四川盆地梓潼凹陷烃源岩与天然气地球化学特征

董军; 王鹏; 袁东山; 任青松; 王顺玉; 李斌

doi:10.11781/sysydz201503367

四川盆地梓潼凹陷烃源岩与天然气地球化学特征

doi: 10.11781/sysydz201503367

1.
成都理工大学能源学院, 成都 610059
2. 中国石化西南油气分公司勘探开发研究院, 成都 610041
3. 西南石油大学地球科学与技术学院, 成都 610500

基金项目: 国家科技重大专项课题(2011ZX05002-004-001)资助.

详细信息

作者简介:
董军(1974-),男,博士研究生,高级工程师,从事石油、天然气地质综合研究.E-mail:cnscdj@sina.com.

中图分类号: TE122.1⁺13
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出版历程
- 收稿日期: 2014-08-05
- 修回日期: 2015-04-01
- 刊出日期: 2015-05-28

Geochemical characteristics of source rocks and natural gas in Zitong Sag, Sichuan Basin

1.
College of Energy Resources, Chengdu University of Technology, Chengdu, Sichuan 610059, China
2. Exploration & Development Institute of SINOPEC Southwest Oil & Gas Company, Chengdu, Sichuan 610041, China
3. School of Geoscience and Technology, Southwest Petroleum University, Chengdu, Sichuan 610500, China

摘要

摘要: 通过对四川盆地梓潼凹陷烃源岩发育特征及天然气地球化学特征的研究,探讨了该区天然气基本特征及成因类型。研究区烃源岩主要发育于须家河组一段、三段与五段,其中须家河组三段烃源岩厚度最大。烃源岩TOC含量普遍大于1.0%,有机质类型主要为腐殖型,有机质成熟度以成熟、高成熟为主,并已进入大量生烃阶段,生烃强度大于30×10⁸m³/km²,良好的烃源岩条件是研究区天然气聚集成藏的物质基础。研究区干气与湿气同时存在,九龙山、剑门、魏城、白龙场等地区主要为干气,而中坝、老关庙等地区主要为湿气,文兴场、柘坝场、丰谷、绵阳等地区干气与湿气均存在。研究区天然气主要为热成因煤型气,来自该区须家河组烃源岩,仅九龙山地区为油型气,主要来自下伏海相烃源岩。
- 烃源岩 /
- 地球化学特征 /
- 天然气成因 /
- 须家河组 /
- 梓潼凹陷 /
- 四川盆地
Abstract: The characteristics and genetic types of natural gas in the Zitong Sag of the Sichuan Basin have been studied according to the development and geochemical features of source rocks. The hydrocarbon source rocks in the study area mainly located in the first, third and fifth members of the Xujiahe Formation, among which the third member is the thickest. The TOC content of the source rocks is generally greater than 1.0%. Organic matter is of humic type, usually mature or highly mature. A large amount of hydrocarbon has been generated, and the generation intensity is greater than 3×10⁹ m³/km². Favorable source rock conditions enhance the accumulation of natural gas in the study area. Both dry gas and wet gas have been found. In the Jiulongshan, Jianmen, Weicheng and Bailongchang areas, dry gas is dominant. In the Zhongba and Laoguanmiao areas, wet gas is common. In the Wenxingchang, Zhebachang, Fenggu and Mianyang areas, both dry gas and wet gas exist. The natural gas in the study area is mainly thermogenic coal gas originating from the Xujiahe Formation. Oil type gas exists only in the Jiulongshan area, and is sourced from the underlying marine source rocks.
- source rock /
- geochemical characteristics /
- gas generation controls /
- Xujiahe Formation /
- Zitong Sag /
- Sichuan Basin

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参考文献(19)

