武清凹陷构造变形特征与油气成藏潜力分析  

Analysis of Structural Deformation Characteristics and Hydrocarbon Accumulation Potential in the Wuqing Depression

作　　者：牛子凡 马宝军 李鹏 屈燕微 何静波 李柄毅 NIU Zi-fan;MA Bao-jun;Ll Peng;QU Yan-wei;HE Jing-bo;LI Bing-yi(Hebei Key Laboratory of Strategic Critical Mineral Resources,Shijiazhuang 050031,China;Hebei GEO University,Shijiazhuang 050031,China;Geological Research Center,Geophysical Research Institute,Baoding 072750,China)

机构地区：[1]河北省战略性关键矿产资源重点实验室,河北石家庄050031 [2]河北地质大学地球科学学院,河北石家庄050031 [3]东方地球物理公司研究院地质研究中心,河北保定072750

出　　处：《河北地质大学学报》2024年第3期31-37,共7页Journal of Hebei Geo University

基　　金：中石油东方物探公司研究项目(BGPYJY2021-6779);河北地质大学第十九届学生科技基金项目(KAZ202311)。

摘　　要：武清凹陷位于冀中坳陷的北东缘,勘探程度较低,近期泗村店潜山的突破重新引起了重视。论文以最新地震数据为基础,通过地震解释和构造解析对凹陷的构造变形及地质演化进行了研究,得到如下认识:武清凹陷是一个西断东超、北断南超的弧形断陷,进一步分为大孟庄洼槽、大口屯洼槽、孙校庄洼槽和杨村斜坡四个次级单元;武清凹陷早期受控于大兴断层和宝坻断层,属于廊固—武清“箕”状大凹陷的斜坡部位,沙一段沉积时期武清凹陷受河西务断层和宝坻断层耦合变形造就了现在的形态;武清凹陷构造演化分为三个阶段,孔店组—沙二段沉积期属于大凹陷断陷的斜坡区,沙一段—东营组沉积期受两边界断裂控制断陷呈弧形,新近纪以来为拗陷阶段;凹陷的斜坡内带潜山生储盖配置较好,是下一步的勘探目标区。The Wuqing sag is located in the northeast margin of Jizhong depression,and its exploration degree is low.The recent breakthrough of buried hill in Sicundian area has aroused much attention.Based on the latest seismic data,this paper studies the structural deformation and geological evolution of the sag through seismic interpretation and structural analysis.The following conclusions are obtained:Wuqing Sag is an arc-shaped faulting depression with faulting in the westerm and northern part,and overlying in the eastern and southern part.It can be further divided into four sub-units:Damengzhuang trough,Daozun trough,Sunxiaozhuang trough and Yangcun slope.The Wuqing sag was controlled by Daxing fault and Baodi fault in the early stage,and belongs to the slope of Langgu-Wuqing"dustpan"depression.The present form of Wuqing depression was formed by the coupling deformation of Hexiwu fault and Baodi fault during the deposition of the Member 1,Shahejie Formation.The structural evolution of the Wuqing sag can be divided into three stages.The sedimentary period from Kongdian Formation to the second section of Shahejie Formation belongs to the slope of the whole faulting depression,while the sedimentary period from the first section of Shahejie Formation to Dongying Formation presents an arc shape controlled by two boundary faults,and enter a depression stage since the Neogene.The configuration of the buried hill source,reservoir,and cap within the concave slope is relatively good,making it the next explorationtarget area.

关 键 词：构造变形 断裂耦合 地质演化 潜山油气藏 廊固—武清凹陷 

分 类 号：P613[天文地球—矿床学]