central Saudi Arabia,” paper SPE 74690 presented at the SPE Symposium on Oilfield Scale held in Aberdeen, Scotland, 30-31 January, 2002.

330. Nasr-El-Din, H.A., J.D. Lynn, G.A. Al-Muntasheri, and S.K. Mohamed: “A

Scale Squeeze Treatment To Mitigate Iron Sulfide Scale: Lab and Field Studies,” paper SPE 74660 paper presented at the SPE Symposium on Oilfield Scale held in Aberdeen, Scotland, 30-31 January, 2002.

331. Taylor, K.C. and H.A. Nasr-El-Din: “Laboratory Evaluation of In-Situ

Gelled Acids for Carbonate Reservoirs”, SPE 71694 presented at the SPE Annual Technical Meeting, New Orleans, LA, 30 September – 3 October, 2001.

332. Thomas, R.T., H.A. Nasr-El-Din, J.D. Lynn, S. Mehta, “Precipitation

During the Acidizing of a HPHT Illitic Sandstone Reservoir in Saudi Arabia”, SPE 71690 presented at the SPE Annual Technical Meeting, New Orleans, LA, 30 September – 3 October, 2001.

333. Nasr-El-Din, H.A., J.R. Solares, and M.D. Mahoney,” Field Application of

Emulsified Acid-Based System to Stimulate Deep Sour Gas Reservoirs in Saudi Arabia”, SPE 71693 presented at the SPE Annual Technical Meeting, New Orleans, LA, 30 September – 3 October, 2001.

334. Nasr-El-Din, H.A., and A. Al-Humaidan, “Iron Sulfide Scale; Formation,

Removal and Mitigation”, SPE 68315 presented at the SPE Oilfield Scale, Aberdeen, UK, January 29-30, 2001.

335. Okasha, T.M., H.A. Nasr-El-Din, W.S. Al-Khudair, “Abatement of Water

Production from Upper Permian Gas Wells in Saudi Arabia Using a New Polymer treatment,” SPE 68152 presented at the Middle East Oil Show held in Bahrain, 17-20 March, 2001.

62

336. Nasr-El-Din, H.A., A. Al-Zahrani, H. Al-Hajji, S. Kelkar, and D. Hill, “Emulsified Acid System for High Temperature Applications”, SPE 65397 presented at the SPE Oilfield Chemistry, Houston, TX, February 13-16, 2001.

337. Al-Qam, M.H., H.A. Nasr-El-Din, and J.D. Lynn, “Treatment of Super-K

Zones Using Gelling Polymers”, SPE 64989 presented at the SPE Oilfield Chemistry, Houston, TX, February 13-16, 2001.

338. Lynn, J.D. and H.A. Nasr-El-Din, “A Core-Based Comparison of the

Reaction Characteristics of Emulsified and In-Situ Gelled Acids in Low-Permeability, High Temperature, Gas Bearing Carbonates“, SPE 65386 presented at the SPE Oilfield Chemistry, Houston, TX, February 13-16, 2001.

339. Nasr-El-Din, H.A., A. Al-Humaidan, S.K. Mohamed and A. Salman, “Iron

Sulfide Scale Formation in Water Supply Wells with Gas Lift”, SPE 65028 presented at the SPE Oilfield Chemistry, Houston, TX, February 13-16, 2001.

340. Nasr-El-Din, H.A., B.A. Fadel, S.K. Mohammed, “Laboratory Evaluation of

Biosealers”, SPE 65017 presented at the SPE Oilfield Chemistry, Houston, TX, February 13-16, 2001.

341. Nasr-El-Din, H.A. “Application of an Emulsified Acid System to Stimulate

Sour Wells: Case Studies”, SPE 65013 presented at the SPE Oilfield Chemistry, Houston, TX, February 13-16, 2001.

342. Nasr-El-Din, H.A., J.D. Lynn and K.C. Taylor, “Lab testing and Field

Application of a Large Scale Acetic Acid Based Treatment in a Newly Developed Carbonate Reservoir”, SPE 65036 presented at the SPE Oilfield Chemistry, Houston, TX, February 13-16, 2001.

