台北凹陷第三系油气储层特征及影响因素  

Tertiary Hydrocarbon Reservoir Characteristics and Influence Factors in Taibei Depression

作　　者：罗权生 冯利平 刘文辉 曾翔宇 荆文波 刘波 

机构地区：[1]中国石油 吐哈油田分公司 勘探开发研究院,新疆哈密839009

出　　处：《吐哈油气》2005年第2期101-105,共5页Tuha Oil & Gas

摘　　要：台北凹陷第三系含油储层岩性以细砂岩为主,岩石学类型以岩屑长石砂岩和混合砂岩为主,含气储层岩性以砂砾岩为主,岩石学类型为岩屑砂砾岩。储层微观发育原生粒间孔、粘土矿物杂基内的微孔隙及微裂缝等。孔隙结构以中孔、细喉道为主,为中高孔、中—低渗型储层。通过对储层物性影响因素的研究,认为岩石组构、沉积微相、成岩作用是影响本区储层物性的主要因素。碳酸盐胶结物及自生粘土矿物导致储层物性变差。粘土矿物在转化过程所释放的酸性水对碎屑颗粒和胶结物的溶蚀作用及烃类的后期注入,一定程度上起到了对储层原生孔隙的改善和保存作用。Lithology of Tertiary oil-bearing reservoir in Taibei depression is dominated by fine sandstone, and petrology category is mainly composite of lithic greywacke sandstone and hybrid sandstone; lithology of gas-bearing reservoir is dominated by glutenite, and petrology category is lithic gluenite. Microcoscopic reservoir is characterized by original intergranular pore, micropore and microcrack in clay mineral. Pore structure is dominated by mesopore and fine throat, which belong to mid-high reservoir with porosity and mid-low permeability. By studying the influence factors to reservoir physical property, it was thought that rock composition, sedimentary microfacies, diagenesis are the main effect factors on local reservoir physical property. Carbonate cement and its clay mineral lead to reservoir physical property worse. The solution effect of acid water released in conversion of clay mineral on detrital grain and cementing material, and the later injection of hydrocarbon can properly improve and preserve the original pore of the reservoir.

关 键 词：台北凹陷 第三系 储层特征 油气 储层物性 自生粘土矿物 碳酸盐胶结物 储层岩性 长石砂岩 孔隙结构 岩石组构 沉积微相 成岩作用 溶蚀作用 碎屑颗粒 转化过程 原生孔隙 岩石学 砂砾岩 微裂缝 微孔隙 酸性水 岩屑 类型 含油 

分 类 号：P618.130.2[天文地球—矿床学] P575[天文地球—地质学]