本書主要分析中國34個典型煤成大氣田的基本地質(zhì)概況、氣藏類型、天然氣成因類型和和氣源巖以及成藏過程，重點論述天然氣的地球化學特征，如組分、穩(wěn)定碳氫同位素、輕烴以及伴生凝析油的碳同位素、生物標志物等組成，判別天然氣成因，并結合氣田地質(zhì)條件分析氣源。
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Large Gas Fields and Their Significance in the Natural Gas Industry 1
CHAPTER OUTLINE 1
Large Gas Fields and Their Important Roles 1
1.1 Classification Criteria of Large Gas Fields 1
1.2 Large Gas Field-An Important Foundation for a Great Gas-Producing Country 2
1.2.1 Large Gas Fields Change China from a Poor Gas Producer to a Great Gas Producer3
1.2.2 Large Gas Fields Make Russia the “Saudi Arabia of Natural Gas” 6
2. Geological and Geochemical Characteristics of Large Gas Fields in China 10
2.1 Geochemical Characteristics 10
2.1.1 Natural Gas Components 10
2.1.2 Natural Gas Sources 11
2.2 Geological Characteristics 23
2.2.1 Reservoir 23
2.2.2 Gas Accumulation Stages 27
2.2.3 Gas Reservoir Types 29
References 31
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