LLNL 5-2428: Fracture Permeability and Seismic Slip Behavior

Technical Report · Fri Aug 05 04:00:00 EDT 2022

DOI:https://doi.org/10.2172/1880956· OSTI ID:1880956

Kroll, Kayla A. ^[1]; Smith, M. M. ^[1]; Hao, Y. ^[1]; Davila, G. ^[1]; Fei, F. ^[1]; Frash, L. ^[2]; Burghardt, J. ^[3]; Marone, C. ^[4]; Richards-Dinger, K B ^[5]

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1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
3. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
4. Pennsylvania State Univ., University Park, PA (United States)
5. Consultant

Our goal is to develop, apply and validate a holistic thermal, hydrologic, mechanical, and chemical (THMC) workflow that also includes evaluation of induced seismic slip in EGS reservoirs. We will integrate experimental and modelling approaches to reduce parameteruncertainty and better predict and mitigate seismic hazard at Utah FORGE and future EGS sites.We propose a novel approach that incorporates 3D physics-based Earthquake simulations in THMC models, herein referred to as “THMC+E” models. This capability will enable improvedengineering decisions at Utah FORGE and move EGS operations toward repeatable, robust, economically viable, and socially accepted development. Utah FORGE management and future EGS operators may employ results of THMC+E models for decision making purposes throughout the lifetime of the field operation. For example, before production well installation, our THMC+E models will predict circulation scenarios and related seismic hazard for a suite ofpossible well locations and flow rates, thus enabling evaluation of optimal production well placement. Such efforts will be conducted throughout the lifetime of the project, whereby additional laboratory experiments will constrain key model parameters and machine learning (ML) will reduce the size of the parameter space and the associated uncertainty. THMC+E simulations will enable exploration various circumstances that may hinder EGS success and develop mitigation strategies.

• 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: 1880956
• Report Number(s): LLNL-TR-838525; 1059021
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
Geosciences