Coupled Thermo-Hydro-Mechanical-Chemical Reservoir Modeling of the Milford Utah FORGE Site

Abstract

Reservoir models of EGS systems must, by necessity, incorporate detailed descriptions of fractures (or fracture systems) while still encompassing a large enough model domain to minimize potential boundary effects. Here we describe the reservoir modeling efforts for defining the reference discrete and continuum models of the Milford Utah FORGE site, and the interconnections between smaller timescale fracturing simulations with longer term operational and reservoir evolution simulations. The modeling efforts also include native state simulations for reservoir pressure, temperature, and stress, and evolve to include transient simulations of potential reservoir development and operational scenarios as well as reservoir optimization evaluation.