Characteristics of Organic Petrology and Hydrocarbon-generating Potential of Wayaopu Coal Measures

YAO Su-ping; HU Wen-xuan; XUE Chun-yan; ZHANG Jing-rong; CAO Jian

Wayaopu coal formation is one of the most important coal formations and the earliest idea of oils from terrigenous deposit possibly origin ated from it. Based on the research results of the organic petrology and coal petrology, it is fromed to peat bog facies in deep underwater forest, the coals contain high-content liptinites, and the desmocollinites are the main type of vitrinite group of the coals and the desmocollinites have higher petroleum potential. Organic geochemistry shows that the kerogen type of WaYaoPu coal formations is Ⅱ, lower-middle maturity. The result of thermal simulation experiment on the coal shows that the coal has higher oil production, but it is difficult to form industrial oil-gas accumulation because of the low potential oil generating ability of the darker mudstones and the low maturity of the main macerals in the coal, and small scale and thin coal-beds of the coal in spite of its high potential oil generating ability.

The Department of Earth Science, Nanjing University,Nanjing 210093

Received Date: 2003-07-06

Rev Recd Date: 2003-10-21

Publish Date: 2004-09-10

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Abstract: Wayaopu coal formation is one of the most important coal formations and the earliest idea of oils from terrigenous deposit possibly origin ated from it. Based on the research results of the organic petrology and coal petrology, it is fromed to peat bog facies in deep underwater forest, the coals contain high-content liptinites, and the desmocollinites are the main type of vitrinite group of the coals and the desmocollinites have higher petroleum potential. Organic geochemistry shows that the kerogen type of WaYaoPu coal formations is Ⅱ, lower-middle maturity. The result of thermal simulation experiment on the coal shows that the coal has higher oil production, but it is difficult to form industrial oil-gas accumulation because of the low potential oil generating ability of the darker mudstones and the low maturity of the main macerals in the coal, and small scale and thin coal-beds of the coal in spite of its high potential oil generating ability.

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Reference (13)

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Characteristics of Organic Petrology and Hydrocarbon-generating Potential of Wayaopu Coal Measures

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