This paper presents a method for evaluating formation damage by the use of capillary pressure data in laboratory obtained with the high pressure semipermeable-membrane.
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。
At this time, the indoor air is discharged outward by the mechanical method, so that the air pressure inside the membrane is lower than that of the outer membrane, so that the structure is stable.
此时，利用机械方法将室内空气向外排出，使膜内气压较膜外气压低，以使结构保持稳定。
The present invention relates to a polyvinylidene fluoride nano composite super low pressure ultrafiltration membrane and its preparation method.
一种聚偏氟乙烯纳米复合超低压超滤膜及其制备方法，它涉及一种纳米复 合膜及其制备方法。
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