目录 第1章 引言 1 1.1 页岩气国内外研究现状 4 1.1.1 页岩气国外研究现状 5 1.1.2 页岩气国内研究现状 14 1.2 岩相古地理学研究现状 26 1.2.1 国外岩相古地理学的发展历史 26 1.2.2 国内岩相古地理学的研究现状 31 1.2.3 岩相古地地理学在页岩气工业中的应用现状 34 1.3 本章小结 39 第2章 页岩气富集影响因素分析 41 2.1 页岩气的定义 41 2.2 页岩气地质特征 42 2.3 页岩气富集影响因素 43 2.3.1 有机碳含量 44 2.3.2 有机质类型及成熟度 45 2.3.3 含气页岩厚度 47 2.3.4 矿物组分 47 2.3.5 储层特征 48 2.3.6 埋深和地层压力 49 2.3.7 保存条件 49 2.3.8 影响因素综合分析 50 2.4 本章小结 52 第3章 页岩气地质调查 53 3.1 页岩气地质调查工作的任务 53 3.2 页岩气地质调查工作的方法 54 3.2.1 沉积盆地与页岩气 55 3.2.2 沉积相(环境)与页岩气 58 3.2.3 岩相古地理与页岩气 63 3.2.4 具体的方法步骤 66 3.3 本章小结 69 第4章 实例——以川南及邻区志留系龙马溪组为例 70 4.1 区域地质概况 70 4.1.1 研究区位置 70 4.1.2 区域地质背景 71 4.1.3 地层划分对比 73 4.1.4 研究区下志留统龙马溪组地质背景 76 4.1.5 研究思路及技术方法 79 4.2 沉积特征及岩相古地理 81 4.2.1 岩石学特征 81 4.2.2 沉积相类型及沉积特征 84 4.2.3 沉积相对比 93 4.2.4 龙马溪组下段岩相古地理 97 4.2.5 本节小结 98 4.3 有机地球化学特征 99 4.3.1 有机质类型 99 4.3.2 黑色岩系的有机质丰度 104 4.3.3 黑色岩系的有机质成熟度 104 4.3.4 有机质最高热解峰温异常探讨 114 4.3.5 本节小结 114 4.4 岩石矿物组分特征及其对页岩气的影响 115 4.4.1 矿物组分类型及特征 115 4.4.2 矿物岩石类型划分 117 4.4.3 脆性矿物的分布特征 118 4.4.4 黏土矿物特征 120 4.4.5 矿物组分对页岩气的影响 123 4.4.6 本节小结 145 4.5 储集空间及物性特征 146 4.5.1 储层物性特征 146 4.5.2 储集空间类型 147 4.5.3 储集空间发育特征影响因素分析 154 4.5.4 本节小结 156 4.6 成岩作用研究 157 4.6.1 成岩作用类型及成岩矿物 157 4.6.2 成岩序列 162 4.6.3 成岩作用对页岩气的影响 167 4.6.4 本节小结 169 4.7 沉积相对页岩气的影响 170 4.7.1 岩相与页岩气地质条件的关系 171 4.7.2 沉积环境与页岩气地质条件的关系 175 4.7.3 沉积相对页岩气有利区的划分 179 4.7.4 本节小结 180 4.8 页岩气选区评价 180 4.8.1 页岩气选区评价指标 181 4.8.2 川南及邻区志留系龙马溪组黑色岩系页岩气选区评价 184 4.8.3 本节小结 190 4.9 本章小结 191 结论 192 参考文献 195 Contents Chapter 1：Introduction 1 1.1 Research status of shale gas at home and abroad 4 1.1.1 Research status of shale gas abroad 5 1.1.2 Domestic research status of shale gas 14 1.2 Research status of lithofaciespaleogeography 26 1.2.1 History of lithofaciespaleogeography abroad 26 1.2.2 Domestic research status of lithofaciespaleogeography 31 1.2.3 Application status of the lithofaciespaleogeography in shale gas industry 34 1.3 Summary of this chapter 39 Chapter 2: Analysis of influencing factors of shale gas enrichment 41 2.1 Definition of shale gas 41 2.2 Geological characteristics of shale gas 42 2.3 Influencing factors of shale gas enrichment 43 2.3.1 Organic carbon content 44 2.3.2 Type and maturity of the organic matter 45 2.3.3 Thickness of the gasbearing shale 47 2.3.4 Mineral composition 47 2.3.5 Reservoir property 48 2.3.6 Burial depth and formation pressure 49 2.3.7 Preservation conditions 49 2.3.8 Comprehensive analysis of influencing factors 50 2.4 Summary of this chapter 52 Chapter 3: Geological survey for shale gas 53 3.1 Tasks of the geological survey for shale gas 53 3.2 Methods of the geological survey for shale gas 54 3.2.1 Sedimentary basin and shale gas 55 3.2.2 Sedimentary facies ( environment ) and shale gas 58 3.2.3 Lithofaciespaleogeography and shale gas 63 3.2.4 Method and procedure of the geological survey for shale gas 66 3.3 Summary of this chapter 69 Chapter 4: Example —— taking Longmaxi Formation from southern Sichuan Basin and its adjacent area for example 70 4.1 Regional geological setting 70 4.1.1 Location 70 4.1.2 Tectonics setting 71 4.1.3 Classification and correlation of stratigraphy 73 4.1.4 Geological background of the lower Silurian Longmaxi Formationin 76 4.1.5 Research ideas and methods 79 4.2 Sedimentary characteristics and lithofaciespaleogeography 81 4.2.1 Petrologic feature 81 4.2.2 Sedimentary facies and sedimentary characteristics 84 4.2.3 Contradistinction of sedimentay facies 93 4.2.4 Lithofaciespaleogeography of the lower Longmaxi Formation 97 4.2.5 Summary of this section 98 4.3 Organic geochemical characteristics 99 4.3.1 Organic matter type 99 4.3.2 TOC of the black rock series 104 4.3.3 Maturity of the black rock series 104 4.3.4 Discussion of the abnormal Tmax of organic matter 114 4.3.5 Summary of this section 114 4.4 Mineral composition and the effect on shale gas 115 4.4.1 Type and characteristics of minerals 115 4.4.2 Division of rock types by minerals 117 4.4.3 Distribution characteristics of the brittle mineral 118 4.4.4 Clay minerals characteristics 120 4.4.5 Influence of mineral composition on shale gas 123 4.4.6 Summary of this section 145 4.5 Reservoir space and physical properties 146 4.5.1 Physical properties of reservoir 146 4.5.2 Types of reservoir space 147 4.5.3 Influence factors for reservoir space 154 4.5.4 Summary of this section 156 4.6 Diagenesis 157 4.6.1 Diagenesis and diagenetic minerals 157 4.6.2 Diagenetic sequence 162 4.6.3 Influence of diagenesis on shale gas 167 4.6.4 Summary of this section 169 4.7 Influence of sedimentary facies on shale gas 170 4.7.1 Relationship between facies and geological condition of shale gas 171 4.7.2 Relationship between sedimentary environment and geological condition of shale gas 175 4.7.3 Evaluation of shale gas by sedimentary facies 179 4.7.4 Summary of this section 180 4.8 Evaluation of target selection for shale gas 180 4.8.1 Evaluation index of shale gas 181 4.8.2 Shale gas evaluation of Silurian Longmaxi Formation in Sichuan Basin and its adjacent area 184 4.8.3 Summary of this section 190 4.9 Summary of this chapter 191 Conclusion 192 References 195
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