库车坳陷煤成甲烷碳同位素动力学研究

doi:10.11743/ogg20040104

Abstract

Abstract:

The characteristics and kinetic modeling of carbon isotope of methane in Jurassic humic gas in Kuqa depression in Tarim basin have been studied by combining pyrolysis experiment in closed gold tube system and analysis of methane isotope with GC-IRMS isotope mass spectrograph.The carbon isotope ranges between -3.6%～-2.5% and is closely related to pyrolysis temperature (or vitrinite reflectance Ro) and heating rate. Kinetic simulation results of carbon isotope in humic gas methane are in good agreement with the experimental data, thus the experimental data can be extrapolated through kinetic modeling and applied to actual geological conditions. Simulation results show that natural gas in Kela 2gas field in Kuqa depression has mainly experienced episodic accumulation since 10 Ma (especially 5 Ma).

Key words: humic gas methane, pyrolysis experiment, carbon isotope, kinetic modeling, origin of natural gas, Kuqa depression

CLC Number:

TE112.1

Li Xianqing, Xiao Xianming, Tang Y, Mi Jingkui, Shen Jiagui, Xiao Zhongyao, Bao Jianping, Xiong Bo. Kinetic study of carbon isotope in humic gas methane in Kuqa depression[J]. Oil & Gas Geology, 2004, 25(1): 21-25.

References

[1] Stahl J W,Carey B D. Source-rock identification by isotope analyses of natural gases from fields in the Val Verde and Delaware Basins, West Texas[J]. Chem Geol,1975,16:257～267
[2] Stahl J W,Boigk H,Wollanke G.Carbon and nitrogen isotope data of Upper Carboniferous and Rotliegend natural gases from North Germany and their relationship to the maturity of the organic source material[J]. Advances in Organic Geochemistry, 1977,3:539～559
[3] 戴金星,戚厚发. 我国煤成气的δ¹³C-R_o关系[J].科学通报,1989,34(9):690～692
[4] 戴金星.各类烷烃气的鉴别[J].中国科学(B辑),1992,34(2):185～193
[5] 徐永昌,沈平. 中原-华北油气区"煤型气"地球化学特征初探[J]. 沉积学报,1985,3(2):37～46
[6] Galimov E. Sources and mechanisms of formation of gaseous hydrocarbons in sedimentary rocks[J]. Chem Geol, 1988, 71:77～95
[7] Clayton C. Carbon isotope fractionation during natural gas generation from kerogen[J]. Mar Petrol Geol, 1991,8:232～240
[8] Berner U, Faber E,Stahl W.Mathematical simulation of the carbon isotopic fractionation between huminitic coals and related methane[J].Chem Geol,1992,94:315～319
[9] Berner U, Faber E,Scheeder G,et al. Primary cracking of algal and land plant kerogens:kinetic modeling of kerogen and oil cracking[J].Chem Geol,1995,126:233～245
[10] Rooney M A, Claypool G E, Chung H M. Modeling thermogenic gas generation using carbon isotope ratios of natural gas hydrocarbons[J].Chem Geol,1995, 126: 219～232
[11] Cramer B, Krooss B M,Littke R. Modeling isotope fractionation during primary cracking of natural gas:a reaction kinetic approach[J]. Chem Geol,1998,149:235～250
[12] Tang Y, Perry J K, Jenden P D,et al. Mathematical modeling of stable carbon isotope ratios in natural gases[J]. Geochimica et Cosmochimica Acta, 2000, 64 (15): 2673～2687
[13] Cramer B, Faber E,Gerling P,et al. Reaction kinetics of stable carbon isotopes in natural gas-insights from dry,open system pyrolysis experiments[J].Energy & Fuels,2001,15:517～532
[14] 王飞宇,张水昌,张宝民,等.塔里木盆地库车坳陷中生界源岩有机质成熟度[J].新疆石油地质,1999,20(3):221～224
[15] 梁狄刚,张水昌,陈建平,等.库车坳陷成藏地球化学[A].见:梁狄刚,黄第藩,马新华,等.有机地球化学研究新进展:第八届全国有机地球化学学术会议论文集[C].北京:石油工业出版社,2002.22～39
[16] 贾承造,秦胜飞,李启明. 塔里木盆地库车拗陷油气的形成与分布[A].见:戴金星,傅诚德.煤成烃国际学术研讨会论文集[C].北京:石油工业出版社,2000. 176～190
[17] 赵孟军,卢双舫,李剑. 库车油气系统天然气地球化学特征及气源探讨[J].石油勘探与开发,2002, 29(6):4～7
[18] 赵孟军,卢双舫,王庭栋,等.克拉2气田天然气地球化学特征与成藏过程[J].科学通报,2002,47(增刊):109～115
[19] 汪新文,陈发景,李光.塔北库车坳陷的变形特征及其与油气关系[J].石油与天然气地质,1994,15(1):40～50
[20] 刘志宏,户华复,贾承造,等.库车再生前陆盆地的构造与油气[J].石油与天然气地质,2001,22(4):297～303

