FORGE STRESS annual report

Technical Report · Wed Aug 07 04:00:00 EDT 2024

DOI:https://doi.org/10.2172/2427466· OSTI ID:2427466

Cusini, Matteo ^[1]; Bunger, Andrew ^[2]

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1. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
2. Univ. of Pittsburgh, PA (United States)

The project's goal is to combine high-fidelity numerical models and true-triaxial block fracturing tests at high temperatures to understand the relationship between in situ stress, thermal effects, wellbore orientations and hydraulic fracture patterns. The numerical models are calibrated against field data, such as well pressures and microseismic data, and employed to estimate the in situ stress at the FORGE site. Laboratory experiments investigate the complex physics driving hydraulic fracture nucleation in EGS, enhancing understanding of the role of parameters like temperature, well orientation, and stress. Additionally, they are employed to validate some of the numerical tools used in the project. The project will have a significant impact by: (1) improving the characterization of the in-situ stress field at FORGE; (2) demonstrating the use of high-fidelity modeling tools for EGS; (3) providing a unique set of high-temperature hydraulic fracturing results to identify key components for in-situ stress estimation, validate current theories, and propose new ones; (4) offering a validated set of numerical tools within an open-source simulation framework, GEOS, that will be available to any future user.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC52-07NA27344
• OSTI ID: 2427466
• Report Number(s): LLNL--TR-868008; 1103886
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY