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利用人造岩心,分析了碱水驱油过程中不同质量浓度、不同孔隙体积倍数的流度控制剂(聚丙烯酰胺溶液)对碱水驱油采收率的影响.结果表明,有流度控制的热碱水驱采收率比无流度控制的热碱水驱采收率高;相同聚合物溶液质量浓度情况下,碱水驱后的采收率随注入聚合物溶液孔隙体积倍数的增大而增大,而相同聚合物溶液孔隙体积倍数情况下,碱水驱后的采收率随注入聚合物溶液质量浓度的增大而增大.该实验条件下,最佳的流度控制剂孔隙体积倍数为1.22,质量浓度为1.5g/L.
Using artificial cores, the effect of flow control agent (polyacrylamide solution) with different mass concentration and different pore volume times on the oil recovery by alkali flooding was analyzed. The results show that the flow control The recovery rate of hot-alkali-water flooding was higher than that of hot-alkali-water flooding without flow control. Under the same polymer solution concentration, the recovery after alkali-water flooding increased with the increase of the pore volume multiplied by the injected polymer solution And the pore volume increase of the same polymer solution, the recovery ratio after alkali water flooding increases with the mass concentration of polymer solution injected into the polymer solution.Under the experimental conditions, the best porosity of the flow control agent Volume multiples of 1.22, the mass concentration of 1.5g / L.