黄骅拗陷白东构造带特征及勘探意义
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摘要
在白东构造带的二次三维地震资料的基础上,本文对该区的断裂系统、构造特征及其演化和成因进行了系统研究,认为白东构造带断裂沿东西向呈“蛇形”展布,局部断层呈弧形交错且南北对掉,形成了独特的“包心菜”状构造,而且构造环环相扣,有利于圈闭形成和油气富集。该区构造主要受两期构造活动的影响,使得油气可沿切割深层生油岩的主要断层及与其交切的调节断层向构造带两翼做幕式运移,并于构造带南北两翼成藏。依成藏条件分析该构造带勘探潜力巨大,其北翼主要目的层为下第三系东营组,南翼为上第三系明化镇组和馆陶组。
On the basis of second 3-D seismic acquisition in Baidong structural zone,the paper carried out systematic study on fault system,structural feature and evolution as well as genesis,considering that the faults of Baidong structural zone appears snake-like east-west distribution,local faults are characteristics of arc crisscross and revolve from north to south,forming special cabbage-like structure,and all linked with each other, which is of benefit to trap formation and oil/gas accumulation.The structures in the region are mainly affected by two periods of structural action,which makes the oil/gas do curtain migration toward both wings of structural zone along main faults cutting deep oil source rock and adjustment faults cutting with main faults,forming reservoirs in both north and south wings of the structural zone.There is great exploration potential in the structural zone according to the analysis of reservoir conditions,the main targets in the north wing is Paleogene Ed (Eocene Dongying Formation),and Neocene Pliocene and Minocene in south.
On the basis of second 3-D seismic acquisition in Baidong structural zone,the paper carried out systematic study on fault system,structural feature and evolution as well as genesis,considering that the faults of Baidong structural zone appears snake-like east-west distribution,local faults are characteristics of arc crisscross and revolve from north to south,forming special cabbage-like structure,and all linked with each other, which is of benefit to trap formation and oil/gas accumulation.The structures in the region are mainly affected by two periods of structural action,which makes the oil/gas do curtain migration toward both wings of structural zone along main faults cutting deep oil source rock and adjustment faults cutting with main faults,forming reservoirs in both north and south wings of the structural zone.There is great exploration potential in the structural zone according to the analysis of reservoir conditions,the main targets in the north wing is Paleogene Ed (Eocene Dongying Formation),and Neocene Pliocene and Minocene in south.
引文
[1]陈昭年等.黄骅拗陷中北区和歧口凹陷断裂构造特征及古应力分析.现代地质——中国地质大学研究生院学报,1997,11(4):471~477
[2]陈福巨,杜旭东.北大港—白东构造带成因的实验解析.长春地质学院学报,1997,27(4):391~401
[3]李大伟.新构造运动与渤海湾盆地上第三系油气成藏.石油与天然气(地质),2004,25(2):170~174
[4]米立军.新构造运动与渤海海域上第三系大型油气田.中国海上油气(地质),2001,15(1):21~28
[2]陈福巨,杜旭东.北大港—白东构造带成因的实验解析.长春地质学院学报,1997,27(4):391~401
[3]李大伟.新构造运动与渤海湾盆地上第三系油气成藏.石油与天然气(地质),2004,25(2):170~174
[4]米立军.新构造运动与渤海海域上第三系大型油气田.中国海上油气(地质),2001,15(1):21~28
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