Enhanced Geothermal Systems Course

Mark McClure

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This course provides an overview of Enhanced Geothermal Systems (EGS). The concept of EGS is to use hydraulic stimulation to improve the flow rate that can be achieved from wells drilled in hot, low permeability formations. The technology has the potential to dramatically increase the amount of geothermal energy produced in North America and worldwide. In recent years, dramatic improvements have been achieved in both well performance and drilling, dramatically reducing cost per kW-hr of electricity from EGS, and leading to surge in interest.Read more...

This course covers: (a) introduction to geothermal energy, (b) calculating flow and power output, (c) mechanisms of stimulation, (d) stimulation design, (e) thermal performance over time, (f) the Utah FORGE project, (g) Project Red and Project Cape from Fervo Energy, (h) EGS design optimization, and (i) induced seismicity.

Upcoming course

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Course contents

    Chapter 1 - Introduction to Geothermal and EGS

    01-01 - Introduction and Overview

    01-02 - Types of Geothermal

    01-03 - Conventional and Next-Generation Approaches to Enhanced Geothermal Systems

    Chapter 2 - Calculating Flow and Power Output

    02-01 - Factors That Determine Flow Rate

    02-02 - Conversion to Electricity

    Chapter 3 - Mechanisms of Stimulation and Implications for Frac Design

    03-01 - Fracturing Modes

    03-02 - Faults, Fractures, and Joints

    03-03 - Conceptual Models for Stimulation

    03-04 - Fracture Morphology

    03-05 - Evidence Related to Stimulation Mechanism From FORGE

    03-06 - Evidence on Fracture Morphology From Shale

    Chapter 4 - EGS Stimulation Design

    04-01 - Challenges With Conventional Designs

    04-02 - Multistage Plug and Perf

    04-03 - Proppant Pack Conductivity

    04-04 - Fluid Recovery and Well Configuration

    04-05 - Proppant Transport

    Chapter 5 - Thermal Breakthrough

    05-01 - Context and Significance

    05-02 - Gringarten Solution

    05-03 - Economic Optimization

    05-04 - Fracture Morphology

    05-05 - Potential Role of Thermoelasticity

    05-06 - Flow Conformance

    05-07 - EGS with CO2

    Chapter 6 - Overview of the Utah FORGE Project

    06-01 - FORGE Background

    06-02 - Timeline and Key Events

    06-03 - Proppantless Stimulations 2022-2023

    06-04 - Propped stimulations 2024

    Chapter 7 - Progress from Fervo Energy

    07-01 - Company Overview

    07-02 - Project Red

    07-03 - Project Cape

    Chapter 8 - Example of an EGS Optimization

    08-01 - Simulation Setup and Background

    08-02 - Results of Sensitivity Analysis Simulations

    Chapter 9 - Induced Seismicity

    09-01 - Motivation and Historical Experience

    09-02 - Earthquake Physics

    09-03 - Induced Seismicity Hazard Analysis

    09-04 - Faults vs. Fractures

    09-05 - Traffic Light System