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A Technical and Economic Study of Completion Techniques in Five Emerging US Gas Shales: A Woodford Shale Example
- Archna Agrawal (Chevron) | Yunan Wei (C&C Reservoirs) | Stephen Holditch (Texas A&M University)
- Document ID
- Society of Petroleum Engineers
- SPE Drilling & Completion
- Publication Date
- March 2012
- Document Type
- Journal Paper
- 39 - 49
- 2012. Society of Petroleum Engineers
- 6.9.2 Shale Gas, 1.7 Fundamental Research in Drilling & Completions
- Five Emerging US Gas Shales, Economic Study, Completion Techniques, Shale gas
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- 2,340 since 2007
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With the increased demand for energy and the declining conventional hydrocarbons worldwide, energy companies are turning to unconventional resources such as shale gas. With more than 2, 000 Tcf of gas in place identified in just 5 shale gas plays in the United States, shale-gas formations are now the number one targets for exploration drilling. Furthermore, there are still many more major shale-gas plays and basins waiting to be explored, evaluated, and developed. Because of the extremely low permeability of most shale formations, it is essential to select the appropriate completion techniques for shale-gas reservoirs. There are very few papers in the petroleum literature that provide a logical method to select completion techniques for given shale-gas-reservoir conditions. There are papers discussing successful completion techniques that seem to work for a specific shale. We have used many of these SPE papers to help define "best practices" in completing shale-gas reservoirs. We then developed logic to determine the best practice in completing shale-gas reservoirs as a function of reservoir conditions. In this paper, we will specifically cover the logic we have developed for choosing completion techniques in shale-gas reservoirs.
First, we performed a literature review on the five basins as well as on all shale-gas plays in the US to determine the best practices in shale-gas completion techniques in fluctuating price environments and identify key geologic parameters that affect overall well performance. From our literature review, we identified seven pertinent geologic parameters that influence shale-gas completion practices. Next, we identified different completion trends in the industry for different geologic settings. Subsequently, we generated an economic model and performed sensitivity analysis to determine optimal completions for each gas-shale basin. On the basis of these economic models, we developed decision flow charts to select completion techniques. Finally, we programmed the flow chart, and we call this program Shale Gas Advisor. This program can be used to determine optimum completion best practices not only for the five gas-shale basins discussed, but also for gas-shale plays that have similar geologic attributes. We validated the program with published case histories in the SPE literature.
Agrawal, A. 2009. A Technical and Economic Study of Completion Techniquesin Five Emerging U.S. Gas Shale Plays. MS thesis, Texas A&M University,College Station, Texas (December 2009).
Andrews, Rick. 2007. Production and Outcrop/Reservoir Characteristics of theWoodford Shale in South-Central and Southeast Oklahoma. Search and DiscoveryArticle #10137, http://www.searchanddiscovery.com/documents/2007/07100andrews/index.htm(posted 4 October 2007). Adapted from Hydrocarbon Production and OutcropCharacteristics of the Woodford Shale in Southern and Eastern Oklahoma, apresentation given at the Tulsa Geological Society (TGS) Luncheon, Tulsa, 11September.
Ardmore basin Woodford gas plan takes off. 2008. Oil & Gas Journal 106 (20): 26.
Berman, A.E. 2009. Shale Plays and Lower Natural Gas Prices: A Time forCritical Thinking. Paper presented at the OOGA 2009 Annual Winter Meeting,Columbus, Ohio, 11-13 March. http://www.ooga.org/docs/2009WinterMeeting/Berman-PanelDiscussion-09WM.pdf.
Brown, D. 2007. If It's Shale, It's Probably in Play. Explorer 28 (4): 10-16. http://www.aapg.org/explorer/2007/04apr/beyond_barnett.cfm.
Brown, D. 2008. Big Potential Boosts the Woodford. Explorer 29 (7): 20-22. https://www.aapg.org/explorer/2008/07jul/woodford.cfm.
Cardott, B.J. 2007. Overview of Woodford Gas-Shale Play in Oklahoma. Paperpresented at the 2007 Woodford Gas Shale Conference, Oklahoma City, Oklahoma,USA, 23 May.
Çemen, I., Ataman, O., Puckette, J., and Boardman, D. 2007. NaturalFractures in Woodford Shale, Arbuckle Mountains, Oklahoma. Paper No. 131-6presented at the 2007 GSA Denver Annual Meeting, Denver, 28-31 October.
Coffey, B. 2007. Gas Resource Potential of the Woodford Shale, Arkoma Basin,Oklahoma. Paper presented at the 2007 AAPG Rocky Mountain Meeting, Snowbird,Utah, USA, 7-9 October. AAPG Search and Discovery Article #90071.
Comer, J.B. 2008. Reservoir characteristics and production potential of theWoodford Shale. Pete's Place, 22 August 2008, http://petesplace-peter.blogspot.com/2008/08/woodford-shale-major-new-unconventional.html(accessed 19 April 2009).
Curtis, J.B. 2002. Fractured Shale-Gas Systems. AAPG Bull. 86 (11): 1921-1938. http://dx.doi.org/10.1306/61eeddbe-173e-11d7-8645000102c1865d.
