利用SVM方法计算中国南方X盆地页岩气含气量

Using SVM to calculate gas content of shale gas in X Basin in southern China

主要研究了一种新的计算页岩气层含气量的计算方法,虽然这方面的研究已有很多,如统计计算方法,饱和度模型计算方法等,但精度难以保证,参数很难确定。本文利用支持向量机(SVM)方法对中国南方地区X盆地页岩气层含气量进行评价。把含气量分成两部分求取,即通过SVM方法计算吸附气含气量,并与岩芯数据进行对比;再利用常规方法计算游离气含气量,二者相加得到总含气量。这种方法弥补了前两类方法的不足,较为准确地计算出页岩气层的含气量。

This paper studies a new method for calculating the gas content of shale gas reservoirs. Although there are a lot of researches in this area,such as statistical methods,saturation model methods and so on,it is still difficult to ensure the accuracy and determine the related parameters. In this paper,we use Support Vector Machine（ SVM） to calculate the gas content of shale gas in X Basin in southern China. The total gas content is divided into two parts： absorbed gas and free gas. The absorbed gas is calculated by the SVM method and compared with the core data; the free gas is calculated by conventional method. The total gas content is obtained by adding the two parts. This method can compensate for the lack of the two former methods and calculate gas content more accurately in the shale gas reservoirs.