用分形理论确定m,n值的方法及其应用

含油饱和度Ｓｗ是测井解释必须确定的参数之一，也是最难求准的参数之一。自从阿尔奇公式问世以来，测井解释一直沿用它来求取Ｓｗ，长期的实践证明了阿尔奇公式的正确性，但由于阿尔奇公式中有较多的可变参数，使得Ｓｗ的求取带有很大的技术性和经验性。本文给出一种确定公式中ｍ、ｎ值的新方法，该方法利用测井资料与地层的分形特性连续求得地层的ｍ、ｎ，然后通过阿尔奇公式确定Ｓｗ的值。该方法在宝浪油田油气评价中进行了试用，

Determining m and n Values With Fractal Theory and Its Application.

S W is an indispensable parameter in log interpretation but very difficult to determine precisely, for which Archie equation has been used since it emerged. The effectiveness of Archie equation has been proved by practice. Since there are quite a few variables involved in Archie equation, S W has to be obtained with local experience and sophisticated technique. A new method to determine m and n values by fractal theory is presented in this paper, by which m and n values are obtained from logging data and the formation fractal features. And then S W is easily derived by Archie equation. The application of this method in Baolang Oilfield indicates that the result from the new method is more precise than that from the conventional one.