The formation mechanism of over-pressure reservoir and target screening index in south China marine shale

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  • (1.Langfang Branch,Research Institute of Petroleum Exploration and Development,PetroChina,Langfang 065007,China;
    2.National Energy Shale gas Research and Development Centre,Langfang 065007,China;
    3.Unconventional Oil and Gas Key Lab,PetroChina,Langfang 065007,China)

Received date: 2015-08-13

  Revised date: 2016-01-26

  Online published: 2016-03-10

Abstract

The marine strata in the south China are characterized by high maturity,and strong transformation of geology background.In this paper,combined with the typical overpressure shale gas reservoir characteristics analysis system,the authors investigate the shale gas overpressure characteristics and reservoir formation mechanism,and proposed a booster mechanism include overpressure,hot water booster,clay mineral dehydration,hydrocarbon charging.Jiaoshiba is a typical tectonic-induced overpressure shale gas reservoir and Changning is a typical hydrocarbon generation pressurization type.In this study,the structure characteristics of southern China is considered,and the formation pressure coefficient is considered as an important index into shale gas geological selection index system,which could fully reflect the characteristics of marine strata in southern China and increase the accuracy in shale gas geological area selection.

Cite this article

Liu Hong-lin,Wang Hong-yan,Sun Sha-sha,Lin Wen . The formation mechanism of over-pressure reservoir and target screening index in south China marine shale[J]. Natural Gas Geoscience, 2016 , 27(3) : 417 -422 . DOI: 10.11764/j.issn.1672-1926.2016.03.0417

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