West Texas Overthrust Play

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A subsurface technical description of a major natural gas play in West Texas.

A subsurface technical description of a major natural gas play in West Texas.

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  • 1. Ouachita Gas Fairway Unlocking Multiple Plays in a Developing Resource Presented to Ft. Worth SIPES Chapter March 27, 2009
  • 2. Acknowledgements
    • Big Canyon Energy, Inc.
    • Longfellow Energy, LP
    • SandRidge Energy, Inc.
    • Providence Technologies, Inc.
    • Permian Exploration Co.
    • NationsGas Partners, LLC
    • Beeson Energy, Inc.
    • Dr. Ron Blakey – N. Arizona University
    • Dr. Chris Scotese – Univ. Texas Arlington
    • Dr. James Alber – Emporia University, Kansas
  • 3. Regional Ouachita Thrust System
    • Regional thrust fault system crosses Texas, SE Oklahoma, Arkansas and the Appalachians.
    • Drilling success in Pinon Field has demonstrated 5.1 TCF (3P-EUR)* and established the analog for a major new producing gas trend.
    Pinon Field 5.1 TCF (3P-EUR) 4,000’-8,500’ * SandRidge Investor Presentation 10/2008
  • 4. Historical Basin Development Elsinore, 1958 (Devonian, Ellenburger) 236 BCF 50 wells 11,500’ depth Pakenham, 1994 (Thrust Front Strawn) 11 BCF 178 wells 11,700’ depth Brown Bassett, 1959 (Ellenburger) 1.8 TCF 143 wells 14,500’ depth Geaslin, 1999 (Wolfcamp) 30 BCF 117 wells 7,500’ depth McKay Crk, 1979 (Caballos) 13.2 BCF 10 wells 7000’ depth Thistle, 1984 (Caballos) 4.7 BCF 15 wells 4,000’ depth Gomez, 1966 (Ellenburger) +5.2 TCF 224 wells 25,000’ depth Puckett, 1957 (Devonian, Ellenburger) 4.2 TCF 106 wells 13,200’ depth Grey Ranch, 1968 (Devonian, Ellenburger) 648 BCF 18 wells 15,500’ depth Pinon, 1987 (Caballos, Tesnus) 300 BCF 620 wells 4,500’ - 8,500’ depth Pakenham, 1994 (Wolfcamp) 113 BCF 178 wells 7,500’ depth West Texas Producing Zone Map Courtesy of Midland Map Co.
  • 5. Stacked Play Opportunities
    • Wolfcamp Sands
    • Tesnus Sands
    • Caballos Novaculite
    • Thrust Front Strawn
    • Sub-thrust Paleozoic
    Diagram Courtesy of Providence Technologies, Inc.
  • 6. Tectonic Evolution Paleogeographic Reconstruction by Dr. Ron Blakey ( [email_address] ) Department of Geology , Box 4099 Northern Arizona University Flagstaff, AZ 86011 http://jan.ucc.nau.edu/~rcb7/nam.html
  • 7. Ordovician 470 mya Tobosa Basin Ancestral Permian Basin Ordovician Shelf Margin Deep Water Deposition Platform Carbonates © PALEOMAP PROJECT Used by permission
  • 8. Ordovician 450 mya © PALEOMAP PROJECT Used by permission
  • 9. Silurian 430 mya © PALEOMAP PROJECT Used by permission
  • 10. Devonian 400 mya © PALEOMAP PROJECT Used by permission
  • 11. Devonian 385 mya © PALEOMAP PROJECT Used by permission
  • 12. Devonian 360 mya © PALEOMAP PROJECT Used by permission
  • 13. Mississippian 345 mya © PALEOMAP PROJECT Used by permission
  • 14. Mississippian 325 mya © PALEOMAP PROJECT Used by permission
  • 15. Pennsylvanian 315 mya Compressive collision of North America and South America involves several hundred miles of foreshortened section The Ouachita Thrust Belt through multiple stacked intervals separated by imbricate thrust faults accommodates this large volume of deep water sediments including deep water carbonates, fine grained turbidite sands and shales © PALEOMAP PROJECT Used by permission
  • 16. Typical Ouachita Cross Sections Reed & Strickler, Structural Geology of the Marathon Thrust Belt, WTGS Field Guide, 1990
  • 17. Valverde Basin Pinon Field 5.1 TCF (EUR-3P) 4,000’-8,500’
  • 18. Stratigraphy & Cross Section Diagram from SandRidge Energy, Inc. Presented at Goldman Sachs Global Energy Conference 1/12/2008 EUR 4.0 bcf/well EUR 40.0 bcf/well EUR 7.3 bcf/well EUR 2.0 bcf/well EUR 1.5 bcf/well
  • 19. Stratigraphic Correlation Reed & Strickler, Structural Geology and Petroleum Exploration of the Marathon Thrust Belt, West Texas, 1990
  • 20. Fairway Dimensions Ouachita Play Fairway Ouachita Play Fairway 25 miles 200 miles Caballos Tested 4,800 mcf CAOF Pinon Field 5.1 TCF EUR – 3P Caballos Tested 1,950 mcf 16/64” choke Deep 15,000’ Shallow 3,000’
  • 21. Regional Acreage Play Ouachita Play Fairway Ouachita Play Fairway During the last three years over 1.5 million acres put under lease. However, many leases will turn over during 2009/2010.
