陆相基质型页岩油甜点区成熟度界限探讨--以渤海湾盆地东营凹陷沙三下-沙四上亚段为例  

Maturity limit of sweet spot area for continental matrix type shale oil:a case study of lower Es_(3) and upper Es_(4) sub-members in Dongying Sag,Bohai Bay Basin

作　　者：李志明[1,2,3] 孙中良 黎茂稳 曹婷婷[1,2,3] 钱门辉 马晓潇[4] 刘鹏 鲍云杰[1,2,3] 蒋启贵 陶国亮 张隽[1,2,3] 芮晓庆 LI Zhiming;SUN Zhongliang;LI Maowen;CAO Tingting;QIAN Menhui;MA Xiaoxiao;LIU Peng;Bao Yunjie;JIANG Qigui;TAO Guoliang;ZHANG Jun;RUI Xiaoqing(SINOPEC Key Laboratory of Petroleum Accumulation Mechanisms,Wuxi,Jiangsu 214126,China;State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development,Wuxi,Jiangsu 214126,China;Wuxi Research Institute of Petroleum Geology,SINOPEC,Wuxi,Jiangsu 214126,China;Petroleum Exploration and Production Research Institute,SINOPEC,Beijing 102206,China)

机构地区：[1]中国石化油气成藏重点实验室,江苏无锡214126 [2]页岩油气富集机理与有效开发国家重点实验室,江苏无锡214126 [3]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 [4]中国石化石油勘探开发研究院,北京102206

出　　处：《石油实验地质》2021年第5期767-775,共9页Petroleum Geology & Experiment

基　　金：国家自然科学基金项目(42090022);中国石化科技开发部项目(P20049-1)联合资助。

摘　　要：陆相基质型页岩油有望成为我国页岩油增储上产的主力页岩油类型。鉴于成熟度是控制基质型页岩油甜点区分布的重要因素,在分析我国典型陆相不同有机质类型富有机质泥页岩实测镜质体反射率R_(o)值抑制程度基础上,以渤海湾盆地东营凹陷沙三下—沙四上亚段为例,探讨了陆相基质型页岩油甜点区成熟度界限。陆相富有机质泥页岩的有机质类型越好,其实测镜质体反射率R_(o)值抑制程度越显著。东营凹陷的洼陷区沙三下亚段富有机质泥页岩现今真实成熟度(等效镜质体反射率EqVR_(o))主要介于0.69%~1.05%,沙四上亚段富有机质泥页岩EqVR_(o)值则主要介于0.74%~1.20%;综合地质与工程甜点条件的剖析,东营凹陷沙三下、沙四上亚段富有机质泥页岩基质型页岩油甜点区的现今真实成熟度EqVR_(o)值为0.74%~1.20%,4个洼陷的深洼区均具有良好的基质型页岩油商业开发前景。The matrix type shale oil will become the main contributer for increasing shale oil reserves and production in China.Maturity is an important factor for the controlling to the distribution of sweet spot area for matrix type shale oil.The vitrinite reflectance suppression ranges of continental organic rich shale with different organic matter type were analyzed,and the maturity limit of sweet spot area for continental matrix type shale oil was discussed taking the lower Es3(third member of Shahejie Formation)and upper Es4(fourth member of Shahejie Formation)sub-members of the Dongying Sag as a case study.The vitrinite reflectance suppression ranges of continental organic rich shale are positively correlated to organic matter types.The actual maturity(EqVR_(o))of organic matter rich shale of the lower Es3 in subsags of Dongying Sag was mainly at the range of 0.69%-1.05%,and that of the upper Es4 is mainly at the range of 0.74%-1.20%.Combining with the analysis of geological and engineering sweet spot conditions,the EqVR_(o) of organic matter rich shale of both two sub-members range 0.74%-1.20%.The deeper areas of four sub-sags in the Dongying Sag all have favorable prospecting of commercial development for matrix type shale oil in the lower Es3 and upper Es4 sub-members.

关 键 词：富有机质页岩 镜质体反射率 成熟度界限 基质型页岩油 甜点区 沙三下—沙四上亚段 东营凹陷 渤海湾盆地 

分 类 号：TE132.8[石油与天然气工程—油气勘探]