Owing to a small fluid flowing rate, it is difficult to measure and interpret the physical parameters of low permeability tight rocks by use of conventional core analysis method.
对于低渗透致密岩石的物性参数，由于流体流动速率很小，采用常规的岩心分析方法难以测量和解释。
This paper presents a new method of steady flow to solve the problem that the injection rate into cores is difficult to get steady, especially for gas in measuring relative permeability.
本文就用稳定法测量相对渗透率曲线中，存在的注入流量难以稳定的问题，提出了一种新的稳流方法。
Methods. A previously validated method for measuring permeability, based on the relaxation pressure caused by a transient-flow rate was used.
方法：以前测量通透性有效的方法主要是依靠于暂态流诱导的松弛压。
Methods. A previously validated method for measuring permeability, based on the relaxation pressure caused by a transient-flow rate was used.
方法：以前测量通透性有效的方法主要是依靠于暂态流诱导的松弛压。
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