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Critically-stressed reservoir stimulation direction via stress preconditioning in horizontal EGS doublets
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  • Barnaby Fryer,
  • Xiaodong Ma,
  • Gunter Siddiqi,
  • Lyesse Laloui
Barnaby Fryer
Ecole Polytechnique Fédérale de Lausanne

Corresponding Author:barnaby.fryer@epfl.ch

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Xiaodong Ma
ETH Zürich
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Gunter Siddiqi
Swiss Federal Office of Energy
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Lyesse Laloui
Ecole Polytechnique Fédérale de Lausanne
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In this work, it is suggested numerically that it is possible to direct shear stimulation treatments in critically-stressed reservoirs. This would aid in the creation of Enhanced Geothermal Systems by promoting hydraulic connectivity in doublet-well systems. In this case, the stimulation treatment is directed using only the poroelastic stress changes associated with a previous stimulation treatment to precondition the stress field. This methodology is shown for reverse, strike-slip, and normal faulting stress regimes.