343. Al-Dahlan, M.N., H.A. Nasr-El-Din, and A. Al-Qahtani, “Evaluation of

Retarded HF Systems”, SPE 65032 presented at the SPE Oilfield Chemistry, Houston, TX, February 13-16, 2001.

344. Taylor, K.C. and H.A. Nasr-El-Din, “Laboratory Evaluation of Iron-Control

Chemicals for High-Temperature Sour-Gas Wells”, SPE 65010 presented at the SPE Oilfield Chemistry, Houston, TX, February 13-16, 2001.

345. Lynn, J.D., H.A. Nasr-El-Din, A. Bahamdan, “Achieving Maximum

Horizontal Well Performance with Mild Acid Stimulation,” SPE 65034 presented at the SPE Oilfield Chemistry, Houston, TX, February 13-16, 2001.

346. Al-Anazi, H.A., H.A. Nasr-El-Din, M.K. Hashem and J.A. Hopkins, “Matrix

Acidizing of Water Injectors in a Sandstone Field in Saudi Arabia: A Case Study”, SPE 62825 presented at the SPE/AAPG Western Regional Meeting held in Long Beach, CA, June 19-23, 2000.

63

347. Nasr-El-Din, H.A., A. Al-Humaidan, B.A. Fadel, W. Frenier, D. Hill, “An

Experimental Study of Removing Iron Sulfide Scale from Well Tubulars”, SPE 60205 presented at the SPE Oilfield Scale, Aberdeen, UK, January 26-27, 2000.

348. Nasr-El-Din, H.A., A. Al-Humaidan, B.A. Fadel, and R. Saleh, “Effect of

Acid Additives on the Efficiency of Dissolving Iron Sulfide Scale”, NACE # 439 presented at the NACExpo 2000, Orlando, FL, March 26-31, 2000.

349. Al-Shalaan, T. and H.A. Nasr-El-Din, “Mathematical Modeling of

Sandstone Stimulation: A Critical Review of Available Models”, NACE # 443 presented at the NACExpo 2000, Orlando, FL, March 26-31, 2000.

350. Al-Dahlan, M.N. and H.A. Nasr-El-Din, “A New Technique to Evaluate

Matrix Treatment in Carbonate Reservoirs”, SPE 58714 presented at the SPE Int. Symposium on Formation Damage Control, Lafayette, LA, USA, February 23-24, 2000.

351. Taylor, K.C. and H.A. Nasr-El-Din, “Flowback Analysis of Acid

Stimulation of Seawater Injection Wells: Case Histories”, SPE 58736 presented at the SPE Int. Symposium on Formation Damage Control, Lafayette, LA, USA, February 23-24, 2000.

352. Taylor, K.C., M. Al-Katheeri, H.A. Nasr-El-Din and I. Ahmed, “Application

of a New Measurement Technique for Organic Acid Additives in Stimulation Fluids”. SPE 58801 presented at the SPE Int. Symposium on Formation Damage Control, Lafayette, LA, USA, February 23-24, 2000.

353. Nasr-El-Din, H.A., A. Al-Humaidan, B. Fadel, W. Frenier, D. Hill,

“Investigation of Sulfide Scavengers in Well Acidizing Fluids”, SPE 58712 presented at the SPE Int. Symposium on Formation Damage Control, Lafayette, LA, USA, February 23-24, 2000.

354. Nasr-El-Din, H.A., H.R. Rosser and M. Al-Jawfi, “Formation Damage

Resulting from Biocide/corrosion Squeeze Treatments”, SPE 58803 presented at the SPE Int. Symposium on Formation Damage Control, Lafayette, LA, USA, February 23-24, 2000.

355. Mohamed, S.K., H.A. Nasr-El-Din, and Y.A. Al-Furaidan, “Acid

Stimulation of Power Water Injectors and Saltwater Disposal Wells in a Carbonate Reservoir in Saudi Arabia: Laboratory Testing and Field Results”, SPE 56533, presented at the SPE Annual Technical Meeting, Houston, TX, Oct. 3-6, 1999.

