济阳陆相断陷盆地页岩油研究进展  

Research progress of shale oil in Jiyang continental faulted basin

作　　者：李军亮[1,2] 刘惠民 王勇 张奎华[4] 周广清[2,4] 李政 王伟庆[1,2] 方正伟 张顺[1,2] 刘鑫金 刘鹏 张子麟[5] 魏晓亮 LI Junliang;LIU Huimin;WANG Yong;ZHANG Kuihua;ZHOU Guangqing;LI Zheng;WANG Weiqing;FANG Zhengwei;ZHANG Shun;LIU Xinjin;LIU Peng;ZHANG Zilin;WEI Xiaoliang(Exploration and Development Research Institute,Shengli Oilfield Company,SINOPEC,Dongying City,Shandong Province,257015,China;State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development,Dongying City,Shandong Province,257015,China;Shengli Oilfield Company,SINOPEC,Dongying City,Shandong Province,257000,China;Petroleum Exploration Management Center,Shengli Oilfield Company,SINOPEC,Dongying City,Shandong Province,257000,China;Research Institute of Petroleum Engineering,Shengli Oilfield Company,SINOPEC,Dongying City,Shandong Province,257200,China)

机构地区：[1]中国石化胜利油田分公司勘探开发研究院,山东东营257015 [2]页岩油气富集机理与高效开发全国重点实验室,山东东营257015 [3]中国石化胜利油田分公司,山东东营257000 [4]中国石化胜利油田分公司油气勘探管理中心,山东东营257000 [5]中国石化胜利油田分公司石油工程技术研究院,山东东营257200

出　　处：《油气地质与采收率》2024年第4期60-72,共13页Petroleum Geology and Recovery Efficiency

基　　金：国家科技重大专项“济阳坳陷页岩油勘探开发目标评价”(2017ZX05049-004);中国石化科技攻关项目“东部断陷盆地页岩油目标评价与先导试验”(P20049-3);“济阳坳陷页岩油富集高产地质控制因素及目标评价”(P23048)。

摘　　要：济阳陆相断陷盆地页岩油是现实的资源接替新领域,具有巨大勘探潜力,是胜利油田可持续发展的重要资源基础。结合近年来济阳陆相断陷盆地页岩油地质研究与勘探成效,系统梳理了济阳陆相断陷盆地页岩沉积、成储、成烃及页岩油富集理论认识、配套增产压裂技术等方面的新进展。研究表明:①提出了基于矿物组成、沉积构造、结晶程度和有机质丰度的“四要素三端元”页岩岩相划分方案,揭示了“四古控相”机制,明确了页岩岩相呈“环带状”有序分布。②集成岩心微纳米CT扫描、氩离子抛光扫描电镜、FIB-FESEM、核磁共振冻融、X射线小角散射等页岩多尺度孔缝系统量化表征技术,明确了济阳陆相断陷盆地页岩储集空间孔缝兼顾,以无机孔缝为主,揭示了方解石重结晶、溶蚀作用和伊/蒙混层向伊利石转化作用是最为主要的成储机制,构建了页岩孔缝网络储集模型。③研发了富有机质页岩含油率评价方法,揭示了咸化湖盆富有机质页岩古生产力高、早生、早富特点,初步估算济阳陆相断陷盆地页岩油资源量超过1010t。④纹层/层状页岩岩相成烃、成储时空耦合控制了页岩油富集,表现为“咸化源岩早生、无机孔缝储集、微观源储一体、二元耦合富集”模式。⑤创建了陆相断陷盆地页岩油勘探“四性”“四定”综合评价体系及目标优选流程。⑥研发了适合济阳陆相断陷盆地页岩的“组合缝网压裂”“水平井多级分段”增产压裂技术。结合胜利油田实际情况,确立了“主力洼陷增储上产、富油小洼陷探索新阵地、外围小洼陷落实资源、兼顾优化矿权”的勘探思路,有序推进济阳陆相断陷盆地页岩油规模增储建产,相关成果认识与配套技术对同类油田的页岩油勘探开发具有一定的借鉴和参考意义。Shale oil in Jiyang continental faulted basin is a realistic new field for subsequent resource,with enormous exploration potential.It is an important resource base for the sustainable development of Shengli Oilfield.The results of geological research and exploration of shale oil were analyzed in Jiyang continental faulted basin in recent years,and the new progress was systematically reviewed in shale sedimentation,reservoir formation,hydrocarbon generation,shale oil enrichment theory,and supporting fractur‐ing stimulation technologies for Jiyang continental faulted basin.The results show that①A shale lithofacies classification scheme is proposed based on mineral composition,sedimentary structure,crystallization,and abundance of organic matter,which can be summarized as“four elements and three ends.”The mechanism of“four paleo-environment factors control shale lithofacies”is re‐vealed,and the orderly“ring-shaped”distribution of shale lithofacies is confirmed.②The core micro/nano CT scanning,argon ion polishing scanning electron microscopy,FIB-FESEM,nuclear magnetic resonance freeze-thaw,and small-angle X-ray scattering are integrated to form the quantitative characterization technologies of multi-scale shale pore and fracture systems.It is clear that the spaces of the shale reservoir in Jiyang continental faulted basin are divided into both pores and fractures,mainly inorganic pores and fractures.It is revealed that calcite recrystallization,dissolution,and conversion from illite/smectite to illite are the most critical res‐ervoir formation mechanisms,and a reservoir model of shale pore and fracture network is established.③The oil content evaluation method of organic-rich shale is developed,which reveals the characteristics of high paleo-productivity,early generation,and early enrichment of organic-rich shale in the saline lake basin.The shale oil resources in Jiyang continental faulted basin are estimated to be more than 1010 t.④The shale oil enrichment is controlled by the spatiotempora

关 键 词：断陷盆地 页岩油 岩相 成储机制 游离油 综合评价体系 组合缝网压裂 

分 类 号：TE132.1[石油与天然气工程—油气勘探]