Characteristics and Mechanism of Low Permeability Clastic Reservoir in Chinese Petroliferous Basin

JIANG Ling zhi; GU Jia yu; GUO Bin cheng

Large amount of data are used to analyze the role of low permeability reservoir in petroleum explorationof China. There is no doubt that low permeability reservoir is the main field of petroleum exploration at present andin future whether in East China or West China. So we must pay full attention to the study on it.The characteris-tics of low permeability reservoir are summed up in the paper. They are thin sediment,low textural maturity andcompositional maturity,bad reservoir properties,low porosity and permeability,small pore throat size,great dif-ference of diagenesis,intense stress sensibility,developed fractures and strong heterogeneity. In view of thosecharacteristics,the authors analyze the mechanism of low permeability reservoir and think that sedimentary envi-ronment is the main cause,especially for the strata bearing coal near planation surface. In addition,diagenesis andtectonism are two of the main factors. The paper will play certain guidance and reference roles in the explorationand development of low permeability reservoir in the future.

The Research Institute of Petroleum Exploration and Development, CNPC, Beijing 100083

Received Date: 2002-10-17

Rev Recd Date: 2003-02-26

Publish Date: 2004-03-10

Key words:

Abstract: Large amount of data are used to analyze the role of low permeability reservoir in petroleum explorationof China. There is no doubt that low permeability reservoir is the main field of petroleum exploration at present andin future whether in East China or West China. So we must pay full attention to the study on it.The characteris-tics of low permeability reservoir are summed up in the paper. They are thin sediment,low textural maturity andcompositional maturity,bad reservoir properties,low porosity and permeability,small pore throat size,great dif-ference of diagenesis,intense stress sensibility,developed fractures and strong heterogeneity. In view of thosecharacteristics,the authors analyze the mechanism of low permeability reservoir and think that sedimentary envi-ronment is the main cause,especially for the strata bearing coal near planation surface. In addition,diagenesis andtectonism are two of the main factors. The paper will play certain guidance and reference roles in the explorationand development of low permeability reservoir in the future.

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Reference (13)

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Characteristics and Mechanism of Low Permeability Clastic Reservoir in Chinese Petroliferous Basin

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