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使用高压半渗透隔板法测得的毛细管压力数据在实验室内可以系统地评价地层伤害的程度。该方法是利用阈压的相对变化及毛细管压力和残余润湿相饱和度的变化,测定不同处理液对岩芯的伤害程度。该研究结果可用于实验室内筛选油田常用的钻井液、完井液与增产液系列和优选各种处理液的浓度。
Capillary pressure data measured using the high-pressure semi-permeable barrier method can be used to systematically assess the extent of formation damage in the laboratory. The method utilizes the relative change of the threshold pressure and the change of the capillary pressure and the saturation of the residual wetting phase to determine the damage degree of the core to the different treatment solutions. The results of this study can be used in laboratories to screen oilfield commonly used drilling fluid, completion fluid and stimulation fluid series and preferably a variety of treatment solution concentration.