东北石油大学学报2018，Vol.42Issue(6)：1-9,前插1,10.DOI:10.3969/j.issn.2095-4107.2018.06.001
王府断陷上侏罗统火石岭组火山岩类储层孔隙类型及微观结构特征
Pore types and micro pore-structure of upper Jurassic Huoshiling formation in Wangfu rift
摘要
Abstract
Pore types of Jurassic Huoshiling formation in Wangfu rift of the southern Songliao basin were identified as thin-sections, largeand small-scale pore structures were analyzed through visual thin-sections and mercury injection experiment respectively.Finally, micro-structure characteristic of Jurassic Huoshiling formation was revealed.Huoshiling formation is dominated by secondary pores and fractures, while the former mainly comprise dissolution pores and devitrified micropore, the latter are generally structure fractures and corrosion fractures.Lava is dominated by devitrified micropores, and volcanic clastic rocks are characterized by dissolved pores and structure fractures, and lava-volcanic clastic rocks are mainly dissolved pores and devitrified micropores.The reservoir quality is generally controlled by the dissolution, dehydration, structure, etc.The coupling of dissolution and fracture enhances reservoir capacity and improves flow property.The thin section reveals that the large-scale pore system varies with lithology.In terms of mean pore throat radius and mean coordination number, large-scale pore systems are developed in pyroclastic rocks and lava pyroclastic rocks.The mercury pressure test reveals that the micropore structure of volcanic lava and lava-pyroclastic rock is better than the volcaniclastic rock.The small-scale pore structure of the volcanic reservoir is divided into three types.Among them, the pore structure of type I is basically undeveloped.Breccia lava, coarse ante, tuff and condensate lava with typeⅡandⅢ pore structure indicate high-quality reservoir.Different from that, rhyolite, rough rock and volcanic breccia is dominated by typeⅢ pore structure, suggesting poor-quality reservoir.关键词
孔隙类型/微观结构/上侏罗统/火石岭组/王府断陷/松辽盆地Key words
pore types/micro pore-structure/upper Jurassic/Huoshiling fomation/Wangfu rift/Songliao basin分类
能源科技引用本文复制引用
黄玉欣,阮宝涛,李忠诚,宋文礼,胡望水..王府断陷上侏罗统火石岭组火山岩类储层孔隙类型及微观结构特征[J].东北石油大学学报,2018,42(6):1-9,前插1,10.基金项目
国家科技重大专项 (2016ZX05047-005) （2016ZX05047-005）
