渤海湾盆地沧东凹陷孔二段一亚段有利岩相及页岩油甜点区优选  

FAVORABLE LITHOFACIES AND SWEET SPOT OPTIMIZATION OF THE Ek_(2)^(1) SHALE OIL IN CANGDONG SAG,BOHAI BAY BASIN

作　　者：宋斯宇 陈世悦[1] 鄢继华[1] 蒲秀刚[2] SONG Si-yu;CHEN Shi-yue;YAN Ji-hua;PU Xiu-gang(School of Geosciences and Technology,China University of Petroleum,Qingdao 266580,Shandong Province,China;Exploration and Development Research Institute of Dagang Oilfield Plant,CNPC,Tianjin 300280,China)

机构地区：[1]中国石油大学(华东)地球科学与技术学院,山东青岛266580 [2]中国石油大港油田公司勘探开发研究院,天津300280

出　　处：《地质与资源》2023年第2期225-232,共8页Geology and Resources

基　　金：国家自然科学基金项目“湖相盆地细粒混合沉积岩形成机理及油气地质意义研究”(编号41572087)。

摘　　要：为了优选出目标层位页岩有利岩相与预测页岩油分布甜点区,采用主成分分析法(PCA),对页岩油资源量(滞留烃)、物性(孔隙度、渗透率)、工程性质(脆性指数、岩石力学参数)3个主地质成分进行分析.结果表明,纹层状长英质页岩相与纹层状混合质页岩相滞留烃含量高、孔渗性好且脆性指数偏大;王官屯、七里店以南、沈家铺东南地区为页岩油分布甜点区,具有较好油气显示.To optimize the favorable lithofacies of shale and predict the sweet spots of shale oil distribution in the first sub-member of the second member of Kongdian Formation(Ek21),the principal component analysis(PCA)is used to analyze three main geological components of shale oil,including resources(retained hydrocarbon),physical properties(porosity and permeability)and engineering properties(brittleness index and rock mechanics parameter).The results show that the lamellar felsic shale facies and lamellar mixed shale facies have high retained hydrocarbon content,with good porosity and permeability,and high brittleness index.Areas such as Wangguantun,south of Qilidian and southeast of Shenjiapu are all sweet spots of shale oil distribution with good oil-gas show.

关 键 词：主成分分析法 滞留烃 孔隙度 渗透率 页岩油甜点区 渤海湾盆地 

分 类 号：P618.13[天文地球—矿床学]