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

4. 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

5. Spivey Grabs example: McCoy #1 Cornelius

6. McCoy #1 Cornelius

7. McCoy #1 Cornelius

8. McCoy #1 Cornelius : Cyberlook

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

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

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

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

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

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

15. General Atlantic #A1 Tjaden

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

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

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

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

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

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

22. KGS #1-32 Wellington

23. Siliceous karst breccia (cave fill
Siliceous karst breccia (cave fill?) above siliceous dolomite

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

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

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

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

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

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

30. “The Pierson Formation”

31. KIMELEON spectral GR image of the Pierson – addition of thorium, uranium, and potassium

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

33. Radiation-Guard (RAG)logs for Oasis #1 Deutsch, Bindley field, Hodgeman County, Kansas

34. From Ebanks et al (1977)

35. 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

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

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

38. 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)

39. 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.