Drillinginfo. 2008. Oil and Gas Production (graph). Wireline Blog,June 2008, http://info.drillinginfo.com/wireline/wp-content/uploads/2008/06/prodgraph6-8.gif.
Energy Information Administration (EIA). 2008. Annual Energy Outlook 2008,With Projections to 2030. Annual Report No. DOE/EIA-0383(2008), EIA/US DOE,Washington, DC (June 2008). http://www.eia.gov/oiaf/aeo/pdf/0383(2008).pdf.
geology.com. 2011. Haynesville Shale: News, Map, Videos, Lease and RoyaltyInformation. Wellhead Price History, http://geology.com/articles/haynesville-shale.shtml.
Godec, M.L., Van Leeuwen, T., and Kuuskraa, V.A. 2007. Economics ofUnconventional Gas. White Paper, OGJ Unconventional Gas Article #5, AdvancedResources International, Inc., Washington, DC (July 2007), http://www.adv-res.com/pdf/ARI%20OGJ%205%20Unconventional%20Gas%20Economics%207_24_07.pdf.
Holditch, S. and Old, S. 2008. Resource Quantification System GivesIncentive for Exploration and Development of Unconventional Reservoirs inFrontier Basins. Technical Report, Crisman Institute Project No. 1.6.3, TexasA&M Petroleum Engineering, College Station, Texas (April 2008).
Jordan, C.L., Jackson, R.A., and Smith, C.R. 2008. Making the Most ofConventional Decline Analysis. Paper SPE 114953 presented at the CIPC/SPE GasTechnology Symposium 2008 Joint Conference, Calgary, 16-19 June. http://dx.doi.org/10.2118/114953-MS.
Langford, S. 2009. The Woodford Shale. Presented at the OGS 2008 Gas ShalesWorkshop, Norman, Oklahoma, USA, 22 October. http://www.ogs.ou.edu/pdf/GSLangfordS.pdf.
Marathon Oil Corporation. 2009. Marathon Announces Natural Gas Discovery inNew Area of Oklahoma's Woodford Shale Resource Play. Reuters, 7 January2009, http://www.reuters.com/article/2009/01/07/idUS126742+07-Jan-2009+PRN20090107.
National Energy Technology Laboratory (NETL). 2008. Oil and Natural GasSupply: Future Supply and Emerging Resources, http://www.netl.doe.gov/technologies/oil-gas/FutureSupply/FutureSupply_main.html(accessed 22 July 2008).
Old, S., Holditch, S.A., Ayers, W.B., and McVay, D.A. 2008. PRISE: PetroleumResource Investigation Summary and Evaluation. Paper SPE 117703 presented atthe SPE Eastern Regional/AAPG Eastern Section Joint Meeting, Pittsburgh,Pennsylvania, USA, 11-15 October http://dx.doi.org/10.2118/117703-MS.
Pickering, G. and Smead, R. 2008. North American Natural Gas SupplyAssessment. ACSF Commissioned Study, Navigant Consulting, Chicago, Illinois(July 2008), http://www.navigant.com/insights/library/energy/north_american_natural_gas_supply_assessment/.
Singh, K. 2006. Basin Analog Approach Answers Characterization Challengesof Unconventional Gas Potential in Frontier Basins. MS thesis, TexasA&M University, College Station, Texas (December 2006).
Singh, K., Holditch, S.A., and Ayers, W.B. Jr. 2007. Basin AnalogInvestigation Answer Characterization Challenges of Unconventional GasPotential in Frontier Basins. Paper OMAE 2007-29688 presented at the 26thInternational Conference on Offshore Mechanics and Arctic Engineering, SanDiego, California USA, 10-15 June.
Singh, K., Holditch, S.A., and Ayers, W.B. Jr. 2008. Basin AnalogInvestigations Answer Characterization Challenges of Unconventional GasPotential in Frontier Basins. J. Energy Resour. Technol. 130 (4): 043202-1-043202-7. http://dx.doi.org/10.1115/1.3000104.
Wei, Y. 2009. An advisory system for the development of unconventionalgas reservoirs PhD dissertation, Texas A&M University, College Station,Texas (May 2009).
Wei, Y. and Holditch, S.A. 2009. Computing Estimated Values of OptimalFracture Half Length in the Tight Gas Sand Advisor Program. Paper SPE 119374presented at the SPE Hydraulic Fracturing Technology Conference, The Woodlands,Texas, USA, 19-21 January. http://dx.doi.org/10.2118/119374-MS.
Wei, Y., Cheng, K., and Holditch, S.A. 2009. Multicomponent Advisory SystemCan Expedite Evaluation of Unconventional Gas Reservoirs. Paper SPE 124323presented at the SPE Annual Technical Conference and Exhibition, New Orleans,4-7 October. http://dx.doi.org/10.2118/124323-MS.
Wickstrom, C.W. 2008. Woodford Shale Gas in Oklahoma. Paper presented at the2008 AAPG Annual Convention, San Antonio, Texas, USA, 20-23 April. AAPG Searchand Discovery Article #90078, http://www.searchanddiscovery.com/abstracts/html/2008/annual/abstracts/409000.htm.
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