356. Hashem, M.K., H.A. Nasr-El-Din, and J.A. Hopkins, “An Experience in

Acidizing Sandstone Reservoirs: A Scientific Approach”, SPE 56528, presented

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at the SPE Annual Technical Meeting, Houston, TX, Oct. 3-6, 1999.

357. Lynn, J.D. and H.A. Nasr-El-Din, "Formation Damage Associated with Water-Based Drilling Fluids and Emulsified Acid Study”, SPE # 54718, presented at the European Formation Damage Conference, The Hague, The Netherlands, May 31-June 1, 1999.

358. Nasr-El-Din, H.A., H.A. Al-Anazi and S.K. Mohamed, “Stimulation of

Water Disposal Wells Using Acid-in-Diesel Emulsions - Field Application”, SPE 50739, presented at the SPE Oilfield Chemistry, Houston, TX, February 16-19, 1999.

359. Taylor, K.C. and H.A. Nasr-El-Din, “A Systematic Study of Iron Control

Chemicals Used During Well Stimulation - Part II”, SPE 50722, presented SPE Oilfield Chemistry, Houston, TX, February 16-19, 1999.

360. Taylor, K.C., H.A. Nasr-El-Din and M. Al-Alawi, “Field Test Measures

Amount and Type of Iron in Spent Acids”, SPE 50780, presented SPE Oilfield Chemistry, Houston, TX, February 16-19, 1999.

361. Al-Humaidan, A.Y. and H.A. Nasr-El-Din, "Optimization of Hydrogen

Sulfide Scavengers Used during Well Stimulation", SPE 50765, presented at the SPE Oilfield Chemistry, Houston, TX, February 16-19, 1999.

362. Rosser, H.H., H.A. Nasr-El-Din, N. Al-Shamri, A. Al-Dhafeeri,

"Propagation of Biocides in a Sandstone Reservoir in Saudi Arabia", SPE 50740, presented at the SPE Oilfield Chemistry, Houston, TX, February 16-19, 1999.

363. Dabbousi, B., H.A. Nasr-El-Din, and Al-Muhaish, A., "Surface Tension of

Stimulation Fluids", SPE 50732, presented at the SPE Oilfield Chemistry, Houston, TX, February 16-19, 1999.

364. Al-Taq, A., H.A. Nasr-El-Din and A. Sunbul," Quality Requirements of

Waste Water and Restoring the Injectivity of Disposal Wells”, presented at the Middle East PETROTECH 98, Manama, Bahrain, September 14-16, 1998.

365. Nasr-El-Din, H.A., G. Bitar, F.I. Bou-Kamsin, A. Al-Mulhem, and J. Hsu,

“Field Application of Gelling Polymers in Saudi Arabia”, SPE 39615, presented at the SPE/DOE Improved Oil Recovery Symposium, Tulsa, OK, USA, April 19-22, 1998.

366. Al-Anazi, H.A. and H.A. Nasr-El-Din, "Optimization of Borate-Based Gels

Used for Wellbore Diversion During Well Stimulation-Case Studies”, SPE 39699, presented at the SPE/DOE Improved Oil Recovery Symposium, Tulsa, OK, USA, April 19-22, 1998.

65

367. Nasr-El-Din, H.A., A. Al-Mulhem and J.D. Lynn, “Evaluation of Clay Stabilizers for Sandstone Field in Central Saudi Arabia”, SPE 39584, presented at the SPE Int. Symposium on Formation Damage Control, Lafayette, LA, USA, February 18-19, 1998.

368. Nasr-El-Din, H.A., J.H. Hopkins, C.E. Shuchart and T. Wilkinson

“Aluminum Scaling and Formation Damage due to Regular Mud Acid Treatment”, SPE 39483, presented at the SPE Int. Symposium on Formation Damage Control, Lafayette, LA, USA, February 18-19, 1998.