Kinetic study of carbon isotope in humic gas methane in Kuqa depression

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

[1]	Daxiang He, Youjun Tang, Jinjie Hu, Shaowu Mo, Jianfa Chen. Geochemical characteristics of noble gases in natural gases from the Tarim Basin [J]. Oil & Gas Geology, 2020, 41(4): 755-762.
[2]	Sun Shuai, Hou Guiting. Analysis of conceptual models for the influence of rock mechanics on tensile zone in faulted anticlines [J]. Oil & Gas Geology, 2020, 41(3): 455-462.
[3]	Feng Jianwei, Sun Jianfang, Zhang Yajun, Dai Junsheng, Wei Hehua, Quan Lianshun, Ren Qiqiang, Zhao Libin. Control of fault-related folds on fracture development in Kuqa Depression,Tarim Basin [J]. Oil & Gas Geology, 2020, 41(3): 543-557.
[4]	Peng Wang, Linghui Sun, He Wang, Zi'an Li. Microscopic pore structure of Ahe tight sand gas reservoirs of the Low Jurassic in Kuqa Depression and its controls on tight gas enrichment [J]. Oil & Gas Geology, 2020, 41(2): 295-304.
[5]	Wang Yuhan, Ding Weiming, Liu Xuan, Wei Ren, Dong Lin. Lithofacies and causal mechanism of organic matter enrichment in the lower submember of the 3rd member of Shahejie Formation, Bonan Sag,Bohai Bay Basin [J]. Oil & Gas Geology, 2019, 40(5): 1106-1114.
[6]	Du Hongquan, Wang Wei, Shi zhiqiang, Tan Jiankang, Cao Huanyu, Yin Xuefeng. Geochemical characteristics and source of natural gas of the Upper Triassic Xujiahe Formation in Malubei area,northeastern Sichuan Basin [J]. Oil & Gas Geology, 2019, 40(1): 34-40.
[7]	Su Zhou, Zhang Huifang, Han Jianfa, Liu Yongfu, Sun Qi, Bai Yin, Duan Yunjiang, Qu Yang. Origin and controlling factors of Mesozoic-Cenozoic gas condensates with high wax content and high-gravity oil in Kuqa Depression [J]. Oil & Gas Geology, 2018, 39(6): 1255-1269.
[8]	Wang Ke, Yang Haijun, Zhang Huiliang, Li Yong, Zhang Ronghu, Yang Xuejun, Wang Junpeng. Characteristics and effectiveness of structural fractures in ultra-deep tight sandstone reservoir: A case study of Keshen-8 gas pool in Kuqa Depression,Tarim Basin [J]. Oil & Gas Geology, 2018, 39(4): 719-729.
[9]	Wang Junpeng, Zhang Huiliang, Zhang Ronghu, Yang Xuejun, Zeng Qinglu, Chen Xiguang, Zhao Jianquan. Enhancement of ultra-deep tight sandstone reservoir quality by fractures: a case study of Keshen gas field in Kuqa Depression, Tarim Basin [J]. Oil & Gas Geology, 2018, 39(1): 77-88.
[10]	Mao Yakun, Zhong Dakang, Li Yong, Wang Tengyu, Sun Haitao, Wang Yuan. Differential compaction of deep sandstones in compressive tectonic setting: A case study of Cretaceous reservoirs in Kuqa foreland thrust belt,Tarim Basin [J]. Oil & Gas Geology, 2017, 38(6): 1113-1122.
[11]	Tian Jixian, Li Jian, Zeng Xu, Guo Zeqing, Zhou Fei, Wang Bo, Wang Ke. Geochemical characteristics and petroleum geologic significance of natural gas in the north margin of the Qaidam Basin [J]. Oil & Gas Geology, 2017, 38(2): 355-362.
[12]	Liu Wenhui, Hu Guang, Tenger, Wang Jie, Lu Longfei, Xie Xiaoming. Organism assemblages in the Paleozoic source rocks and their implications [J]. Oil & Gas Geology, 2016, 37(5): 617-626.
[13]	Liu Wenhui, Luo Houyong, Tenger, Wang Wanchun, Wang Jie, Lu Longfei, Tao Cheng, Wang Ping, Zhao Heng. Simulation experiments on crude oil cracking and carbon isotopic evolution in carbonate reservoirs [J]. Oil & Gas Geology, 2016, 37(5): 627-633.
[14]	Yuan Jing, Cheng Ronghong, Zhu Zhongqian, Yang Xuejun, Yuan Lingrong, Li Chuntang. Multi-staged dissolution of sandstone in Cretaceous Bashijiqike Formation in DB gas field of Kuqa Depression,Tarim Basin [J]. Oil & Gas Geology, 2016, 37(4): 546-555.
[15]	Zhu Yangming, Sun Linting, Hao Fang, Zou Huayao, Guo Tonglou. Discussion on several geochemical issues of gases in Feixianguan-Changxing Formations in northeastern Sichuan Basin,China [J]. Oil & Gas Geology, 2016, 37(3): 354-362.