斜坡区断层圈闭发育部位及其形成时期识别方法及应用——以冀中坳陷文安斜坡为例  

Recognition Method and Application of Fault Trap Position and Formation Period in Slope Area: A Case Study in Wen’an Slope, Jizhong Depression

作　　者：刘峻桥 吕延防[1] 付广[1] 胡欣蕾 史集建[1] 孙同文 Liu Junqiao;LüYanfang;Fu Guang;Hu Xinlei;Shi Jijian;Sun Tongwen(College of Earth Science,Northeast Petroleum University,Daqing 163318,Heilongjiang,China;College of Petroleum Engineering,Guangdong University of Petrochemical Technology,Maoming 525000,Guangdong,China;Guangdong Research Center for Unconventional Energy Engineering Technology,Guangdong University of Petrochemical Technology,Maoming 525000,Guangdong,China)

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318 [2]广东石油化工学院石油工程学院,广东茂名525000 [3]广东石油化工学院广东省非常规能源工程技术研究中心,广东茂名525000

出　　处：《吉林大学学报（地球科学版）》2021年第2期355-366,共12页Journal of Jilin University：Earth Science Edition

基　　金：国家自然科学基金项目(41872153,41702153);广东石油化工学院2018年科研基金项目人才引进类(2018rc06);广东省非常规能源工程技术研究中心开放基金(GF2018A007);广东省普通高校青年创新人才类项目(2018KQNCX159)。

摘　　要：断层圈闭是斜坡区重要的构造圈闭类型,为了识别斜坡区断层圈闭发育部位及其形成时期,基于断层生长机制,分析斜坡区顺向断层圈闭和反向断层圈闭形成演化过程。结果表明:顺向断层圈闭形成于断层"硬连接"阶段,发育在断层下降盘分段生长部位;反向断层圈闭形成于断层开始活动时期,发育在断层上升盘位移最大部位。在此基础上,充分利用详细三维地震资料,结合断距-距离曲线、相干体切片、断层分段生长时期定量表征以及断距回剥等技术,建立了斜坡区断层圈闭发育部位及形成时期的识别方法,并将该方法应用于冀中坳陷文安斜坡典型断层圈闭发育部位及形成时期的识别,研究结果与实际油气分布吻合关系较好。Fault trap is an important type of structures in a slope area. To identify the location and formation period of fault traps, the authors analyzed the formation and evolution process of the consequent and antithetic fault traps in the slope area on the basis of considering the formation and evolution of faults. The result suggested that the consequent fault traps were formed in the "hard-linkage" stage and developed at the segmented growth sites of the hanging wall of the fault;while the antithetic fault traps were formed at the beginning of the fault activity and developed at the site with the largest displacement of the footwall of the fault. On this basis, a method was established to identify the fault trap location and formation period combined fully with the technology of throw-distance curve, coherent slice, the quantitative representation of the fault segment growth stage, and the throw back-stripping using detailed 3 D seismic data. This method was applied to identify the fault trap location and formation period in the Wen’an slope of Jizhong depression, and the result is in accord with the actual hydrocarbon distribution.

关 键 词：顺向断层圈闭 反向断层圈闭 发育部位 形成时期 识别方法 冀中坳陷 

分 类 号：P618.13[天文地球—矿床学]