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Title: Cooling-induced reactivation of distant faults during long-term geothermal energy production in hot sedimentary aquifers

Journal Article · · Scientific Reports
ORCiD logo [1];  [1];  [2]; ORCiD logo [3]
  1. Spanish National Research Council (IDAEA-CSIC), Barcelona (Spain); Hydrogeology Group (UPC-CSIC), Barcelona (Spain)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Spanish National Research Council (IDAEA-CSIC), Barcelona (Spain); Hydrogeology Group (UPC-CSIC), Barcelona (Spain); Spanish National Research Council (IMEDEA-CSIS), Esporles (Spain)

Deep geothermal energy (DGE) represents an opportunity for a sustainable and carbon-free energy supply. One of the main concerns of DGE is induced seismicity that may produce damaging earthquakes, challenging its widespread exploitation. It is widely believed that the seismicity risk can be controlled by using doublet systems circulating water to minimize the injection-induced pressure changes. However, cold water reinjection may also give rise to thermal stresses within and beyond the cooled region, whose potential impacts on fault reactivation are less well understood. Here, we investigate by coupled thermo-hydro-mechanical modeling the processes that may lead to fault reactivation in a hot sedimentary aquifer (HSA) in which water is circulated through a doublet. We show that thermal stresses are transmitted much ahead of the cooled region and are likely to destabilize faults located far away from the doublet. Meanwhile, the fault permeability mainly controls the fault reactivation timing, which entails the importance of employing appropriate characterization methods. This investigation is crucial for understanding the mechanisms controlling induced seismicity associated with DGE in a HSA and allows the success of future DGE projects.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER). Climate and Environmental Sciences Division
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1891485
Journal Information:
Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 12; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

References (55)

Thermal drawdown and late-stage seismic-slip fault reactivation in enhanced geothermal reservoirs: Thermal front propagation and fault slip journal December 2014
Hydraulic fracture energy budget: Insights from the laboratory journal May 2015
Seismic and aseismic deformations and impact on reservoir permeability: The case of EGS stimulation at The Geysers, California, USA: EGS AT THE GEYSERS journal November 2015
Geomechanical simulation of the stress tensor rotation caused by injection of cold water in a deep geothermal reservoir journal December 2015
Poroelasticity book January 2016
Static and Dynamic Moduli of Malm Carbonate: A Poroelastic Correlation journal June 2016
Evaluating Micro-Seismic Events Triggered by Reservoir Operations at the Geothermal Site of Groß Schönebeck (Germany) journal May 2018
Review: Thermal water resources in carbonate rock aquifers journal June 2010
A Review of Some Rock Mechanics Issues in Geothermal Reservoir Development journal May 2012
The Northwest Geysers EGS Demonstration Project, California: Pre-stimulation Modeling and Interpretation of the Stimulation journal October 2013
Coupled hydraulic, thermal and mechanical considerations for the simulation of hot dry rock reservoirs journal June 1995
A note on induced stress changes in hydrocarbon and geothermal reservoirs journal April 1998
Analysis and modelling of longitudinal deformation profiles of tunnels excavated in strain-softening time-dependent rock masses journal September 2020
The 2012 Brawley swarm triggered by injection-induced aseismic slip journal July 2015
The 2016 Mw5.1 Fairview, Oklahoma earthquakes: Evidence for long-range poroelastic triggering at >40 km from fluid disposal wells journal August 2017
Characterisation of the Basel 1 enhanced geothermal system journal October 2008
Microseismicity observed at a non-pressure-stimulated geothermal power plant journal October 2014
Coupled continuum modeling of fracture reactivation and induced seismicity during enhanced geothermal operations journal October 2014
The influence of thermal-hydraulic-mechanical- and chemical effects on the evolution of permeability, seismicity and heat production in geothermal reservoirs journal January 2015
The Northwest Geysers EGS Demonstration Project, California – Part 2: Modeling and interpretation journal September 2016
Thermo-poroelastic effects on reservoir seismicity and permeability change journal September 2016
Thermal breakthrough calculations to optimize design of a multiple-stage Enhanced Geothermal System journal November 2016
Superposition approach to understand triggering mechanisms of post-injection induced seismicity journal November 2017
A three-dimensional coupled thermo-hydro-mechanical model for deformable fractured geothermal systems journal January 2018
Numerical simulation of reservoir stimulation with reference to the Newberry EGS journal January 2019
Probability of fault reactivation in the Bavarian Molasse Basin journal November 2019
Study on heat extraction performance of multiple-doublet system in Hot Sedimentary Aquifers: Case study from the Xianyang geothermal field, Northwest China journal July 2021
On the role of thermal stress and fluid pressure in triggering seismic and aseismic faulting at the Brawley Geothermal Field, California. journal December 2021
Seismic and aseismic motions generated by fluid injections journal March 2016
Long term impacts of cold CO2 injection on the caprock integrity journal May 2014
Field-scale fault reactivation experiments by fluid injection highlight aseismic leakage in caprock analogs: Implications for CO2 sequestration journal October 2021
The impact of injection on seismicity at The Geysers, California Geothermal Field journal December 2007
Thermal–hydrologic–mechanical–chemical processes in the evolution of engineered geothermal reservoirs journal July 2009
The impacts of mechanical stress transfers caused by hydromechanical and thermal processes on fault stability during hydraulic stimulation in a deep geothermal reservoir journal December 2014
Geomechanical analysis of the influence of CO 2 injection location on fault stability journal December 2016
Thermal coupling may control mechanical stability of geothermal reservoirs during cold water injection journal January 2013
Modeling of fault reactivation and induced seismicity during hydraulic fracturing of shale-gas reservoirs journal July 2013
Performance analysis of coaxial heat exchanger and heat-carrier fluid in medium-deep geothermal energy development journal May 2021
Reinjection in geothermal fields: A review of worldwide experience journal January 2011
Induced seismicity in geothermal reservoirs: A review of forecasting approaches journal December 2015
Geothermal energy in deep aquifers: A global assessment of the resource base for direct heat utilization journal February 2018
Intermittent and stochastic character of renewable energy sources: Consequences, cost of intermittence and benefit of forecasting journal May 2018
Combining geothermal energy capture with geologic carbon dioxide sequestration: GEOTHERMAL ENERGY WITH CO journal May 2011
Impact of CO 2 geological sequestration on the nucleation of earthquakes : CO journal September 2011
Sinking CO 2 in Supercritical Reservoirs journal November 2020
Validity of Cubic Law for fluid flow in a deformable rock fracture journal December 1980
The risks of long-term re-injection in supercritical geothermal systems journal September 2019
Ridgecrest aftershocks at Coso suppressed by thermal destressing journal June 2021
The Pawnee earthquake as a result of the interplay among injection, faults and foreshocks journal July 2017
Numerical formulation for a simulator (CODE_BRIGHT) for the coupled analysis of saline media journal November 1996
Thermal Expansion of Triaxially Stressed Mudstone at Elevated Temperatures up to 400°C journal August 2020
Porosity–permeability relationship derived from Upper Jurassic carbonate rock cores to assess the regional hydraulic matrix properties of the Malm reservoir in the South German Molasse Basin journal April 2020
Optimization of the utilization of deep borehole heat exchangers journal February 2020
Geomechanical Response of Fractured Reservoirs journal September 2018
The physics of fault friction: insights from experiments on simulated gouges at low shearing velocities journal November 2020