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Integration of Core and Log Petrophysics: Case Studies in the Mississippian of Kansas

Integration of Core and Log Petrophysics: Case Studies in the Mississippian of Kansas. John H. Doveton. Mississippian Play in Southern Kansas. Gerlach, Sept. 2011. Spivey-Grabs Basil is the largest Mississippian oil field in Kansas with 69 million BO & 850 BCFG.

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Integration of Core and Log Petrophysics: Case Studies in the Mississippian of Kansas

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  1. Integration of Core and Log Petrophysics: Case Studies in the Mississippian of Kansas John H. Doveton

  2. Mississippian Play in Southern Kansas Gerlach, Sept. 2011 Spivey-Grabs Basil is the largest Mississippian oil field in Kansas with 69 million BO & 850 BCFG

  3. Spivey Grabs example: McCoy #1 Cornelius

  4. McCoy #1 Cornelius

  5. McCoy #1 Cornelius

  6. McCoy #1 Cornelius : Cyberlook

  7. McCoy #1 Cornelius High BVW : typical for commercial production in the Mississippi “Chat”

  8. The beginning of “Chat” petrophysics Jack Duran (Shell) 1960

  9. Duren (Shell) 1960: “Chat” core samples from Glick Field Porosity range: 30 – 50% Cementation exponent, m: Average: m =2.36(range: 2.24 – 2.73) Saturation exponent, n = 1.8

  10. McCoy #1 Cornelius PERFORATED 4370 – 4385 IPP 63.5 BOPD + 40 MCFGPD + 43% WTR

  11. More on “Chat” petrophysics Watney, Guy, and Byrnes (KGS) 2001

  12. Watney, Guy, and Byrnes (Bull. AAPG, 2001)

  13. General Atlantic #A1 Tjaden

  14. Watney, Guy, and Byrnes (Bull. AAPG, 2001)

  15. “Context petrofacies” in Tjaden : Lithofacies + position in cycle as related to paleoperched water table? Watney, Guy, and Byrnes (Bull. AAPG, 2001)

  16. General Atlantic #A1 Tjaden Conversion of m into a profile of non-connected porosity from Watfa-Nurmi equation

  17. THE WAY FORWARD? • Software : saturation-height function modeling • Hardware : more logging tools (NMR, EPT, ….)

  18. Duren (1960) Watney et al (2001) Capillary pressure curves

  19. HELPFUL ADDITIONAL LOGGING MEASUREMENTS? • Magnetic resonance (NMR/CMR/MRI) • Pore-body size distribution • Dielectric properties (EPT) • Water volume evaluation • - variable m

  20. KGS #1-32 Wellington

  21. Siliceous karst breccia (cave fill?) 3660- 3670 above siliceous dolomite

  22. KGS #1-32 Wellington : Match of core porosities with MRI effective porosities

  23. KGS #1-32 Wellington : Mississippian core porosities and grain densities

  24. a*[ ] 2 2 F k = nmr FFI BVI ( ) MRI estimation of permeability Timur-Coates equation FFI = Free fluid index BVI = Bulk volume irreducible Fnmr = FFI + BVI SDR equation b*[ ] ( ) 2 2 F k = logavT2 nmr

  25. KGS #1-32 Wellington : Prediction of permeability based on MRI porosity and SDR equation versus core Kmax, K90, and Kvert permeabilities

  26. KGS #1-32 Wellington: The Mississippian section

  27. PIERSON LIMESTONE : “Dark Cowley Facies” 3939-3975.6: medium dark gray; very argillaceous dolomitic siltstone; faintly laminated irregular; 30% silt; 3972-3973 cm-sized irregular calcareous nodules/coarse calcite; faint lenticular bedding alternating olive gray and medium dark gray 3975.6-3993: very dark greenish gray; shale; tight; dolomitic; around 20% silt; scattered black shale laminae; uniform; scattered pyrite; 3983 starts increasing silt; gradational contact 3927- 3939: olive gray, argillaceous dolomitic siltstone; 50% silt; wispy shale laminations; indistinct bedding; faint discontinuous laminations; gradational contact

  28. “The Pierson Formation”

  29. KIMELEON spectral GR image of the Pierson – addition ofthorium,uranium, andpotassium

  30. Moving northwards to Hodgeman County … Gerlach, Sept. 2011 The Bindley Field – Warsaw dolomites - 3.5 million barrels oil

  31. Radiation-Guard (RAG)logsfor Oasis #1 Deutsch,Bindley field, Hodgeman County, Kansas

  32. From Ebanks et al (1977)

  33. DRILL-STEM TESTS: DST #1: 4603 – 4641 480 feet GIP, recovered 3300 feet oil, no water DST #2: 4641 – 4694 60 feet GIP, recovered 690 feet very heavily oil & gas-cut muddy water, 60 feet oil-cut water, 60 feet water PRODUCTION Perforated: 4616 – 36 IP : 205 BOPD, No water

  34. Oasis #1 Deutsch NE-SE 33-21S-24W Hodgeman County, Kansas Summary of Meramec core (modified after Reed Johnson, 1990)

  35. Mississippian core porosities and permeabilities from Oasis #1 Deutsch NE-SE 33-21S-24W Hodgeman County, Kansas (modified after Reed Johnson, 1990)

  36. Stratigraphic cross-section of the Bindley Field perpendicular to the long-axis, with Oasis #1 at the center. The distribution of lithotypes dictates the flow-unit architecture (modified from Johnson and Budd, 1994)

  37. REFERENCES: Duren, J.D., 1960, Some petrophysical aspects of the Mississippian “Chat” Glick Field, Kiowa County, Kansas : The Shale Shaker, September, p. 316 –321. Watney, W.L., Guy, W.J., and Byrnes, A.J., 2001, Characterization of the Mississippian chat in south-central Kansas: AAPG Bulletin, v. 85, no. 1, p. 85 – 113. Ebanks, W.J., Jr., Euwer, R.M., and Nodine-Zeller, D.E., 1977, Mississippian Combination Trap, Bindley Field, Hodgeman County, Kansas : AAPG Bulletin, v. 61, no. 3, p. 309 – 330. Johnson, R.A., 2009, Distribution and Architecture of Subunconformity Carbonate Reservoirs: Lower Meramecian (Mississippian) Subcrop Trend, Western Kansas: Unconformity Controls 1994 Symposium : Rocky Mountain Association of Geologists, p. 231 – 244. Johnson, R.A., and Budd, D.A., 1994, The Utility of Continual Reservoir Description: An Example from Bindley Field, Western Kansas: AAPG Bulletin, v. 78, no. 5, p. 722 – 743.

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