Geothermal Reservoir Engineering

Geothermal Reservoir Engineering

2nd Edition - February 22, 2011

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  • Authors: Malcolm Grant, Paul Bixley
  • Paperback ISBN: 9780128103753
  • eBook ISBN: 9780123838810

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As nations alike struggle to diversify and secure their power portfolios, geothermal energy, the essentially limitless heat emanating from the earth itself, is being harnessed at an unprecedented rate.  For the last 25 years, engineers around the world tasked with taming this raw power have used Geothermal Reservoir Engineering as both a training manual and a professional reference.  This long-awaited second edition of Geothermal Reservoir Engineering is a practical guide to the issues and tasks geothermal engineers encounter in the course of their daily jobs. The book focuses particularly on the evaluation of potential sites and provides detailed guidance on the field management of the power plants built on them.  With over 100 pages of new material informed by the breakthroughs of the last 25 years, Geothermal Reservoir Engineering remains the only training tool and professional reference dedicated to advising both new and experienced geothermal reservoir engineers.

Key Features

  • The only resource available to help geothermal professionals make smart choices in field site selection and reservoir management
  •  Practical focus eschews theory and basics- getting right to the heart of the important issues encountered in the field
  • Updates include coverage of advances in EGS (enhanced geothermal systems), well stimulation, well modeling, extensive field histories and preparing data for reservoir simulation
  • Case studies provide cautionary tales and best practices that can only be imparted by a seasoned expert


Geothermal reservoir engineers; geothermal professionals (engineers, scientists, managers). Petroleum engineering and ground water professionals interested in geothermal energy, earth scientists, geoscientists

