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San Andres Formation: Outcrop to Subsurface Stratigraphic Framework

San Andres Formation: Outcrop to Subsurface Stratigraphic Framework. Charlie Kerans Department of Geological Sciences John A. and Katherine G. Jackson School of Geosciences The University of Texas at Austin. Acknowledgements. Jerry Lucia, mentor

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San Andres Formation: Outcrop to Subsurface Stratigraphic Framework

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  1. San Andres Formation:Outcrop to Subsurface Stratigraphic Framework Charlie Kerans Department of Geological Sciences John A. and Katherine G. Jackson School of Geosciences The University of Texas at Austin

  2. Acknowledgements • Jerry Lucia, mentor • Colleagues on San Andres – Tinker, Ruppel, Gardner, Fitchen, Nance • WTGS/PBS-SEPM/Midland Geological Community - Al Smith, Bob Ward, Bob Trentham, Emily Stoudt, University Lands Group C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  3. Outline • Develop Outcrop Model • Discuss Current San Andres Plays • Propose more stratigraphically based play model for San Andres Fields using outcrop model • Illustrate examples from Vacuum, Slaughter, Wasson, Seminole, Hobbs, and Midland Farms fields • Propose representative heterogeneity styles for San Andres stratigraphically-based plays C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  4. Outcrop to Subsurface – Google It! Northwest Shelf Delaware Basin Capitan G28 Margin San Andres G9 Margin LCC C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  5. Outcrop Model Rio Hondo Rio Penasco Algerita Escarpment Brokeoff Mts, LCC Western Escarp. Anhydrite and anhydritic dolostone Restricted marine peloidal wk-pk and peritidal High-energy ramp-crest grainstones Outer ramp fusulinid-dominated facies Open marine limestones and dolostones, L7-8 Deeper-water mudstones (Cutoff) C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  6. Permian Basin Plays,Dutton et al (2005) C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  7. Stratigraphic Terminology Modified after Kerans, 2000, Trentram and Smith, 2002 C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  8. Hierarchy of Composite/High-Frequency Sequences for Late Leonardian-Guadalupian C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  9. Classification of San Andres Reservoirs on basis of StratigraphicSetting 1 1 2 3 2 4 1b 5 3 • L7-8-G1-2 interc. dolo-evap • 1b. L7-L8, G1? Open shelf and buildups • 2. Cyclic G1-4 • 3. Stacked G8-9 and Gbg G10 • 4. Karst-modified, anhydrite-free G8-9 • 5. Oolitic Grayburg lowstand G10 4 C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  10. San Andres Reservoir Settings Vacuum, Gbg-Jk Maljamaar Wasson, Seminole, Goldsmith Yates, Hobbs 3 2 4 Mabee, Mid. Fms Brahaney 5 Slaughter 1 Levelland 1b Howard-Glasscock, Holt, SA Deep Anhydrite and anhydritic dolostone Restricted marine peloidal wk-pk and peritidal High-energy ramp-crest grainstones Outer ramp fusulinid-dominated facies Open marine limestones and dolostones, L7-8 Deeper-water mudstones (Cutoff) C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  11. San Andres Play Types C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  12. San Andres Play Types byStratigraphic Setting C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  13. Classification of San Andres Reservoirs on basis of StratigraphicSetting 1 1 2 3 2 4 1b 5 3 • L7-8-G1-2 interc. dolo-evap • 1b. L7-L8, G1? Open shelf and buildups • 2. Cyclic G1-4 • 3. Stacked G8-9 and Gbg G10 • 4. Karst-modified, anhydrite-free G8-9 • 5. Oolitic Grayburg lowstand 4 C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  14. Location of Profiles Slaughter Wasson Vacuum Seminole Hobbs Cowden-M.F. outcrop C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  15. West to East Margin/ProgradationPatterns – Ancestral Rockies Pattern? C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  16. Permian Basin Setting withinAncestral Rocky Mt. SW-NE Compression Ye et al. (19960 C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  17. Wolfcamp-Leonardian-GuadalupianOutcrop Model and Position of ShelfMargins G4 G9 L7,8 L3 L6 L1 C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  18. Leonardian-Guadalupian Margins,Outcrop Profile – Western Escarpment C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  19. Leonardian-Guadalupian Margins,Outcrop Profile – Cutoff Ridge Top G9 Top G8 C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  20. Location of Profiles – SlaughterType 1 Slaughter Wasson Vacuum Seminole Hobbs Cowden-M.F. outcrop C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  21. San Andres Reservoir Settings Vacuum, Gbg-Jk Maljamaar Wasson, Seminole, Goldsmith Yates, Hobbs 3 2 4 Mabee, Mid. Fms Brahaney 5 Slaughter 1 Levelland 1b Howard-Glasscock, Holt, SA Deep Anhydrite and anhydritic dolostone Restricted marine peloidal wk-pk and peritidal High-energy ramp-crest grainstones Outer ramp