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HYDROCARBON SETTING IN THE ONSHORE GULF OF MEXICO

HYDROCARBON SETTING IN THE ONSHORE GULF OF MEXICO. What We Don’t Know , and… What We Can Find in a Mature World-Class Hydrocarbon Province. WHY THIS SEMINAR?. Onshore GOM A Mature Province ‘Written Off’ by Majors… well, sort of New Exploration needs New Ideas

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HYDROCARBON SETTING IN THE ONSHORE GULF OF MEXICO

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  1. HYDROCARBON SETTING IN THE ONSHORE GULF OF MEXICO What We Don’t Know , and… What We Can Find in a Mature World-Class Hydrocarbon Province 2004 SIPES SEMINAR

  2. WHY THIS SEMINAR? • Onshore GOM A Mature Province • ‘Written Off’ by Majors… well, sort of • New Exploration needs New Ideas • Better Exploring through Tectonics and Stratigraphy • But still, most HC found in existing fields • The Era of the ‘Develicat’ • Share Our Successes - our Failures - our Ideas! 2004 SIPES SEMINAR

  3. AIM OF THIS TALK • Take a Regional View of the Western and Central Gulf Coast Basin (Onshore Gulf of Mexico) • Set the Stage for others’ talks with ‘Big Picture’ • Focus on what we don’t know -- where the future plays may lie! 2004 SIPES SEMINAR

  4. THE BIG PICTURE • Mesozoic Rifting unstitches Paleozoic Assembling • Leaves High and Low Blocks; strike slip in South Texas, MAFLA, elsewhere? • Cretaceous Events: • Mexican Subsidence and Compression • Thermal Doming • Tertiary: Filling in the Gulf, with a Salt (and Shale) Cushion 2004 SIPES SEMINAR

  5. END OF PALEOZOIC 2004 SIPES SEMINAR

  6. EARLY MESOZOIC 2004 SIPES SEMINAR

  7. JURA-CRETACEOUS 2004 SIPES SEMINAR

  8. LATE CRETACEOUS 2004 SIPES SEMINAR

  9. PALEOGENE 2004 SIPES SEMINAR

  10. NEOGENE 2004 SIPES SEMINAR

  11. THREE FOCUS AREAS • Northern Gulf Rim - Jurassic & Cretaceous • Established clastic & carbonate plays • South Texas and the Border • Different Tectonics, different plays • Tertiary Shelf Margins • Middip, SMD and deep-water plays 2004 SIPES SEMINAR

  12. North Rim - SMACKOVER 2004 SIPES SEMINAR

  13. North Rim - HAYNESVILLE 2004 SIPES SEMINAR

  14. North Rim - TITHONIAN 2004 SIPES SEMINAR

  15. North Rim - BERRIASIAN 2004 SIPES SEMINAR

  16. LOWER RIO GRANDE BORDER REGION • Also known as “Rio Grande Embayment” • Junction of Gulf of Mexico & Cordillera • GM: TrJ Extension, subsidence, alkaline Kv, gravity tectonics • Cord: PTr arc, J transcurrent, JK extension, K subsidence, KT compression, Tv and T uplift • Shared stratigraphy since mid-Jurassic • Variety of hydrocarbon habitats 2004 SIPES SEMINAR

  17. TECTONIC MAP OVERVIEW 2004 SIPES SEMINAR

  18. CRUSTAL CROSS SECTION 2004 SIPES SEMINAR

  19. Paleozoic andTriassic 2004 SIPES SEMINAR

  20. GULF OPENING 2004 SIPES SEMINAR

  21. BORDER RIFT 2004 SIPES SEMINAR

  22. KT Subsidence and Compression 2004 SIPES SEMINAR

  23. MAVER-ICK-RIO GRANDE MAP 2004 SIPES SEMINAR

  24. Cenozoic Uplift & Gravity Gliding 2004 SIPES SEMINAR

  25. GULF COAST MAP 2004 SIPES SEMINAR

  26. EXPLORATION POSSIBILITIES • Masked mid-Jurassic structures • Transcurrent structures, rift valleys abound • Small crustal blocks may be found, with Jurassic carbonate shoals rimming them • Could affect subsequent salt movement • K subsidence • Migration NE from Mexican ‘hydrocarbon kitchens’ • Into basin-edge traps in South Texas • KT Burial • Eagle Ford maturity window shallows to SW • Salt tectonics • South Texas exploration is different from areas to east! 2004 SIPES SEMINAR

  27. TERTIARY - SEQSTRAT PLAYS • Shelf-margin deltas in growth-faulted environments • Classic (since 1950s), mostly mature • ‘Middip’ channel and shelf settings • Deepwater sands seaward of the shelf margin • Subsalt plays and tiered structures 2004 SIPES SEMINAR

  28. YEGUA PLAYS 2004 SIPES SEMINAR

  29. SPECULATION ON FUTURE ONSHORE PLAYS • Deep Water Fan Deposits increasingly important - J, K and T • Subsalt Play for Wilcox? • Renewed Focus on Source Rocks and Migration Pathways • Shallow Oil and Heavy Oil - a technological frontier • Life After Bright Spots 2004 SIPES SEMINAR

  30. THANKS! 2004 SIPES SEMINAR

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