Traps - Reef (a small patch reef) U NCONFORMITY U...

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TRAPS Dr. Tom Rowland ConocoPhillips School of Geology and Geophysics The University of Oklahoma
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OUTLINE Depositional Environments as relating traps Structural-types of structures, anticlines, faults, etc Stratigraphic, facies changes, etc.
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SEDIMENTARY ENVIROMENTS
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TRAP TYPES STRUCTURAL STRATIGRAPHIC OTHER
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STRUCTURAL Petroleum Accumulates in Structural Closure Anticline GAS OIL Offset of rocks such that oil and gas accumulates in reservoir rocks Fault GAS OIL Thrust Fault Normal Fault
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STRATIGRAPHIC Rock layers changing from a good reservoir to non-reservoir due to change in rock type (pinch out), reservoir quality (diagenesis), or removal (erosional unconformity) Erosional Surface Sandstone Lenses Salt Dome Erosional Surface + Structural Sandstone pinch-out
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Unformatted text preview: Reef (a small patch reef) U NCONFORMITY U NCONFORMITY STRUCTURAL Simple Anticline GAS OIL WATER WATER Oil Water Contact Oil Water Contact WHERE TO DRILL??? STRUCTURAL Simple Anticline GAS OIL WATER WATER Oil Water Contact Oil Water Contact I LOVE ROCKS!!! I LOVE MY CALCULATOR!!! STRUCTURAL Simple Anticline GAS OIL WATER WATER Oil Water Contact Oil Water Contact STRUCTURAL Anticlines in a map A A A A STRUCTURAL Anticlines in a map A MINOR Fault Complication The darkened circles delineate the intersection of each structure contour with the fault contour of the same elevation. Fault gap denotes the faults displacement Fault gap A MAJOR Fault Complication...
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Traps - Reef (a small patch reef) U NCONFORMITY U...

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