临南洼陷构造样式、发育机制及其对油气成藏的控制
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摘要
根据覆盖整个临南洼陷的高精度三维地震资料以及翔实的钻井资料,以构造解析和盆地动力学的理论和方法为指导,对临南洼陷的边界断层夏口断层和临邑断层的构造形态及其伴生次级断层的组合特征进行了详尽的研究,确定了自沙河街组三段沉积以来,断裂活动为具走滑性质的伸展作用;结合区域构造背景分析,认为临南洼陷为一兰聊右旋走滑断层控制的具走滑性质的伸展型盆地。在此基础上,综合该洼陷中浅层显著的低压特征以及油气藏的分布规律,表明盆地具走滑性质的伸展构造为低压流体提供了运移通道和成藏动力,并由此控制了深部油气在浅部的运聚成藏。
It was based on the lastest high-resolution 3D seismic data covered the whole Linnan Depression and well drilling data in detail,by using the theories and methods of structural analysis and basin dynamics,the structural shape and assemblage characters of the associated secondary faults of Xiakou and Linyi Faults of the boundary faults in Linnan Depression were studied in detail,by studying in detail the geometry of main faults and their secondary faults assemblage characteristics,the fault activities since Es3 sediment were the strike-slip expansion,in combination with regional tectonic analysis,it was considered that the Linnan Depression was redefined as an expanding basin controlled by Lankao-Liaocheng right-hand fault .On this basis,the characters of obvious low pressure in shallow layers and the distribution rule of the hydrocarbon reservoir were integrated .The result shows that the strike-slip expansion structure provides the migration pathways and reservoir-forming dynamics for the low-pressure liquid ,by which the deep hydrocarbon migration and accumulation is controlled in the shallow layers.
It was based on the lastest high-resolution 3D seismic data covered the whole Linnan Depression and well drilling data in detail,by using the theories and methods of structural analysis and basin dynamics,the structural shape and assemblage characters of the associated secondary faults of Xiakou and Linyi Faults of the boundary faults in Linnan Depression were studied in detail,by studying in detail the geometry of main faults and their secondary faults assemblage characteristics,the fault activities since Es3 sediment were the strike-slip expansion,in combination with regional tectonic analysis,it was considered that the Linnan Depression was redefined as an expanding basin controlled by Lankao-Liaocheng right-hand fault .On this basis,the characters of obvious low pressure in shallow layers and the distribution rule of the hydrocarbon reservoir were integrated .The result shows that the strike-slip expansion structure provides the migration pathways and reservoir-forming dynamics for the low-pressure liquid ,by which the deep hydrocarbon migration and accumulation is controlled in the shallow layers.
引文
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[2]陈书平,戴俊生,李理.惠民-东营盆地构造特征及其控油作用[J].石油天然气地质,1999,20(4):344~348.
[3]韩天佑,石硕.惠民坳陷临南地区新生代构造演化特征研究[J].东华理工学院学报,2004,27(4):309~314.
[4]戴俊生,陆克政,漆家福,等.渤海湾盆地早第三纪构造样式的演化[J].石油学报,1998,19(4):16~20.
[5]王秉海,钱凯.胜利油区地质研究与勘探实践[M].东营:石油大学出版社,1992.152~187.
[6]李三忠,周立宏,刘建忠.华北板块东部新生代断裂构造特征与盆地成因[J].海洋地质与第四纪地质,2008,24(3):57~66.
[7]于平,杨冬,杨宝俊.华北地台聊城-兰考断裂地球物理场基本特征及其构造意义[J].吉林大学学报(地球科学版),2003,33(1):106~110.
[8]李鹏举,卢华复,施央申.渤海湾盆地东濮凹陷的形成及断裂构造研究[J].南京大学学报,1995,31(1):128~139.
[9]胡贤根,谭明友,张明振.济阳坳陷东部走滑构造及其形成机制[J].油气地质与采收率,2007,14(5):42~45.
[10]王克,查明.惠民凹陷中央隆起带油气事件成藏规律[J].石油天然气学报(江汉石油学院学报),2008,30(3):5~9.
[11]赵阳,刘震,戴立昌.惠民凹陷临南洼陷异常低压与油气聚集的关系[J].西北大学学报,2004,34(6):713~716.
[12]刘晓峰,解习农.东营凹陷低压系统的特征及成因机制[J].石油与天然气地质,2002,23(1):66~69.
[13]Nemcok M,Henk A,Rodney A G.Strike-slip fault bridge fluid pumping mechanism:insights fromfield-based palaeostress analysis and numerical modeling[J].Journal of Structural Geology,2002,24(12):1885~1901.
[14]许晓明,刘震,谢启超,等.渤海湾盆地济阳坳陷异常高压特征分析[J].石油实验地质,2006,28(4):3451~350.
[15]尹伟,吴胜和,王子煜,等.油气差异泵吸作用机理探讨——以泌阳凹陷为例[J].地学前缘,2003,10(4):619~628.
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