收稿日期: 2014-05-27
修回日期: 2014-08-27
网络出版日期: 2015-03-10
The Discussion on Natural Gas Source in Akmomu Gasfield,Northern Margin of Kashi Sag
Received date: 2014-05-27
Revised date: 2014-08-27
Online published: 2015-03-10
喀什凹陷北缘的阿克莫木气田天然气来源一直存在争议。喀什凹陷北缘地区石炭系新发现剖面有机质丰度低，生烃潜力有限。而喀什凹陷中心虽然有机质丰度高，但与阿克莫木气田之间有数条断层和断块阻隔。流体包裹体与断裂活动时间分析表明天然气充注在逆冲断层形成之后，故石炭系天然气很难运移至阿克莫木气田。二叠系有机质丰度中等，在乌恰构造带北部埋深加大，烃源岩的热演化程度显著增加，具备生成高成熟度干气的潜力。热压模拟实验结果表明，阿克1井天然气碳同位素特征与二叠系和侏罗系康苏组烃源岩500℃模拟气比较接近。综合阿克1井天然气地球化学特征、热模拟实验结果及油气充注时间和运移条件的匹配关系，认为阿克莫木气田天然气可能主要来自乌恰构造带北部的二叠系烃源岩和侏罗系康苏组烃源岩。
刘伟，杨飞，吴金才，肖杭州 . 喀什凹陷北缘阿克莫木气田气源探讨[J]. 天然气地球科学, 2015 , 26(3) : 486 -494 . DOI: 10.11764/j.issn.1672-1926.2015.03.0486
The gas source of Akmomu Gasfield is still controversial.Based on the research of three main sets of source rocks in Kashi Sag,extra-low organic matter abundance in Carboniferous of the northern margin of Kashi Sag was found and it indicates that hydrocarbon-generating potential of Carboniferous is low.According to the matching relation between gas filling time and hydrocarbon migration conditions,the migration of hydrocarbon from the center of Kashi Sag to Akmomu Gasfield is impossible.So natural gas of Akmomu gasfield cannot be generated by Carboniferous.The organic matter abundance of Permian is medium in this area,which is better than once thought.As burial depth of Permian increases toward north in the north of well Ake 1,the maturity of Permian increased significantly which make it possible for Permian to generate dry gas with high maturity.The results of hot-pressing simulation experiment show that the carbon isotope characteristics of natural gas from well Ake 1 are similar to that of simulating gas of Permian and Jurassic Kangsu Formation,at 500℃.Combined with the geochemical characteristics of natural gas from well Ake 1,the matching relationship between gas filling time and hydrocarbon migration conditions and analysis of the experimental results of thermal simulation,it is concluded that the natural gas of Akmomu Gasfield may come from the source rocks of Permian and Jurassic Kangsu Formation.
Key words： Kashi Sag; Simulated gas; Migration; Carbon isotope; Source of natural gas
［1］Zhang Qiucha,Wang Fuhuan,Xiao Zhongyao,et al.The discussion of natural gas source in well Ake 1[J].Natural Gas Geoscience,2003,14(6):484-487.［张秋茶，王福焕,肖中尧,等.阿克1井天然气气源探讨[J].天然气地球科学,2003,14(6):484-487.］
［2］Zhang Junfeng,Wang Dongliang,Wang Zhaoming,et al.Natural gas deposit formation geochemistry of Akmomu Gasfield Kashi Sag in Tarim Basin[J].Natural Gas Geoscience,2005,16(4):507-513.［张君峰,王东良,王招明,等.喀什凹陷阿克莫木气田天然气成藏地球化学[J].天然气地球科学,2005,16(4):507-513.］
［3］Zhao Mengjun,Xia Xinyu,Qin Shengfei,et al.Gas source of Ake 1 well resource in Tarim Basin[J].Natural Gas Industry,2003,23(2):31-33.［赵孟军,夏新宇,秦胜飞,等.塔里木盆地阿克1井气藏气源研究[J].天然气工业,2003,23( 2):31-33.］
［4］Liu Sheng,Wang Dongliang,Wang Zhaoming,et al.Geochemical analyses on the natural gas formation of well Ake 1 in the Tarim Basin[J].Petroleum Geology & Experiment,2004,26(3):273-280.［刘胜,王东良,王招明,等.塔里木盆地阿克1井天然气成藏地球化学分析[J].石油实验地质,2004,26(3):273-280.］
［5］Li Xianqing,Xiao Xianming,Xiao Zhongyao,et al.Geochemical characteristics and origin of natural gas from Ake-1 gas pool in the Tarim Basin[J].Natural Gas Geoscience,2005,16(1):48-53.［李贤庆,肖贤明,肖中尧,等.塔里木盆地阿克1气藏天然气的地球化学特征和成因[J].天然气地球科学,2005,16(1):48-53.］
［6］Zhang Xianjun,Zeng Changmin,Guo Qunyin,et al.Geochemical Characteristic and Origin of Oil and Gas in Akmomu Gas Field,Tarim Basin［C］.Beijing:5th International Symposium on Hydrocarbon Accumulation Mechanism and Petroleum Resource Evaluation,2009.［张现军,曾昌民,郭群英,等.塔里木盆地阿克莫木气田天然气地球化学特征及成因认识［C］.北京:第五届油气成藏机理与油气资源评价国际学术研讨会,2009.］