fusulinid-dominated facies Open marine limestones and dolostones, L7-8 Deeper-water mudstones (Cutoff) C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  22. Dip Log Line near Vacuum Silver And Todd (1969) C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  23. Vacuum Dip Seismic Profile showingStacked CS8 and CS9 margins Pranter et al. (2004) C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  24. Facies/Cycle StackingCS9 Upper San Andres Composite Seq. G9 HFS, CS10 HSS G8 HFS, CS10 TSS C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  25. Location of Profiles – SlaughterType 1 Slaughter Wasson Vacuum Seminole Hobbs Cowden-M.F. outcrop C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  26. Reservoir Style and StratigraphicSetting – Note Difference in Shelf Margins 1 2 3 2 4 3 1b 5 3 2 C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  27. San Andres Reservoir Settings Vacuum, Gbg-Jk Maljamaar Wasson, Seminole, Goldsmith Yates, Hobbs 3 2 4 Mabee, Mid. Fms Brahaney 5 Slaughter 1 Levelland 1b Howard-Glasscock, Holt, SA Deep Anhydrite and anhydritic dolostone Restricted marine peloidal wk-pk and peritidal High-energy ramp-crest grainstones Outer ramp fusulinid-dominated facies Open marine limestones and dolostones, L7-8 Deeper-water mudstones (Cutoff) C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  28. Slaughter-Levelland TrendL7, L8, G1, G2? C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  29. Slaughter-Levelland TrendL7, L8, G1, G2? G9 G4, G8 G3 G2 G1 L8 C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  30. Location of Profiles – Wasson/Seminole - Type 2 Slaughter Wasson Vacuum Seminole Hobbs Cowden-M.F. outcrop C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  31. Reservoir Style and StratigraphicSetting 1 2 3 2 3 C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  32. San Andres Reservoir Settings Vacuum, Gbg-Jk Maljamaar Wasson, Seminole, Goldsmith Yates, Hobbs 3 2 4 Mabee, Mid. Fms Brahaney 5 Slaughter 1 Levelland 1b Howard-Glasscock, Holt, SA Deep Anhydrite and anhydritic dolostone Restricted marine peloidal wk-pk and peritidal High-energy ramp-crest grainstones Outer ramp fusulinid-dominated facies Open marine limestones and dolostones, L7-8 Deeper-water mudstones (Cutoff) C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  33. Wasson San Andres Setting WNW ESE Wasson C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  34. Wasson Original Layering C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  35. Wasson Porosity Zones C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  36. Location of Profiles – Wasson/Seminole - Type 2 Slaughter Wasson Vacuum Seminole Hobbs Cowden-M.F. outcrop C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  37. C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  38. SSAU Core Example HFC Structure C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  39. San Andres Fields, Permian BasinPaleogeography of Ward et al (1986) Modified from Ward et al (1985) by Scholle 2005 C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  40. Location of Profiles – Wasson/Seminole - Type 2 Slaughter Wasson Vacuum Seminole Hobbs Cowden-M.F. outcrop C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  41. San Andres Reservoir Settings Vacuum, Gbg-Jk Maljamaar Wasson, Seminole, Goldsmith Yates, Hobbs 3 2 4 Mabee, Mid. Fms Brahaney 5 Slaughter 1 Levelland 1b Howard-Glasscock, Holt, SA Deep Anhydrite and anhydritic dolostone Restricted marine peloidal wk-pk and peritidal High-energy ramp-crest grainstones Outer ramp fusulinid-dominated facies Open marine limestones and dolostones, L7-8 Deeper-water mudstones (Cutoff) C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  42. 3D Seismic Volume - Hobbs • Hobbs paleostructure influences • San Andres margin position • Paleostructure assumed responsible for • Enhanced top-SA karst NW SE C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  43. San Andres-Grayburg ContactCutoff Ridge, Guadalupe Mountains Upper Gbg Lower Gbg U. San Andres G9 Top G8 C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  44. San Andres-Grayburg ContactCutoff Ridge, Guadalupe Mountains NHU 29-132 Upper Gbg Lower Gbg U. San Andres G9 Top G8 C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  45. NW-SE Line Thru 24-424 C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  46. NS Line showing LSA and USAArchitecture C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  47. Hobbs Field, CS9 TSS (G8HFS) 3Ea 3H? 3F 3G C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  48. Hobbs Field CS9 HSS (G9 HFS) 1A 1B 2C 2D 3E C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  49. Upper San Andres Karst Development – Top G8 and G9 C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX

  50. Confined vs. Diffuse Karst Model Confined Karst Model Diffuse Karst Model C. Kerans, Bureau of Economic Geology, PBGSP Annual Meeting,2/27-8/06, Austin, TX Modified from Meyers (1988)

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