Effects of Tectonism on Hydrocarbon Accumulations

Abstract

Abstract: Petroleum reservoirs are generally formed in complex processes, which can be divided into pre-accumulation stage, syn- accumulation stage and post-accumulation stage. Pre-accumulation stage is a period of trap formation; syn-accumulation stage is hydrocarbon charging, entrapping and trap delineation period; post-accumulation trap and its hydrocarbons could be effected by various factors followed by resulting in a variety of changes or deformations, varying original characteristics of formed oil-gas reservoirs, even causing destruction of them. These significant tectonisms that could reform the reservoirs can be classified into faulting, compressive and tilting processes. The study shows that the integration of detailed structural analysis, lithology study and geochemical analysis of oil and gas is the essential tool for the study of tectonism on reconstruction of petroleum reservoirs.

Key words: petroleum reservoir, tectonism, faulting, trap, reconstruction, process

CLC Number:

TE111

DOU Li-rong, LI Zhi, ZHANG Bao-hong. Effects of Tectonism on Hydrocarbon Accumulations[J]. Xinjiang Petroleum Geology, 2003, 24(5): 396-399.

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