New Advances in the Research of Coal-derived Hydrocarbon from the Turpan-Hami Basin

CHENG Ke-ming; XIONG Ying; J M Moldowa; J Greene Todd

The correlation of crude oil and its source rocks in the Turpan- Hami basin is made based on the geochemical parameters，such as biomarkers and carbon isotopes The result shoWs that the crude oil from the Tupan-Hami basin can be classified into three.According to the analysis of biomarkers，the first type of oil referring an obvious fresh Water environment,lower content of algae，great influence of bacteria, high content of C₂₉sterane，low content of C₃₀4α- methylsterane high content of C₂₄tetracyclic and C₁₉trcyclic terpanes，and heavier carbon isotopes(δ¹³Cranges from -25 %to -27 %）.According to the correlation of crude oil and source rocks，the coal of Xishanyao For mation is the main source rock of the oil.The second type of oil is characterized by high content of algal substance(high content of C₂₇ and C₃₀4α-methylstrane)，and this kind of oil is possi bly fromthe lacustrine mudstone With abundant algae.The carbon isotope of the third type of oil ranges from -30 %to -32 %，and its biomarkers reflect that the source rock is a kind of anoxic and salty lacustrine sedi ments(Ithas high contents of gammacerane and $- phyllocladane，and high ratio of C₃₅/C₃₄hopanes.

1 Research Instiule of Petroleum Exploation and Development,Petrochina,Beijing,100083;

2 Geoscienes Department of Stanford University,USA

Received Date: 2001-11-10

Key words:

coal derived hydrocarbon /
multi-response monitoring of DS- MS analysis /
phyllocladane /
gammacerane

Abstract: The correlation of crude oil and its source rocks in the Turpan- Hami basin is made based on the geochemical parameters，such as biomarkers and carbon isotopes The result shoWs that the crude oil from the Tupan-Hami basin can be classified into three.According to the analysis of biomarkers，the first type of oil referring an obvious fresh Water environment,lower content of algae，great influence of bacteria, high content of C₂₉sterane，low content of C₃₀4α- methylsterane high content of C₂₄tetracyclic and C₁₉trcyclic terpanes，and heavier carbon isotopes(δ¹³Cranges from -25 %to -27 %）.According to the correlation of crude oil and source rocks，the coal of Xishanyao For mation is the main source rock of the oil.The second type of oil is characterized by high content of algal substance(high content of C₂₇ and C₃₀4α-methylstrane)，and this kind of oil is possi bly fromthe lacustrine mudstone With abundant algae.The carbon isotope of the third type of oil ranges from -30 %to -32 %，and its biomarkers reflect that the source rock is a kind of anoxic and salty lacustrine sedi ments(Ithas high contents of gammacerane and $- phyllocladane，and high ratio of C₃₅/C₃₄hopanes.

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Reference (4)

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[4]	张鹏飞,金奎励,吴涛,王昌桂.吐哈盆地含煤沉积与煤成油[M].北京:煤炭工业出版社,1997.[Zhang Pengfei,Jin Kuili,Wu Tao,Wang Changgui.Coalbearing sedimentary and coalderived oil of the Turpan-Humi basin[M].Beijing:Coal Industry Publishing House,1997]

[1]	1] 黄第藩,张大江,李晋超.中国吐鲁番盆地侏罗系煤系中烃类的生成[A].第四届全国有机地球化学会议论文集[C].武汉:中国地质大学出版社,1990.1～17[Huan Difan,Zhang Dajiang,Li Jinchao, et al.Generation of hydrocarbon from Jurassic coalbearing sequences in Tulufan basin of China[A].Proceedings of the fourth national symposium on organic geochemistry of China[C].Wuhan:China University of Geosciences Publishing House,1990.1～7]
[2]	程克明.吐哈盆地油气生成[M].北京:石油工业出版社,1994 [Cheng Keming.Hydrocarbon generation of the Turpan-Humi basin[M].Beijing:Petroleum Industry Publishing House,1994]
[3]	王昌桂,程克明,徐永昌,赵长毅.吐哈盆地侏罗系煤成烃地球化学[M].北京:科学出版社,1998 [Wang Changgui,Cheng Keming,Xu Yongchang,Zhao Changyi.Geocheistry of Jurassic coal-derived hydrocarbons of Turp-Humi[M]. Beijing:Science Press,1998]
[4]	张鹏飞,金奎励,吴涛,王昌桂.吐哈盆地含煤沉积与煤成油[M].北京:煤炭工业出版社,1997.[Zhang Pengfei,Jin Kuili,Wu Tao,Wang Changgui.Coalbearing sedimentary and coalderived oil of the Turpan-Humi basin[M].Beijing:Coal Industry Publishing House,1997]

New Advances in the Research of Coal-derived Hydrocarbon from the Turpan-Hami Basin

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