关键词: 渗透率, 岩心分析, 致密层, 模型, 物理模型, 数学模型, 实验室试验

Abstract: Based on the results of study of unsteady state method,a new method is suggested in this paper. By means of "mechno-electric analogue method", core sample in a pressured container is simulated by an equivalent electrical resistance, R; and containers on the upstream and downstream side of the core sample is simulated by an electrical capacitance,C. A,physical model as well as a mathematical model is then constructed. Experimental studies by means of this model have been carried out and the results obtained are con-sistant with those obtained with corresponding theoretical model,thus, dificiencies in the measurement of parameters on a core sample with a permeability of ≤10^-5μM², and a porosity of ≤3.5% can be overcome.