Petroleum Generation History of Lower Tertiary Source Rocks from the Bozhong Depression of the Bohaiwan Basin

GAO Xi-long; XIAO Xian-ming; ZHAO Bi-qing; LU Hong-you; TANG Yong-chun

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Article Navigation > Acta Sedimentologica Sinica > 2004 > 22(2): 359-364

GAO Xi-long, XIAO Xian-ming, ZHAO Bi-qing, LU Hong-you, TANG Yong-chun. Petroleum Generation History of Lower Tertiary Source Rocks from the Bozhong Depression of the Bohaiwan Basin[J]. Acta Sedimentologica Sinica, 2004, 22(2): 359-364.

Citation:

Petroleum Generation History of Lower Tertiary Source Rocks from the Bozhong Depression of the Bohaiwan Basin

1.
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640;
2.
California Institute of Technology, 21910 Currier RD, Walnut, CA61 769, USA

Received Date: 2003-05-12
Rev Recd Date: 2003-09-03
Publish Date: 2004-06-10

Abstract

There are mainly two sets of source rocks in the Bozhong Depression of the Bohaiwan Basin: Es 3 source rock and Ed 2 source rock. Since the source rocks in the most area of the depression are buried with a great depth, little work on petroleum generation pattern and history of the source rocks have been done. In this paper, a petroleum generation modeling method which is based on hydrocarbon generation kinetics was applied to investigate petroleum generation history of the source rocks from the depression center and the slope area. The results have shown that the Es ₃ source rock from the depression center was matured to the main stage of oil generation and the main stage of gas generation occurred over stage of 20～14 Ma and 15～10 Ma, respectively. The Ed ₂ source rock from the depression center passed its oil window during 10～5 Ma, and has a present maturation level of gas peak generation stage. In the slope area of the depression, the situation is quite different. The Es ₃ and Ed ₂ source rocks entered the main stage of oil generation during 10～5 my and after 2 my, respectively, and the current maturation level of the Es ₃ source rock is still in the main stage of gas generation. With the combination of reservoir-cap features, and trapping, migration and accumulation conditions in this depression, it was believed that the oil and gas pools discovered around and inside the depression was related to petroleum generation from the source rocks after 10 my, and the source areas include Es ₃ source rocks from the slope area and Ed ₂ source rock throughout the depression. The Es ₃ source rock from the depression center has a contribution to natural gas accumulation in oil and gas pools.
- Bozhong Depression,
- source rock,
- hydrocarbon generation kinetics,
- petroleum generation history

