金湖凹陷铜城断层构造特征与油气成藏
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摘要
铜城断层是苏北盆地金湖凹陷中一条二级断层,表现为明显的分段性,南段为逆断层,北段为正断层。关于铜城断层的性质及构造演化,长期以来存在不同的认识。基于地震剖面解释的构造分析并结合走滑断层的鉴别标志,认为铜城断层为一典型的走滑断层。走滑作用造成了断层倾向沿走向发生变化,正逆两种断层交替出现。铜城走滑断层不仅有利于形成一系列不同类型的圈闭,而且对低渗透储集层具有明显的改善作用,其伴生的构造圈闭是有利的油气聚集场所。
Tongcheng Fault is a second class fault which controlls the development of Tongcheng structural belt in Jinhu Sag.It is divided into two parts by its faulted feature showing reverse fault character at the south part and normal fault feature at the north part.There are different views about its character and evolvement.Tongcheng fault is considered as a typical strike-slip fault based on the structural analysis of seismic profiles.Varied directions of dip result in normal fault and reverse fault alternatively occurring along the fault because of strike-slip movement.Tongcheng strike-slip fault can not only form different types of traps,but also improve physical property of low-permeability reservoir,which is of great advantage to oil and gas accumulation.
Tongcheng Fault is a second class fault which controlls the development of Tongcheng structural belt in Jinhu Sag.It is divided into two parts by its faulted feature showing reverse fault character at the south part and normal fault feature at the north part.There are different views about its character and evolvement.Tongcheng fault is considered as a typical strike-slip fault based on the structural analysis of seismic profiles.Varied directions of dip result in normal fault and reverse fault alternatively occurring along the fault because of strike-slip movement.Tongcheng strike-slip fault can not only form different types of traps,but also improve physical property of low-permeability reservoir,which is of great advantage to oil and gas accumulation.
引文
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[16]张心文,叶绍东,金宝林.天长地区阜宁组低渗储层特征及滚动开发对策[J].西南石油学院学报,2004,26(5):21～23.ZHANG Xin-wen,YE Shao-dong,JIN Bao-lin.Method of characteristics of low permeability reservoir and rolling development to Funing formation in Tianchang area[J].Journal of Southwest Petroleum Institute,2004,26(5):21～23.
[17]高德群,陈佳梁,李学英,等.金湖凹陷铜城断裂带低渗透储层特征研究[J].江苏地质,2005,29(3):147～151.GAO De-qun,CHEN Jia-liang,LI Xue-ying,et al.Characteristics of low permeability reservoirs of Tongcheng fault zone in Jinhu depression of Jiangsu Province[J].Jiangsu Geology,2005,29(3):147～151.
[2]舒良树,王博,王良书,等.苏北盆地晚白垩世—新近纪原型盆地分析[J]高校地质学报,2005,11(4):534～543.SHU Liang-shu,WANG Bo,WANG Liang-shu,et al.Analysis of northern Jiangsu prototype basin from Late Cretaceous to Neogene[J].Geological Journal of China Universities,2005,11(4):534～543.
[3]操成杰,周新桂,何彬,等.苏北盆地天长箕状断陷断裂体系及油气成藏规律[J].地质力学学报,2003,9(1):56～61.CAO Cheng-jie,ZHOU Xin-gui,HE Bin,et al.Fault system and formation law of oil reservoir in Tianchang halfgraben-like depression in Subei basin[J].Journal of Geomechanics,2003,9(1):56～61.
[4]杨晓兰,刘玉瑞.铜城逆断层的地质特征与油气聚集[J].小型油气藏,2000,5(4):4～6.YANG Xiao-lan,LIU Yu-rui.Geological characteristics of Tongcheng thrust fault and hydrocarbon accumulation[J].Small Hydrocarbon Reservoirs,2000,5(4):4～6.
[5]邱旭明.扭动作用在苏北盆地构造体系中的表现及其意义[J].江汉石油学院学报,2002,24(2):5～7.QIU Xu-ming.Representation of torsional action in tectonic system of Subei Basin and its significance[J].Journal of Jianghan Petroleum Institute,2002,24(2):5～7.