  • 22. Pipeline Infrastructure Waha Hub Market Price Point Grey Ranch CO2 Processing ROC Plant CO2 Processing In July 2008, Occidental and SandRidge announced a joint venture to build and operate the Century CO 2 Gas Plant. Combined with existing plants this will allow treating of up to 1.0 Bcf/day by year end 2011. Total cost will be $1.1 billion and includes a 160 mile pipeline. OXY will net an estimated 450 MMCFD of CO 2 for enhanced oil recovery projects.
  • 23. Pinon Field – Sand Ridge Energy Sand Ridge Energy has drilled > 500 new wells in Pinon Field since acquiring the field in 2006. The field currently is producing 300 MMCFPD with plans to increase production when additional gas processing facilities are completed in 2010. Wells are permitted for both Ouachita (8,500’) and sub-thrust Paleozoic tests (12,500’). Area of Sub-thrust Paleozoic Structure
  • 24. SandRidge Commitment to WTO
    • 611,000 net acres on trend
    • 2,600 locations identified in Pinon Field
    • 1,500 sq. miles of 3D over three years
    • 2007 – 250 wells 25 drilling rigs active
    • 2008 – 250 wells 30 drilling rigs active
    • 2009 – 100 wells 5 drilling rigs anticipated
  • 25. SandRidge 3D Seismic Program
  • 26. Multiple Thrust Plates Defined by 3D Seismic
  • 27. Four Thrust Sheets Dugout Creek Thrust Haymond Thrust Frog Creek Thrust Warwick Thrust Paleozoic Sub-Thrust Structures
  • 28.  
  • 29. Paleozoic Structure Play Diagram Courtesy of Providence Technologies, Inc. Strawn/Devonian/Ellenburger High-side Fault Closures
  • 30. Multi Pay Paleozoic Potential
    • Ellenburger, Fusselman, Devonian, Strawn
      • Fractured Limestone and Dolomite Reservoirs
      • Structurally controlled – high side fault closures
      • Structures found in open basin and sub-thrust
      • Explore using 2D & 3D seismic
      • Depth range 12,000’ – 25,000’
        • Ellenburger 30-60 BCF/well
        • Fusselman 5-20 BCF/well
        • Devonian 5-30 BCF/well
        • Strawn 4-5 BCF/well
      • Ellenburger & Devonian may have high CO 2 content!
  • 31. Paleozoic Structure Sub-Thrust Play Devonian/Ellenburger Structures Sub-Thrust Diagram Courtesy of Providence Technologies, Inc.
  • 32. Brown Bassett Field Ellenburger Pay Gas/Water Contact
  • 33. Mobil #2 Bassett Goode 117 BCF
  • 34. Mobil #2 Banner Est. 28 BCF
  • 35. Thrusted Ouachita Facies Play Caballos, Tesnus Sands Diagram Courtesy of Providence Technologies, Inc.
