柴达木盆地英雄岭构造带油气成藏条件与有利勘探区带  

Hydrocarbon accumulation conditions and favorable exploration plays in Yingxiongling structural belt,Qaidam Basin

作　　者：龙国徽 王艳清 朱超 夏志远 赵健 唐鹏程 房永生 李海鹏 张娜 刘健 LONG Guohui;WANG Yanqing;ZHU Chao;XIA Zhiyuan;ZHAO Jian;TANG Pengcheng;FANG Yongsheng;LI Haipeng;ZHANG Na;LIU Jian(Research Institute of Exploration and Development,PetroChina Qinghai Oilfield Company,Dunhuang 736202,Gansu,China;PetroChina Hangzhou Research Institute of Geology,Hangzhou 310023,China)

机构地区：[1]中国石油青海油田分公司勘探开发研究院,甘肃敦煌736202 [2]中国石油杭州地质研究院,杭州310023

出　　处：《岩性油气藏》2021年第1期145-160,共16页Lithologic Reservoirs

基　　金：国家科技重大专项“岩性地层油气藏成藏规律、关键技术及目标评价”(编号:2017ZX05001-002);中国石油科技专项“柴达木盆地建设高原大油气田勘探开发关键技术研究与应用”(编号:2016E-01)联合资助。

摘　　要：为明确英雄岭构造带油气成藏条件、探究油气勘探领域及勘探方向,利用钻井油气显示、有机地球化学、铸体薄片鉴定、实验测试、地球物理、试油气等资料,开展英雄岭构造油气成藏条件分析与有利勘探区带预测。结果表明:油气成藏条件上,明确发育多套烃源岩,主要烃源岩分布在古近系下干柴沟组上段、新近系上干柴沟组;存在碎屑岩、湖相碳酸盐岩和混积岩3类油气储集体;形成源储一体型、上生下储型、下生上储型3种源-储组合关系;英雄岭构造带具有烃源岩条件优越、油气资源基础好,储层类型多样、储集性能优越,晚期构造活动与油气生排烃期匹配性好、油气持续充注条件优越等有利的油气成藏条件。有利勘探区带及领域上,提出古近系碎屑岩(三角洲前缘砂体)勘探方向在构造带的花土沟-红柳泉、油砂山-尕斯等地区,碳酸盐岩勘探方向在构造带的英西-游园沟和尕斯-跃进等地区;新近系碎屑岩(滨浅湖滩坝砂)勘探方向在构造带的狮子沟-花土沟-游园沟-油砂山-英东及其以西地区,碳酸盐岩(藻灰岩、混积岩及灰云岩)勘探方向在构造带东侧的油泉子-开特-黄瓜峁等地区。该研究成果表明英雄岭构造带具有多层系、多类型的立体勘探特征,是发现大型油气田的有利勘探区带。In order to ascertain the hydrocarbon accumulation conditions in Yingxiongling structural belt,and to explore the oil and gas exploration field and exploration direction,through the data of oil and gas showed in drilling,organic geochemistry,polarized light microscope thin-section investigation,experimental test,geophysics,oil and gas testing,the geological conditions of oil and gas accumulation were analyzed,and favorable exploration plays were predicted.The results show that on reservoir conditions,multiple sets of source rocks are developed,mainly in the Upper of Lower Ganchaigou Formation of Paleogene and the Upper Ganchaigou Formation of the Neogene.There are three types of oil and gas reservoirs,namely clastic rocks and lacustrine carbonate rocks and diamictite,and three types of source-reservoir assemblages namely integrated source-reservoir type,upper-source and lower-reservoir type,and lower-source and upper-reservoir type.Yingxiongling structural belt has favor-able hydrocarbon accumulation conditions,such as superior source rock conditions,good oil and gas resource foundations,various reservoir types,excellent reservoir performance,good matching between late tectonic acti-vity and hydrocarbon generation and expulsion period,and favorable conditions for continuous oil and gas filling.For favorable exploration areas,the exploration direction of Paleogene clastic rocks(delta front sand bodies)is in Huatugou-Hongliuquan and Youshashan-Gasi areas in the structural belt,and the exploration direction of carbonate rocks is in Yingxi-Youyuangou and gasi-Yuejin areas in the structural belt.The exploration direction of Neogene clastic rocks(coastal beach bar sand)is in Shizigou-Huatugou-Youyuangou-Youshashan-Yingdong and the west areas in the structural belt.The exploration direction of carbonate rocks(algae limestone,mixed rock and lime dolomite)is in Youquanzi-Kate-Huangguamao areas on the east side of the structural belt.The results show that Yingxiongling structural belt has the exploration potential to disco

关 键 词：成藏条件 油藏特征 混积岩 干柴沟组 勘探领域 柴达木盆地 

分 类 号：TE122[石油与天然气工程—油气勘探]