Estimation of the differential stress from the stress rotation angle in low permeable rock
Abstract Rotations of the principal stress axes are observed as a result of fluid injection into reservoirs. We use a generic, fully coupled 3‐D thermo‐hydro‐mechanical model to investigate systematically the dependence of this stress rotation on different reservoir properties and injection scenario...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2017-07-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1002/2017GL073598 |
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| author | Moritz O. Ziegler Oliver Heidbach Arno Zang Patricia Martínez‐Garzón Marco Bohnhoff |
| author_facet | Moritz O. Ziegler Oliver Heidbach Arno Zang Patricia Martínez‐Garzón Marco Bohnhoff |
| author_sort | Moritz O. Ziegler |
| collection | DOAJ |
| description | Abstract Rotations of the principal stress axes are observed as a result of fluid injection into reservoirs. We use a generic, fully coupled 3‐D thermo‐hydro‐mechanical model to investigate systematically the dependence of this stress rotation on different reservoir properties and injection scenarios. We find that permeability, injection rate, and initial differential stress are the key factors, while other reservoir properties only play a negligible role. In particular, we find that thermal effects do not significantly contribute to stress rotations. For reservoir types with usual differential stress and reservoir treatment the occurrence of significant stress rotations is limited to reservoirs with a permeability of less than approximately 10−12 m2. Higher permeability effectively prevents stress rotations to occur. Thus, according to these general findings, the observed principal stress axes rotation can be used as a proxy of the initial differential stress provided that rock permeability and fluid injection rate are known a priori. |
| format | Article |
| id | doaj-art-d5758f5ce57946ba8acfe1cf87233260 |
| institution | DOAJ |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2017-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-d5758f5ce57946ba8acfe1cf872332602025-08-20T03:10:28ZengWileyGeophysical Research Letters0094-82761944-80072017-07-0144136761677010.1002/2017GL073598Estimation of the differential stress from the stress rotation angle in low permeable rockMoritz O. Ziegler0Oliver Heidbach1Arno Zang2Patricia Martínez‐Garzón3Marco Bohnhoff4Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences Potsdam GermanyHelmholtz Centre Potsdam GFZ German Research Centre for Geosciences Potsdam GermanyHelmholtz Centre Potsdam GFZ German Research Centre for Geosciences Potsdam GermanyHelmholtz Centre Potsdam GFZ German Research Centre for Geosciences Potsdam GermanyHelmholtz Centre Potsdam GFZ German Research Centre for Geosciences Potsdam GermanyAbstract Rotations of the principal stress axes are observed as a result of fluid injection into reservoirs. We use a generic, fully coupled 3‐D thermo‐hydro‐mechanical model to investigate systematically the dependence of this stress rotation on different reservoir properties and injection scenarios. We find that permeability, injection rate, and initial differential stress are the key factors, while other reservoir properties only play a negligible role. In particular, we find that thermal effects do not significantly contribute to stress rotations. For reservoir types with usual differential stress and reservoir treatment the occurrence of significant stress rotations is limited to reservoirs with a permeability of less than approximately 10−12 m2. Higher permeability effectively prevents stress rotations to occur. Thus, according to these general findings, the observed principal stress axes rotation can be used as a proxy of the initial differential stress provided that rock permeability and fluid injection rate are known a priori.https://doi.org/10.1002/2017GL073598stress tensor rotationfluid injectionthermo‐hydro‐mechanical modeling |
| spellingShingle | Moritz O. Ziegler Oliver Heidbach Arno Zang Patricia Martínez‐Garzón Marco Bohnhoff Estimation of the differential stress from the stress rotation angle in low permeable rock Geophysical Research Letters stress tensor rotation fluid injection thermo‐hydro‐mechanical modeling |
| title | Estimation of the differential stress from the stress rotation angle in low permeable rock |
| title_full | Estimation of the differential stress from the stress rotation angle in low permeable rock |
| title_fullStr | Estimation of the differential stress from the stress rotation angle in low permeable rock |
| title_full_unstemmed | Estimation of the differential stress from the stress rotation angle in low permeable rock |
| title_short | Estimation of the differential stress from the stress rotation angle in low permeable rock |
| title_sort | estimation of the differential stress from the stress rotation angle in low permeable rock |
| topic | stress tensor rotation fluid injection thermo‐hydro‐mechanical modeling |
| url | https://doi.org/10.1002/2017GL073598 |
| work_keys_str_mv | AT moritzoziegler estimationofthedifferentialstressfromthestressrotationangleinlowpermeablerock AT oliverheidbach estimationofthedifferentialstressfromthestressrotationangleinlowpermeablerock AT arnozang estimationofthedifferentialstressfromthestressrotationangleinlowpermeablerock AT patriciamartinezgarzon estimationofthedifferentialstressfromthestressrotationangleinlowpermeablerock AT marcobohnhoff estimationofthedifferentialstressfromthestressrotationangleinlowpermeablerock |