The Evaluation of Coal-Measure Source Rocks of Coal-bearing Basins in China and Their Hydrocarbon-Generating Models

Xiao Xianming; Liu Dehan; Fu Jiamo

Detailed research has been done on organic petrology and geochemistry of the coalmeasure source rocks sampled from typical coal basins in China. The following acknowlegements have been obtained:1) Coals can generate a large amount of gas as well as some liquid hydrocarbons during the thermal-maturation evolution. The source matter which can generate oil in coals includes not only exinite, but also desmocollinite and even a part of telocollinite.2) Coal macerals are the main parameters to evaluate the hydrocarbon potential of coalmeasure source rocks. According to the Rock-Eval and element analysis results,the coalmeasure source rocks can be subdivided into four types: c, Ⅱ c,Ⅲ c and Ⅳ c.Ⅰc and Ⅱ c can generate a large amount of oils and may form coal-generated oil and gas fields under the suitable geological background. However,type Ⅲ c and Ⅳ c can mainly generate gas.3) The hydrocar bon-generating patterns of coals mainly depend on the types and amount of hydrocabron-generating macerals. On the base of the hydrocarbon-generating patterns of coal macerals, the hydrocarbon-generating mdel for the four types of coal-measure source rocks has been suggested. This model will be very useful to the evaluation and exploration of coal-measure source rocks of coal-bearing basins in China.

Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640

Received Date: 1996-01-05

Publish Date: 1996-12-31

Key words:

Abstract: Detailed research has been done on organic petrology and geochemistry of the coalmeasure source rocks sampled from typical coal basins in China. The following acknowlegements have been obtained:1) Coals can generate a large amount of gas as well as some liquid hydrocarbons during the thermal-maturation evolution. The source matter which can generate oil in coals includes not only exinite, but also desmocollinite and even a part of telocollinite.2) Coal macerals are the main parameters to evaluate the hydrocarbon potential of coalmeasure source rocks. According to the Rock-Eval and element analysis results,the coalmeasure source rocks can be subdivided into four types: c, Ⅱ c,Ⅲ c and Ⅳ c.Ⅰc and Ⅱ c can generate a large amount of oils and may form coal-generated oil and gas fields under the suitable geological background. However,type Ⅲ c and Ⅳ c can mainly generate gas.3) The hydrocar bon-generating patterns of coals mainly depend on the types and amount of hydrocabron-generating macerals. On the base of the hydrocarbon-generating patterns of coal macerals, the hydrocarbon-generating mdel for the four types of coal-measure source rocks has been suggested. This model will be very useful to the evaluation and exploration of coal-measure source rocks of coal-bearing basins in China.

HTML

Reference (1)

[1]

1.黄第落等.中国吐t番盆地侏罗系煤系中烃类生成.第四届全国有机地球化学会议论文集，中国地质大学出版社，1990, 1-5.

2.傅家谨，刘德汉，盛国英主编.煤成烃地球化学.科学出版社，1990, 253-372.

3.刘德汉等.苏桥地区残殖煤的发现—兼论煤成气、煤成油的判识和我国煤成油的前景.地球化学，1985. (4):314-322.

4.肖贤明等.显徽组分成烃作用模式.科学通报，1991, (3): 208-211.

5.肖贤明著.有机岩石学及其在油气评价中的应用.广东科技出版社，1992, 105-112.

6.王飞宇等.我国东部晚古生代煤镜质组特征及成烃潜力研究.地球化学(待刊)，1995.

7.王铁冠等.树脂体成烃的地球化学研究—兼论我国第三系树脂体成因的未成熟一低成熟油气资源.江汉石油学院学报，1990, 12 (1): 1-2.

8.赵师庆，王飞宇，刘德汉，张惠之.不同煤相煤和镜质组产烃性质的研究.中国科学院地球化学研究所有机地球化学开放室研究年报(1988). 1990，科学出版社，128-137.

9.程克明.生油岩的定f评价.中国陆相油气生成，石油勘探开发研究院地质研究所主编，石油工业出版社，1982,135-188.

10.程克明主编.吐哈盆地油气生成.石油工业出版社，1994. 36-85.

11.Bernard P. Geochemical and petrographic characteristics of humic coals considered as possible oil source rocks. Org. Geochem, 1984. 16: 481-488.

12.Powell T G,et al. Petroleum source rock assessment in nonmarine sequences: pyrolysis and petrographic analysis of Australia coals.and Carbonaceous Shales. Org. Geochem. 1991，17 : 375-394.

13.Teichmuller M. Organic petrology of source rocks, history and state of the art. Org. Geochem, 1985. 10 (1-3): 581-589.

14.Thompson S, et al. Oil'generating coals. In: Petroleum Geochemistry Exploration of the Norwegian shop. NorwegianPetroleum Seciety. Gragam and Trotnans, 1985, 59-71.

15.Thomas B M. Land plant source rocks for oil and their significance in Australia Basins, APEA Journal, 22: 114-129.

The Evaluation of Coal-Measure Source Rocks of Coal-bearing Basins in China and Their Hydrocarbon-Generating Models

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Proportional views

Related