Measuring Elastic Properties to determine the influence of TOC on Synthetic Shale Samples
This paper describes the factors that control elastic properties of organic shale, which is crucial for exploration and successful gas production from unconventional reservoirs. Mechanical and dynamic elastic properties are main shale characteristics that are not yet well understood as there have be...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Published: |
CSIRO
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/31146 |
| _version_ | 1848753294298578944 |
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| author | Altowairqi, Y. Rezaee, R. Evans, Brian Urosevic, Milovan |
| author_facet | Altowairqi, Y. Rezaee, R. Evans, Brian Urosevic, Milovan |
| author_sort | Altowairqi, Y. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This paper describes the factors that control elastic properties of organic shale, which is crucial for exploration and successful gas production from unconventional reservoirs. Mechanical and dynamic elastic properties are main shale characteristics that are not yet well understood as there have been a limited number of investigations involving organic rich shale samples. Synthetic shale core samples whose clay mineralogy, non-clay mineral content and Total Organic Carbon (TOC) content are known can be used to study variations of elastic parameters in a controlled experimental environment including in-situ stress conditions. More than 20 synthetic shale samples were created for our investigations under reservoir stress conditions with different mineral composition and TOC percentage. Ultrasonic transducers were used to measure body wave velocities, which were then used to calculate the elastic properties of different shale samples. The results demonstrate that P- and S-wave velocities vary with changing TOC under isotropic stress conditions. It is shown that the velocities of P-and S-waves are inversely proportional to TOC content. In addition, the increase in the TOC produced a decrease in density from approximately 2.4 g/cc to 2.15 g/cc and increase in porosity from approximately 16% to 20%. |
| first_indexed | 2025-11-14T08:22:14Z |
| format | Journal Article |
| id | curtin-20.500.11937-31146 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:22:14Z |
| publishDate | 2015 |
| publisher | CSIRO |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-311462018-12-14T00:52:02Z Measuring Elastic Properties to determine the influence of TOC on Synthetic Shale Samples Altowairqi, Y. Rezaee, R. Evans, Brian Urosevic, Milovan This paper describes the factors that control elastic properties of organic shale, which is crucial for exploration and successful gas production from unconventional reservoirs. Mechanical and dynamic elastic properties are main shale characteristics that are not yet well understood as there have been a limited number of investigations involving organic rich shale samples. Synthetic shale core samples whose clay mineralogy, non-clay mineral content and Total Organic Carbon (TOC) content are known can be used to study variations of elastic parameters in a controlled experimental environment including in-situ stress conditions. More than 20 synthetic shale samples were created for our investigations under reservoir stress conditions with different mineral composition and TOC percentage. Ultrasonic transducers were used to measure body wave velocities, which were then used to calculate the elastic properties of different shale samples. The results demonstrate that P- and S-wave velocities vary with changing TOC under isotropic stress conditions. It is shown that the velocities of P-and S-waves are inversely proportional to TOC content. In addition, the increase in the TOC produced a decrease in density from approximately 2.4 g/cc to 2.15 g/cc and increase in porosity from approximately 16% to 20%. 2015 Journal Article http://hdl.handle.net/20.500.11937/31146 10.1071/ASEG2015ab228 CSIRO restricted |
| spellingShingle | Altowairqi, Y. Rezaee, R. Evans, Brian Urosevic, Milovan Measuring Elastic Properties to determine the influence of TOC on Synthetic Shale Samples |
| title | Measuring Elastic Properties to determine the influence of TOC on Synthetic Shale Samples |
| title_full | Measuring Elastic Properties to determine the influence of TOC on Synthetic Shale Samples |
| title_fullStr | Measuring Elastic Properties to determine the influence of TOC on Synthetic Shale Samples |
| title_full_unstemmed | Measuring Elastic Properties to determine the influence of TOC on Synthetic Shale Samples |
| title_short | Measuring Elastic Properties to determine the influence of TOC on Synthetic Shale Samples |
| title_sort | measuring elastic properties to determine the influence of toc on synthetic shale samples |
| url | http://hdl.handle.net/20.500.11937/31146 |