Fracture Mechanisms in Organic-Rich Shales: Role of Kerogen
In this work we study role of kerogen in the fracture properties of organic-rich shales and, in particular, in the ductility of shales. The presence of kerogen and clays in shale is known to increase the ductility. We propose here a multiscale approach to develop a fine understanding of shale ductil...
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American Society of Civil Engineers (ASCE)
2018
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| Online Access: | http://hdl.handle.net/1721.1/117479 https://orcid.org/0000-0002-7089-8069 https://orcid.org/0000-0001-5559-4190 |
| _version_ | 1826190257513562112 |
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| author | Brochard, Laurent Hantal, Gyorgy Miklos Laubie, Hadrien H Ulm, Franz-Josef Pellenq, Roland Jm |
| author2 | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Brochard, Laurent Hantal, Gyorgy Miklos Laubie, Hadrien H Ulm, Franz-Josef Pellenq, Roland Jm |
| author_sort | Brochard, Laurent |
| collection | MIT |
| description | In this work we study role of kerogen in the fracture properties of organic-rich shales and, in particular, in the ductility of shales. The presence of kerogen and clays in shale is known to increase the ductility. We propose here a multiscale approach to develop a fine understanding of shale ductility from the molecular scale. We develop and validate a methodology at the molecular scale that can capture the toughness and ductility of a material. We apply this methodology successfully to a silica polymorph and to a kerogen analog, and we confirm the significant ductility of kerogen. Interestingly the silica-kerogen interface exhibits a similar ductility, which is central for the properties of the heterogeneous shale. Finally, we consider a tentative upscaling considering the pull out phenomenon as a likely mechanism of fracture of the shale. |
| first_indexed | 2024-09-23T08:37:29Z |
| format | Article |
| id | mit-1721.1/117479 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T08:37:29Z |
| publishDate | 2018 |
| publisher | American Society of Civil Engineers (ASCE) |
| record_format | dspace |
| spelling | mit-1721.1/1174792022-09-23T13:23:52Z Fracture Mechanisms in Organic-Rich Shales: Role of Kerogen Brochard, Laurent Hantal, Gyorgy Miklos Laubie, Hadrien H Ulm, Franz-Josef Pellenq, Roland Jm Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Hantal, Gyorgy Miklos Laubie, Hadrien H Ulm, Franz-Josef Pellenq, Roland Jm In this work we study role of kerogen in the fracture properties of organic-rich shales and, in particular, in the ductility of shales. The presence of kerogen and clays in shale is known to increase the ductility. We propose here a multiscale approach to develop a fine understanding of shale ductility from the molecular scale. We develop and validate a methodology at the molecular scale that can capture the toughness and ductility of a material. We apply this methodology successfully to a silica polymorph and to a kerogen analog, and we confirm the significant ductility of kerogen. Interestingly the silica-kerogen interface exhibits a similar ductility, which is central for the properties of the heterogeneous shale. Finally, we consider a tentative upscaling considering the pull out phenomenon as a likely mechanism of fracture of the shale. 2018-08-22T18:07:50Z 2018-08-22T18:07:50Z 2013-06 2018-08-21T18:17:15Z Article http://purl.org/eprint/type/ConferencePaper 9780784412992 http://hdl.handle.net/1721.1/117479 Brochard, Laurent et al. “Fracture Mechanisms in Organic-Rich Shales: Role of Kerogen.” Poromechanics V (June 2013): 2471-2480 © 2013 American Society of Civil Engineers. https://orcid.org/0000-0002-7089-8069 https://orcid.org/0000-0001-5559-4190 http://dx.doi.org/10.1061/9780784412992.288 Poromechanics V Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf American Society of Civil Engineers (ASCE) Other repository |
| spellingShingle | Brochard, Laurent Hantal, Gyorgy Miklos Laubie, Hadrien H Ulm, Franz-Josef Pellenq, Roland Jm Fracture Mechanisms in Organic-Rich Shales: Role of Kerogen |
| title | Fracture Mechanisms in Organic-Rich Shales: Role of Kerogen |
| title_full | Fracture Mechanisms in Organic-Rich Shales: Role of Kerogen |
| title_fullStr | Fracture Mechanisms in Organic-Rich Shales: Role of Kerogen |
| title_full_unstemmed | Fracture Mechanisms in Organic-Rich Shales: Role of Kerogen |
| title_short | Fracture Mechanisms in Organic-Rich Shales: Role of Kerogen |
| title_sort | fracture mechanisms in organic rich shales role of kerogen |
| url | http://hdl.handle.net/1721.1/117479 https://orcid.org/0000-0002-7089-8069 https://orcid.org/0000-0001-5559-4190 |
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