[1]	唐友军,文志刚,张超漠,等.银根—额济纳旗盆地天草凹陷天2井烃源岩生烃潜力评价[J].天然气地球科学,2008,19(4):530-536. Tang Youjun,Wen Zhigang,Zhang Chaomo,et al.Evaluation of source rock of Well Tian 2,Tiancao Sag of Yinggen-Ejinaqi basin[J].Natural Gas Geoscience,2008,19(4):530-536.
[2]	杨克明,朱宏权.川西叠覆型致密砂岩气区地质特征[J].石油实验地质,2013,35(1):1-8. Yang Keming,Zhu Hongquan.Geological characteristics of superposed tight sandstone gas-bearing areas in western Sichuan[J].Petroleum Geology & Experiment,2013,35(1):1-8.
[3]	王东燕,曾华盛,王津义.四川盆地川西坳陷中段上三叠统烃源岩评价[J].石油实验地质,2010,32(2):192-195. Wang Dongyan,Zeng Huasheng,Wang Jinyi.Evaluation on Upper Triassic hydrocarbon source rocks of western Sichuan depression,Sichuan basin[J].Petroleum Geology & Experiment,2010,32(2):192-195.
[4]	张开洪,韩耀文,代鸿鸣,等.川西北梓潼地区上三叠统异常高压气藏的形成条件[J].天然气工业,1990,10(4):16-21. Zhang Kaihong,Han Yaowen,Dai hongming,et al.Condition forming gas reservoirs with abnormally high pressure in upper Triassic at Zitong region in northwest Sichuan[J].Natural Gas Industry,1990,10(4):16-21.
[5]	张开洪.川西北梓潼地区上三叠统天然气资源评价[J].西南石油学院学报,1992,14(2):1-8. Zhang Kaihong.Evaluation of gas resfrvoir of upper Triassic in Zitong Region of northwest Sichuan[J].Journal of Southwest Petroleum University,1992,14(2):1-8.
[6]	董军,蔡李梅,何秀彬,等.川西梓潼凹陷中下侏罗统气藏成藏条件研究[J].成都理工大学学报:自然科学版,2015,42(2):1-8. Dong Jun,Cai Limei,He Xiubin,et al.Research on hydrocarbon accumulations of lower and middle Jurassic reservoir of Zitong depression in the west of Sichuan basin[J].Journal of Chengdu University of Technology, 2015,42(2):1-8.
[7]	李延钧,赵圣贤,李跃纲,等.川西北地区九龙山气田天然气成因与来源探讨[J].天然气地球科学,2013,24(4):755-767. Li Yanjun,Zhao Shengxian,Li Yuegang,et al.Natural gas genesis and sources in Jiulongshan Gas Field,Northwest Sichuan Basin[J].Natural Gas Geoscience,2013,24(4):755-767.
[8]	Bernard B B,Brooks J M,Sackett W M.Light hydrocarbons in recent Texas continental shelf and slope sediments[J].Journal of Geophysical Research,1978,83(C8):4053-4061.
[9]	戴金星.天然气碳氢同位素特征和各类天然气鉴别[J].天然气地球科学,1993(2/3):1-40. Dai Jinxing.Carbon and hydrogen isotopic compositions and origin identification of different types natural gas [J].Natural Gas Geoscience,1993(2/3):1-40.
[10]	吴小奇,黄士鹏,廖凤蓉,等.四川盆地须家河组及侏罗系煤成气碳同位素组成[J].石油勘探与开发,2011,38(4):418-427. Wu Xiaoqi,Huang Shipeng,Liao Fengrong,et al.Carbon isotopic compositions of coal-derived gas in the Xujiahe Formation and Jurassic in the Sichuan Basin[J].Petroleum Exploration and Development,2011,38(4):418-427.
[11]	戴金星,倪云燕,邹才能,等.四川盆地须家河组煤系烷烃气碳同位素特征及气源对比意义[J].石油与天然气地质,2009,30(5):519-529. Dai Jinxing,Ni Yunyan,Zou Caineng,et al.Carbon isotope features of alkane gases in the coal measures of the Xujiahe Formation in the Sichuan Basin and their significance to gas-source correlation[J].Oil & Gas Geology,2009,30(5):519-529.
[12]	戴金星,裴锡古,戚厚发.中国天然气地质学[M].北京:石油工业出版社,1992. Dai Jinxing,Pei Xigu,Qi Houfa.Geology of natural gas in China[M].Beijing:Petroleum Industry Press,1992.
[13]	刚文哲,高岗,郝石生,等.论乙烷碳同位素在天然气成因类型研究中的应用[J].石油实验地质,1997,19(2):164-167. Gang Wenzhe,Gao Gang,Hao Shisheng,et al.Carbon isotope of ethane applied in the analyses of genetic types of natural gas[J].Experimental Petroleum Geology,1997,19(2):164-167.
[14]	张士亚,郜建军,蒋泰然.利用甲、乙烷碳同位素判别天然气类型的一种新方法[M].北京:地质出版社,1998:48-58. Zhang Shiya,Gao Jianjun,Jiang Tairan.A new method distinguishing natural gas types with carbon isotopes from methane and ethane [M].Beijing:Geological Publishing House,1998:48-58.
[15]	宋岩,徐永昌.天然气成因类型及其鉴别[J].石油勘探与开发,2005,32(4):24-29. Song Yan,Xu Yongchang.Origin and identification of natural gases[J].Petroleum Exploration & Development,2005,32(4):24-29.
[16]	肖晖,赵靖舟,王大兴,等.鄂尔多斯盆地奥陶系原生天然气地球化学特征及其对靖边气田气源的意义[J].石油与天然气地质,2013,34(5):601-609. Xiao Hui,Zhao Jingzhou,Wang Daxing,et al.Geochemical cha-racteristics of primary gas in the Ordovician and their significance for the gas source of Jingbian gas field,Ordos Basin[J].Oil & Gas Geology,2013,34(5):601-609.
[17]	王英超,靳永斌,税蕾蕾,等.高纯气体乙烷及丙烷裂解的动力学研究[J].断块油气田,2013,20(3):311-315. Wang Yingchao,Jin Yongbin,Shui Leilei,et al.Study on kine-tics of high-purity ethane and propane cracking[J].Fault-Block Oil & Gas Field,2013,20(3):311-315.
[18]	张焕旭,倪帅,王力,等.准噶尔盆地滴南凸起中段南支天然气混源比例研究[J].断块油气田,2014,21(2):176-180. Zhang Huanxu,Ni Shuai,Wang Li,et al.Mixing source ratio of nature gas in south branch of Dinan salient, Zhunggar Basin[J].Fault-Block Oil and Gas Field,2014,21(2):176-180.
[19]	宋占东,姜振学,张梦瑜.准噶尔盆地南缘异常天然气地球化学特征及其成因[J].油气地质与采收率,2014,21(2):66-70. Song Zhandong,Jiang Zhenxue,Zhang Mengyu.Origins and geochemical characteristics of unconventional natural gas in south margin of Junggar basin[J].Petroleum Geology and Recovery Efficiency,2014,21(2):66-70.