摘要
目前勘探结果已证实伊通盆地西北缘不同区带构造特征的分段性导致油气差异分布。通过精细解释伊通盆地西北缘5条地震剖面分析不同区带构造变形分段性特征,并编制盆地基底断裂分布图,对研究区带分段性变形成因进行分析。结果表明:伊通盆地西北缘由南西向北东依次发育强走滑挤压型、走滑挤压型、弱走滑挤压型和强挤压型四种构造样式,在此基础上建立差异走滑叠加型盆缘“正半花状”和“分层变形、垂向叠置”两种构造模式。西北缘差异变形成因机制主要与伊通盆地发育三组盆地基底断裂有关,其中,近东西向的基底断裂转换带是西北缘构造差异性的主要成因。
At present,the exploration results have confirmed that the segmentation of structural characteristics in different zones in the northwest edge of Yitong Basin leads to the differential distribution of oil and gas.Through fine interpretation of five seismic profiles in the northwest edge of Yitong Basin,the segmented characteristics of structural deformation in different zones are analyzed,and the distribution map of basement faults in the basin is compiled to analyze the causes of segmented deformation in the study area.The results show that there are four structural styles from southwest to northeast,namely strong strike-slip extruded type,strike-slip extruded type,weak strike-slip extruded type and strong extruded type.On this basis,two structural models of differential strike-slip superposition basin margin"positive semi-flower"and"layered deformation and vertical superposition"are established.The formation mechanism of differential deformation in the northwest margin is mainly related to the development of three groups of basin basement faults in Yitong Basin.Among them,the nearly East-West basement fault transition zone is the main cause of structural difference in the northwest margin.
作者
陈凯
刘震
吴克强
贺君玲
宋立斌
揭君晓
CHEN Kai;LIU Zhen;WU Keqiang;HE Junling;SONG Libin;JIE Junxiao(CNOOC Research Institute Co.,Ltd.,Beijing 100028,China;State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum,Beijing 102249,China;Exploration Development of Jilin Oilfield Company,PetroChina,Songyuan,Jilin 138000,China;Exploration&Development Research Institute of Jilin Oilfield Company,PetroChina,Songyuan,Jilin 138001,China)
出处
《石油地质与工程》
CAS
2022年第2期6-14,共9页
Petroleum Geology and Engineering
关键词
伊通盆地西北缘
差异变形段
变形机制
基底断裂
转换带
the northwestern margin of Yitong basin
differential deformation segments
deformation mechanism
basement faulting
transfer zone
