Utah FORGE: Optimization of a Plug-and-Perf Stimulation (Fervo Energy)

Information around the plug-and-perf treatment design at Utah FORGE by Fervo Energy.

Objective and Purpose:
- Develop a multistage hydraulic stimulation approach designed specifically to target the top three factors that control the technical and commercial viability of an EGS system:
i) Achieving sufficient injectivity to support high cross-well flow rates
ii) Distributing flow evenly across the wellbore and reservoir to maximize heat mining efficiency, ensure sustained heat transfer, and mitigate thermal breakthrough
iii) Overcoming the effects of stress heterogeneity, stress shadowing, and variations in natural fracture properties during the stimulation treatment, leading to a more predictable stimulated reservoir volume and offset well placement

- The following activities will be performed:
i) Design, plan, and execute a multistage plug-and-perf stimulation treatment at a Fervo site with data acquisition and well testing activities aimed at addressing key technical aspects of the issues above
ii) Perform data processing and interpretation of field results to translate the results form the Fervo site to a site-specific design at the Utah FORGE site
iii) Design, plan, and execute a multistage plug-and-perf stimulation treatment design at the Utah FORGE site

Methods and Approach:
- Design a detailed data acquisition plan to maximize learning around:
i) DFIT testing
ii) Petrophysical logging, image logging
iii) Permanent DAS/DTS fiber optic monitoring
iv) Deep borehole microseismic monitoring
v) Shallow borehole induced seismicity monitoring
vi) Injection/production testing (RTA analysis, tracer testing)
vii) Integrated numerical modeling and production forecasting