库车坳陷天然气高效成藏过程分析

doi:10.11743/ogg20050601

摘要/Abstract

摘要：

塔里木盆地库车坳陷具备大中型天然气藏形成的基本地质条件。其中,三叠—侏罗系烃源岩不仅累积生气强度大,而且新近纪以来的快速生、排气过程,形成了一类高效气源灶,为形成克拉2型的高效天然气藏起到了关键作用。其次,新近纪以来,库车坳陷山前冲断带受挤压作用发生了强烈的构造变形,盐下白垩系—侏罗系发生垂向叠复使地层出现体积增容。在优质盖层保护下,地层增容产生构造抽吸作用,是克拉2型高效天然气藏形成的重要途径。通过生烃动力学及构造物理模拟实验,证实了这些新的认识,并进一步揭示了库车坳陷侏罗系烃源岩的有效生气及天然气的有效运移聚集成藏的过程。

关键词: 高效气源灶, 构造抽吸, 优质盖层, 高效成藏, 库车坳陷

Abstract:

Kuqa depression in Tarim basin has the basic geologic conditions to form medium and large gas pools.The Triassic-Jurassic source rocks not only have very large cumulative gas generating intensity,but also have experienced a very rapid gas generating and discharging process since Neogene;thus they have become highly efficient gas kitchens and played a key role in the formation of Kela 2 type high efficient gas pools.The piedmont thrust zone in Kuqa depression has been strongly deformed due to the compression since Neogene.Vertical superimposition of Cretaceous-Jurassic strata below the halite resulted in increment of rock volume.Being sealed by good caprock,the rock volume enlargement would lead to structural swabbing,an important process for the formation of Kela 2 type high efficient gas pools.Simulation experiments of hydrocarbon-generating kinetics and tectophysics have proved these new understandings and further revealed the effective gas generation of Jurassic source rocks and effective gas migration and accumulation process in Kuqa depression.

Key words: high efficient gas kitchen, structural swabbing, quality caprock, high efficient reservoiring, Kuqa depression

中图分类号:

TE112.3

赵文智,王红军,单家增,等. 库车坳陷天然气高效成藏过程分析[J]. 石油与天然气地质, 2005, 26(6): 703-710. doi: 10.11743/ogg20050601 Zhao Wenzhi,Wang Hongjun,Shan Jiazeng,et al. Analysis of highly efficient gas reservoiring process in Kuqa depression[J]. Oil & Gas Geology, 2005, 26(6): 703-710. doi: 10.11743/ogg20050601

参考文献

[1] 赵靖舟,戴金星.库车油气系统油气成藏期与成藏史[J].沉积学报,2002,20(2):314～319Zhao Jingzhou,Dai Jinxing.Accumulation timing and history of Kuche petroleum system[J].Acta Sedimentologica Sinica,2002,20(2):314-319
[2] 皮学军.库车前陆盆地勘探难点与对策[A].见:贾承造.中国中西部前陆盆地冲断带油气勘探文集[C].北京:石油工业出版社,2002.141～151 Pi Xuejun.The exploration difficulty and countermeasure in Kuqa foreland basin[A].In:Jia Chengzao,ed.Collected papers of petroleum exploration on foreland thrust fault belts in western China[C].Beijing:Petroleum Industry Press,2002.141-151
[3] 高瑞祺,赵政璋.中国油气新区勘探(卷一):塔里木盆地库车坳陷大气田勘探[M].北京:石油工业出版社,2002.134～144Gao Ruiqi,Zhao Zhengzhang.The frontier petroleum exploration in China(Vol 1):exploration of the large gas fields in Kuqa depression of Tarim basin[M].Beijing:Petroleum Industry Press,2002.134-144
[4] 周兴熙,张光亚,李洪辉,等.塔里木盆地库车油气系统的成藏作用[M].北京:石油工业出版社,2002.8～9Zhou Xingxi,Zhang Guangya,Li Honghui,et al.The reservoir formation in Kuqa petroleum system,Tarim basin[M].Beijing:Petroleum Industry Press,2002.8-9
[5] 赵文智,许大丰,张朝军.库车坳陷构造变形层序划分及其在油气勘探中的意义[J].石油学报,1998,19(3):1～5Zhao Wenzhi,Xu Dafeng,Zhang Chaojun.Division of structural deformed sequence in Kuqa depression and significance for oil-gas exploration[J].Acta Petrolei Sinica,1998,19(3):1-5
[6] 李梅,包建平,汪海,等.库车前陆盆地烃源岩和烃类成熟度及其地质意义[J].天然气地球科学,2004,15(4):367～378Li Mei,Bao Jianping,Wang Hai,et al.The analysis on the maturity parameters of source rock and hydrocarbons in Kuche foreland basin of Tarim basin[J].Natural Gas Geoscience,2004,15(4):367-378
[7] 孙金山,刘国宏,孙明安,等.库车坳陷侏罗系煤系烃源岩评价[J].西南石油学院学报,2003,25(6):1～4Sun Jinshan,Liu Guohong,Sun Mingan,et al.The coal source rock appraisal of Jurassic in Kuqa depression[J].Journal of South West Petroleum Institute,2003,25(6):1-4
[8] 戴金星.加强天然气地学研究,勘探更多大气田[J].天然气地球科学,2003,14(1):1～14Dai Jinxing.Enhance the studies on natural gas geology and find more large gas fields in China[J].Natural Gas Geoscience,2003,14(1):1-14
[9] 戴金星,夏新宇,洪峰.天然气地学研究促进了中国天然气储量的大幅度增长[J].新疆石油地质,2002,23(5):357～365Dai Jinxing,Xia Xinyu,Hong Feng.Natural gas geology accele-rated the growth of natural gas reserves in large scale in China[J].Xinjiang Petroleum Geology,2002,23(5):357-365
[10] 单加增.构造模拟实验在石油地质学中的应用[M].北京:石油工业出版社,1996.39～120Shan Jiazeng.Application of structure physical simulation on petroleum geology[M].Beijing:Petroleum Industry Press,1996.39-120
[11] 李贤庆,肖贤明,Tang Y,等.库车坳陷煤成甲烷碳同位素动力学研究[J].石油与天然气地质,2004,25(1):21～25Li Xianqing,Xiao Xianming,Tang Y,et al.Kinetic study of carbon isotope in humic gas methane in Kuqa depression[J].0il & Gas Geology,25(1):21-25
[12] 刘志宏,卢华夏,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):297～303Liu Zhihong,Lu Huafu,Jia Chengzao,et al.Structures and hydrocarbon accumulation in Kuqa rejuvenated foreland basin[J].Oil & Gas Geology,2001,22(4):297-303
[13] 曾联波.库车前陆盆地喜马拉雅运动特征及其油气地质意义[J].石油与天然气地质,2004,25(2):175～179Zeng Lianbo.Characteristics and petroleum geological significance of Himalayan orogeny in Kuqa foreland basin[J].Oil & Gas Geo-logy,2004,25(2):175-179

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