369. Nasr-El-Din, H.A. and A.A. Al-Taq, “Water Quality Requirements and

Restoring the Injectivity of Water Disposal Wells”, SPE 39487, presented at the SPE Int. Symposium on Formation Damage Control, Lafayette, LA, USA, February 18-19, 1998.

370. Taylor, K.C., H.A. Nasr-El-Din and M. Al-Alawi, “A Systematic Study of

Iron Control Chemicals Used during Well Stimulation”, SPE 39419, presented at the SPE Int. Symposium on Formation Damage Control, Lafayette, LA, USA, February 18-19, 1998.

371. Al-Anazi, H.A., H.A. Nasr-El-Din and S.K. Mohamed, “Stimulation of Tight

Carbonate Reservoirs Using Acid-in-Diesel Emulsions - Field Application”, SPE 39418, presented at the SPE Int. Symposium on Formation Damage Control, Lafayette, LA, USA, February 18-19, 1998.

372. Carrigan, W.J., H.A. Nasr-El-Din, S. Al-Sharidi and I. Clark, "Geochemical

Characterization of Injected and Produced Water from Paleozoic Oil Reservoirs", SPE 37270, presented at the SPE Int. Symposium on Oilfield Chemistry, Houston, TX, USA, February 18-21, 1997.

373. Nasr-El-Din, H.A., H.A. Al-Anazi and J.A. Hopkins "Acid/rock Interactions

During Stimulation of Sour Water Injectors in a Sandstone Reservoir", SPE 37215, presented at the SPE Int. Symposium on Oilfield Chemistry, Houston, TX, USA, February 18-21, 1997.

374. Nasr-El-Din, H.A., H.R. Rosser and J.A. Hopkins, ”Stimulation of Injection

Water Supply Wells in Central Arabia, SPE 36181, presented at the 7th ADIPEC, Abu Dhabi, Oct. 13-16, 1996.

375. Nasr-El-Din, H.A. and A. Al-Bujairi, "Effect of Acids and Stimulation

Additives on the Cloud Point of Nonionic Surfactants", SPE 31106, presented at the SPE Int. Symposium on Formation Damage Control, Lafayette, LA, USA, February 14-15, 1996.

376. Nasr-El-Din, H.A., "The Role of Surfactants in Enhanced Oil Recovery",

Invited Paper, presented in the Int. Symp. Micelles, Microemulsions and

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Monolayers, Center of Surface Science and Engineering, University of Florida, August 28-30, 1995.

377. Al-Bujairi, A. and H.A. Nasr-El-Din, “Effect of Oilfield Chemicals on the

Cloud Point of Nonionic Surfactants", presented in the Int. Symp. Micelles, Microemulsions and Monolayers, Center of Surface Science and Engineering, University of Florida, August 28-30, 1995.

378. Taylor, K. and H.A. Nasr-El-Din, "Water-Soluble Hydrophobically

Associating Polymers for Improved Oil Recovery - A Literature Review", SPE 29008, presented at the SPE Int. Symposium on Oilfield Chemistry, San Antonio, TX, USA, February 14-17, 1995.

379. Taylor, K., R.A. Burk, H.A. Nasr-El-Din and L.L. Schramm, "Development

of a Flow Injection Analysis for the Determination of Acrylamide Copolymers in Oilfield Brines", SPE 29009, presented at the SPE Int. Symposium on Oilfield Chemistry, San Antonio, TX, USA, February 14-17, 1995.

380. Kokal, S.L., H.A. Nasr-El-Din, M. Pillai and M. Al-Eid,” Chemical

Enhanced Oil Recovery Technology for Cleaning Subsurface Oil Spills: A Laboratory Study”, 1st Specialty Conf. on Environmental Issues in Petroleum and Petrochemical Industries, SAS-A&MA and BSE, Manama, Bahrain, Dec. 4-6, 1995.

381. Nasr-El-Din, H.A., D. Shriemer and A. Abd-El-Aziz, "Liquid Crystal

Formation and its Effect on the Flow Properties of an Anionic Surfactant", presented at the 85th AOCS Meeting & Expo, Atlanta, GA, USA, May 8-12, 1994.

