Chen, ZhangxinYu, Renjie2020-08-172020-08-172020-08Yu, R. (2020). Methane storage and adsorption characteristics in nanoporous gas shale (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.http://hdl.handle.net/1880/112395Natural shale is mainly characterized by various mineral compositions and multi-scale pore sizes, leading to complex adsorbate-adsorbent interactions, also named the energetic heterogeneity of shale rocks. In this study, a multi-site Langmuir model was proposed to address the energetic heterogeneity, where the interaction energy for each adsorption site was related to the multi-scale pore sizes and pore surface property. Besides, methane adsorptions on shale rocks were experimentally measured, and the proposed multi-site model was used to describe the measured adsorption isotherms. Compared to the traditional single-site Langmuir model, the multi-site model can not only accurately predict the adsorption isotherms but also describe the adsorption energy distributions for shale rocks. Furthermore, the proposed multi-site model was used to estimate the total Gas-In-Place (GIP) and investigate the gas contributed by individual pores. This estimation achieves more accurate results compared with the traditional method.engUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.Engineering--Petroleummaster thesishttp://dx.doi.org/10.11575/PRISM/38082