  • 36. Haymond Formation © James S. Alber used by permission http://academic.emporia.edu/aberjame/struc_geo Pennsylvanian Haymond turbidites, tilted near vertical
  • 37. Dimple Limestone © James S. Alber used by permission http://academic.emporia.edu/aberjame/struc_geo Pennsylvanian carbonate turbidites interbedded with chert (dark)
  • 38. Dimple 4600 4700 4500 110 Feet Apparent Thickness 10% Tight Reservoir Sweet Gas Accounts for 1% of Production in Pinon Field Requires Frac Job
  • 39. Dimple – Pinon Field Hyperbolic decline indicates low permeability reservoir with flush production coming from fracture systems induced by fracture stimulation 2.7 BCF EUR 3.5 million cu ft/day 1.2 BCF CUM 2 years
  • 40. Dimple – Pinon Field 1.8 BCF EUR 800 mcf/day 0.2 BCF CUM 2 years
  • 41. Tesnus Sands Dimple Limestone 170 Feet Apparent Thickness Tesnus Sands 350 Foot Interval 10’ – 20’ Sands ` Sweet Gas Accounts for 20% of Production in Pinon Field Requires Frac Job
  • 42. Caballos Ridge © James S. Alber used by permission http://academic.emporia.edu/aberjame/struc_geo Ridge of Devonian Caballos Novaculite
  • 43. 1 st Caballos 6800 6900 7000 6700 220 Feet Apparent Thickness 10% Sour Gas Contains up to 70% CO 2 (CO 2 concentration drops west to east across field) Accounts for 38% of Production in Pinon Field No Frac Required
  • 44. Gas Analysis – 1 st Caballos - Sour West Ranch #5-2C Sampled Feb-2004
  • 45. Gas Analysis-1 st Caballos - Sour Longfellow 600 #4-2 Sampled Mar-2006
  • 46. Caballos Novaculite © James S. Alber used by permission http://academic.emporia.edu/aberjame/struc_geo Caballos Novaculite Note the distinctive fractures in this brittle rock
  • 47. 2 nd Caballos 7700 7800 7600 330 Feet Apparent Thickness 10% Sweet Gas (No evidence of CO 2 ) Accounts for 40% of Production in Pinon Field No Frac Required
  • 48. Gas Analysis – 2 nd Caballos - Sweet West Ranch #33-2 Sampled Feb-2004
  • 49. Caballos Chert – Pinon Field Linear decline indicates moderate permeability reservoir resulting from natural fracturing of chert reservoirs involved in the thrust belt Linear decline indicates moderate permeability reservoir resulting from natural fracturing of chert reservoirs involved in the thrust belt 2.6 BCF EUR 1.3 million cu ft/day 1.2 BCF CUM 8.5 years
  • 50. Caballos Chert – Pinon Field 6.1 BCF EUR 10 million cu ft/day 5.5 BCF EUR 6 years
  • 51. Caballos Chert – Pinon Field 7.3 BCF EUR 4.1 million cu ft/day 4.3 BCF CUM 7 years
  • 52. Caballos Chert – Pinon Field 7.8 BCF EUR 2.4 BCF CUM 1.3 million cu ft/day 8 years
  • 53. Caballos Chert – Pinon Field 13.2 BCF EUR 8.8 BCF CUM 4.1 million cu ft/day 13 years
  • 54. Pinon Field Producing Analog Pecos County, Texas
  • 55.  
  • 56.  
  • 57. Stratigraphy & Cross Section Diagram from SandRidge Energy, Inc. Presented at Goldman Sachs Global Energy Conference 1/12/2008 EUR 4.0 bcf/well EUR 40.0 bcf/well EUR 7.3 bcf/well EUR 2.0 bcf/well EUR 1.5 bcf/well
  • 58. Pinon Field Completions No CO 2 Reported in Ouachita Fields East of Pinon Field 0.2 bcf 1% Sweet 10 Dimple 1.5 bcf 1% Sweet 5 Wolfcamp 2.0 bcf 20% Sweet 125 Tesnus 4.0 bcf 40% Sweet 77 Second Caballos 7.3 bcf 38% 70% CO 2 113 First Caballos EUR/well % of Fieldwide Methane Production Gas # of Wells Formation
  • 59. Pinon Field – Ouachita Facies Analog 300 BCF Cumulative Production 621 Completions 300 MMCF/day As of Oct, 2008
  • 60. Pinon Field – Dimple Structure Simplified w/o faults
  • 61. Pinon Field Metrics
    • Completed Wells 621
    • Field Cumulative 300 BCF
    • Daily Production 3000 MMCF/day
    • Area 17,000 acres
    • Spacing 40 acres
    • Trap Thrust Fault Closures
    • HC Column 4,000’
    • Drive Gas Expansion
    • Water Contact None Identified
    • Inert Gases 15% CO 2 (average of all wells)
  • 62. Pinon Field Drilling Metrics
    • Depth 4,000’ - 8,500’
    • Drilling Fluids Air & Mist
    • Directional Tools Minimum Effort
    • Logging Triple Combo
    • Completion CO2 or N2 Foam
    • Completed Well $1.5 million
    • Drilling Time 15 days
  • 63. Thrust Front Strawn Play Thrust Front Strawn Diagram Courtesy of Providence Technologies, Inc.
