库车坳陷乌什凹陷构造样式及对油气的控制
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摘要
受南天山造山作用的影响,塔里木盆地库车坳陷乌什凹陷断裂构造样式复杂,为了查明其基础构造特征,结合区域地质资料、地震资料解释等,综合分析该凹陷构造样式。研究表明,乌什凹陷发育对冲、背冲、楔冲3种主要断层构造组合形式,以及断弯褶皱、断展褶皱、双重构造、突发构造、生长构造等一系列局部构造变形样式。在断裂构造样式分析的基础上,将研究区划分出北东、北东东、北西、东西向4组逆断层以及北北西向的走滑断裂。根据研究区构造演化背景,结合地震剖面和平衡演化剖面分析,认为研究区主体断层至少经历了前中生代、二叠纪末—三叠纪初、侏罗纪、侏罗纪末—白垩纪初和新近纪晚期5个演化阶段。乌什凹陷特殊构造样式与烃源岩、油气藏和含油气系统的性质及分布有着密切的关系。图5参32
Affected by the South Tianshan orogenesis,the faulted structure patterns in the Wushi Sag are very complex.Aimed to find out the basic characteristics of the structures,this article studies many seismic profile sections,the regional geology,the structural patterns and the formative stage of the structures.The Wushi Sag has three main fault patterns(face to face thrust,back to back thrust,sphenoid thrust),and many local fault structural patterns(fault-bend fold,fault-propagation fold,duplex structure,outburst structure,growth structure,etc).There mainly develops four groups of reverse faults(NE,NEE,NW,EW) and one group of NNW trending strike-slip faults.According to the structural background,seismic profiles and balanced cross sections,the main fault in the studied area experienced at least five evolving stages which are pre-Mesozoic,late Permian-early Tertiary,Jurassic,late Jurassic-early Cretaceous,and late Neogene.The structural styles have close relationship with source rocks,hydrocarbon reservoirs,and the character and distribution of petroleum systems.
Affected by the South Tianshan orogenesis,the faulted structure patterns in the Wushi Sag are very complex.Aimed to find out the basic characteristics of the structures,this article studies many seismic profile sections,the regional geology,the structural patterns and the formative stage of the structures.The Wushi Sag has three main fault patterns(face to face thrust,back to back thrust,sphenoid thrust),and many local fault structural patterns(fault-bend fold,fault-propagation fold,duplex structure,outburst structure,growth structure,etc).There mainly develops four groups of reverse faults(NE,NEE,NW,EW) and one group of NNW trending strike-slip faults.According to the structural background,seismic profiles and balanced cross sections,the main fault in the studied area experienced at least five evolving stages which are pre-Mesozoic,late Permian-early Tertiary,Jurassic,late Jurassic-early Cretaceous,and late Neogene.The structural styles have close relationship with source rocks,hydrocarbon reservoirs,and the character and distribution of petroleum systems.
引文
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[24]杨克绳.中国含油气盆地结构和构造样式地震解释[M].北京:石油工业出版社,2006.216-303.
[25]姚超,焦贵浩,王同和,等.中国含油气构造样式[M].北京:石油工业出版社,2004.123-224.
[26]王燮培,严俊君.含油气盆地构造样式研究中几个问题的讨论[J].地质科技情报,1996,15(3):51-56.
[27]徐政语,李大成,卢文忠.渝东构造样式分析与成因解析[J].大地构造与成矿学,2004,28(1):15-22.
[28]付晓飞,吕延防,孙永河.库车坳陷北带天然气聚集成藏的关键因素[J].石油勘探与开发,2004,31(3):23-26.
[29]贾进华,周东延,张立平.塔里木盆地乌什凹陷石油地质特征[J].石油学报,2004,25(6):12-17.
[30]王招明,夏维书,周黎霞,等.塔里木盆地乌什凹陷及周边露头区油气地质[M].北京:石油工业出版社,2002.1-128.
[31]田作基,张光亚,邹华耀,等.塔里木库车含油气系统油气成藏的主控因素及成藏模式[J].石油勘探与开发,2001,28(5):12-16.
[32]宋岩,洪峰,夏新宇,等.异常压力与油气藏的同生关系——以库车坳陷为例[J].石油勘探与开发,2006,33(3):55-60.
[2]Suppe J.Geometry and kinematics of fault-bend folding[J].American Journal of Science,1983,283:684-721.
[3]Suppe J,Medwedeff D.Geometry and kinematics of fault-propagation folding[J].Eclogate Geologicate Helvetiae,1990,3:409-454.
