Investigation on the adsorption kinetics and diffusion of methane in shale samples
© 2018 Elsevier B.V. Shale gas is becoming increasingly important to mitigate the energy crisis of the world. Understanding the mechanisms of gas transport in shale matrix is crucial for development strategies. In this study, methane adsorption kinetics in shale samples were measured under diffe...
| Main Authors: | , , |
|---|---|
| Format: | Journal Article |
| Published: |
Elsevier
2018
|
| Online Access: | http://hdl.handle.net/20.500.11937/71869 |
| _version_ | 1848762595040821248 |
|---|---|
| author | Zou, Jie Rezaee, M. Reza Yuan, Yujie |
| author_facet | Zou, Jie Rezaee, M. Reza Yuan, Yujie |
| author_sort | Zou, Jie |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2018 Elsevier B.V.
Shale gas is becoming increasingly important to mitigate the energy crisis of the world. Understanding the mechanisms of gas transport in shale matrix is crucial for development strategies. In this study, methane adsorption kinetics in shale samples were measured under different pressures and temperatures. The results of methane adsorption rate were fitted by the bidisperse diffusion model. Pore structure of the shale samples were characterized by low-pressure N2 and CO2 adsorption. The results showed that pressure has a negative effect on methane adsorption rate and diffusion, while the effect of temperature is positive. Combining the total organic carbon (TOC) and pore structure, methane adsorption rate and effective diffusivity were compared between all the shale samples. The methane adsorption rate under high pressure (50bar) is positively related to the TOC content. The micropore volume showed a moderate positive relation with the methane adsorption rate at 30bar. A weak positive relation exists between the TOC and effective diffusivity at low pressure and the effective diffusivity at low pressure shows an increasing trend with micropore(<2 nm) volume. A hypothetic pore model is proposed: micropore in shales controls gas diffusion as pore throat which connects pores. |
| first_indexed | 2025-11-14T10:50:03Z |
| format | Journal Article |
| id | curtin-20.500.11937-71869 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:50:03Z |
| publishDate | 2018 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-718692021-01-08T07:54:28Z Investigation on the adsorption kinetics and diffusion of methane in shale samples Zou, Jie Rezaee, M. Reza Yuan, Yujie © 2018 Elsevier B.V. Shale gas is becoming increasingly important to mitigate the energy crisis of the world. Understanding the mechanisms of gas transport in shale matrix is crucial for development strategies. In this study, methane adsorption kinetics in shale samples were measured under different pressures and temperatures. The results of methane adsorption rate were fitted by the bidisperse diffusion model. Pore structure of the shale samples were characterized by low-pressure N2 and CO2 adsorption. The results showed that pressure has a negative effect on methane adsorption rate and diffusion, while the effect of temperature is positive. Combining the total organic carbon (TOC) and pore structure, methane adsorption rate and effective diffusivity were compared between all the shale samples. The methane adsorption rate under high pressure (50bar) is positively related to the TOC content. The micropore volume showed a moderate positive relation with the methane adsorption rate at 30bar. A weak positive relation exists between the TOC and effective diffusivity at low pressure and the effective diffusivity at low pressure shows an increasing trend with micropore(<2 nm) volume. A hypothetic pore model is proposed: micropore in shales controls gas diffusion as pore throat which connects pores. 2018 Journal Article http://hdl.handle.net/20.500.11937/71869 10.1016/j.petrol.2018.08.010 http://creativecommons.org/licenses/by/4.0/ Elsevier fulltext |
| spellingShingle | Zou, Jie Rezaee, M. Reza Yuan, Yujie Investigation on the adsorption kinetics and diffusion of methane in shale samples |
| title | Investigation on the adsorption kinetics and diffusion of methane in shale samples |
| title_full | Investigation on the adsorption kinetics and diffusion of methane in shale samples |
| title_fullStr | Investigation on the adsorption kinetics and diffusion of methane in shale samples |
| title_full_unstemmed | Investigation on the adsorption kinetics and diffusion of methane in shale samples |
| title_short | Investigation on the adsorption kinetics and diffusion of methane in shale samples |
| title_sort | investigation on the adsorption kinetics and diffusion of methane in shale samples |
| url | http://hdl.handle.net/20.500.11937/71869 |