新构造运动与渤海湾盆地上第三系油气成藏
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摘要
从区域重力场、构造演化、火山活动、天然地震以及人工地震等方面的分析 ,渤海湾盆地新构造运动活跃 ,目前发现的上第三系油气藏主要分布在新构造运动相对活跃的渤中、济阳、黄骅等坳陷 ,上第三系大型油气田的形成与很多地质因素有关 ,但上新世以来的新构造运动起着关键作用 ,新构造运动不仅促进油气的富集成藏 ,而且对下第三系古油藏进行一定的调整 ,发生油气的再次运移、再次聚集而形成上第三系的次生油气藏。据地震、钻井等资料综合分析 :渤海湾盆地上第三系油气藏主要分布于继承性活动大断层下降盘的逆牵引构造中。预测新构造运动相对活跃的渤中坳陷及其周边断裂带是勘探上第三系油气藏的有利地带
Studies of regional gravitational field,tectonic evolution, volcanic activities,earthquake and seismic data show that neotectonic movements are active in Bohai Bay basin.The existing Neogene oil and gas pools are mainly distributed in depressions,such as Bozhong,Jiyang and Huanghua,where neotectonic movements are relatively active.The neotectonic movements since Pliocene play a key role in the formation of large Neogene fields,though many other geologic factors make also their contributions.The neotectonic movements would not only improve hydrocarbon accumulation,but would also modify the Paleogene palaeo pools,leading to the formation of Neogene secondary oil and gas pools through remigration and re accumulation.Comprehensive analysis of seismic and drilling data indicates that the Neogene oil and gas pools in this region are mainly distributed in the reverse drag structures on the footwalls of large inherited active faults.The Bozhong depression and the surrounding fault zones with relatively active neotectonic movements are expected to be favorable areas for exploration of Neogene oil and gas pools.
Studies of regional gravitational field,tectonic evolution, volcanic activities,earthquake and seismic data show that neotectonic movements are active in Bohai Bay basin.The existing Neogene oil and gas pools are mainly distributed in depressions,such as Bozhong,Jiyang and Huanghua,where neotectonic movements are relatively active.The neotectonic movements since Pliocene play a key role in the formation of large Neogene fields,though many other geologic factors make also their contributions.The neotectonic movements would not only improve hydrocarbon accumulation,but would also modify the Paleogene palaeo pools,leading to the formation of Neogene secondary oil and gas pools through remigration and re accumulation.Comprehensive analysis of seismic and drilling data indicates that the Neogene oil and gas pools in this region are mainly distributed in the reverse drag structures on the footwalls of large inherited active faults.The Bozhong depression and the surrounding fault zones with relatively active neotectonic movements are expected to be favorable areas for exploration of Neogene oil and gas pools.
引文
李大伟.大港探区新构造运动特征与极浅层油气评价[R].中国石油勘探院博士后出站报告,2003
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1 大港油田石油地质志编辑委员会.中国石油地质志(卷4):大港油田[M].北京:石油工业出版社,1991
2 龚再升,王国纯.渤海新构造运动控制晚期油气成藏[J].石油学报,2001,22(2):4～6
3 朱伟林,王国纯.渤海浅层油气成藏条件分析[J].中国海上油气(地质),2000,14(6):368～374
4 龚再升.对中国近海油气勘探观念变化的回顾[J].中国海上油气(地质),2002,16(2):73～80
5 邓运华.渤海上第三系油藏成因机制及勘探效益探讨[J].中国石油勘探,2003,8(2):25～28
6 米立军.新构造运动与渤海海域上第三系大型油气田[J].中国海上油气(地质),2001,15(1):21～28
7 李大伟.试论天然地震与油气成藏和开发的关系[J].新疆石油地质,2003,24(1):19～23
8 李军,王燮培.渤海湾盆地构造格架及演化[J].石油与天然气地质,1998,19(1):63～67
9 邬光辉,漆家福.黄骅盆地一级构造变换带的特征与成因[J].石油与天然气地质,1999,20(2):125～128
10 徐杰,马宗晋,陈国光,等.中国大陆东部新构造期北西向断裂带的初步探讨[J].地学前缘,2003,10(8):193～198
11 施炜,张岳桥,董树文.郯庐断裂带中段第四纪活动及其分段特征[J].地球学报,2003,24(1):11～18
12 王同和,李红革,张功成,等.中国含油气盆地构造———渤海湾盆地构造演化与油气分布规律[M ].北京:石油工业出版社,1999
13 李大伟,高修祥.地震勘探技术亦可用于油气运移研究[J].石油地球物理勘探,2001,36(4):499～507
14 郑长明.中国渤海湾海滩-极浅海域油气资源潜力[J].石油与天然气地质,1995,16(4):307～312
15 王子煜,漆家福.黄骅坳陷东部构造带新生代构造沉降史分析[J].石油与天然气地质,2000,21(2):127～129
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