Upload
marcel-zeestraten
View
381
Download
3
Embed Size (px)
Citation preview
Marcel Zeestraten, Phd Senior consultant – Concept Engineering
Upstream Oil & Gas
Conceptual Surface Facilities Design• Comprises the early stages of project development – Identify, Assess &
Select• Is an integral part of a Field Development Plan• Offers the best opportunity to influence the success of a project and
the value it creates• Requires low expenditure compared to the project execution stage• Requires a very small team of engineers, with a very broad skill set
Solid process engineering background Good understanding of other oil & gas disciplines
Reservoir engineering Production Technology Economics Production Chemistry Flow assurance Materials & Corrosion Project engineering Etc.
Creativity & ability to think out-of-the-box
Front End Loading• The practice of placing emphasis on the Conceptual Design phase in
Project Development
Conceptual Design of Surface Facilities
Marcel Zeestraten – Resume summary
Experience
Years
Upstream Oil and Gas industry 22Shell International Staff Pool 11
Scotland 2
England 1
Venezuela 4
Petroleum Development Oman 4
Other roles in Oman 11Petroleum Development Oman 4
BG group 3
Oman Oil E&P 1
Xodus (consultancy) 3
Feasibility / Select phases of project lifecycle 11
• PhD – Delft University of Technology, the Netherlands• Core discipline: Process Engineering
• Examples of Conceptual Designs delivered are given in the next few slides• Qualified HAZOP chairman
Conceptual Design Example 1: Abu Butabul – Oman Block 60 BG-Oman
Project Characteristics• Remote location (Oman Empty Quarter)• Gravel plain and high sand dunes• Tight gas / condensate field• Challenging because of marginal economics• High level of uncertainty regarding well productivity• Conceptual Surface Facilities design as Field Appraisal progresses• Design capacity 90 mmscf/d of gas and 6000 bbl/d of condensate
Many different concepts considered, depending on the scale of the development• Extended well testing facilities• Multiphase export to third party processing facilities• In-field processing plant to meet export specs
Significant conceptual design aspects • Accurate PVT characterization of well fluids• Multiphase flow• Corrosion and material selection• Multiphase pressure boosting• Gas dew point control (HC and water)• Condensate stabilization• Power generation• Water disposal (evaporation pond)• Third party contracts for processing and fluid transportation
Conceptual Design Example 2: Musandam Gas PlantOman Oil
Project Characteristics• High GOR sour oil• Offshore wellhead platform• Subsea multiphase production pipeline to shore• Export of stabilized crude to a tanker loading buoy• Gas conditioning and export to a nearby power plant• LPG extraction and export by road tanker• Sulphur recovery and export by road tanker• ‘Inherited’ process design required substantial rework.• Facilities cost approx. $600 million
Process Plant Elements• Slug catcher• HP three phase separator• Crude stabilization column• 2 stage gas compression• Gas sweetening (Amine process)• Sulphur recovery (Claus process)• Gas dehydration (TEG process)• Gas HC dew point control (low temperature
separation)• LPG extraction from gas condensate• Sour water stripper• Crude storage• Crude export to loading buoy• Road tanker loading for LPG and Sulphur• Flare• Utilities
Conceptual Design Example 3: Marmul Polymer projectPetroleum Development Oman
Off-plot facilities• Massive infill campaign doubles the number of wells from 600 to 1200 – with an
option to double again to 2400 wells in future• Surface congestion necessitates re-design of fluids gathering system• Innovative design realizes $200 million savings in fluid gathering• A further $100 million savings identified subject to a successful technology trial• Design allows switch over from old to new design with minimal deferment
On-plot facilities• Water de-oiling in the presence of back-produced
polymer challenges existing technology Search for innovative technologies in the market
that meet that challenge• Substantial expansion of produced water clean-up,
pumping and polymer mixing facilities.
Total surface facilities cost exceeds $ 1 billion.
Conceptual Design Example 4: Field Development PlansPetroleum Development Oman
Project Characteristics• FDP studies for 3 clusters totaling 15 fields have been awarded to consultant• Predominantly brown field developments• Two clusters have been completed so far.• Surface facilities conceptual designs identify > $100 mln in savings
Subjects Addressed• Evaluate opportunities to recover flared gas
economically• Trouble shoot operational problems related to control
of deep water disposal pumps with variable speed drive
• Identify causes of poor well test accuracy• Evaluate pros and cons of produced water re-injection
vs. injection of water from water supply wells• Design well testing and produced fluids gathering
systems to minimize cost.• Identify surface facilities debottlenecking
requirements to accommodate incremental production and water injection rates.
HAZOP Chairman
Approved HAZOP Chairman for Petroleum Development Oman
Examples of HAZOP studies chaired recently:• 11 km Gas Pipeline in Kurdistan
Client: DNO• High GOR, 10% H2S early production facility in Kurdistan
Client: HKN