382. Nasr-El-Din, H.A., "The Role of the Synthetic Surfactant in the

Alkali/Surfactant/Polymer Process", presented at the 85th AOCS Meeting & Expo, Atlanta, GA, USA, May 8-12, 1994.

383. Kwok, W., R.E. Hayes and H.A. Nasr-El-Din, "Dynamic Adsorption of

Surfactants on Sandstone Cores with Radial Geometry", presented at the 43th Can. Chem. Eng. Conf., Ottawa, Ontario, Canada, October 3-6, 1993.

384. Hayes, R.E., A. Afacan and H.A. Nasr-El-Din, “Numerical Studies of

Anisokinetic Sampling from Fluid-Solids Systems”, presented at the 42nd Can. Chem. Eng. Conf., Toronto, Ontario, Canada, October 18-21, 1992.

385. Masliyah, J.H., A. Afacan, Wong, A.K.M. and H.A. Nasr-El-Din, “Flow of

Slightly settling slurries in a Horizontal Rotary Drum”, presented at the 42nd Can. Chem. Eng. Conf., Toronto, Ontario, Canada, October 18-21, 1992.

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386. Kwok, W., R.E. Hayes and H.A. Nasr-El-Din, "Dispersion in Consolidated Sandstone Cores with Radial Flow", presented at the 42th Can. Chem. Eng. Conf., Toronto, Ontario, Canada, October 18-21, 1992.

387. MacTaggart, R.S., H.A. Nasr-El-Din, J.H. Masliyah, "Measurements of

Solids Concentration in a Slurry Mixing Tank", presented at the 41st Can. Chem. Eng. Conf., Vancouver, British Columbia, Canada, October 3-6, 1991.

388. Kwok, W., H.A. Nasr-El-Din and R.E. Hayes, "Propagation of Surfactants

in Radial Sandstone Cores", presented at the 41st Can. Chem. Eng. Conf., Vancouver, British Columbia, Canada, October 3-6, 1991.

389. Nasr-El-Din, H.A. , B.F. Hawkins and K.A. Green, "Recovery of Residual

Oil Using the Alkali/Surfactant/Polymer Process: Effect of Alkali Concentration", presented at the 41st Can. Chem. Eng. Conf., Vancouver, British Columbia, Canada, October 3-6, 1991.

390. Foster, J., H.A. Nasr-El-Din and J.H. Masliyah, "Solids Distribution in

Slurry Flow in a Linear Manifold with a Horizontal Approach", presented at the 41st Can. Chem. Eng. Conf., Vancouver, British Columbia, Canada, October 3-6, 1991.

391. Nasr-El-Din, H.A., B. Maini and P. Stanislav, "Fines Migration in Oil

Sands", presented at the 5th UNITAR/UNDP Int. Conf. on Heavy Crudes and Tar Sands, Caracas, Venezuela, August 4-9, 1991.

392. Hawkins, B.F., K.C. Taylor and H.A. Nasr-El-Din, "Mechanisms of

Surfactant and Polymer Enhanced Alkaline Flooding: Application to the David Lloydminster and Wainwright Sparky Fields", CIM/AOSTRA 91-28, presented at the CIM/AOSTRA Conf., Banff, Alberta, Canada, April 21-24, 1991.

393. Kwok, W., H.A. Nasr-El-Din and R.E. Hayes, "Propagation of Anionic

Surfactants in Radial Sandstone Cores", CIM/AOSTRA 91-24, presented at the CIM/AOSTRA Conf., Banff, Alberta, Canada, April 21-24, 1991.

394. Nasr-El-Din, H.A., B.F. Hawkins and K.A. Green, "Viscosity Behavior of

Alkaline, Surfactant and Polyacrylamide Solutions Used for Enhanced Oil Recovery", SPE 21028, presented at the SPE Int. Symposium on Oilfield Chemistry, Anaheim, California, USA, February, 20-22, 1991.

