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Title: Time-resolved model for geothermal engineering in high porosity Slochteren sandstone
Authors: Singh, A.
Fokker P.A.
Published in: International Journal for Numerical and Analytical Methods in Geomechanics
Abstract: This work is an extension of the time-resolved poro-elasto-plastic Mohr-Coulomb model by Fokker et al to include a more realistic constitutive model. Experiments on Slochteren sandstone revealed that the inelastic deformation contributes significantly in compressive deformation almost in all stages of loading and instigated the development of a Cam-Clay-like model to reproduce the Slochteren sandstone behavior. This model was adopted for the current extension. A typical behavior of this model is that the presence of a borehole causes both elastic and inelastic deformation everywhere in the reservoir, as opposed to the conventional philosophy with plastic and elastic zones. Our solution handles the spatial and temporal evolution of pressures, permeability, elastic and plastic properties under the assumption of symmetric loading. The applicability of the approach is demonstrated through a number of cases, like fluid injection, shut-in, production, stimulation, and an injection-production sequence. © 2021 The Authors. International Journal for Numerical and Analytical Methods in Geomechanics published by John Wiley & Sons Ltd.
Citation: International Journal for Numerical and Analytical Methods in Geomechanics, 45(7): 893-911
Issue Date: 2021
Publisher: John Wiley and Sons Ltd
Keywords: circular cavity
geothermal stimulation
poro-elasto-plastic model
Slochteren sandstone
ISSN: 3639061
Author Scopus IDs: 57193835378
Author Affiliations: Singh, A., HPT lab, Utrecht University, Utrecht, Netherlands
Fokker, P.A., HPT lab, Utrecht University, Utrecht, Netherlands, TNO Applied Geosciences, Utrecht, Netherlands
Funding Details: The project leading to the results in this article received funding from the European Union's Horizon 2020 research and innovation programmes under grant agreement number 691728 and under grant agreement number 727550. European Commission, EC; Horizon 2020: 691728, 727550
Corresponding Author: Fokker, P.A.; HPT lab, Netherlands; email: Fokker, P.A.; TNO Applied GeosciencesNetherlands; email:
Appears in Collections:Journal Publications [CE]

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