渤中凹陷古近系石南断层活动性及其对油气成藏条件的控制作用

doi:10.11743/ogg20120606

Abstract

Abstract:

The Paleogene in Shinan area of Bozhong depression is encountered by only a few wells,constraining the understanding of its source rock distribution,reservoir type and distribution,and hydrocarbon migration as well as reservoir types.Based on integration of 3D seismic,drilling,logging and laboratory data and in combination with sedimentary settings,we studied the features of acitivity of Shinan fault in the Paleogene in Bozhong Depression and discussed the relationship between fault activity and hydrocarbon accumulation by using fault slip rate method.The activity of the Shinan fault features in regular change pattern of"weak-strong-weak-strong-strong-weakest".It was the strongest during the deposition of the third member of Shahejie Fm and the 2^nd and 3^rd members of Dongying Fm when source rocks were developed.It was weak during the deposition of the 1^st and 2^nd members of Shahejie Fm and the 1^st member of Dongying Fm when reservoirs were developed.In addition,strong depression occurred during the deposition of the 2^nd member of Dongying Fm when relatively good reservoirs were developed in the large distal delta front deposits.Fault-anticline reservoirs and fault-lithologic reservoirs occur in locations with strong fault activity,while fault-lithologic reservoirs and lithologic reservoirs occur in places with weak fault activity.

Key words: reservoir distribution, oil and gas migration, faulting activity, Shinan fault, Paleogene, Bohai Bay Basin

CLC Number:

TE121.3

Wang Guanmin, Pang Xiaojun, Zhang Xuefang, Liu Zhanbo, Liu Boao. Activity of Shinan fault and its control on hydrocarbon accumulation in the Paleogene in Bozhong Depression[J]. Oil & Gas Geology, 2012, 33(6): 859-866.

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Activity of Shinan fault and its control on hydrocarbon accumulation in the Paleogene in Bozhong Depression

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