Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The Role of Temperature in Shear Instability and Bifurcation of Internally Pressurized Deep Boreholes
https://orcid.org/0000-0001-5091-0289
Abstract This paper investigates localized shear deformation around a borehole due to internal pressure in the well such as by fluid injection. Using an elasto-visco-plastic formulation combined with damage mechanics for the effect of shear cracking, we first benchmark the model against analytical solutions and then provide bifurcation criteria for the onset of localized cracking at different temperature conditions. We report that at increased temperatures of the rock formation, hot fluid injection promotes shear stimulation, while cold fluid suppresses it. This counter-intuitive result can offer new pathways of effective stimulation in high-temperature environments, like those encountered in enhanced geothermal systems.
The Role of Temperature in Shear Instability and Bifurcation of Internally Pressurized Deep Boreholes
https://orcid.org/0000-0001-5091-0289
Abstract This paper investigates localized shear deformation around a borehole due to internal pressure in the well such as by fluid injection. Using an elasto-visco-plastic formulation combined with damage mechanics for the effect of shear cracking, we first benchmark the model against analytical solutions and then provide bifurcation criteria for the onset of localized cracking at different temperature conditions. We report that at increased temperatures of the rock formation, hot fluid injection promotes shear stimulation, while cold fluid suppresses it. This counter-intuitive result can offer new pathways of effective stimulation in high-temperature environments, like those encountered in enhanced geothermal systems.
The Role of Temperature in Shear Instability and Bifurcation of Internally Pressurized Deep Boreholes
https://orcid.org/0000-0001-5091-0289
Abstract This paper investigates localized shear deformation around a borehole due to internal pressure in the well such as by fluid injection. Using an elasto-visco-plastic formulation combined with damage mechanics for the effect of shear cracking, we first benchmark the model against analytical solutions and then provide bifurcation criteria for the onset of localized cracking at different temperature conditions. We report that at increased temperatures of the rock formation, hot fluid injection promotes shear stimulation, while cold fluid suppresses it. This counter-intuitive result can offer new pathways of effective stimulation in high-temperature environments, like those encountered in enhanced geothermal systems.
The Role of Temperature in Shear Instability and Bifurcation of Internally Pressurized Deep Boreholes
Hu, Manman (Autor:in) / Veveakis, Manolis (Autor:in) / Poulet, Thomas (Autor:in) / Regenauer-Lieb, Klaus (Autor:in)
2017
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
BKL:
38.58
Geomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
38.58$jGeomechanik
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB41
Crack propagation from pressurized boreholes
| British Library Conference Proceedings | 1993
Stability and Bifurcation in Reinforced Boreholes
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Instability of Boreholes with Slurry
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Imperfection Sensitivity of Internally-Pressurized Torispherical Shells
| Online Contents | 1995