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GEOSYNTHETICS
The Positive Cost Benefits TenCate Geosynthetics Provide Whiting Petroleum In The Bakken
John HerrmannTenCate GeosyntheticsMarket Development Manager – Oil & [email protected]
Reduced Well Pad & Access Road Construction Costs
$76,000
31%
GEOSYNTHETICS
Soft Soils
GEOSYNTHETICS
The Fix?
GEOSYNTHETICS
Soft Soils
Area stabilized with RS580i
GEOSYNTHETICS
2014 ASCE Shale Energy Engineering ConferenceThe Positive Environmental and Cost Impact of Geosynthetics
in Well Pad and Access Road Construction
Bruce A. Lacina1, P.E., M.ASCE, John D. Herrmann2, AffM.ASCE, and Monte Madsen3
1Roadway Reinforcement Technical Manager, TenCate Geosynthetics Americas, 365 S. Holland Dr., Pendergrass, GA 30567, U.S.A., E-mail: [email protected] 2Market Development Manager – Oil & Gas, TenCate Geosynthetics Americas, 637 Avondale Dr., St. Peters, MO 63376, U.S.A., E-mail: [email protected] 3Completions Engineering Team Lead, Whiting Petroleum Corporation, 1700 Broadway, Suite 2300, Denver, CO 80290, U.S.A., E-mail: [email protected] ABSTRACT: The incorporation of high strength geosynthetics provide numerous benefits to oil and gas producers and the engineering consultants tasked with designingtheir well pads and access roads. This paper will present examples of the positiveenvironmental impact and cost benefit high strength geosynthetics provide WhitingPetroleum Corporation in the Williston Basin of North Dakota and Montana, alongwith an example of a gas well pad and access road in central Pennsylvania stabilizedwith the same geosynthetic.
What Functions Do Geosynthetics Serve in Roadways?
Separation
Filtration
Drainage
Confinement
Reinforcement
Separation
Filtration & Drainage
Confinement
Reinforcement
Let’s look at today’s geosynthetics
High flow rateFine filtrationHigh elongation
Low strength to weight ratioCan clog or blind in roadway applications
Nonwoven Geotextiles
Clogging & Blinding
Clogging Blinding
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Good separator fabricHigher strength than nonwovensLow elongation
Poor flow and filtration
Slit Film Woven Geotextiles
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High tensile modulusSuperior damage resistanceGood for paved & unpaved roads
Filtration decreases as strength increases
Woven High Performance Polypropylene Geotextiles
HP Geotextiles
Hydraulic PropertiesHP570 – Flow Rate = 30 gal/min/sfHP270 – Flow Rate = 50 gal/min/sf600X – Flow Rate = 4 gal/min/sf
Tensile Strength at @ 2% StrainHP570 – 1,320 lbs/ftHP270 – 588 lbs/ft500X – 450 lbs/ft
SeparationAOS 30 US Std Sieve (0.60 mm)
HP Geotextiles: Tensile Strength vs. Flow Rates
0
500
1000
1500
2000
2500
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
HP270 HP370 HP570 HP770
Flow
Rat
e (l/
min
/m2 )
Tens
ile S
tren
gth
@ 2
% S
trai
n (k
N/m
)
Tensile Strength
Flow Rate
Used in base reinforcement Good for lateral restraintProvide confinement & reinforcement
Does not offer filtrationDoes not offer separation
Polypropylene Geogrids
GEOSYNTHETICS
Varies
Geosynthetic Functions
Nonwoven
Slit Film Woven
Geogrid
High Performance Woven
Separation Filtration Drainage Confinement Reinforcement
Industry dilemma: One geosynthetic can’t do it all
28 | Presentation title
TenCate Mirafi® RSi-Series
GEOSYNTHETICS
Varies
Geosynthetic Functions
Nonwoven
Slit Film Woven
Geogrid
High Performance Woven
RSi Series
Separation Filtration Drainage Confinement Reinforcement
GEOSYNTHETICS
Product Comparisons
RS580i HP570 BXG120
Ultimate XD 4800 4800 1970
2% XD 1800 1320 620
5% XD 4380 2700 1340
AOS 40 30 NA
Flow Rate 75 30 NA
Permittivity 1.0 0.4 NA
Ci 0.90 0.85 0.80
GEOSYNTHETICS
Poor Filtration – Typical Woven Geotextile
GEOSYNTHETICS
Excellent Filtration - RSi
GEOSYNTHETICS
Whiting Well Pad: CBR < 3%
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Mirafi® RS580i Installed
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4” Minus Aggregate
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Motor Grader Spreads Aggregate
GEOSYNTHETICS
Well Pad Stabilized and Ready For Drilling
GEOSYNTHETICS
Whiting Well Pad Construction – May 2013
GEOSYNTHETICS
Whiting Well Pad Construction – May 2013
Man sinks 2” to 3” (CBR = 0.4 to 0.8)
GEOSYNTHETICS
Whiting Well Pad Construction – May 2013
GEOSYNTHETICS
Whiting Well Pad Construction – May 2013
GEOSYNTHETICS
Drilling – July 2013
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Drilling – July 2013
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Before Mirafi® RS580i
GEOSYNTHETICS
Maintenance Required
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After Mirafi® RS580i
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Whiting Petroleum Cost Analysis
Old Method Unit Amount Unit Cost Total CostInitial 4” aggregate section 2,180 CY $35.00 / CY $76,300
Additional 9” of aggregate section 4,800 CY $35.00 / CY $168,000Total Cost: $244,300
RS580i Method Unit Amount Unit Cost Total Cost6” aggregate section 3,400 CY $35.00 / CY $119,000
RS580i installed 15,000 SY $3.25 / SY $48,750Total Cost: $167,750
GEOSYNTHETICS
Conclusions
• Well pad construction savings: $76,550 per pad (31.3%)• RS580i utilized on 30 pads per year: $2,296,500 savings• CO2 emissions reduction: 606,414 kg per pad (52.3%)• RS580i utilized on 30 pads per year: 18.2 M kg reduction• Whiting estimates a financial burden of $100,000 per day of delay
GEOSYNTHETICS
• Call TenCate• Receive a free design• Try an RSi solution on an upcoming site• Save time and money
What Can You Do
GEOSYNTHETICSwww.mirafi.com
Studies have shown that up to 90% of what is said during a presentation is forgotten within 60 minutes
The 10% we hope you will remember:
Think Ahead….Think TenCate
RSi Geosythetics: Proven Cost Effective Solutions For Tomorrow’s Well Pads