[4]Thomas W A.Mushwad:Ductile duplex in the Appalachianthrust belt in Alabama[J].AAPG Bulletin,2001,85(10):1847-1869.
[5]Mitra S.Fold-accommodation faults[J].AAPG Bulletin,2002,86(4):671-693.
[6]郑民,孟自芳,李相博.陆内前陆盆地的复合动力演化研究[J].新疆石油天然气,2005,1(1):12-16.
[7]车自成,罗金海,刘良.中亚与中国西北地区陷落型前陆盆地的构造样式及成因分析[J].地球学报,1998,19(3):225-232.
[8]郭召杰,李茂松.中天山早古生代离散地体构造的讨论[J].北京大学学报(自然科学版),1993,29(3):102-108.
[9]Lu H F,Howell D G,Jia D,et al.Rejuvenation of the Kuqaforeland Basin,northern flank of the Tarim Basin,northern China[J].Inter.Geol.Rev.,1994,36:1151-1158.
[10]高长林,叶德燎,钱一雄.前陆盆地的类型及油气远景[J].石油实验地质,2000,22(2):99-104,114.
[11]卢华复,贾东,陈楚铭,等.库车新生代构造性质和变形时间[J].地学前缘,1999,6(4):215-221.
[12]李永安,李强,刘玉良,等.塔里木陆块晚古生代以来古地磁特征研究[J].新疆地质,1989,16(3):4-80.
[13]方大钧,陈汉林,王朋岩,等.塔里木盆地中生代古地磁研究及构造意义[J].地球物理学报,1997,40(1):47-55.
[14]李曰俊,孙龙德,吴浩若,等.南天山西端乌帕塔尔坎群发现石炭—二叠纪放射虫化石[J].地质科学,2005,40(2):220-226.
[15]李曰俊,孙龙德,吴浩若,等.塔里木盆地西北缘三叠系硅岩砾石中的放射虫化石及其地质意义[J].地质科学,2004,39(2):153-158.
[16]张明利,谭成轩,汤良杰,等.塔里木盆地库车坳陷中新生代构造应力场分析[J].地球学报,2004,25(6):615-619.
[17]曾联波,谭成轩,张明利.塔里木盆地库车坳陷中新生代构造应力场及其油气运聚效应[J].中国科学(D辑),2004,34(增刊):98-106.
[18]曾联波,王贵文.塔里木盆地库车山前构造带地应力分布特征[J].石油勘探与开发,2005,32(3):64-65.
[19]郑民,孟自芳,李相博,等.新构造运动活跃的库车盆地含油气系统特征[J].中山大学学报(自然科学版),2005,44(增刊):304-308.
[20]汤良杰.塔里木盆地构造演化与构造样式[J].地球科学——中国地质大学学报,1994,19(6):742-754.
[21]滕志宏,岳乐平,何登发.南疆库车河新生界剖面磁性地层研究[J].地层学杂志,1997,21(1):55-62.
[22]Harding T P,Lowell J D.Structural styles,their plate tectonichabitats and hydrocarbon traps in petroleum provinces[J].AAPGBulletin,1979,63:1016-1058.
[23]Lowell J D.Structural styles in petroleum exploration[M].Tulsa:OGCI Publications,1985.1-43.
[24]杨克绳.中国含油气盆地结构和构造样式地震解释[M].北京:石油工业出版社,2006.216-303.
[25]姚超,焦贵浩,王同和,等.中国含油气构造样式[M].北京:石油工业出版社,2004.123-224.
[26]王燮培,严俊君.含油气盆地构造样式研究中几个问题的讨论[J].地质科技情报,1996,15(3):51-56.
[27]徐政语,李大成,卢文忠.渝东构造样式分析与成因解析[J].大地构造与成矿学,2004,28(1):15-22.
[28]付晓飞,吕延防,孙永河.库车坳陷北带天然气聚集成藏的关键因素[J].石油勘探与开发,2004,31(3):23-26.
[29]贾进华,周东延,张立平.塔里木盆地乌什凹陷石油地质特征[J].石油学报,2004,25(6):12-17.
[30]王招明,夏维书,周黎霞,等.塔里木盆地乌什凹陷及周边露头区油气地质[M].北京:石油工业出版社,2002.1-128.
[31]田作基,张光亚,邹华耀,等.塔里木库车含油气系统油气成藏的主控因素及成藏模式[J].石油勘探与开发,2001,28(5):12-16.
[32]宋岩,洪峰,夏新宇,等.异常压力与油气藏的同生关系——以库车坳陷为例[J].石油勘探与开发,2006,33(3):55-60.
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