Analyzing the Adaption of Different Adsorption Models for Describing the Shale Gas Adsorption Law |
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Authors: | Zhouhua Wang Yun Li Ping Guo Weijie Meng |
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Affiliation: | State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan, China. |
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Abstract: | The adsorption capacity of a shale gas reservoir is mainly determined by the isothermal adsorption experiment. In this study, the building conditions and performances of seven single‐component and five multi‐component adsorption models were compared and analyzed. The results show that most shale gas reservoir adsorption characteristics obey those of type I on the macroscopic scale. The adsorption isotherms of single components can be described by the Langmuir‐Freundlich, Langmuir, and Toth models. The revised Langmuir, extended Langmuir, and the loading ratio correlation (LRC) models can be applied to binary‐component mixtures; and the extended Langmuir and LRC models perform best for shale gas. The obtained results might have an important promoting effect for modeling the shortage of shale gas. |
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Keywords: | Adsorption isotherm Adsorption model Model fitting Shale gas reservoir |
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