Table of Contents

  • Foreword

    Preface to the Second Edition


    Chapter 1. Geothermal Reservoirs

    1.1 Introduction

    1.2 The Development of Geothermal Reservoir Engineering

    1.3 Definitions

    1.4 Organization of this Book

    1.5 References and Units

    Chapter 2. Concepts of Geothermal Systems

    2.1 Introduction

    2.2 Conductive Systems

    2.3 Convective Systems: Liquid Dominated

    2.4 Convective Systems: Vapor Dominated

    2.5 Concepts of Changes Under Exploitation

    2.6 Conclusions

    Chapter 3. Simple Quantitative Models

    3.1 Introduction

    3.2 Simplifications and Concepts of Storage

    3.3 Pressure Transient Models

    3.4 Simple Lumped-Parameter Models

    3.5 Steam Reservoir with Immobile Water

    3.6 Reserves

    3.7 Fractured Media

    3.8 Chemical Flow Models

    3.9 Applicability of the Models

    Chapter 4. Interpretation of Downhole Measurements

    4.1 Introduction

    4.2 Objectives of the Well Testing Program

    4.3 Well Models

    4.4 Some Basic Well Profiles

    4.5 Gas Pressure at Wellhead

    4.6 Unusual or Misleading Well Profiles

    Chapter 5. Downhole Measurement

    5.1 Instruments

    5.2 Geothermal Well Design

    5.3 Temperature-Pressure Instruments

    5.4 Downhole Flow Measurements

    5.5 Sources of Error in Downhole Measurements

    5.6 Designing a Downhole Measurement Program

    5.7 Spinner Measurements

    Chapter 6. Measurements During Drilling

    6.1 General

    6.2 Pressure

    6.3 Significance of Drilling Losses

    6.4 Temperature

    6.5 Stage Testing

    6.6 The Drilling of RK22

    Chapter 7. Well Completion and Heating

    7.1 Introduction

    7.2 Quantifying Reservoir Parameters

    7.3 Wellbore Heat Transfer

    7.4 Heating

    7.5 Injection Performance

    7.6 Vapor-Dominated Systems

    Chapter 8. Production Testing

    8.1 Introduction

    8.2 Starting discharge

    8.3 Production Testing Methods

    8.4 Single-Phase Fluid

    8.5 Two-Phase Flow Measurement Methods

    8.6 Cycling Wells

    8.7 Accuracy of Flow Measurements

    8.8 Calculating Well Performance

    8.9 Interpretation of Output Data

    Chapter 9. Case Study: A History of Well BR2, Ohaaki

    9.1 Introduction

    9.2 The Drilling and Testing Period: May–August 1966

    9.3 The Discharge Period: 1966–1971

    9.4 Shutdown and Pressure Recovery: 1971–1988

    9.5 Production: 1988–1997

    9.6 Conclusions

    Chapter 10. Conceptual Modeling and Simple Inferences

    10.1 Introduction

    10.2 Mapping the Reservoir

    10.3 Temperature Profiles

    10.4 Pressure

    10.5 Exploited Fields

    10.6 Summary

    Chapter 11. Simulation

    11.1 Introduction

    11.2 Input Data

    11.3 Conceptual Model

    11.4 Natural State

    11.5 Well Specification

    11.6 History Matching

    11.7 Dual Porosity

    11.8 Validation of the Simulation Process

    11.9 Ngatamariki

    Chapter 12. Field Examples

    12.1 Introduction

    12.2 Wairakei

    12.3 The Geysers

    12.4 Svartsengi

    12.5 Balcova-Narlidere

    12.6 Palinpinon

    12.7 Awibengkok (Salak)

    12.8 Patuha and Other Hybrid Fields

    12.9 Mak-Ban

    Chapter 13. Field Management

    13.1 Introduction

    13.2 Decline and Lumped Parameter Models

    13.3 Deviations from Trend

    13.4 Tracer Testing

    13.5 Incorporation in Simulation

    13.6 Surface Effects

    13.7 Subsidence

    13.8 Injection Management

    Chapter 14. Well Stimulation and Engineered Geothermal Systems

    14.1 Introduction: Fracturing Rock

    14.2 Thermal Stimulation

    14.3 Acid Stimulation

    14.4 Stimulating Existing Reservoirs: Deep Sedimentary Aquifers

    14.5 EGS: Creating a Reservoir

    Appendix 1. Pressure Transient Analysis

    A1.1 Introduction

    A1.2 Basic Solution

    A1.3 Wellbore Storage and Skin

    A1.4 Injection

    A1.5 Two-Phase Flow

    A1.6 Pseudopressure

    A1.7 Variable Flow Rate

    A1.8 Fractured Media

    A1.9 Wellbore Thermal and Flow Effects

    A1.10 Barometric, Tidal, and Other Effects

    A1.11 Temperature Transients

    A1.12 Conversion of Groundwater Units

    Appendix 2. Gas Correction for Flow Measurements

    A2.1 Effect of Noncondensable Gas

    A2.2 Gas Correction for the Separator Method

    A2.3 Gas Correction for the Lip Pressure Method

    Appendix 3. Equations of Motion and State

    A3.1 Introduction

    A3.2 Conservation Equations

    A3.3. Darcy’s Law

    A3.4 Constitutive Relations

    A3.5 Boiling-Point for Depth Model

    Appendix 4. Geothermal Fields

    List of Symbols





Product details

  • No. of pages: 378
  • Language: English
  • Copyright: © Academic Press 2011
  • Published: February 22, 2011
  • Imprint: Academic Press
  • Paperback ISBN: 9780128103753
  • eBook ISBN: 9780123838810

About the Authors

Malcolm Grant

Dr. Grant holds a doctoral degree in applied mathematics from MIT, has participated in various research and management projects, and has worked as a private consultant since 1994. He has been involved in assessment and development of 76 geothermal fields in 14 countries. Dr. Grant is among the most prestigious scientists in the field of geothermal reservoir engineering and has published many papers in that field in leading journals such as Geothermics.

Affiliations and Expertise

MAGAK, Auckland, New Zealand

Paul Bixley

Qualifications BSc(hons) Victoria University of Wellington , Geothermal reservoir engineer with more than 40 year’s experience in exploration, development and production operations in high temperature liquid dominated geothermal resources. Currently employed as Technical Advisor with Contact Energy geothermal operations based at Wairakei. Specialist skills in well testing and field performance monitoring and data interpretation. Although based in New Zealand, he has spent several years providing onsite advice for geothermal projects in Asia, Pacific rim and Africa. Qualifications BSc(hons) Victoria University of Wellington

Affiliations and Expertise

Technical Advisor, Contact Energy Ltd., geothermal operations, Wairakei, Wellington, New Zealand

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