塔中顺托果勒区块走滑断裂特征及控油作用
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摘要
通过对塔中顺托果勒区块三维地震资料的精细解释,识别出了顺托1号左旋走滑断裂,并对其构造特征、活动期次、形成机理及对油气成藏的影响进行了分析。研究认为,顺托1号走滑断裂主要发育线性延伸构造、负花状构造、雁列式张性正断层、海豚和丝带效应等构造样式,其主要形成期在志留纪末期—泥盆纪早期。加里东晚期,来自东南方向阿尔金岛弧强烈的斜向碰撞挤压作用,对北东向的基底薄弱带产生走滑分量,形成了北东走向的左旋走滑断裂。近期的研究成果表明,与北东向走滑断裂形成有关的低幅度背斜圈闭群是该区块志留系比较有利的油气勘探目标。
Based on the detailed interpretation of 3D seismic data from Shuntuoguole region in the middle Tarim Basin,the Shuntuo No.1 strike-slip fault was identified,and its structural characteristics,active periods,genesis and influences on reservoir were also studied.The structural styles of the Shuntuo No.1 strike-slip fault included extensional linear structure,negative flower structure,en-echelon tension normal fault,dolphin and riband effects,etc.Its main active time lasted from the end of Silurian to the Early Devonian.At the end of Caledonian,the Altym Island Arch compressed severely from the southeast and acted on the northeast-trending weak zone of basement,resulting in the northeast-trending strike-slip fault.Recent studies have proved that low-amplitude anticline traps related to the northeast-trending strike-slip fault are favorable oil-and-gas exploration targets of Silurian in Shuntuoguole region of the middle Tarim Basin.
Based on the detailed interpretation of 3D seismic data from Shuntuoguole region in the middle Tarim Basin,the Shuntuo No.1 strike-slip fault was identified,and its structural characteristics,active periods,genesis and influences on reservoir were also studied.The structural styles of the Shuntuo No.1 strike-slip fault included extensional linear structure,negative flower structure,en-echelon tension normal fault,dolphin and riband effects,etc.Its main active time lasted from the end of Silurian to the Early Devonian.At the end of Caledonian,the Altym Island Arch compressed severely from the southeast and acted on the northeast-trending weak zone of basement,resulting in the northeast-trending strike-slip fault.Recent studies have proved that low-amplitude anticline traps related to the northeast-trending strike-slip fault are favorable oil-and-gas exploration targets of Silurian in Shuntuoguole region of the middle Tarim Basin.
引文
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[2]严俊君,王燮培.关于扭动构造的鉴别问题[J].石油与天然气地质,1996,17(1):8-14.
[3]王燮培,费琪,张家骅.石油勘探构造分析[M].武汉:中国地质大学出版社,1991:133-163.
[4]张承泽,于红枫,张海祖,等.塔中地区走滑断裂特征、成因及地质意义[J].西南石油大学学报(自然科学版),2008,30(5):22-26.
[5]吴根耀,李曰俊,王国林,等.新疆西部巴楚地区晋宁期的洋岛火山岩[J].现代地质,2006,20(3):361-369.
[6]李曰俊,吴根耀,孟庆龙,等.塔里木盆地中央地区的断裂系统:几何学、运动学和动力学背景[J].地质科学,2008,43(1):82-118.
[7]邬光辉,成丽芳,刘玉魁,等.塔里木盆地寒武—奥陶系走滑断裂系统特征及其控油作用[J].新疆石油地质,2011,32(3):239-243.
[8]陆克政.含油气盆地分析[M].东营:石油大学出版社,2001:137.
[9]刘玉瑞,刘启东,杨小兰.苏北盆地走滑断层特征与油气聚集关系[J].石油与天然气地质,2004,25(3):271-283.
[10]杨春林,吴奇之,夏义平.塔里木盆地北部隆起中、新生界张扭断裂系统成因及其油气聚集的作用[J].石油地球物理勘探,2000,35(4):461-468.
[11]吕修祥,白忠凯,赵风云.塔里木盆地塔中隆起志留系油气成藏及分布特点[J].地学前缘,2008,15(2):156-165.
[12]金之钧.中国典型叠合盆地油气成藏研究新进展(之二):以塔里木盆地为例[J].石油与天然气地质,2006,27(3):281-288.
[13]全裕科,侯洪斌,漆立新,等.塔中北坡两顺地区志留系成藏条件及期次分析[J].矿物岩石,2008,28(4):100-108.
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