395. Nasr-El-Din, H.A., A. Afacan and J.H. Masliyah, "Particle Collection from

Vertical Slurry Flow through a Side Port", presented at the 40th Can. Chem. Eng. Conf., Halifax, Nova Scotia, Canada, July 15-21, 1990.

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396. Afacan, A., H.A. Nasr-El-Din and J.H. Masliyah, "Slurry Transport in Horizontal Rotary Drums: Effect of Drum Internal Design", presented at the 40th Can. Chem. Eng. Conf., Halifax, Nova Scotia, Canada, July 15-21, 1990.

397. Nasr-El-Din, H.A., K. Taylor and B.F. Hawkins, "Dynamic Interfacial

Tension in Crude Oil/Alkali/Surfactant Systems", presented at the 40th Can. Chem. Eng. Conf., Halifax, Nova Scotia, Canada, July 15-21, 1990.

398. Nasr-El-Din, H.A., A. Afacan, J. Foster and J.H. Masliyah, "Transport of

Sand-Water Slurries through a Rotary Drum with an End-Plate", presented at the 39th Can. Chem. Eng. Conf., Hamilton, Ontario, Canada, October 1-4, 1989.

399. MacTaggart, R.S., H.A. Nasr-El-Din and J.H. Masliyah, "Solids

Concentration Measurements in Mechanically Agitated Vessels", presented at the 39th Can. Chem. Eng. Conf., Hamilton, Ontario, Canada, October 1-4, 1989.

400. Nasr-El-Din, H.A., K.C. Khulbe, V. Hornof and G.H. Neale, "Effects of

Interfacial Reaction on the Radial Displacement of Oil by Alkaline Solutions", presented at the 38th Can. Chem. Eng. Conf., Edmonton, Alberta, Canada, October 3-5, 1988.

401. Nasr-El-Din, H.A., A. Afacan and J.H. Masliyah, "Wall Sampling from

Horizontal Slurry Pipelines", presented at the 38th Can. Chem. Eng. Conf. Edmonton, Alberta, Canada, October 3-5, 1988.

402. Nasr-El-Din, H.A., A. Afacan and J.H. Masliyah, "Particle Segregation in

Slurry Flow through a Tee with a Horizontal Approach", presented at the 3rd International Symposium on Liquid-Solid Flows, Chicago, Illinois, USA, November 28 - December 2, 1988.

403. Nasr-El-Din, H.A., V. Hornof and G.H. Neale, "Radial Fingering in a

Water-Wet Porous Medium", presented at the 37th Can. Chem. Eng. Conf., Montreal, Quebec, Canada, May 18-22, 1987.

404. Nasr-El-Din, H.A., C.A. Shook and J. Colwell, "The Lateral Concentration

Distributions in Horizontal Slurry Pipeline Flow", presented at the 2nd International Symposium on Liquid-Solid Flows, Anaheim, California, USA, December 7-12, 1986.

405. Nasr-El-Din, H.A., C.A. Shook and J. Colwell, "Determination of Solids

Concentration in Slurries", presented at the 10th Int. Conf. on the Hydraulic Transport of Solids in Pipes, Innsbruck, Austria, October 29-31, 1986.

406. Nasr-El-Din, H.A. and C.A. Shook, "Effect of a 90 Degree Bend on Slurry

Velocity and Concentration Distributions", presented at the Winter Meeting, Synfuels and Coal Energy Symposium, Dallas, TX, USA, February 17-21, 1985.

69

407. Nasr-El-Din, H.A., C.A. Shook and M.N. Esmail, "Probe Sampling from

Slurry Pipelines", presented at the 33rd Can. Chem. Eng. Conf., Toronto, Ontario, Canada, October 2-5, 1984.

408. Nasr-El-Din, H.A., C.A. Shook and M.N. Esmail, "Isokinetic Sampling

Studies", presented at the 32nd Can. Chem. Eng. Conf., Vancouver, British Columbia, Canada, October 3-6, 1983.