摘要
窟窿山掩伏构造是酒泉盆地山前冲断带重要的富油构造之一,但以往受限于地震资料品质,其构造特征、变形机制存在争议。为此,以断层相关褶皱理论为指导,利用新三维地震资料,结合钻、测井等资料,开展复杂构造建模,进一步探讨窟窿山掩伏构造特征、变形机制及其对油气成藏的控制作用。研究认为,窟窿山掩伏构造整体为一个大型双重构造,发育多层逆掩滑脱构造模式,顶、底板断层之间发育3条次级滑脱断层,3个断层转折背斜堆垛叠置;构造具有南北分带、东西分段特征;逆掩滑脱断层控制油气的纵向分布,走滑性撕裂断层控制油气的横向富集程度。该成果可为下一步油气勘探指明方向。
The Kulongshan buried structure is an important oil-rich structure in the piedmont thrust belt in the Jiuquan Basin.However,its characteristics and deformation mechanism are controversial due to the limited quality of previous seismic data.For this reason,complex structure modeling is carried out with new 3D seismic data,as well as drilling and logging data,under the guidance of the faultrelated fold theory to explore the characteristics and deformation mechanism of the Kulongshan buried structure and the control of the structure over oil and gas accumulation.This study concludes that the Kulongshan buried structure as a whole is a large duplex with a structural pattern of multilayer overthrust decollement.Three secondary decollement faults have developed between the roof and floor faults,and the three fault-bend anticlines are stacked and superposed.The structure is characterized by north-south zoning and east-west segmentation.The overthrust decollement faults control the longitudinal distribution of oil and gas,while the strike-slip tear faults control the lateral enrichment of oil and gas.The above results chart the course for the oil and gas exploration in the next step.
作者
孙学栋
肖文华
白军
张元场
袁云超
陈爽
SUN Xuedong;XIAO Wenhua;BAI Jun;ZHANG Yuanchang;Yuan Yunchao;CHEN Shuang(GRC,GRI,BGP Inc.,CNPC,Zhuozhou,Hebei 072751,China;Exploration and Development Research Institute,PetroChina Yumen Oilfield Company,Jiuquan,Gansu 735019,China)
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2022年第S01期236-242,19,共8页
Oil Geophysical Prospecting
关键词
酒泉盆地
窟窿山掩伏构造
构造建模
构造特征
控藏作用
Jiuquan Basin
Kulongshan buried structure
structural modeling
structural feature
reservoir-controlling effect
作者简介
孙学栋,高级工程师,1980年生,2002年毕业于吉林大学,获勘查地球物理专业学士学位,现就职于东方地球物理公司研究院地质研究中心,主要从事地震资料解释及地质综合研究工作。河北省涿州市华阳东路东方地球物理公司科技园研究院地质研究中心,072751。Email:sunxuedong01@cnpc.com.cn
