摘要
走滑构造逐渐成为中国东部陆相断陷湖盆重要的勘探领域,对走滑构造研究具有非常重要的勘探实践与理论意义。针对东营凹陷高青-平南断裂是否具有走滑性质认识不清的问题,应用构造解析方法对其构造属性进行了探讨研究。研究结果表明:古近系高青-平南断裂中段具有右行走滑迹象,平面和剖面分别表现为"帚状"和"似花状"断裂组合特征,其控制下的博兴洼陷沙四段-东营组沉积中心发生了自南向北迁移。野外踏勘证实,高青-平南断裂中段是区域性磁村走滑断裂向东营凹陷的延伸部分。高青-平南断裂东、西段与中段之间发育有2个变换带,为凹陷内油气和深层幔源流体的有利指向。该研究可为济阳坳陷乃至渤海湾盆地中与油气相关的走滑构造体系研究提供借鉴依据。
Strike-slip structure has gradually become a significant exploration dimension of continental fault lake basins in eastern China,and the furthering understanding of strike-slip structure shows a favorable exploration practice and theoretical significance. The structure properties of Gaoqing-Pingnan strike-slip fault were investigated to clarify its strike-slip properties through structural analysis. Research indicates that the Middle Paleogene Gaoqing-Pingnan fault shows signs of right strike slip. The lateral cross-section is characterized by a combination of "broom-shape" and "flower-shape" faults. There is a migration from south to north for the sedimentary center of Sha4-Dongying formation in the Boxing Depression. Field survey confirmed that the middle section of the Gaoqing-Pingnan fault is a regional extension of the Cicun strike-slip fault to the Dongying Sag. There are two transformation zones between the eastern,western and middle sections of the Gaoqing-Pingnan fault,which are considered as the favorable indicators for the hydrocarbon and mantle-derived fluid in the sag. This research could provide certain reference for the hydrocarbon-related strike-slip structure characterization in the Jiyang Depression and even the Bohai Bay Basin.
作者
李继岩
Li Jiyan(Sinopec Shengli Oilfield Branch Company,Dongying,Shandong 257000,China)
出处
《特种油气藏》
CAS
CSCD
北大核心
2020年第2期45-50,共6页
Special Oil & Gas Reservoirs
基金
国家科技重大专项“渤海湾盆地精细勘探关键技术”(2016ZX05006-003)。
