Multifractal analysis of gas adsorption isotherms for pore structure characterization of the Bakken Shale
Understanding pore heterogeneity can enable us to obtain a deeper insight into the flow and transport processes in any porous medium. In this study, multifractal analysis was employed to analyze gas adsorption isotherms (CO 2 and N 2 ) for pore structure characterization in both a source (Upper-Lowe...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
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Elsevier Ltd
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/66530 |
| _version_ | 1848761344113770496 |
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| author | Liu, K. Ostadhassan, M. Zou, Jie Gentzis, T. Rezaee, M. Reza Bubach, B. Carvajal-Ortiz, H. |
| author_facet | Liu, K. Ostadhassan, M. Zou, Jie Gentzis, T. Rezaee, M. Reza Bubach, B. Carvajal-Ortiz, H. |
| author_sort | Liu, K. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Understanding pore heterogeneity can enable us to obtain a deeper insight into the flow and transport processes in any porous medium. In this study, multifractal analysis was employed to analyze gas adsorption isotherms (CO 2 and N 2 ) for pore structure characterization in both a source (Upper-Lower Bakken) and a reservoir rock (Middle Bakken). For this purpose, detected micropores from CO 2 adsorption isotherms and meso-macropores from N 2 adsorption isotherms were analyzed separately. The results showed that the generalized dimensions derived from CO 2 and the N 2 adsorption isotherms decrease as q increases, demonstrating a multifractal behavior followed by f(a) curves of all pores exhibiting a very strong asymmetry shape. Samples from the Middle Bakken demonstrated the smallest average H value and largest average a 10- -a 10+ for micropores while samples from the Upper Bakken depicted the highest average a 10- -a 10+ for the meso-macropores. This indicated that the Middle Bakken and the Upper Bakken have the largest micropore and meso-macropore heterogeneity, respectively. The impact of rock composition on pore structures showed that organic matter could increase the micropore connectivity and reduce micropore heterogeneity. Also, organic matter will reduce meso-macropore connectivity and increase meso-macropore heterogeneity. We were not able to establish a robust relationship between maturity and pore heterogeneity of the source rock samples from the Bakken. |
| first_indexed | 2025-11-14T10:30:10Z |
| format | Journal Article |
| id | curtin-20.500.11937-66530 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:30:10Z |
| publishDate | 2018 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-665302020-04-09T05:38:14Z Multifractal analysis of gas adsorption isotherms for pore structure characterization of the Bakken Shale Liu, K. Ostadhassan, M. Zou, Jie Gentzis, T. Rezaee, M. Reza Bubach, B. Carvajal-Ortiz, H. Understanding pore heterogeneity can enable us to obtain a deeper insight into the flow and transport processes in any porous medium. In this study, multifractal analysis was employed to analyze gas adsorption isotherms (CO 2 and N 2 ) for pore structure characterization in both a source (Upper-Lower Bakken) and a reservoir rock (Middle Bakken). For this purpose, detected micropores from CO 2 adsorption isotherms and meso-macropores from N 2 adsorption isotherms were analyzed separately. The results showed that the generalized dimensions derived from CO 2 and the N 2 adsorption isotherms decrease as q increases, demonstrating a multifractal behavior followed by f(a) curves of all pores exhibiting a very strong asymmetry shape. Samples from the Middle Bakken demonstrated the smallest average H value and largest average a 10- -a 10+ for micropores while samples from the Upper Bakken depicted the highest average a 10- -a 10+ for the meso-macropores. This indicated that the Middle Bakken and the Upper Bakken have the largest micropore and meso-macropore heterogeneity, respectively. The impact of rock composition on pore structures showed that organic matter could increase the micropore connectivity and reduce micropore heterogeneity. Also, organic matter will reduce meso-macropore connectivity and increase meso-macropore heterogeneity. We were not able to establish a robust relationship between maturity and pore heterogeneity of the source rock samples from the Bakken. 2018 Journal Article http://hdl.handle.net/20.500.11937/66530 10.1016/j.fuel.2018.01.126 Elsevier Ltd fulltext |
| spellingShingle | Liu, K. Ostadhassan, M. Zou, Jie Gentzis, T. Rezaee, M. Reza Bubach, B. Carvajal-Ortiz, H. Multifractal analysis of gas adsorption isotherms for pore structure characterization of the Bakken Shale |
| title | Multifractal analysis of gas adsorption isotherms for pore structure characterization of the Bakken Shale |
| title_full | Multifractal analysis of gas adsorption isotherms for pore structure characterization of the Bakken Shale |
| title_fullStr | Multifractal analysis of gas adsorption isotherms for pore structure characterization of the Bakken Shale |
| title_full_unstemmed | Multifractal analysis of gas adsorption isotherms for pore structure characterization of the Bakken Shale |
| title_short | Multifractal analysis of gas adsorption isotherms for pore structure characterization of the Bakken Shale |
| title_sort | multifractal analysis of gas adsorption isotherms for pore structure characterization of the bakken shale |
| url | http://hdl.handle.net/20.500.11937/66530 |