Advanced Reservoir and Production Engineering for Coal Bed Methane - 1st Edition - ISBN: 9780128030950, 9780128030967

Advanced Reservoir and Production Engineering for Coal Bed Methane

1st Edition

Authors: Pramod Thakur
eBook ISBN: 9780128030967
Paperback ISBN: 9780128030950
Imprint: Gulf Professional Publishing
Published Date: 7th October 2016
Page Count: 224
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Advanced Reservoir and Production Engineering for Coal Bed Methane presents the reader with design systems that will maximize production from worldwide coal bed methane reservoirs. Authored by an expert in the field with more than 40 years of’ experience, the author starts with much needed introductory basics on gas content and diffusion of gas in coal, crucial for anyone in the mining and natural gas industries.

Going a step further, chapters on hydrofracking, horizontal drilling technology, and production strategies address the challenges of dewatering, low production rates, and high development costs. This book systematically addresses all three zones of production levels, shallow coal, medium depth coal, and deep coal with coverage on gas extraction and production from a depth of 500 feet to upwards of 10,000 feet, strategies which cannot be found in any other reference book.

In addition, valuable content on deep coal seams with content on enhanced recovery, a discussion on CO2 flooding, infra-red heating and even in-situ combustion of degassed coal, giving engineers a greater understanding on how today’s shale activities can aid in enhancing production of coal bed for future natural gas production.

Key Features

  • Delivers how to recover and degas deeper coal seams while lowering development costs
  • Addresses both sorption process and irreducible fraction of gas in coal, with examples based on the author’s 40 plus years of direct experience
  • Explains how the same techniques used for production from deep shale activity can produce gas from deep coal seems with the help of enhanced recovery, leading to increased gas production


Primary Audience: Mining, Petroleum Engineers, Reservoir Engineers, Production Engineers, Unconventional Resource Managers, Reservoir Asset Managers, and Geologists. Secondary Audience: Postgraduate students in Mining and Petroleum and Natural Gas Engineering; Consultants in the area of gas production from Coal seams

