煤层气是我国资源潜力大、开发程度低的非常规天然气资源，也是我国目前最现实的接替能源。本书针对煤层气勘探开发的难点，围绕煤层气生成的动力学过程、煤层气储集机理及成藏响应、煤层气藏富集分布及主控因素、煤层气经济开采的基础理论"四个科学问题开展研究，主要内容包括3方面：煤层气勘探开发现状及研究基础；煤层气地质理论与评价预测技术；煤层气开采机理与技术。本书阐述了我国煤层气成因、赋存、成藏和渗透率变化等方面的规律和机制，形成了从煤层气可采资源预测、综合地质评价、地球物理探测、开采优化设计的技术系列并服务于煤层气开发实践，是一部理论与实践结合密切的煤层气领域专著。

Foreword 1
Foreword 2
Preface
Chapter 1 Status Quo and Research of CBM Exploration and Development
1.1 CBM Development Status Quo in Some Countries
1.1.1 CBM industry development in the United States
1.1.2 CBM industry development in other countries
1.2 CBM Industry Development Course in China--Theory and Technology Status
1.2.1 Development course
1.2.2 Progress in basic research
1.2.3 Status and progress of CBM exploration and development technology in China
1.3 Key Scientific and Technological Challenges in CBM Exploration and Development in China
References
Chapter 2 Genesis and Criteria of CBM
2.1 Geochemical Characteristics of CBM and Its Difference from Natural Gas
2.1.1 Sample testing method
2.1.2 Composition and basic characteristics
2.1.3 Composition and distribution of isotope
2.1.4 Difference and specificity of isotope composition
2.2 Control Factors on Carbon Isotope Indicator
2.2.1 Desorption and fractionation of methane carbon isotope
2.2.2 Impact of secondary biogenic gas on methane carbon isotope composition
2.2.3 Impact of microscopic composition of coal rock on methane carbon isotope composition
2.3 Genetic Classification and Geochemical Tracer System
2.3.1 Primary biogenic CBM
2.3.2 Thermally degraded CBM
2.3.3 Thermally cracked CBM
2.3.4 Secondary biogenic CBM
2.3.5 Mixed CBM
2.3.6 Tracer indicator system
2.4 Characteristics and Formation Mechanism of Secondary Biogenic CBM
2.4.1 Characteristics
2.4.2 Organic geochemistry and microbial degradation
References
Chapter 3 Characterization and Controlling Factors of CBM Reservoirs
3.1 CBM Reservoir Space
3.1.1 Pore system
3.1.2 Fracture system
3.2 Characterization and Mathematical Model of Favorable Coal Reservoirs
3.2.1 Pore system model
3.2.2 Heterogeneous models of CBM reservoir
3.3 Forming Mechanism and Controlling Factors of Favorable Coal Reservoirs
3.3.1 Coal diagenesis
3.3.2 Changes in porosity and permeability during coalification
3.3.3 Structural stress and strain response
3.3.4 Control of basin evolution on coal reservoir physical properties
References
Chapter 4 Coal Absorption Characteristics and Model under Reservoir Conditions
4.1 Experimental Study on Methane Absorption Characteristics under the Combined Influences of
Temperature and Pressure
4.1.1 Isothermal absorption experiment
4.1.2 Temperature-variable and pressure-variable absorption experiment
4.2 Absorption Characteristics of Coal under Formation Conditions
4.2.1 Effect of temperature on coal absorption capacity
4.2.2 Effects of temperature and pressure on coal absorption capacity
4.2.3 Change mechanism of adsorption capacity under reservoir conditions
4.3 Adsorption Model under Reservoir Conditions
4.3.1 Characteristic curve of methane adsorption
4.3.2 High-pressure isothermal adsorption curve and its correction to k value
4.3.3 Absorption model
4.4 Verification and Application of Models
4.4.1 Verified models by isothermal adsorption experiments
4.4.2 Temperature- and pressure-variable experiment results and models
4.4.3 Coal adsorption capacity in Qinshui Basin
4.4.4 Scientific and applied values
References
Chapter 5 Dynamic Conditions and Accumulation/Diffusion Mechanism of CBM
5.1 Structural Dynamics for CBM Accumulation
5.1.1 Structural evolution laid the foundation for CBM accumulation
5.1.2 Structural differentiation causes complicated dynamic conditions
5.1.3 Transformation from tectonic dynamics on coal seams controls permeable CBM zones
5.1.4 Combined structural dynamic conditions control the basic pattern of CBM accumulation and distribution
5.2 Thermal Dynamic Conditions and Accumulation/Diffusion History of CBM
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