References

[1]	中国石油地质志编委会. 中国石油地质志,第十六卷(上册). 北京:石油工业出版社, 1990. 32～161[Editional Committee of Petroleum Geology of China. Petroleum Geology of China. Vol.16. Beijing: Petroleum Industrial Press, 1990.32～161]
[2]	龚再生. 中国近海大油气田. 北京:石油工业出版社,1997. 1～66[Gong Zaisheng. Large Scale of Oil and Gas Fields, Offshore of China. Beijing: Petroleum Industrial Press,1997.1～66]
[3]	Ritter U K, Myhr M B, Vinge T, et al. Experimental heating and kinetic models of source rocks: comparison of different methods. Organic Geochemistry, 1995, 23 : 1～9
[4]	Ungger P, Pelet R. Extrapolation of the kinetics of oil and gas formation from laboratory experiments to sedimentary basins. Nature, 1987,327:52～54
[5]	Ungerer P. State of the art of research in kinetics modeling of oil formation and expulsion, Organic Geochemistry, 1990,16(1-3 ):1～25
[6]	Tang Y, Stauffer M. Multiple cold trap pyrolysis gas chrmatography: a new technique for modeling hydrocarbon generation. Organic Geochemistry, 1993,22(3-5 ):863～972
[7]	王建宝, 肖贤明, 郭汝泰, 等. 渤海湾盆地东营凹陷烃源岩生烃动力学研究. 石油实验地质, 2003,25(4):403～409[Wang Jianbao, Xiao Xianming, Guo Rutai, et al. Study on hydrocarbon generation kinetics of source rocks from the Bohaiwan Basin. Experimental Petroleum Geology,2003,25(4):403～409]
[8]	Tang Y, Perry J, Jenden P D, et al. Mathematical modeling of stable carbon isotope ratios in natural gases. Geochimica et Cosmochimica Acta, 2000, 64 (15): 2673～2687
[9]	高喜龙, 肖贤明, 王建宝,等. 用开放体系的热解方法对烃源岩生烃动力学的研究--以东营凹陷某生油岩为例. 地球化学, 2003,32(5):485～490[Gao Xilong, Xiao Xianming, Wang Jianbao, et al.Hydrocarbon generation kinetics of source rocks in open system based on pyrolysis simulation experiment: A case study of the Dongying Depression, Geochemistry,2003,32(5):485～490]
[10]	Pepper A S, Corvit P J. Simple kinetic models of petroleum formation. Marine and Petroleum Geology, 1995,12(30 ): 291～319
[11]	米立军. 新构造运动与渤海海域上第三系大型油气田. 中国海上油气(地质),2001,15(1): 21～28[Mi Lijun, New tectonics movement and large scale of oil and gas fields from Bohaiwan offshore Basin. China Offshore Oil and Gas(Geology),2001,15(1):21～28]
[12]	廖永胜,才巨宏,刘慧民, 等,油气运聚系统的地球化学研究. 见:杜贤樾主编.胜利油区勘探开发论文集. 北京: 地质出版社, 1997,104～120[Liao Yongsheng, Cai Juhong, Liu Huimin, et al.A geochemical investigation of petroleum migration and accumulation system. In: Du Xianyne, ed. Paper Collection of Shangli Oilfield Exploration and Development. Beijing: Geological Publishing House,1997,104～120]
[13]	杨风丽,周祖翼,王永诗, 等. 埕岛大油田形成机理与油气成藏模式. 勘探家,2001, 5(4):16～18[Yang Fengli, Zhou Zhuyi, Wang Yongshi. Petroleum pool formation mechanism and model of Chendao largo oilfield. Petroleum Explorationist, 2001,5(4):16～18]
[14]	杨风丽,周祖翼,廖永胜. 埕岛复杂油气田的油气运聚系统分析. 同济大学学报,2001,29(7):238～245[Yang Fengli, Zhou Zhuyi, Liao Yongsheng. Analysis of petroleum migrationa nd accumulation system of the Chendao Oilfels. Tongji University Bulletin, 2001,29(7):238～245]

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Petroleum Generation History of Lower Tertiary Source Rocks from the Bozhong Depression of the Bohaiwan Basin

1. State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640;

2. California Institute of Technology, 21910 Currier RD, Walnut, CA61 769, USA

Received Date: 2003-05-12

Rev Recd Date: 2003-09-03

Publish Date: 2004-06-10

Key words:

Abstract: There are mainly two sets of source rocks in the Bozhong Depression of the Bohaiwan Basin: Es 3 source rock and Ed 2 source rock. Since the source rocks in the most area of the depression are buried with a great depth, little work on petroleum generation pattern and history of the source rocks have been done. In this paper, a petroleum generation modeling method which is based on hydrocarbon generation kinetics was applied to investigate petroleum generation history of the source rocks from the depression center and the slope area. The results have shown that the Es ₃ source rock from the depression center was matured to the main stage of oil generation and the main stage of gas generation occurred over stage of 20～14 Ma and 15～10 Ma, respectively. The Ed ₂ source rock from the depression center passed its oil window during 10～5 Ma, and has a present maturation level of gas peak generation stage. In the slope area of the depression, the situation is quite different. The Es ₃ and Ed ₂ source rocks entered the main stage of oil generation during 10～5 my and after 2 my, respectively, and the current maturation level of the Es ₃ source rock is still in the main stage of gas generation. With the combination of reservoir-cap features, and trapping, migration and accumulation conditions in this depression, it was believed that the oil and gas pools discovered around and inside the depression was related to petroleum generation from the source rocks after 10 my, and the source areas include Es ₃ source rocks from the slope area and Ed ₂ source rock throughout the depression. The Es ₃ source rock from the depression center has a contribution to natural gas accumulation in oil and gas pools.

