Title: Hydrocarbon Accumulations in Marine SiliciclasticSequence Stratigraphic Framework
Abstract: istribution of hydrocarbon sources, reservoirs and seals is predictable within the sequence stratigraphic framework. Positions of reservoir sandbodies within a siliciclastic depositional sequence tend to determine play types. Shales deposited on the continental slope and in basinal areas during the sea level lowstand, on the shelf during marine transgressions and the maximum flooding, and in prodelta and offshore areas during the highstand, are potential sources and seals for hydrocarbons. Potential reservoirs include turbidite sandstones in basinfloor fans and slope fans, beach and deltaic sandstones in the prograding wedge, channel sandstones in incised valley fills, beach sandstones in the transgressive systems tract, and beach and deltaic sandstones in the highstand systems tract. There are seven potential play types within a type1 depositional sequence, these are: basinfloor fan, slope fan, incised valley fill, onlap, fault closure, updip pinch out, and erosional mound. These different types of plays can be incorporated into stratigraphic, lithology pinch out, and combination traps, Their distribution within the sequence is predictable. This provide the basis for predicting exploration targets using sequence stratigraphic concepts.
Publication Year: 1998
Publication Date: 1998-01-01
Language: en
Type: article
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