油气地质与采收率2017，Vol.24Issue(3)：50-56,7.
渤海湾盆地石臼坨凸起东缘混积岩储层特征及物性主控因素
Characteristics of the mixosedimentite reservoir and its controlling factors for petrophysical properties in the eastern margin of Shijiutuo uplift, Bohai Bay Basin
摘要
Abstract
At present mixosedimentite reservoir is the most important targets in the oil and gas exploration and development of the Shahejie Formation in the Shijiutuo uplift,Bohai Bay Basin.However,there are few studies on the sedimentary characteristics and the reservoir features of the mixosedimentite.Thus systematic research on the mixosedimentite reservoir is needed.Based on the data of coring,casting thin sections,logging and testing,etc.,it is concluded that the mixosedimentite in the eastern margin of Shijiutuo uplift is the mixture of the terrigenous clastic and carbonate components.And the lithology mainly includes fine sandstone containing intraclast,medium-fine sandstone containing bioclasts,conglomerate containing bioclasts,sandy bioclasts dolomite,sandy micrite dolomite containing bioclasts-intraclast and sandy bioclasts dolomite.According to the analysis of the reservoir physical properties and the result of the diagenetic evolution,the physical properties of the mixed bioclastic beach developed in the semi-closed or closed lake-bay is the best while that of bioclastic sandy beach and the bioclastic gravelly beach developed in the fan delta front is second.The main factors controlling the reservoir physical properties are lithofacies,sedimentary facies,compaction,cementation and dissolution,among which lithofacies and sedimentary facies are the precondition for the formation of high quality reservoir.Compaction plays a less important role on physical properties of reservoirs due to its suppression.In contrast,the late diagenesis,such as cementation and dissolution,are more important for improving reservoir physical properties.关键词
混积岩/陆源碎屑岩/碳酸盐岩/储层特征/主控因素/生物碎屑/石臼坨凸起/渤海湾盆地Key words
mixosedimentite/terrigenous clastic rocks/carbonate rocks/reservoir characteristics/main controlling factors/bioclasts/Shijiutuo uplift/Bohai Bay Basin分类
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高梦天,杜学斌,叶茂松,宋章强..渤海湾盆地石臼坨凸起东缘混积岩储层特征及物性主控因素[J].油气地质与采收率,2017,24(3):50-56,7.基金项目
国家自然科学基金青年科学基金项目“南海北部深水区台缘结构与生物礁生长模型”(41202086). （41202086）
