【摘要】 采用油田天然油砂制成的人造岩心 ,在室内做模拟水驱实验 ,分析了注水量对储层渗透率及孔隙度和含水率对地层原油性质的影响 .结果表明 :随着油藏注水量的增加 ,部分颗粒沿孔道运移 ,其中一部分微小颗粒被水冲出 ,孔隙度增大 ,而大多数颗粒滞留在孔隙中 ,形成阻塞 ,储层中岩石的渗透率降低 ,亲水性增强 ;油田注水后 ,随着含水率的上升 ,地层油中轻烃组分及其它气体在水中溶解 ,地层油发生了氧化及生物化学反应 ,致使地层油的饱和压力、溶解气油体积比、体积系数、压缩系数均降低 ,而粘度、密度值增大 .更多还原

【Abstract】 We make a simulation test in the laboratory with artificial core model that is made of pure natural oil sand, results show that rock property, porosity and wettability will increase when injection water quality increases, stickiness, density increase and oil saturation pressure, dissolved gas-oil ratio, volume compressibility, oil compressibility drop. This is because some of rock pellet move along rock pore and most of them stay in the cock pore after the oil field is injected with water. On the other hand, there is clay in the rock pellet, clay will expand when it meets water. Light hydrocarbon and other in the oil will dissolved in water and stratum oil will oxidize when injection water quality creases.更多还原