  • 64. Thrust Front Strawn
    • Pennsylvanian Strawn Limestones have been “unroofed” by the Ouachita Thrust and now lie approximately 2-3 miles in front of the surface expression of the thrust.
    • ACU field (Pakenham area), discovered in 2000 now has 14 completed wells.
    • Recent drilling at Poulter Field using 3D (Pakenham area) has resulted in wells testing at rates in excess of 17 mmcf/day.
  • 65. Thrust Front Strawn Fields Pakenham Field (1994) Thrusted Strawn 8,500’ 9 Completions Strawn Limestones are involved in the Ouachita Thrust and are proven highly productive ACU Field (2000) Thrusted Strawn 11,500’ 14 Completions Poulter Field (2004) Thrusted Strawn 10.500’ 11 Completions Newfield #3404 17 MMCF/day On 3D seismic May/2007
  • 66. Thrust Front Strawn – ACU Field 10.2 BCF EUR High initial rate and linear decline indicates excellent permeability reservoirs involved in the thrust belt 7.1 BCF CUM 6.6 million cu ft/day 7 years
  • 67. Thrust Front Strawn – ACU Field 4.5 BCF EUR 4.2 BCF CUM 3.3 million cu ft/day 13 years
  • 68. Thrust Front Strawn – ACU Field 0.9 BCF EUR 1.8 million cu ft/day 0.7 BCF CUM 4 years
  • 69. Thrust Front Wolfcamp Wolfcamp Sands Diagram Courtesy of Providence Technologies, Inc.
  • 70. Thrust Front Wolfcamp
    • Wolfcamp Sands are shed off the Ouachita Thrust Front piling up in thick stacked sand packages.
    • Pakenham Field, the first development of this play-discovered in 1994 – now fully developed with 178 wells and EUR of +300 BCF.
    • Drilling Depth = 5,500’
    • Estimated Well Cost = $1.25 M
    • Wells require fracture stimulation
  • 71. Wolfcamp – Pakenham Field 1.2 BCF EUR 0.9 BCF CUM 3.3 million cu ft/day 2 years
  • 72. Wolfcamp – Pakenham Field 0.6 BCF EUR 0.4 BCF CUM 1.0 million cu ft/day 2.5 years
  • 73. Wolfcamp – Pakenham Field 2.4 BCF EUR 2.3 BCF CUM 2.0 million cu ft/day 15 years
  • 74. Wolfcamp – Pakenham Field 0.85 BCF EUR 0.6 BCF CUM 1.3 million cu ft/day 10 years
  • 75. Play Summary Average of 10-12 BCF/Well (Ouachita Facies) 4,000’ – 8,500’ Sub-Thrust Ouachita Thrust Fairway Position 3.0 2 1.5 Wolfcamp 30.0 1 30.0 Ellenburger 25.0 1 25.0 Sil-Dev 4.0 1 4.0 Strawn 8.0 2 4.0 Caballos 3.0 2 1.5 Tesnus Well EUR (BCF) Zones/well EUR/interval (BCF) Formation
  • 76. Vibroseis in Val Verde
  • 77. Val Verde Basin Cretaceous Limestones capping Mississippian Tesnus (flysch) near Marathon, TX © James S. Alber used by permission http://academic.emporia.edu/aberjame/struc_geo
  • 78. Pecos River - Near Comstock
  • 79.  
  • 80. Surface Generated Noise
  • 81. Shot Record
  • 82. New Shooting Parameters Courtesy Conoco Courtesy Permian Exploration Corporation
  • 83. Val Verde Recon Program 2,500 mile Proposal 750 Miles PXC Recon Covers 25% of Trend Pakenham 3D 130 sq. miles (PSTM) Play Analog Volume
  • 84. Contact dB, LLC Petroleum Advisors Richard G. Boyce 4849 Greenville Ave. Suite 1150 Dallas, Texas 75206 Tel: 214-796-9571 Fax: 214-447-9523 Email: [email_address]