西湖凹陷平湖组不同煤系烃源岩热解生烃差异及其在油气勘探中的应用

doi:10.13278/j.cnki.jjuese.20190168

Abstract

Abstract: This study mainly focuses on different coal-measures source rocks (coal, carbon mudstone, and dark mudstone) in Pinghu Formation of Xihu sag. Based on the thermal simulation experiment of closed-system gold tube-high pressure vessels, the differences of hydrocarbon products, yield characteristics, and the hydrocarbon generation dynamics among the three coal series source rocks were analyzed. It is discovered that coal, carbon mudstone, and dark mudstone have high generation capacity of gas and liquid hydrocarbon, but their hydrocarbon generation evolution models are different. The carbonaceous mudstone has the earliest hydrocarbon generation and the highest intensity; the coal rock ranks the second in hydrocarbon generation and the hydrocarbon generation intensity; the mudstone has the latest hydrocarbon generation, and its hydrocarbon generation intensity is the lowest. According to the characteristics of pyrolysis hydrocarbon generation, Xihu sag has the potential of coal-derived oil exploration, and the western slope belt is a favorable area for oil exploration.

Key words: coal-measures source rocks, hydrocarbon generation characteristics, exploration revelation, Pinghu Formation, Xihu sag

CLC Number:

P624.4

Tan Sizhe, Hou Kaiwen, Qin Jun, Tang Rui, Yang Min. Differences in Pyrolysis Hydrocarbon Generation and Hydrocarbon Exploration of Different Coal-Measures Source Rocks in Pinghu Formation, Xihu Sag[J].Journal of Jilin University(Earth Science Edition), 2020, 50(4): 968-978.

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Differences in Pyrolysis Hydrocarbon Generation and Hydrocarbon Exploration of Different Coal-Measures Source Rocks in Pinghu Formation, Xihu Sag

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