| 辽河油田大民屯凹陷东部陡坡带的构造演化特征 |
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| 引用本文： | 张玮,李明杰,孙增玖,李洪革.辽河油田大民屯凹陷东部陡坡带的构造演化特征[J].现代地质,2008,22(4). |
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| 作者姓名： | 张玮 李明杰 孙增玖 李洪革 |
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| 作者单位： | 1. 中国石油,东方地球物理勘探有限责任公司,河北,涿州,072751
2. 中国石油,东方地球物理勘探有限责任公司,河北,涿州,072751;中国地质大学,能源学院,北京,100083 |
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| 摘 要： | 通过叠前时间偏移三维连片地震资料的对比解释,对辽河油田大民屯凹陷的地质结构、形成演化有了新的认识。始新世至渐新世为典型的东断西超伸展型箕状断陷,东部形成陡坡带,西部为斜坡,沉积沉降中心位于荣胜堡洼陷。东部陡坡带构造演化主要经历了伸展裂陷、压扭走滑断裂系改造、坳陷和挤压反转4个阶段。早期伸展断层被后期压扭断裂系改造后形成多种构造样式和圈闭,这些构造圈闭紧邻生油洼陷,具有优越的成藏条件,尤其是在原始伸展断面基础上形成的花状构造带、挤压背斜、逆冲断块、浅层反转构造等均具有良好的勘探前景。
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| 关 键 词： | 陡坡带 走滑断裂系 反转构造 大民屯凹陷 辽河油田 |
The Characteristics of Structural Evolution of the Steep Slope Zone of the Eastern Part of the Damintun Depression, Liaohe Oilfield |
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| ZHANG Wei,LI Ming-jie,SUN Zeng-jiu,LI Hong-ge.The Characteristics of Structural Evolution of the Steep Slope Zone of the Eastern Part of the Damintun Depression, Liaohe Oilfield[J].Geoscience——Journal of Graduate School,China University of Geosciences,2008,22(4). |
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| Authors: | ZHANG Wei LI Ming-jie SUN Zeng-jiu LI Hong-ge |
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| Abstract: | New ideas about geological structure,formation and development of Damintun Depression in Liaohe Oilfield were obtained from interpretation and correlation of the multiple-block-jointed prestack time migration processing of 3D seismic data.Damintun Depression is a typical extensional half graben in Eocene-Oligocene time,with steep slope zone distributed in the eastern part of depression.Its slope occured in the western part of depression,and its center of deposition and subsidence located at Rongshengpu sub-sag.Structural evolution history of steep slope zone can be divided into four stages:rifting,transpressional strike-slip,depression and compressional inversion stages.Multiple structural styles and traps were formed after early extensional fault reformed by later transpressional fault system.These structural traps are near the petroliferous depression,and have the excellent accumulation conditions for reservoir.The flower structure,compressional anticline,reverse faulted-block and inversion structure in shallow layer through original extensional fault plane especially have the good exploration prospects. |
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| Keywords: | steep slope zone strike-slip fault system inversion structure Damintun Depression Liaohe Oilfield |
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