页岩气含量测试及其方法的确定

Research on the test of shale gas content

我国页岩气资源丰富且分布广,而页岩气含量对页岩气资源评价与有利区块选取极为关键,该参数是衡量某页岩气区块是否具有开采价值的一个至关重要的指标。基于页岩气含量参数的重要性,通过大量实验研究和调研,明确目前页岩气含量测试主要有直接和间接两种方法,前者包括保压取芯测定法、解吸法、密闭取芯测定法等;后者包括等温吸附实验法与测井解释法等。通过分析各种测试方法的原理,结合个别方法的实测案例结果,研究探讨页岩气含量测试方法。

Shale gas resources in China are rich and widely distributed,and shale gas content is very critical to the evaluation of shale gas resources and the selection of favorable blocks. Shale gas content is a key index to measure whether a shale gas block has exploitation value or not. At present,shale gas content is mainly measured by direct and indirect methods,the direct test includes pressure-holding coring method,desorption method and sealed coring method,and the indirect test includes isothermal adsorption experiment method and well interpretation method. Based on the analysis of the principle of various test methods and some practical cases,the determination method of shale gas content was discussed.