作　　者： (贾艺博）; (董伟）; (刘杰）; (王晓兵）;

机构地区： 成都理工大学能源学院,四川成都610059

出　　处： 《石油化工应用》 2017年第8期98-103,共6页

摘　　要： 油田开发过程中,由于长期的注水开发,储层骨架颗粒、胶结物和油藏流体与注入水的作用,以及油层温度和压力的变化,油藏储层孔隙结构发生了较大变化,使注水后的储层与注水开发前在物性、孔隙结构、润湿性、非均质性等方面有较大差异。孤岛油田砂岩储层以高孔、高渗、疏松胶结为主要特征,通过对孤岛油田中一区11J11井区的低含水期、中高含水期和特高含水期的物性研究发现:(1)注水开发使储层物性不断得到改善,且越到后期改善效果越明显;(2)开发初期相互之间有关系的储集层属性,特高含水期的关系更加明显;开发初期相互之间没有关系的储集层属性,特高含水期也表现出了一定的关系;(3)由低含水期到特高含水期河道微相的渗透率增长速度快,河漫砂、边滩与天然堤微相的渗透率增长速度慢,注水开发使储层差异性更大,规律性增强。 In the process of oilfield development, the pore structure of reservoir has got lots of changes with a long period of water injection development. There are many differences for physical properties, pore structure, wettability and heterogeneity of reservoir after the water injection development, on account of the effect on skeleton particles, cement and fluid of reservoir by injected water and the change of temperature and pressure of reservoir. Sandstone reservoir is characterized by high porosity, high permeability and loose cementation in Gudao oilfield. The study, which for physical properties of low water cut period, middle-high water cut period and high water cut period in 11J11 wellblock, middle area one, Gudao oilfield, found that,（1）For the water injection development, porosity and permeability of reservoir have a distinct improvement and the effect is more obvious when come to the late water injection development.（2）The link between each other of reservoir properties in early water injection development gets more obvious in ultra-high water cut period, and no relationship between each other of reservoir properties in early water injection development, it shows a certain relationship in ultra-high water cut period.（3）The permeability of channel microfaceies grow fast, while the permeability of river flood sand beach, marginal bank and the nature levee microfacies grow slow, from low water cut period to ultra-high water cut period.Water injection development makes the heterogeneity of reservoir gets more serious and the regularity enhances.

关 键 词： 疏松砂岩 注水开发 孔隙度 渗透率 沉积相