Hydrocarbon Generation, Migration, and Accumulation in the Eocene Niubao Formation in the Lunpola Basin, Tibet, China: Insights from Basin Modeling and Fluid Inclusion Analysis

作     者：Yiming Liu Jiaren Ye Qiang Cao Baolin Yang Zhongrong Liu Yiming Liu;Jiaren Ye;Qiang Cao;Baolin Yang;Zhongrong Liu

作者机构：Key Laboratory of Tectonics and Petroleum ResourcesMinistry of EducationChina University of GeosciencesWuhan 430074China Branch of Exploration CompanySINOPECChengdu 610041China 

出 版 物：《Journal of Earth Science》 (地球科学学刊（英文版）)

年 卷 期：2020年第31卷第1期

页      面：195-206页

核心收录：

学科分类：0820[工学-石油与天然气工程] 08[工学] 082002[工学-油气田开发工程] 

基　　金：financially supported by the National Science and the Technology Major Project(Nos.2016ZX05024002-003,2017ZX05032-001-004,2016ZX05027-001-005) the National Science Foundation of China(No.41672136) the Branch of Exploration Project,SINOPEC(No.G0800-14-KK-169) 

主　　题：Niubao Formation Lunpola Basin source rocks basin modeling fluid inclusions hydrocarbon migration and accumulation petroleum geology 

摘      要：The Eocene Niubao Formation is the primary research target of oil exploration in the Lunpola *** oil was extracted from Well Z1 on the northern margin of the basin in *** this study,an integrated evaluation of the source rock geothermal,and maturity histories and the fluid inclusion and fluid potential distributions was performed to aid in predicting areas of hydrocarbon *** to the abundance of organic matter,the kerogen types,maturity,and oil-sources correlate with the geochemical *** middle submember of the second member of the Niubao Formation(E2n^2-2)is the most favorable source rock based on the amount of oil produced from the E2n^2-3and E2n^***-and twodimensional basin modeling,using BasinMod software,shows that the E2n^2-2source rock started to generate hydrocarbon at 35-30 Ma,reached a maturity of Ro=0.7%at 25-20 Ma,and at present,it has reached the peak oil generation stage with a thermal maturity of Ro=0.8%to less than Ro=1.0%.By using fluid inclusion petrography,fluorescence spectroscopy,and microthermometry,two major periods of oil charging have been revealed at 26.1-17.5 and 32.4-24.6 *** oil accumulation modeling results,conducted by using the Trinity software,show a good fit of the oil shows in the wells and predict that the structural highs and lithologic transitions within the Jiangriaco and Paco sags are potential oil traps.