Impact of Composition on Pore Structure Properties in Shale: Implications for Micro-/Mesopore Volume and Surface Area Prediction
Pore structure properties such as pore volume, surface area, and pore size distribution (PSD) are the key petrophysical parameters in shales that control storage capacity, hydraulic conductivity, and the gas adsorption in potential. The nature of pore volume, surface area, and PSD are largely depend...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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AMER CHEMICAL SOC
2019
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/89579 |
| _version_ | 1848765250890891264 |
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| author | Yuan, Yujie Rezaee, Reza Al-khdheeawi, Emad Hu, S.Y. Verrall, M. Zou, Jie Liu, K. |
| author_facet | Yuan, Yujie Rezaee, Reza Al-khdheeawi, Emad Hu, S.Y. Verrall, M. Zou, Jie Liu, K. |
| author_sort | Yuan, Yujie |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Pore structure properties such as pore volume, surface area, and pore size distribution (PSD) are the key petrophysical parameters in shales that control storage capacity, hydraulic conductivity, and the gas adsorption in potential. The nature of pore volume, surface area, and PSD are largely dependent on shale composition, which is highly heterogeneous in different formations. However, the quantitative effects of the clay content and total organic carbon (TOC) content on micropore and mesopore structural properties have not been fully explored yet. Here, we quantified the impact of clay and TOC contents on micro-/mesopore volume, surface area, and PSD using three shale formations with large compositional variations. The results indicate that clay and TOC contents synchronically influence the shale micro-/mesopore structure properties, but they function in different pore size ranges. The micropores are predominantly contributed by organic matter pores. For the first time, we discover that the mesopores ranging between 2 and 17 nm are primarily controlled by clay mineral pores, and the pores larger than 17 nm contain both clay and organic matter pores. We further develop four new equations to predict micropore volume, mesopore volume, micropore surface area, and mesopore surface area as a function of clay and TOC contents on the basis of the data collected from the three different shale types. The statistical analysis shows that our developed correlations are capable of predicting the pore structure properties in our investigated formations with acceptable accuracy. The newly established equations provide insightful implications for the precise formation evaluation in downhole practices. |
| first_indexed | 2025-11-14T11:32:16Z |
| format | Journal Article |
| id | curtin-20.500.11937-89579 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:32:16Z |
| publishDate | 2019 |
| publisher | AMER CHEMICAL SOC |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-895792022-11-18T05:53:58Z Impact of Composition on Pore Structure Properties in Shale: Implications for Micro-/Mesopore Volume and Surface Area Prediction Yuan, Yujie Rezaee, Reza Al-khdheeawi, Emad Hu, S.Y. Verrall, M. Zou, Jie Liu, K. Science & Technology Technology Energy & Fuels Engineering, Chemical Engineering DENSITY-FUNCTIONAL THEORY CLAY BOUND WATER ORGANIC-MATTER SIZE DISTRIBUTION NITROGEN ADSORPTION METHANE ADSORPTION ALBANY SHALE GAS-STORAGE POROSITY MATURITY Pore structure properties such as pore volume, surface area, and pore size distribution (PSD) are the key petrophysical parameters in shales that control storage capacity, hydraulic conductivity, and the gas adsorption in potential. The nature of pore volume, surface area, and PSD are largely dependent on shale composition, which is highly heterogeneous in different formations. However, the quantitative effects of the clay content and total organic carbon (TOC) content on micropore and mesopore structural properties have not been fully explored yet. Here, we quantified the impact of clay and TOC contents on micro-/mesopore volume, surface area, and PSD using three shale formations with large compositional variations. The results indicate that clay and TOC contents synchronically influence the shale micro-/mesopore structure properties, but they function in different pore size ranges. The micropores are predominantly contributed by organic matter pores. For the first time, we discover that the mesopores ranging between 2 and 17 nm are primarily controlled by clay mineral pores, and the pores larger than 17 nm contain both clay and organic matter pores. We further develop four new equations to predict micropore volume, mesopore volume, micropore surface area, and mesopore surface area as a function of clay and TOC contents on the basis of the data collected from the three different shale types. The statistical analysis shows that our developed correlations are capable of predicting the pore structure properties in our investigated formations with acceptable accuracy. The newly established equations provide insightful implications for the precise formation evaluation in downhole practices. 2019 Journal Article http://hdl.handle.net/20.500.11937/89579 10.1021/acs.energyfuels.9b02232 English AMER CHEMICAL SOC restricted |
| spellingShingle | Science & Technology Technology Energy & Fuels Engineering, Chemical Engineering DENSITY-FUNCTIONAL THEORY CLAY BOUND WATER ORGANIC-MATTER SIZE DISTRIBUTION NITROGEN ADSORPTION METHANE ADSORPTION ALBANY SHALE GAS-STORAGE POROSITY MATURITY Yuan, Yujie Rezaee, Reza Al-khdheeawi, Emad Hu, S.Y. Verrall, M. Zou, Jie Liu, K. Impact of Composition on Pore Structure Properties in Shale: Implications for Micro-/Mesopore Volume and Surface Area Prediction |
| title | Impact of Composition on Pore Structure Properties in Shale: Implications for Micro-/Mesopore Volume and Surface Area Prediction |
| title_full | Impact of Composition on Pore Structure Properties in Shale: Implications for Micro-/Mesopore Volume and Surface Area Prediction |
| title_fullStr | Impact of Composition on Pore Structure Properties in Shale: Implications for Micro-/Mesopore Volume and Surface Area Prediction |
| title_full_unstemmed | Impact of Composition on Pore Structure Properties in Shale: Implications for Micro-/Mesopore Volume and Surface Area Prediction |
| title_short | Impact of Composition on Pore Structure Properties in Shale: Implications for Micro-/Mesopore Volume and Surface Area Prediction |
| title_sort | impact of composition on pore structure properties in shale: implications for micro-/mesopore volume and surface area prediction |
| topic | Science & Technology Technology Energy & Fuels Engineering, Chemical Engineering DENSITY-FUNCTIONAL THEORY CLAY BOUND WATER ORGANIC-MATTER SIZE DISTRIBUTION NITROGEN ADSORPTION METHANE ADSORPTION ALBANY SHALE GAS-STORAGE POROSITY MATURITY |
| url | http://hdl.handle.net/20.500.11937/89579 |