引言井轴附近地层的研究,对于说明地质情况很重要。一般要求用微电极系资料在井剖面上划分渗透层,确定有效厚度、泥饼厚度、环带深度、冲洗带深度和电阻率、残余油饱和度、孔隙度,按泥饼形成的速度求渗透率。微电极测井广泛用于石油、天然气、煤炭和水文地质勘探中。但微电极的应用因极板尺寸和泥浆电阻 Introduction The study of the formation near the shaft axis is very important for explaining the geological conditions. It is generally required to divide the permeable layer on the well section with the data from the microelectrode to determine the effective thickness, the thickness of the mud cake, the depth of the ring zone, the depth of the wash zone and the resistivity, the residual oil saturation and the porosity, and the permeation rate rate. Microelectrode logging is widely used in petroleum, natural gas, coal and hydrogeological exploration. However, the application of microelectrode due to plate size and mud resistance