@article{FarkasHofmannZimmermannetal.2021,
  author    = {Farkas, M{\´a}rton P{\´a}l and Hofmann, Hannes and Zimmermann, G{\"u}nter and Zang, Arno and Bethmann, Falko and Meier, Peter and Cottrell, Mark and Josephson, Neal},
  title     = {Hydromechanical analysis of the second hydraulic stimulation in well PX-1 at the Pohang fractured geothermal reservoir, South Korea},
  series = {Geothermics : an international journal of geothermal research and its applications},
  volume    = {89},
  journal   = {Geothermics : an international journal of geothermal research and its applications},
  publisher = {Elsevier},
  address   = {Amsterdam [u.a.]},
  issn      = {0375-6505},
  doi       = {10.1016/j.geothermics.2020.101990},
  pages     = {13},
  year      = {2021},
  abstract  = {In this study, we investigate numerically the hydro-mechanical behavior of fractured crystalline rock due to one of the five hydraulic stimulations at the Pohang Enhanced Geothermal site in South Korea. We use the commercial code FracMan (Golder Associates) that enables studying hydro-mechanical coupled processes in fractured media in three dimensions combining the finite element method with a discrete fracture network. The software is used to simulate fluid pressure perturbation at fractures during hydraulic stimulation. Our numerical simulation shows that pressure history matching can be obtained by partitioning the treatment into separate phases. This results in adjusted stress-aperture relationships. The evolution of aperture adjustment implies that the stimulation mechanism could be a combination of hydraulic fracturing and shearing. The simulated extent of the 0.01 MPa overpressure contour at the end of the treatment equals to similar to 180 m around the injection point.},
  language  = {en}
}