Presentation is loading. Please wait.

Presentation is loading. Please wait.

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

Similar presentations


Presentation on theme: "Integration of Core and Log Petrophysics: Case Studies in the Mississippian of Kansas John H. Doveton."— Presentation transcript:

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

2

3

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

5 Spivey Grabs example: McCoy #1 Cornelius

6 McCoy #1 Cornelius

7

8 McCoy #1 Cornelius : Cyberlook

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

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 =2.36 (range: 2.24 – 2.73) Saturation exponent, n = 1.8

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

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)

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?) 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 a* [ ] k =  2 nmr ( ) FFI BVI 2 Timur-Coates equation FFI = Free fluid index BVI = Bulk volume irreducible  nmr = FFI + BVI SDR equation b* [ ] k =  2 nmr ( ) 2 logavT 2 MRI estimation of permeability

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 : olive gray, argillaceous dolomitic siltstone; 50% silt; wispy shale laminations; indistinct bedding; faint discontinuous laminations; gradational contact : 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 PIERSON LIMESTONE : “Dark Cowley Facies”

30 “The Pierson Formation”

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

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

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 – feet GIP, recovered 3300 feet oil, no water DST #2: 4641 – 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.

40


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

Similar presentations


Ads by Google