开鲁盆地陆东凹陷后河地区页岩层系原油地球化学特征  

The Geochemical Characteristics of Crude Oil in the Shale System in Houhe Area of Ludong Sag of Kailu Basin

作　　者：刘海艳[1] 李德华 田涯 何绍勇[1] 崔宇晶 李秀明[1] 秦喜春 范家铭 李丽[1] LIU Haiyan;LI Dehua;TIAN Ya;HE Shaoyong;CUI Yujing;LI Xiuming;QIN Xichun;FAN Jiaming;LI Li(Exploration and Development Research Institute of Liaohe Oilfield Branch Company,PetroChina,Panjin Liaoning 124010,China;Liaohe Oilfield(Panjin)Gas Storage Co.,Ltd.,PetroChina,Panjin Liaoning 124010,China)

机构地区：[1]中国石油辽河油田分公司勘探开发研究院,辽宁盘锦124010 [2]中国石油辽河油田(盘锦)储气库有限公司,辽宁盘锦124010

出　　处：《重庆科技学院学报（自然科学版）》2024年第3期1-7,共7页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：中国石油天然气股份有限公司科学研究与技术开发项目“渤海湾及外围盆地风险勘探领域和目标研究、工程技术攻关及现场试验”(2022KT0502);辽河油田重大科技专项“辽河油田页岩油资源发现及地质工程一体化研究”(2023KJZX-01)。

摘　　要：依据开鲁盆地陆东凹陷后河地区白垩系九上段Ⅱ、Ⅲ油组页岩油的分析化验测试资料,从多方面对其原油地球化学特征进行综合评价。研究结果表明:该油组页岩油为中质普通稠油;原油呈单峰偏后峰型分布,主峰碳以nC23为主,生物标志化合物具有五环萜烷、三环萜烷含量均较高的特征;原油的成烃母质形成于强还原—还原的微咸水—半咸水湖相沉积环境,原油具有低成熟度特征。此外,九上段原油不同油组的生物标志化合物参数存在差异,且页岩内形成的油藏运移距离有限,反映了其中各页岩油藏为独立生烃聚集系统,自生自储、内源成藏的特征。According to the analysis and testing data of shale oil in theⅡ-Ⅲoil reservoir groups in the upper mem-ber of Jiufotang formation of the Early Cretaceous in Houhe area of Ludong sag of Kailu basin,the low mature shale oil is comprehensively evaluated by analyzing the physical properties,group composition,saturated hydrocarbon chromatography and mass spectrometry of the crude oil.The research results show that the shale oil of theⅡ-Ⅲoil reservoir groups are the medium ordinary heavy oil.The crude oil is distributed in a single peak to a rear peak type.The main peak carbon is mainly nC23.The biomarkers of crude oil are characterized by high pentacyclic ter-pane content and high tricyclic terpane content.The hydrocarbon generating parent material of crude oil was formed in the sedimentary environment with strong reduction-reduction brackish water-semi brackish-water lake and the crude oil has low maturity characteristics.Further,the differences of biomarker parameters among different oil groups in the upper member of Jiufotang formation and the migration distance of the reservoir formed in the shale is limited.They indicate that each shale reservoir is an independent hydrocarbon generation and accumulation system which has the characteristics of self-generation and self-storage and endogenous accumulation.

关 键 词：开鲁盆地 陆东凹陷 后河地区 九上段 生物标志化合物 页岩油 低熟原油 

分 类 号：P618[天文地球—矿床学]