Source-Rock Characterization and Main-Controlling Factors in the Northern Guaizihu Depression of Yin'e Basin

doi:10.3969/j.issn.1006-6535.2020.04.005

Abstract

Abstract: In order to enhance the hydrocarbon exploration level in the Guaizihu Depression and determine the effective source-rock distribution and controlling factors, the source-rock in the Well Wen1 was characterized and the corresponding main-controlling factors were analyzed by adopting organic geochemistry, sedimentary sequence and tectonic evolution analyses. Research indicates that the source-rock in the whole region shows a relatively low organic matter abundance due to the comprehensive influence of sedimentary sequence and structure. Highstand systems tract is favorable to the organic matter enrichment. The corresponding organic matter consists of sapropelic-humic and humic categories. The thermal evolution of organic matter shows a quite great difference. Muddy rock development can promote the early thermal evolution process, and the late structure uplift greatly shortens the local hydrocarbon generation time, so the organic matter maturity in this region is from immature to high mature. The source-rock distribution is greatly dependent on the faults and sedimentary evolution. This research could provide certain reference for the geological understanding of northern Guaizihu Depression.

Key words: source-rock, sedimentary sequence, tectonic evolution, controlling factor, reservoir property, Guaizihu Depression

CLC Number:

TE132

Jiang Hang, Zeng Deming, Liu Huchuang, Hei Wei, Pan Binfeng, Xie Xiaobin. Source-Rock Characterization and Main-Controlling Factors in the Northern Guaizihu Depression of Yin'e Basin[J]. Special Oil & Gas Reservoirs, 2020, 27(4): 33-40.

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