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Reference (14)

[1]	中国石油地质志编委会. 中国石油地质志,第十六卷(上册). 北京:石油工业出版社, 1990. 32～161[Editional Committee of Petroleum Geology of China. Petroleum Geology of China. Vol.16. Beijing: Petroleum Industrial Press, 1990.32～161]
[2]	龚再生. 中国近海大油气田. 北京:石油工业出版社,1997. 1～66[Gong Zaisheng. Large Scale of Oil and Gas Fields, Offshore of China. Beijing: Petroleum Industrial Press,1997.1～66]
[3]	Ritter U K, Myhr M B, Vinge T, et al. Experimental heating and kinetic models of source rocks: comparison of different methods. Organic Geochemistry, 1995, 23 : 1～9
[4]	Ungger P, Pelet R. Extrapolation of the kinetics of oil and gas formation from laboratory experiments to sedimentary basins. Nature, 1987,327:52～54
[5]	Ungerer P. State of the art of research in kinetics modeling of oil formation and expulsion, Organic Geochemistry, 1990,16(1-3 ):1～25
[6]	Tang Y, Stauffer M. Multiple cold trap pyrolysis gas chrmatography: a new technique for modeling hydrocarbon generation. Organic Geochemistry, 1993,22(3-5 ):863～972
[7]	王建宝, 肖贤明, 郭汝泰, 等. 渤海湾盆地东营凹陷烃源岩生烃动力学研究. 石油实验地质, 2003,25(4):403～409[Wang Jianbao, Xiao Xianming, Guo Rutai, et al. Study on hydrocarbon generation kinetics of source rocks from the Bohaiwan Basin. Experimental Petroleum Geology,2003,25(4):403～409]
[8]	Tang Y, Perry J, Jenden P D, et al. Mathematical modeling of stable carbon isotope ratios in natural gases. Geochimica et Cosmochimica Acta, 2000, 64 (15): 2673～2687
[9]	高喜龙, 肖贤明, 王建宝,等. 用开放体系的热解方法对烃源岩生烃动力学的研究--以东营凹陷某生油岩为例. 地球化学, 2003,32(5):485～490[Gao Xilong, Xiao Xianming, Wang Jianbao, et al.Hydrocarbon generation kinetics of source rocks in open system based on pyrolysis simulation experiment: A case study of the Dongying Depression, Geochemistry,2003,32(5):485～490]
[10]	Pepper A S, Corvit P J. Simple kinetic models of petroleum formation. Marine and Petroleum Geology, 1995,12(30 ): 291～319
[11]	米立军. 新构造运动与渤海海域上第三系大型油气田. 中国海上油气(地质),2001,15(1): 21～28[Mi Lijun, New tectonics movement and large scale of oil and gas fields from Bohaiwan offshore Basin. China Offshore Oil and Gas(Geology),2001,15(1):21～28]
[12]	廖永胜,才巨宏,刘慧民, 等,油气运聚系统的地球化学研究. 见:杜贤樾主编.胜利油区勘探开发论文集. 北京: 地质出版社, 1997,104～120[Liao Yongsheng, Cai Juhong, Liu Huimin, et al.A geochemical investigation of petroleum migration and accumulation system. In: Du Xianyne, ed. Paper Collection of Shangli Oilfield Exploration and Development. Beijing: Geological Publishing House,1997,104～120]
[13]	杨风丽,周祖翼,王永诗, 等. 埕岛大油田形成机理与油气成藏模式. 勘探家,2001, 5(4):16～18[Yang Fengli, Zhou Zhuyi, Wang Yongshi. Petroleum pool formation mechanism and model of Chendao largo oilfield. Petroleum Explorationist, 2001,5(4):16～18]
[14]	杨风丽,周祖翼,廖永胜. 埕岛复杂油气田的油气运聚系统分析. 同济大学学报,2001,29(7):238～245[Yang Fengli, Zhou Zhuyi, Liao Yongsheng. Analysis of petroleum migrationa nd accumulation system of the Chendao Oilfels. Tongji University Bulletin, 2001,29(7):238～245]

Petroleum Generation History of Lower Tertiary Source Rocks from the Bozhong Depression of the Bohaiwan Basin

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