贾茹;王璐;孙永河;陈默;康琪;

• 1:东北石油大学CNPC断裂控藏研究室
• 2:东北石油大学黑龙江省科技创新团队"断裂变形、封闭性及与流体运移"
• 3:东北石油大学"非常规油气成藏与开发"省部共建国家重点实验室培育基地
• 4:东北石油大学地球科学学院

摘要(Abstract)：

油气源断裂是油气垂向运移的主要通道,其输导能力受自身的活动性所制约。只有在成藏关键时期活动,沟通有效的烃源岩及储层,且具有顶封能力的断裂,才能为油气的运移提供优势输导通道,使成熟烃源岩排出的大量油气能够向储层中运聚成藏。近年来,越来越多的勘探证实油气并非是围绕着整条油气源断裂分布,而是集中分布在断裂走向拐点、断裂交汇部位及断裂末端等变换构造发育的部位。变换构造发育的部位应力集中,易引发地震,地震活动会进一步激发流体运移。结合目前变换构造发育位置通常与油气分布关系密切这一现象,认为油气源断裂上变换构造发育的部位为油气的优势运移通道。以塔里木盆地库车坳陷克拉苏构造带为例,从变换构造的形成机制出发,结合坳陷内断裂的几何学特征及分布规律,将变换构造划分为4种类型:趋近型、转换斜坡型、传递断层型和撕裂断层型。在厘定油气源断裂的基础上,利用油气源断裂的断距-距离曲线等方法识别断裂上变换构造发育的部位,并结合油气藏分布规律,分析油气源断裂变换构造对油气成藏的控制作用。

关键词(KeyWords)： 前陆冲断带;油气源断裂;变换构造;垂向运移

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金重点联合基金项目(U1562214);; 国家科技重大专项(2016ZX05003-002);; 黑龙江省自然科学基金项目(QC2013C041)

作者(Author): 贾茹;王璐;孙永河;陈默;康琪;

Email:

DOI:

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