eprintid: 1849 rev_number: 10 eprint_status: archive userid: 6 dir: disk0/00/00/18/49 datestamp: 2017-03-02 11:13:44 lastmod: 2017-03-02 11:13:44 status_changed: 2017-03-02 11:13:44 type: article metadata_visibility: show creators_name: Portier, Sandrine creators_name: Vuataz, François D. corp_creators: Centre for Geothermal Research, CREGE, c/o CHYN, University of Neuchâtel, Switzerland corp_creators: Centre for Geothermal Research, CREGE, c/o CHYN, University of Neuchâtel, Switzerland title: Developing the ability to model acid-rock interactions and mineral dissolution during the RMA stimulation test performed at the Soultz-sous-Forêts EGS site, France subjects: O subjects: RF1 subjects: SG divisions: IP4 full_text_status: none abstract: The Soultz Enhanced Geothermal System (EGS) reservoir's response to chemical stimulation is assessed by numerical simulation of coupled thermo-hydraulic-chemical processes. To assess chemical interactions between host rocks and a mixture of HCl and HF as well as its potential effects on the Soultz EGS reservoir, new modelling efforts using the FRACHEM code have been initiated. This article presents the model calibration and results. Simulations consider realistic conditions with available data sets from the EGS system at Soultz. Results indicate that the predicted amount of fracture sealing minerals dissolved by injection of a mixture of acids Regular Mud Acid (RMA) was consistent with the estimated amount from the test performed on GPK4 well at Soultz EGS site. Consequently reservoir porosity and permeability can be enhanced especially near the injection well by acidizing treatment. date: 2010 date_type: published publication: Comptes Rendus Geoscience volume: 342 number: 7-8 publisher: Elsevier pagerange: 668-675 id_number: doi:10.1016/j.crte.2010.04.002 issn: 1631-0713 official_url: http://doi.org/10.1016/j.crte.2010.04.002 access_IS-EPOS: limited owner: Publisher citation: Portier, Sandrine and Vuataz, François D. (2010) Developing the ability to model acid-rock interactions and mineral dissolution during the RMA stimulation test performed at the Soultz-sous-Forêts EGS site, France. Comptes Rendus Geoscience, 342 (7-8). pp. 668-675. DOI: https://doi.org/10.1016/j.crte.2010.04.002