基于盆地演化分析的复杂断块解释方法  

Complex fault block interpretation method based on basin evolution analysis

作　　者：胡林 李涛 付大巍 薛红涛 向飞 

机构地区：[1]中海石油(中国)有限公司湛江分公司,广东湛江524057

出　　处：《油气藏评价与开发》2016年第3期9-12,共4页Petroleum Reservoir Evaluation and Development

基　　金：国家重大科技专项"南海西部海域已证实的富生烃凹陷再评价及新领域勘探方向"(2011ZX05023-001-007)

摘　　要：针对北部湾盆地乌石地区受多期构造运动影响形成的几种不同类型的断层,提出了几种不同的断层解释方法,在全三维闭合法以及逐级法解释拉张型及走滑—拉张型断层的基础上,创新性地提出了适用于后期反转改造、多期构造运动共同作用所形成的极复杂断块解释的"平面角度不整合"主干断裂识别方法,在识别出主干断裂的基础上,进一步依靠常规解释方法完成断层及层位解释,解决了研究区的断层解释困难、圈闭难以落实的难题。According to some different types of faults caused by multiphase tectonic movement in Wushi sag of northern basin, some different fault interpretation methods are proposed. According to full three dimensional closure scheme and step method, ten- sional type and strike slip--tensional type faults are interpreted, on this basis, main fracture recognition method of planar angle un- conformity is proposed, which is suitable for interpreting the extremely complex fault block formed by late inversion transformation and multiphase tectonic movement, and then fault and layer interpretations are completed by conventional methods, thereby resolv- ing the difficulties of fault interpretation and trap definition in study area.

关 键 词：走滑断层 主干断裂 复杂断块 乌石凹陷 

分 类 号：TE121[石油与天然气工程—油气勘探]