Geological Characteristics and Hydrocarbon Accumulation Model for Cenozoic Play in Persian Gulf Basin

Abstract

Abstract: There are five hydrocarbon accumulation plays in Cenozoic in Persian Gulf basin, of which the Asmari?Gachsaran play is the most important one. The paleogeography evolution, hydrocarbon source rocks, reservoir rocks, cap rocks and hydrocarbon accumulation process are studied, showing that the Middle Cretaceous hydrocarbon source rock of Kazhdumi formation was deposited in low energy and euxinit environment, and reached hydrocarbon generating/expulsion peak in Early Pliocene. Oil and gas migrated vertically along fractures and finally accumulated in Oligocene?Lower Miocene Asmari fractured limestone reservoir. The Miocene Gachsaran formation provided an effective regional seal for the Oligocene?Lower Miocene Asmari reservoir. The oil and gas accumulation occurred in structural trap formed by lateral compression. The high quality source rocks, favorable reservoir rocks, fractures connecting the source rocks with reservoirs, effective regional/local seals, and the good matching between hydrocarbon generating peak and tectonic activity, fracture, trap forming time are the key of hydrocarbon enrichment in Asmari?Gachsaran play

CLC Number:

TE112.41

JIA Xiaole1, HE Dengfa1TONG Xiaoguang2. Geological Characteristics and Hydrocarbon Accumulation Model for Cenozoic Play in Persian Gulf Basin[J]. , 2014, 35(1): 1-1.

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Geological Characteristics and Hydrocarbon Accumulation Model for Cenozoic Play in Persian Gulf Basin

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