[6]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):279～293.LIU Yu-rui,LIU Qi-dong,YANG Xiao-lan.Relation between features of strike-slip faults and hydrocarbon accumulation in Subei basin[J].Oil and Gas Geology,2004,25(3):279～293.
[7]夏义平,刘万辉,徐礼贵,等.走滑断层的识别标志及其石油地质意义[J].中国石油勘探,2007,(1):17～38.XIA Yi-ping,LIU Wan-hui,XU Li-gui,et al.Identification of strike-slip fault and its petroleum geology significance[J].China Petroleum Exploration,2007,(1):17～38.
[8]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,2004:26～317.YAO Chao,JIAO Gui-hao,WANG Tong-he,et al.Oil-bearing tectonic style of China[M].Beijing;PetroleumIndustry Press,2004:26～317.
[9]王义天,李继亮.走滑断层作用的相关构造[J].地质科技情报,1999,18(3):30～34.WANG Yi-tian,LI Ji-liang.Fault-related tectonics of the strike-slip faulting[J].Geological Science and Technology Information,1999,18(3):30～34.
[10]Ghislain D J,Ovunc M,Atilla A,et al.Characterization of strike-slip fault–splay relationships in sandstone[J].Journal of Structural Geology,2007,29(11):1831～1842.
[11]Young S K,Jim R A,David J S.Reactivated strike-slip faults:Examples from north Cornwall,UK[J].Tectonophysics,2001,340(3～4):173～194.
[12]童亨茂,宓荣三,于天才,等.渤海湾盆地辽河西部凹陷的走滑构造作用[J].地质学报,2008,82(8):1017～1026.TONG Heng-mao,MI Rong-san,YU Tian-cai,et al.The strike-slip tectonics in the western Liaohe depression,Bohai Bay basin[J].Acta Geologica Sinica,2008,82(8):1017～1026.
[13]张延玲,杨长春,贾曙光,等.辽河油田东部凹陷中段走滑断层与油气的关系[J].地质通报,2006,25(9～10):1152～1155.ZHANG Yan-ling,YANG Chang-chun,JIA Shu-guang,et al.Relationship between strike-slip faults and petroleum in the central segment of the eastern subbasin of the Liaohe oilfield,China[J].Geological Bulletin of China,2006,25(9～10):1152～1155.
[14]孙冬胜,刘池阳,杨明慧,等.冀中坳陷马西断裂带分段特征及其与油气的关系[J].石油与天然气地质,2003,24(3):238～244.SUN Dong-sheng,LIU Chi-yang,YANG Ming-hui,et al.Segmentary characteristics of Maxi fault and their relationships with oil and gas in Jizhong depression[J].Oil and Gas Geology,2003,24(3):238～244.
[15]邱旭明.苏北盆地断块圈闭分类及油气成藏特征[J].石油与天然气地质,2003,24(4):371～374.QIU Xu-ming.Classification of fault-block traps and characteristics of petroleum reservoiring in Subei basin[J].Oil and Gas Geology,2003,24(4):371～374.
[16]张心文,叶绍东,金宝林.天长地区阜宁组低渗储层特征及滚动开发对策[J].西南石油学院学报,2004,26(5):21～23.ZHANG Xin-wen,YE Shao-dong,JIN Bao-lin.Method of characteristics of low permeability reservoir and rolling development to Funing formation in Tianchang area[J].Journal of Southwest Petroleum Institute,2004,26(5):21～23.
[17]高德群,陈佳梁,李学英,等.金湖凹陷铜城断裂带低渗透储层特征研究[J].江苏地质,2005,29(3):147～151.GAO De-qun,CHEN Jia-liang,LI Xue-ying,et al.Characteristics of low permeability reservoirs of Tongcheng fault zone in Jinhu depression of Jiangsu Province[J].Jiangsu Geology,2005,29(3):147～151.
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