Ch. 7 quiz - Trap place where oil and gas are barred from...

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Trap – place where oil and gas are barred from further movement Five Essentials – source rock, heating, reservoir, seal, trap Pay – refers to the productive reservoir within the trap Gross Pay – vertical distance from the top of the reservoir to the petroleum/water contact Net Pay – cumulative vertical thickness of a reservoir from which petroleum may be produced Gross:net pay ratio – across the field it is an important parameter to the development of a reservoir Pool – connected body of hydrocarbons, which may contain one or more pay zones Crest (culmination) highest point of the trap Spill point – lowest point at which hydrocarbons may be contained in the trap Spill plane – horizontal contour for lowest point at which hydrocarbons may be contained Closure – vertical distance from crest to spill plane Bottom water – zone immediately beneath the petroleum Edge water – zone of reservoir laterally adjacent to the trap Monoclinal Dip – where dip is all in one direction Tar Mat – layer of heavy oil immediately above the bottom water Consists of thin (less than 1cm) stratiform accumulations of high molecular weight, asphaltenic/bituminous material which represents residual matter remaining after live oil has been degraded by some process such as stripping or biodegradation Impede flow of water into reservoir when petroleum is produced, causing compartmentalization Decreases permeability causing the OWC in a tilted reservoir not to adjust to a new horizontal datum o Cementation can continue in a reservoir beneath an oil zone causing the same
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This note was uploaded on 07/17/2011 for the course GEOL 4201 taught by Professor Staff during the Spring '10 term at Texas Tech.

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Ch. 7 quiz - Trap place where oil and gas are barred from...

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