Hydrocarbon Accumulation of Chang 8 Oil Layer in Zhenjing Area, Ordos Basin

Abstract

Abstract: Zhenjing block of Ordos Basin, located in the south of Tianhuan syncline, is the principal hydrocarbon area of SINOPEC. There is a good space-time correlation among lithologic traps formation time, hydrocarbon generation time and accumulation time in the area, which is favorable for lithologic reservoir formation. The dynamic accumulation process is mainly controlled by the tectonic evolution and trap evolution: Chang 8 layer was reversed from northeast sloping to southwest sloping. Reservoirs are subjected to adjustment, continuing migration from convex parts of sand body to the tectonic high points. According to trap evolution of pre-accumulation to current period, favorable traps are formed from Chang 8 layer, which is favorable for reserving and yielding oil and gas.

Key words: accumulation process, accumulation stage, dynamic accumulation, trap, Zhenjing block, Ordos Basin

CLC Number:

P618.13

Li Song, Yin Wei, Liu Zhen and Pan Gaofeng. Hydrocarbon Accumulation of Chang 8 Oil Layer in Zhenjing Area, Ordos Basin[J]. China Petroleum Exploration, 2011, 16(4): 23-28,36,3.

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Hydrocarbon Accumulation of Chang 8 Oil Layer in Zhenjing Area, Ordos Basin

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