A STUDY ON THE SOURCE- RESERVOIR-SEAL ASSOCIATIONS AND MATCHING OF HYDROCARBON ACCUMULATION FACTORS IN THE FORELAND BASINS IN CENTRAL-WESTERN CHINA

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  • (Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China)

Received date: 2006-08-24

  Revised date: 2006-12-18

  Online published: 2008-06-20

Abstract

Structures in foreland basins form a specific geologic condition of hydrocarbon accumulation. The source-reservoir-seal associations are controlled by tectoni c and sedimentary evolvement. Sedimentary series and source-reservoir-seal ass ociations in the foreland basins in central-western China are various, affected by several times tectonization and the superposition of several types of origin al sedimentary basins. According to the sedimentary structure evolvement, three types of source-reservoir-seal associations are divided: Lower source-reservo ir-seal associations, Middle source-reservoir-seal associations and Upper res ervoir-seal associations. The type of self-generating and self-preserving res ervoir is mainly in the Lower and Middle source-reservoir-seal associations, b ecause of the superposed source-reservoir-seal rocks, and the Lower and Middle source-reservoir-seal associations have the best matching of space. The type of lower-generating and upper-reservoiring is mainly in the Upper reservoir-s eal associations, as it has the best matching of hydrocarbon generation stage, s andstone diagenesis stage and effective sealing time. The Upper reservoir-seal associations have the best matching of time, where a large number of oil-gas po ols have been discovered presently.

Cite this article

HONG Feng;SONG Yan;LIU Shao-bo;ZHAO Meng-jun;QIN Sheng-fei;FU guo-you . A STUDY ON THE SOURCE- RESERVOIR-SEAL ASSOCIATIONS AND MATCHING OF HYDROCARBON ACCUMULATION FACTORS IN THE FORELAND BASINS IN CENTRAL-WESTERN CHINA[J]. Natural Gas Geoscience, 2007 , 18(1) : 27 -31 . DOI: 10.11764/j.issn.1672-1926.2007.01.27

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