霸县凹陷文安斜坡带构造圈闭及构造油气藏
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摘要
通过分析文安斜坡地质资料和大量高质量三维地震资料发现该区构造圈闭以断块圈闭和断鼻圈闭为主。圈闭的形成与发育受构造运动控制。孔店组—沙四段,燕山晚期构造运动对研究区圈闭的发育起重要的控制作用;沙三段—沙一段,喜马拉雅Ⅰ幕构造运动对圈闭的定型起主要作用;第四纪后,构造运动基本停止,圈闭不发育。构造圈闭主要形成于沙三段—沙二段沉积期的史各庄—苏桥垒堑式断裂构造带。构造油气藏有断块、断鼻、背斜、断背斜油气藏4类。孔店组—沙四段沉积期和沙三段—沙二段沉积期形成的圈闭最有利于成藏。冀中坳陷古生界构造油气藏的勘探应集中于新近纪形成的史各庄—苏桥构造带的中、西部和赵各庄—左各庄构造带中部的断块圈闭和断鼻圈闭。
Fault-blocks and fault-nose traps could be easily seen on the Wen'an slope of Baxian Sag.The formation and development of traps were controlled by tectonic movement.From the Kongdian Formation to the forth segment of the Shahejie Formation,the Jizhong sag were influenced by the late Yanshan movement.The shape of traps was controlled by the movement in the beginning of deformation of the basin.From the third segment to the first segment of the Shahejie Formation,Himalayan Ⅰ movement dominated the formation of traps.In Quaternary,strong tectonic movement stopped,and no influence on traps could be seen.In conclusion,structural traps in the study area were mainly formed during the third to the first stage of the Shahejie Formation in Shigezhuang Suqiao horst and graben fault zone.Structural reservoirs are divided into 4 types,namely,the fault block reservoirs,broken nose reservoirs,anticline reservoirs,broken anticline reservoirs.The traps formed in the Kongdian Formation to the forth,third and second segment of the Shanhejie Formation were the most favorable reservoirs to oil accumulation.Hydrocarbon exploration on Wen'an slope of the Baxian Sag should be focused more on fault block traps and broken nose traps formed during Late Tertiary in the middle and west part of Shigezhuang-Suqiao horst and graben fault zone and in the middle and west part of Zhaogezhuang-Zuogezhuang horst and graben fault zone.
Fault-blocks and fault-nose traps could be easily seen on the Wen'an slope of Baxian Sag.The formation and development of traps were controlled by tectonic movement.From the Kongdian Formation to the forth segment of the Shahejie Formation,the Jizhong sag were influenced by the late Yanshan movement.The shape of traps was controlled by the movement in the beginning of deformation of the basin.From the third segment to the first segment of the Shahejie Formation,Himalayan Ⅰ movement dominated the formation of traps.In Quaternary,strong tectonic movement stopped,and no influence on traps could be seen.In conclusion,structural traps in the study area were mainly formed during the third to the first stage of the Shahejie Formation in Shigezhuang Suqiao horst and graben fault zone.Structural reservoirs are divided into 4 types,namely,the fault block reservoirs,broken nose reservoirs,anticline reservoirs,broken anticline reservoirs.The traps formed in the Kongdian Formation to the forth,third and second segment of the Shanhejie Formation were the most favorable reservoirs to oil accumulation.Hydrocarbon exploration on Wen'an slope of the Baxian Sag should be focused more on fault block traps and broken nose traps formed during Late Tertiary in the middle and west part of Shigezhuang-Suqiao horst and graben fault zone and in the middle and west part of Zhaogezhuang-Zuogezhuang horst and graben fault zone.
引文
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[14]侯创业,孟元林,李臣,等.成藏史数值模拟——以渤海湾盆地文安斜坡古生界为例[J].石油实验地质,2004,26(3):298-302.
[2]谢晓军,邓宏文.冀中坳陷霸县凹陷横向调节带对物源体系的控制作用[J].天然气地球科学,2008,19(3):334-338.
[3]胡望水,朱罗剑,杨申谷.霸县凹陷文安斜坡沙一段沉积相再认识[J].特种油气藏,2009,16(6):5-7.
[4]胡望水,陈毓遂,肖安成,等.塔里木盆地西南坳陷的圈闭特征及其控油作用[J].江汉石油学院学报,1996,18(2):7-12.
[5]刘生国,肖安成,胡望水.塔西南坳陷西南缘构造类型与圈闭特征[J].西安石油学院学报(自然科学版),2001,16(2):1-5.
[6]张厚福,方朝亮,高先志,等.石油地质学[M].北京:石油工业出版社,1999,243-244.
[7]胡望水,刘云,程超,等.松辽盆地南部浅层气藏的圈闭类型及特征[J].石油地质与工程,2009,23(6):21-24.
[8]万桂梅,汤良杰,金文正,等.库车坳陷西部构造圈闭形成期与烃源岩生烃期匹配关系探讨[J].地质学报,2007,81(2):187-194.
[9]何发岐,梅廉夫,费琪,等.前陆盆地前缘隆起带圈闭的形成及其含油气性——以塔里木盆地沙雅隆起为例[J].石油实验地质,2006,28(5):418-423.
[10]黄传炎,廖远涛,张青,等.板桥凹陷隐蔽油气藏类型及特征研究[J].石油地质与工程,2006,20(6):6-10.
[11]杨明慧,刘池阳,孙东胜,等.冀中坳陷的伸展构造系统及其构造背景[J].大地构造与成矿学,2002,26(2):113-120.
[12]刘计国,查明,于兴河,等.辽河盆地东部凹陷北部地区断层对油气成藏的控制作用[J].石油大学学报(自然科学版),2003,27(5):12-15.
[13]李军生,林春明.反转背斜构造自生自储油藏成藏模式[J].石油学报,2006,27(2):34-37.
[14]侯创业,孟元林,李臣,等.成藏史数值模拟——以渤海湾盆地文安斜坡古生界为例[J].石油实验地质,2004,26(3):298-302.
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