石油实验地质2018，Vol.40Issue(2)：159-167,9.DOI:10.11781/sysydz201802159
济阳坳陷渤南洼陷沙河街组二段多源供烃成藏模式
Reservoir-forming pattern with multiple sources in second member of Shahejie Formation, Bonan Sag, Jiyang Depression, Bohai Bay Basin
摘要
Abstract
The second member of Shahejie Formation(Es2)in the Bonan Sag of Jiyang Depression has multiple hydrocarbon sources,both from top and bottom. Drilling, logging, seismic and testing data were applied in the analyses of Es2in view of the unclear understanding of multi-source hydrocarbon accumulation models and the low overall study level of Es2. It was concluded that the hydrocarbon in the Es2was sourced from three sets of source rocks in the upper section of the fourth member(Es4),the third member(Es3)and the first member(Es1)of Shahejie Formation. The fans and carbonate rocks at the bottom and the mudstones on the top of Es2served as favorable reservoirs and cap rocks,respectively. Faults and unconformities formed a 3D transport system,which had a significant influence on hydrocarbon migration and accumulation. The physical properties of reservoirs restricted hydrocarbon enrichment. Two reservoir-forming patterns, 'accumulation during the middle stage with two sources' and 'accumulation during the late stage with three sources', were established according to the difference of accumulation stage and source. Lithologic, structural and structural-lithologic traps were formed with single or multiple sources under these two patterns. The major accumulation stages have a trend of being late gradually from bottom to up and from the sag center to the edge.关键词
多源供烃/成藏模式/成藏主控因素/沙河街组二段/渤南洼陷/济阳坳陷/渤海湾盆地Key words
multiple-sources hydrocarbon supply/accumulation pattern/main controls for accumulation/second member of Shahejie Formation/Bonan Sag/Jiyang Depression/Bohai Bay Basin分类
能源科技引用本文复制引用
张鹏,张金功,张亮,袁义东,郝杰,杨燕..济阳坳陷渤南洼陷沙河街组二段多源供烃成藏模式[J].石油实验地质,2018,40(2):159-167,9.基金项目
国家重大专项项目"渤海湾盆地南部油气资源潜力再认识"(2011ZX05006)资助. （2011ZX05006）
