Hydrocarbon setting in the onshore gulf of mexico
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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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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

2004 SIPES SEMINAR


Why this seminar

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


Aim of this talk

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


The big picture

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


End of paleozoic

END OF PALEOZOIC

2004 SIPES SEMINAR


Early mesozoic

EARLY MESOZOIC

2004 SIPES SEMINAR


Jura cretaceous

JURA-CRETACEOUS

2004 SIPES SEMINAR


Late cretaceous

LATE CRETACEOUS

2004 SIPES SEMINAR


Paleogene

PALEOGENE

2004 SIPES SEMINAR


Neogene

NEOGENE

2004 SIPES SEMINAR


Three focus areas

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


North rim smackover

North Rim - SMACKOVER

2004 SIPES SEMINAR


North rim haynesville

North Rim - HAYNESVILLE

2004 SIPES SEMINAR


North rim tithonian

North Rim - TITHONIAN

2004 SIPES SEMINAR


North rim berriasian

North Rim - BERRIASIAN

2004 SIPES SEMINAR


Lower rio grande border region

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


Tectonic map overview

TECTONIC MAP OVERVIEW

2004 SIPES SEMINAR


Crustal cross section

CRUSTAL CROSS SECTION

2004 SIPES SEMINAR


Paleozoic and triassic

Paleozoic andTriassic

2004 SIPES SEMINAR


Gulf opening

GULF OPENING

2004 SIPES SEMINAR


Border rift

BORDER RIFT

2004 SIPES SEMINAR


Kt subsidence and compression

KT Subsidence and Compression

2004 SIPES SEMINAR


Maver ick rio grande map

MAVER-ICK-RIO GRANDE MAP

2004 SIPES SEMINAR


Cenozoic uplift gravity gliding

Cenozoic Uplift & Gravity Gliding

2004 SIPES SEMINAR


Gulf coast map

GULF COAST MAP

2004 SIPES SEMINAR


Exploration possibilities

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


Tertiary seqstrat plays

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


Yegua plays

YEGUA PLAYS

2004 SIPES SEMINAR


Speculation on future onshore plays

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


Thanks

THANKS!

2004 SIPES SEMINAR


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