盐析法调剖堵水模拟实验研究

摘要

盐析法是调剖堵水提高采收率的有效方法。盐在醇中溶解度实验研究表明,氯化钠、乙醇是调剖剂组成的理想选择。调剖剂组分相平衡研究表明,饱和氯化钠盐水、乙醇体积比为1：1时,盐结晶量最大。油层模拟实验研究表明,渗透率越高,级差越大,段塞体积越大,同体积段塞越多,调剖效果越好,增油效果最显著。%Salting-out method is an effective way to enhance oil recovery by profile controlling and water shutting-off.According to the experiment of salt solubility in alcohol,NaCl and ethanol are the ideal profile control agents.The phase equilibrium of profile c