Articles | Volume 10, issue 6
Solid Earth, 10, 2115–2135, 2019
https://doi.org/10.5194/se-10-2115-2019
Solid Earth, 10, 2115–2135, 2019
https://doi.org/10.5194/se-10-2115-2019

Research article 18 Dec 2019

Research article | 18 Dec 2019

A numerical sensitivity study of how permeability, porosity, geological structure, and hydraulic gradient control the lifetime of a geothermal reservoir

Johanna F. Bauer et al.

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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Johanna Bauer on behalf of the Authors (07 Oct 2019)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (08 Oct 2019) by Federico Rossetti
RR by Anonymous Referee #4 (15 Oct 2019)
RR by Anonymous Referee #2 (28 Oct 2019)
ED: Publish as is (30 Oct 2019) by Federico Rossetti
ED: Publish as is (30 Oct 2019) by Federico Rossetti(Executive Editor)
AR by Johanna Bauer on behalf of the Authors (04 Nov 2019)  Author's response    Manuscript
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Short summary
We use a 4-D numerical sensitivity study to investigate which geological parameters exert a dominant control on the quality of a deep geothermal reservoir. We constrain how the variability of these parameters affects the economic potential of a reservoir. We show that the interplay of high permeability and hydraulic gradient is the dominant control on reservoir lifetime. Fracture anisotropy, typical for faults, leads to fluid channelling and thus restricts the exploitable volume significantly.