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通过建立变形介质中考虑弛张特性的一维两相粘弹性稠油驱替的数学模型 ,并进行数值求解 ,分析了地层变形以及弛张特性对水驱稠油的影响 .分析表明 :介质变形对含水饱和度的分布没有影响 ,而对地层压力的影响是非常显著的 ,随着变形介质弹性的增加 ,地层压力越来越低 ,并且越靠近注入端 ,地层压力下降越快 ;原油的弛张特性同时影响含水饱和度和地层压力的分布 ,在其它条件一定时 ,随着弛张时间的增加 ,含水饱和度越来越低 ,地层压力越来越高 .在油田开发实际中 ,应考虑地层变形和原油弛张特性的影响 ,以提高原油采收率
The mathematical model of one-dimensional two-phase visco-elastic heavy oil displacement in deformation medium considering the relaxation behavior was established and numerically solved to analyze the effect of formation deformation and relaxation characteristics on the water-flooded heavy oil. Which has no effect on the distribution of water saturation and has a significant effect on formation pressure. As the deformation medium increases, the formation pressure is getting lower and lower, and the pressure of formation decreases more rapidly as it goes to the injection end. Zhang characteristic affects the distribution of water saturation and formation pressure at the same time. When the other conditions are constant, the water saturation becomes lower and lower with the increase of relaxation time, and the formation pressure is higher and higher. In oil field development practice, Strata deformation and crude oil relaxation characteristics to improve oil recovery