The Bakken ‘A Non-Shale Shale Play’ - The U.S.-China ... - ConocoPhillips-McMaster Bakke… ·...
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Transcript of The Bakken ‘A Non-Shale Shale Play’ - The U.S.-China ... - ConocoPhillips-McMaster Bakke… ·...
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ConocoPhillips Unconventional Resource Experience in North America
CBMSan JuanDrunkards Wash Uinta Powder RiverHorseshoe CanyonManville
Shale BarnettHaynesvilleMuskwaMontneyAustinAnadarkoBakken
Tight GasPiceanceAnadarkoSan JuanDeep BasinUintaGreater GreenLoboBossier
ConocoPhillips is successfully using this knowledge and experience toexpand its presence in resource plays globally
Montney
Muskwa
BakkenGreater
Green River
Eagleford
Uinta
San Juan
HaynesvilleBarnett
Piceance
Anadarko
Horseshoe Canyon
Manville
Lobo
Deep Basin
Powder River
Bossier
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Oil Potential
Many Estimates of Resource PotentialDow and Williams (1974) 10 billion barrels of oil generatedWebster (1982) 92 billion barrels of oil generatedSchmoker and Hester (1983) 132 billion barrels of oil generatedPrice (unpublished USGS) 271-503 billion barrels of oil generatedFlannery and Krause (2006) 300 billion barrels of oil generated Pollastro (2008) 3.6 billion barrels recoverable
Oil-Source Correlations suggest that most of oil remains in the Bakken
Overlying Mission Canyon Formation oils distinctly different
Production Predominantly from Middle Member
Mixture of sand, silt, carbonate mudstone39-460 API oil @ ~2,600 – 3,500m TVD
Source: Headington Oil Company
Estimates of over 100 Billion Bbls of Oil in Place
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Parshall Field
Canadian Bakken Development
1980’s+ HZ development
US Bakken HZ activity
Williston Basin
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Middle Bakken / Three Forks Pay Variation
Modified from CRI web, 2010
West East
• Middle Bakken pay not a shale lithologyComplex, laterally varying lithology & play typesStratigraphic / diagenetic trap drivers
• Underlying Three Forks ‘non-shale’ play potential established 2008Also sourced by Bakken shaleDual zone development underway
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Drilling and Completion Impact
Source: The Oil Drum Nov 2009
Vertical Well Production (1961+) = 50,000 barrels Horizontal Well Production (1990+) = 100,000 - 400,000 barrels Multi-Stage Frac Production (2000+) = 500,000- 800,000 barrels
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0
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
2/17/2005 9/5/2005 3/24/2006 10/10/2006 4/28/2007 11/14/2007 6/1/2008 12/18/2008Date
Oil
bbls
/day
0
10
20
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Wel
l Cou
nt
Gross Oil Well Count
First Hybrid Well – 650 BOPDFirst Plug & Perf Well – 725 BOPD
Multi Stage Targeted Fracs
Bakken Horizontal Play
New completion designs improves results…continually modeling and testing different types of stimulation
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Hybrid Bakken Completion Design
7" Shoe+/- 11,000' Swell Pkr
11,900'Swell Pkr12,800'
Swell Pkr14,600'
Swell Pkr19,100'
TD+/- 20,000'
4-1/2" Shoe+/-200' off TD
Press Operated Vent +/-19,500'Pinned at +/-4,200 psi Over Hydrostatic
SlidingSleeve18,700'2.75" Ball
SlidingSleeve17,900'3.0" Ball
SlidingSleeve17,000'3.25" Ball
4-1/2", 11.6#/ft, P-110 Liner w/4.0" ID
Five Perf & Plug IntervalsFrom 7" shoe to +/- 15,500'
Separated with swell packers
Generic WBDBakken Horizontal Well Play
Hybrid Well Bore Design September 2008
Robert Clark & Clyde Findlay IIBakken Completions Team
6" Hole
SlidingSleeve16,000'3.50" Ball
Swell Pkr15,500'
Swell Pkr17,500'
Swell Pkr18,300'
Swell Pkr16,500'
Critical Items
1) Swell packer placement at 15,500' segmenting sleeve section (toe) from P&P section (heel). 15,500' is max CT depth for plug drill out and tool retrieval.2) Greatly reduced friction pressure loss vs. all sleeve completion. Now smallest ball 2.75" in sleeve section vs. all sleeve completion with 1.25" as smallest ball.3) New hybrid completion: Five P&P intervals & five sleeve intervals. *Well bore segmentation *1-day frac on hardest 1/2 of the well (toe)
Swell Pkr13,700'
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2000 ft
Well 1 Well 2
Simul-Frac, Zipper Frac, Sequential Frac
Bakken Fracture Stimulation
Simultaneous Fracture Stimulation• Stimulating two horizontals at the same time
Zipper Frac• Alternating frac between two offsetting wells
Sequential Frac• Stimulating one horizontal after another
Possible Methods for Controlling and Steering Fracture Stimulations
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60º Phasing6 Perfs @ 300°, 0°, 60°
60º Phasing6 Perfs @ 0°, 60°, 120°, 180°, 240°, 300°
Oriented Perfs Radial PerfsUsed to direct frac initiation upwardinto the Bakken from the Three Forks.
Used to direct frac initiation radiallyin the Bakken.
Bakken Horizontal Completions
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Summary: Keys To Peak Performance
Control large resourceFocus, flexibility & speed
Understand the ReservoirNeed to integrate stratigraphy, reservoir description and rock mechanics with drilling and completion technology to pick the best combination to release the hydrocarbons from the rock
Aggressive DevelopmentEnhanced Value
Invest in Infrastructure Stage GrowthFocus on Infrastructure EfficiencyDevelop Solid Working Relationships
Be Flexible and CreativeCharacterization, stimulation, infrastructure, & materials
Keys to success are found throughout project life cycle