渤海湾盆地东营凹陷扭张断裂成因模式及控藏作用  

Genetic model of transtensional faults in Dongying Depression,Bohai Bay Basin,and its controls over hydrocarbon accumulation

作　　者：张伟忠[1,2] 张云银[2] 查明[1] 曲志鹏[2] 于景强 张林[2] 何畅 Zhang Weizhong;Zhang Yunyin;Zha Ming;Qu Zhipeng;Yu Jingqiang;Zhang Lin;He Chang(School of Geosciences,China University of Petroleum(East China),Qingdao,Shandong 266580,China;Geophysical Research Institute of Shengli Oilfield Branch Company,SINOPEC,Dongying,Shandong 257022,China)

机构地区：[1]中国石油大学(华东)地球科学与技术学院,山东青岛266580 [2]中国石化胜利油田分公司物探研究院,山东东营257022

出　　处：《石油与天然气地质》2019年第2期262-270,共9页Oil & Gas Geology

基　　金：国家科技重大专项(2017ZX05072);中国石化重点科技攻关项目(P15084)

摘　　要：扭张断裂构造特征的精细刻画及控藏作用的分析是我国东部高成熟油田精细化油藏评价的重要方向。基于扭张断裂几何学特征及构造演化特征的分析,开展了渤海湾盆地东营凹陷扭张断裂成因模式的研究,建立了东营凹陷扭张断裂控藏模式。研究表明,东营凹陷扭张断裂可划分为帚状、侧接及雁列3种类型。帚状扭张断裂表现为先张后扭的特征,由单条断裂逐渐向帚状演化;侧接扭张断裂表现为先扭后张的特征,由雁列式向侧接演化;雁列扭张断裂表现为边扭边张的特征,由早期单条断裂向雁列式扭张断裂演化。扭张断裂的差异演化形成了启闭耦合的控藏模式,为扭张型盆地内的精细油藏勘探开发提供了有利的指导。Study on the structural characteristics of transtensional faults and their controls on hydrocarbon accumulation is of great significance to the fine reservoir evaluation in the highly-explored areas of eastern China.The genetic model of transtensional faults in the Dongying Depression,Bohai Bay Basin,was studied,and the accumulation model controlled by transtensional faults in this area was established,on the basis of the geometrical and evolutionary characteristics of the transtensional faults.Research shows that,the transtensional faults in the Dongying Depression can be divided into three types,the broom-shaped,en echelon and juxtaposition faults.The broom-shaped transtensional faults are characterized by early extension and later transformation,with the structural style evolving from a single fault to a broom-shaped fault zone.While the juxtaposition transtensional faults feature early transformation and later extension,with its structural style evolving from the en echelon to the juxtaposition type.The en echelon transtensional faults are characterized by simultaneous transformation and extension,with its structural style evolving from a single fault at early stages to the en echelon fault zone.The differential evolution of transtensional faults leads to the model of controls over hydrocarbon accumulation with open-close coupling,providing a guidance for the fine exploration and development of reservoirs in transtensional basins.

关 键 词：构造演化 成因模式 控藏作用 扭张断裂 东营凹陷 渤海湾盆地 

分 类 号：TE121.1[石油与天然气工程—油气勘探]