［7］Wang Zhaoming,Zhao Mengjun,Zhang Shuichang,et al.A preliminary study on formation of Akmomu Gasfield in the Kashi Sag,Tarim Basin[J].Chinese Journal of Geology,2005,40(2):237-247.［王招明,赵孟军,张水昌,等.塔里木盆地西部阿克莫木气田形成初探[J].地质科学,2005,40(2):237-247.］
［8］Dai Jinxing,Ni Yunyan,Li Jian,et al.Carbon isotope types and significances of Alkane gases from Junggar Basin and Tarim Basin[J].Xinjiang Petroleum Geology,2008,29(4):403-410.［戴金星,倪云燕,李剑,等.塔里木盆地和准噶尔盆地烷烃气碳同位素类型及其意义[J].新疆石油地质,2008,29(4):403-410.］
［9］Dai Jinxing.Major developments of coal formed gas exploration in the last 30 years in China[J].Petroleum Exploration and Development,2009,36(3):264-279.［戴金星.中国煤成气研究30年来勘探的重大进展[J].石油勘探与开发,2009,36(3):264-279.］
［10］Da Jiang,Song Yan,Zhao Mengjun,et al.Evaluation and potential discussion of hydrocarbon source rock in north margin of Kashi Sag,Tarim Basin[J].Xinjiang Geology,2007,25(1):77-80.［达江,宋岩,赵孟军,等.塔里木盆地喀什凹陷北缘烃源岩潜力探讨[J].新疆地质,2007,25(1):77-80.］
［11］Zhao Mengjun,Wang Zhaoming,Song Yan,et al.Source and accumulation of oil and gas in Kashi Sag,Tarim Basin,NW China[J].Petroleum Exploration and Development,2005,32(2):50-54.［赵孟军,王招明,宋岩,等.塔里木盆地喀什凹陷油气来源及其成藏过程[J].石油勘探与开发,2005,32(2):50-54.］
［12］Chen Anding,Li Jianfeng.The geochemical indicators of natural gas migration[J].Natural Gas Geoscience,1994,5(4):38-67.［陈安定,李剑锋.天然气运移的地球化学指标研究[J].天然气地球科学,1994,5(4):38-67.］
［13］Zhu Yuenian.Geochemical research progress on the inorganic component of natural gas[J].Natural Gas Geoscience,1994,1(1):1-28.［朱岳年.天然气中非烃组分地球化学研究进展[J].天然气地球科学,1994,1(1):1-28.］
［14］He Jiaxiong,Chen Weihuang,Li Mingxing.Genetic types of natural gas and source rocks in Ying-Qiong Basin[J].China Offshore Oil and Gas:Geology,2000,14(6):33-40.［何家雄,陈伟煌,李明兴.莺—琼盆地天然气成因类型及气源剖析[J].中国海上油气:地质,2000,14(6):33-40.］
［15］Zhang Dianwei,Liu Wenhui,Zheng Jianjing,et al.Helium and argon isotopic compositions of natural gases in the Tazhong area,Tarim Basin[J].Petroleum Exploration and Development,2005,32(6):38-41.[张殿伟,刘文汇,郑建京,等.塔中地区天然气氦,氩同位素地球化学特征[J].石油勘探与开发,2005,32(6):38-41.]
［16］Huang Zhibin,Du Pinde,Tan Zejin,et al.Permian palynosiratigraphy of the Ake 1 borehole,Tarim Basin and its geological significance[J].Journal of Stratigraphy,2004,28(1):81-86.［黄智斌,杜品德,谭泽金,等.塔里木盆地阿克1井二叠纪孢粉地层及其地质意义[J].地层学杂志,2004,28(1):81-86.］
［17］Gao Xianzhi.Volume evaluation of the gas mixed with other gases using carbon isotopic compositions[J].Acta Sedimentologica Sinica,1997,15(2):63-65.［高先志.利用甲烷碳同位素研究混合气的混合体积[J].沉积学报,1997,15(2):63-65.］
［18］Zhang Youyu,Horst Zwingmann,Andrew Todd,et al.K-Ar dating of authigenic illite and its applications to study of oil gas charging histories of typical sandstone reservoirs,Tarim basin,Northwest China[J].Earth Science Frontiers,2004,11(4):637-648.［张有瑜,Zwingmann Horst,Todd Andrew,等.塔里木盆地典型砂岩油气储层自生伊利石K-Ar同位素测年研究与成藏年代探讨[J].地学前缘,2004,11(4):637-648.］
［19］Zhan Jinming,Li Xianqing,Zhou Qiang.The study on hydrocarbon generation historyof Jurassic coal measures source rocks in Kashi Sag[J].Journal of Anhui University of Science and Technology:Natural Science,2005,25(2):1-4.［詹金明,李贤庆,周强.喀什凹陷侏罗系煤系烃源岩的生烃史研究[J].安徽理工大学学报:自然科学版,2005,25(2):1-4.］
［20］Sun Baosheng,Liu Zenren,Wang Zhaoming.New knowledge on geology of Kashi Depression in southwest Tarim[J].Xinjiang Geology,2003,21(1):78-84.［孙宝生,刘增仁,王招明.塔里木西南喀什凹陷几个地质问题的新认识[J].新疆地质,2003,21(1):78-84.］
［21］Zhou Xinyuan,Luo Jinhai.Unconformities,their tectonic significance and impact on hydrocarbon accumulation in the Kashi Sag,Tarim Basin[J].Petroleum Exploration and Development,2004,31(2):21-24.［周新源,罗金海.喀什凹陷地层不整合的构造意义及对油气成藏的影响[J].石油勘探与开发,2004,31(2):21-24.］
/
| 〈 |
|
〉 |
甘公网安备 62010202000678号