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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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。
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.
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.
引文
[1]黄竹安.大民屯凹陷油气藏分布规律与勘探方法[J].石油与天然气地质,1987,8(2):130-135.
[2]侯方辉,李三忠,张志,等.济阳坳陷陡坡带构造特征———以东营凹陷北坡为例[J].海洋地质动态,2006,22(2):6-8.
[3]陈绍生,单家增,许坤.大民屯凹陷安福屯潜山带裂缝形成和演化的地球动力学特性分析[J].石油勘探与开发,2003,30(4):13-15.
[4]姚继峰,廖兴明,于天欣.辽河盆地构造分析[J].断块油气田,1995,2(5):21-26.
[5]漆家福,陈发景.辽东湾—下辽河裂陷盆地的构造样式[J].石油与天然气地质,1992,13(3):272-283.
[6]陈昭年,陈发景.反转构造与油气圈闭[J].地学前缘,1995,2(3-4):96-101.
[7]王涛.中国东部裂谷盆地油气藏地质[M].北京:石油工业出版社,1997.
[8]刘和甫,李晓清,刘立群,等.走滑构造体系盆山耦合与区带分析[J].现代地质,2004,18(2):139-150.
[9]杨占宝.郯庐断裂带中新生代演化与含油气盆地形成分布综述[J].地质力学学报,2006,12(1):43-47.
[10]徐嘉炜.论走滑断层作用的几个主要问题[J].地学前缘,1995,2(1-2):122.
[11]漆家福,张一伟,陆克政,等.渤海湾盆地新生代裂陷盆地的伸展模式及其动力学过程[J].石油实验地质,1995,17(4):316-322.
[12]Sylvester A G.Strike-slip fau lts[J].Geological Society ofAm erica Bu lletin,1988,100:206-242.
[13]李晓光,陈振岩,陈永诚.大民屯凹陷低潜山勘探实践及下步勘探方向[J].中国石油勘探,2005,(4):23-28.
[14]孟卫工.辽河坳陷大民屯凹陷古近系盖层特征及对油气系统的影响[J].古地理学报,2005,7(1):25-32.
[15]谢文彦,姜建群,张占文,等.大民屯凹陷油气系统研究[J].石油勘探与开发,2004,31(2):38-42.
[2]侯方辉,李三忠,张志,等.济阳坳陷陡坡带构造特征———以东营凹陷北坡为例[J].海洋地质动态,2006,22(2):6-8.
[3]陈绍生,单家增,许坤.大民屯凹陷安福屯潜山带裂缝形成和演化的地球动力学特性分析[J].石油勘探与开发,2003,30(4):13-15.
[4]姚继峰,廖兴明,于天欣.辽河盆地构造分析[J].断块油气田,1995,2(5):21-26.
[5]漆家福,陈发景.辽东湾—下辽河裂陷盆地的构造样式[J].石油与天然气地质,1992,13(3):272-283.
[6]陈昭年,陈发景.反转构造与油气圈闭[J].地学前缘,1995,2(3-4):96-101.
[7]王涛.中国东部裂谷盆地油气藏地质[M].北京:石油工业出版社,1997.
[8]刘和甫,李晓清,刘立群,等.走滑构造体系盆山耦合与区带分析[J].现代地质,2004,18(2):139-150.
[9]杨占宝.郯庐断裂带中新生代演化与含油气盆地形成分布综述[J].地质力学学报,2006,12(1):43-47.
[10]徐嘉炜.论走滑断层作用的几个主要问题[J].地学前缘,1995,2(1-2):122.
[11]漆家福,张一伟,陆克政,等.渤海湾盆地新生代裂陷盆地的伸展模式及其动力学过程[J].石油实验地质,1995,17(4):316-322.
[12]Sylvester A G.Strike-slip fau lts[J].Geological Society ofAm erica Bu lletin,1988,100:206-242.
[13]李晓光,陈振岩,陈永诚.大民屯凹陷低潜山勘探实践及下步勘探方向[J].中国石油勘探,2005,(4):23-28.
[14]孟卫工.辽河坳陷大民屯凹陷古近系盖层特征及对油气系统的影响[J].古地理学报,2005,7(1):25-32.
[15]谢文彦,姜建群,张占文,等.大民屯凹陷油气系统研究[J].石油勘探与开发,2004,31(2):38-42.
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