porosity factor

If the relativity between formation factor and porosity from rock experimentation is little, the values of a and m calculated by different regression methods using the data from the same experimentation may be different.

应用岩电实验数据确定阿尔奇公式中a，m值时发现地层因素与孔隙度的相关性较差，通过不同的回归处理方法得到的a，m值有时相差较大，甚至出现一些异常的情况。

For the matrix moveout problem existed in the course of establishing sandstone porosity interpretation model u-sing the statistic method, acoustic formation factor ( AFF) equation is imported.

针对利用统计方法建立声波孔隙度解释模型过程中存在的骨架时差问题，引入了声波地层因素方程；

AFF ( acoustic formation factor) equation is an effective porosity interpretation model using sonic logging data.

AFF（声波地层因素）方程是利用声波时差资料求取地层孔隙度的一种有效的解释模型。

It was found that in double logarithmic coordinates, the relationship of formation factor and porosity is a second order function and no longer the linear formula proposed by Archie in 1940's.

在双对数坐标系中，由低孔隙到高孔隙整个范围，砂岩地层因素与孔隙率的关系为一个二次函数。

The relation between air permeability and covering factor, air permeability and porosity are discussed.

首先分析了织物紧度、孔隙率与透气性的相互关系。