Table of Contents

  • Dedication
  • Preface
  • Chapter 1. Global Reserves of Coal Bed Methane and Prominent Coal Basins
    • Abstract
    • 1.1 Introduction
    • 1.2 Coal and CBM Reserves
    • References
  • Chapter 2. Gas Content of Coal and Reserve Estimates
    • Abstract
    • 2.1 The Direct Method of Gas Content Measurement
    • 2.2 Gas Isotherms and Indirect Methods of Gas Content Determination
    • 2.3 Calculation of Gas Contained in the Pores of Coal
    • 2.4 Influence of Various Parameters on the Gas Contents of Coal
    • 2.5 Gas Reserve Estimation
    • 2.6 Properties of the CBM Produced
    • References
  • Chapter 3. Porosity and Permeability of Coal
    • Abstract
    • 3.1 Definition of Porosity
    • 3.2 Measurement of Porosity
    • 3.3 Definition of Permeability
    • 3.4 Measurement of Permeability
    • 3.5 Factors Influencing the Reservoir Permeability
    • References
  • Chapter 4. Diffusion of Gases From Coal
    • Abstract
    • 4.1 The Diffusion Process
    • 4.2 An Empirical Equation for Diffusion or Gas Desorption From Coal
    • 4.3 Another Empirical Relationship for τ, the Sorption Time
    • 4.4 Factors That Influence Diffusivity
    • References
  • Chapter 5. Pore Pressure and Stress Field in Coal Reservoirs
    • Abstract
    • 5.1 The Pore (Reservoir) Pressure
    • 5.2 The Vertical Pressure, σv
    • 5.3 Horizontal (Lateral) Stresses in Coal
    • 5.4 Impact of the Stress Field on Production Techniques
    • 5.5 Estimation of Moduli of Coal Seams from Geophysical Logs
    • References
  • Chapter 6. Fluid Flow in CBM Reservoirs
    • Abstract
    • 6.1 Unsteady State Flow
    • 6.2 Calculation of Effective Reservoir Permeability
    • 6.3 Steady-State Flow of Gas
    • 6.4 Production Decline
    • References
  • Chapter 7. Fluid Flow in Pipes and Boreholes
    • Abstract
    • 7.1 Derivation of the Basic Equation
    • 7.2 Flow of Water in Pipes
    • 7.3 Gas Flow in Horizontal Pipelines
    • 7.4 Hydraulic Transport of Solids in Water
    • 7.5 Flow of Gas in a Vertical Well
    • 7.6 Calculation of Horsepower for Gas Compression
    • 7.7 Effective Diameter of Noncircular Pipes
    • References
  • Chapter 8. Hydraulic Fracking of Coal
    • Abstract
    • 8.1 The Process of Hydrofracking
    • 8.2 Theoretical Estimation of Fracture Dimensions
    • 8.3 The Fracturing Procedure
    • 8.4 Foam Frac for Commercial Gas Production
    • 8.5 Slick Water Hydrofracking of Horizontal Wells in Deep Formation
    • 8.6 Fracture Pressure Analysis
    • 8.7 Analysis of Minifrac Data
    • 8.8 Mapping of Fractures in Coal Mines
    • References
  • Chapter 9. Horizontal Drilling in Coal Seams
    • Abstract
    • 9.1 In-mine Horizontal Drilling
    • 9.2 Horizontal Drilling From the Surface
    • References
  • Chapter 10. Coalbed Methane Production From Shallow Coal Reservoirs
    • Abstract
    • 10.1 Specific Gas Production for a Coal Seam
    • 10.2 Powder River Basin (Wyoming and Montana)
    • 10.3 The Cherokee Basin
    • 10.4 The Illinois Basin
    • 10.5 Northern Appalachian Basin
    • References
  • Chapter 11. Coalbed Methane Production From Medium-Depth Coal Reservoirs
    • Abstract
    • 11.1 The Central Appalachian Basin
    • 11.2 The Warrior Basin
    • 11.3 The Arkoma Basin (Kansas, Missouri, Arkansas, and Oklahoma)
    • 11.4 The Raton Basin (Colorado and New Mexico)
    • Reference
  • Chapter 12. Coalbed Methane Production From Deep Coal Reservoirs
    • Abstract
    • 12.1 The San Juan Basin (Colorado and New Mexico)
    • 12.2 The Piceance Basin
    • 12.3 The Greater Green River Basin
    • 12.4 The Uinta Basin
    • 12.5 Secondary Recovery by Carbon Dioxide Flooding
    • 12.6 Tertiary Recovery of Coalbed Methane/Underground Coal Gasification
    • References
  • Appendix 1. Evaluation of Error Function
  • Appendix 2. Solutions to Unsteady State Flow Equations Constant Production Rate Infinite Radial System
  • Glossary of Terms
    • Glossary of Terms Chapter 1
    • Glossary of Terms Chapter 2
    • Glossary of Terms Chapter 3
    • Glossary of Terms Chapter 4
    • Glossary of Terms Chapter 5
    • Glossary of Terms Chapter 6
    • Glossary of Terms Chapter 7
    • Glossary of Terms Chapter 8
    • Glossary of Terms Chapter 9
    • Glossary of Terms Chapter 10
    • Glossary of Terms Chapter 11
    • Glossary of Terms Chapter 12
  • Index


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About the Author

Pramod Thakur

Pramod Thakur, PhD is Manager of Coal Seam Degasification at CONSOL Energy in Morgantown, West Virginia.

The three editors of the publication are board members of the North American Coal Bed Methane Forum (NACBMF), and they represent industry, academia and government. Each has more than 25 years of experience in coal bed methane research, field work, and instruction. The NACBMF has organized conferences to advance mine safety and to increase production of coal bed methane as a worldwide energy resource. For 28 years the Forum has provided an opportunity for an exchange of information on coal bed methane research and technology between the public and private sectors. The NACBMF is governed by a Board of Directors and consists of representatives from the coal bed methane industry, coal and gas industries, gas marketing and service industries. The length and breadth of experience embodied in the NACBMF Board of Directors makes this group exceedingly qualified to produce this book.

Affiliations and Expertise

Coal Seam Degasification at CONSOL Energy in Morgantown, WV, USA

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