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On the Role of Thermal Stresses during Hydraulic Stimulation of Geothermal Reservoirs
Joint Authors
Jansen, Gunnar
Miller, Stephen A.
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-06-28
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
Massive quantities of fluid are injected into the subsurface during the creation of an engineered geothermal system (EGS) to induce shear fracture for enhanced reservoir permeability.
In this numerical thermoelasticity study, we analyze the effect of cold fluid injection on the reservoir and the resulting thermal stress change on potential shear failure in the reservoir.
We developed an efficient methodology for the coupled simulation of fluid flow, heat transport, and thermoelastic stress changes in a fractured reservoir.
We performed a series of numerical experiments to investigate the effects of fracture and matrix permeability and fracture orientation on thermal stress changes and failure potential.
Finally, we analyzed thermal stress propagation in a hypothetical reservoir for the spatial and temporal evolution of possible thermohydraulic induced shear failure.
We observe a strong influence of the hydraulic reservoir properties on thermal stress propagation.
Further, we find that thermal stress change can lead to induced shear failure on nonoptimally oriented fractures.
Our results suggest that thermal stress changes should be taken into account in all models for long-term fluid injections in fractured reservoirs.
American Psychological Association (APA)
Jansen, Gunnar& Miller, Stephen A.. 2017. On the Role of Thermal Stresses during Hydraulic Stimulation of Geothermal Reservoirs. Geofluids،Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1155592
Modern Language Association (MLA)
Jansen, Gunnar& Miller, Stephen A.. On the Role of Thermal Stresses during Hydraulic Stimulation of Geothermal Reservoirs. Geofluids No. 2017 (2017), pp.1-15.
https://search.emarefa.net/detail/BIM-1155592
American Medical Association (AMA)
Jansen, Gunnar& Miller, Stephen A.. On the Role of Thermal Stresses during Hydraulic Stimulation of Geothermal Reservoirs. Geofluids. 2017. Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1155592
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1155592