库车坳陷南部斜坡带隐蔽圈闭发育模式及勘探方向  

Development model and exploration direction of subtle traps in the southern slope of Kuqa Depression

作　　者：齐育楷 郭景祥 罗亮 骆福嵩 周学文[1] 姚威 张坦 林会喜[1] QI Yukai;GUO Jingxiang;LUO Liang;LUO Fusong;ZHOU Xuewen;YAO Wei;ZHANG Tan;LIN Huixi(Sinopec Research Institute of Petroleum Exploration&Production,Beijing 100083,China;School of Geology and Mining Engineering,Xinjiang University,Urumqi 830017,China;Northwest Oilfield Company,Sinopec,Urumqi 830011,China;Wuxi Research Institute of Petroleum Geology,Sinopec Research Institute of Petroleum Exploration&Production,Wuxi 214126,Jiangsu,China)

机构地区：[1]中国石化石油勘探开发研究院,北京100083 [2]新疆大学地质与矿业工程学院,乌鲁木齐830017 [3]中国石化西北油田分公司,乌鲁木齐830011 [4]中国石化石油勘探开发研究院无锡石油地质研究所,江苏无锡214126

出　　处：《岩性油气藏》2023年第5期108-119,共12页Lithologic Reservoirs

基　　金：中国科学院先导A项目“深层油气富集规律与战略选区”(编号:XDA14010406)资助。

摘　　要：通过对库车坳陷南部斜坡带典型隐蔽油气藏的解剖,梳理了其圈闭发育的构造、沉积学条件、圈闭发育类型和模式并指出有力勘探方向。研究结果表明:(1)库车坳陷南部斜坡带主要发育地层超覆圈闭、砂岩上倾尖灭岩性圈闭以及断裂-岩性复合圈闭3种类型的隐蔽圈闭。(2)新和地区及邻区发育北向物源叠加后期构造掀斜改造形成的砂岩上倾尖灭圈闭群以及古隆起控制下发育的规模扇三角洲地层超覆圈闭2种类型,其中砂岩上倾尖灭圈闭是下一步主要勘探目标。(3)研究区巴什基奇克组顶部发育湖侵体系域,湖侵泥岩分隔多方向物源体系,可形成规模岩性圈闭。三叠系烃源岩在新和地区已达至成熟—高成熟演化阶段“,双源供烃”体系为该地区隐蔽油气藏提供了充足的油气源,具有较大的勘探潜力。Through the dissection of typical subtle oil and gas reservoirs in the southern slope of Kuqa Depression,the structure,sedimentological conditions,trap development types and models of subtle traps were sorted out,and the exploration direction was pointed out.The results show that:(1)Three types of subtle traps are mainly developed in the southern slope belt of Kuqa Depression,including stratigraphic overlap trap,sandstone updip pinchout lithologic trap and fault lithologic compound trap.(2)Two types of traps are developed in Xinhe and adjacent areas:sandstone updip pinchout traps formed by structural tilting after sedimentation and large-scale fan delta stratigraphic overlap trap developed under the control of ancient uplift,and sandstone updip pinch out trap is the main exploration target in the next step.(3)At the top of Bashijiqike Formation,a lacustrine transgressive systems tract was developed,and lacustrine transgressive mudstone separated multidirectional source systems,which can form large-scale lithologic traps.The Triassic source rock has reached mature to high mature evolution stage in Xinhe area.The“dual source hydrocarbon supply”system provides sufficient oil and gas sources for subtle oil and gas reservoirs in this area,which has great exploration potential.

关 键 词：隐蔽圈闭 地层超覆 砂岩上倾尖灭 扇三角洲 巴什基奇克组 白垩系 斜坡带 库车坳陷 

分 类 号：TE121.3[石油与天然气工程—油气勘探] P618.13[天文地球—矿床学]