Adsorption Characteristics of Shale to CH_4 Based on Adsorption Potential Theory

作者：Jia Xiong · 发表于：Keji daobao · 年份：2014 · 被引用次数：3 · 研究领域：Hydrocarbon exploration and reservoir analysis、Atmospheric and Environmental Gas Dynamics、Coal Properties and Utilization

Methane adsorption properties of shale gas reservoirs are the premise and foundation for shale gas reservoir development,and have an important influence on resource forecast and productivity evaluation. Based on the measured isotherm data under different temperature and adsorption potential theory, the e-ω adsorption characteristic curve can be drawn and is described by analyzing and treating the isotherm data. The result shows that the e-ω adsorption characteristic curve of shale to CH4 is unique and independent of temperature, which can forecast methane adsorption at different temperature and obtain the adsorption isotherm of shale to CH4. The density of adsorbed phase plays an important role in forecasting the methane adsorption by the e-ω adsorption characteristic curve, which is relevant to the accuracy of methane adsorption forecast. Therefore, the calculation method of the density of adsorbed phase needs further studies.