中文摘要：

21世纪初的十年间，天然气地球化学理论、技术、方法取得了长足进展。其中基础理论方面在天然气氢同位素组成影响因素及其示踪、稀有气体38Ar的形成条件及指示意义、天然气藏4He累积模式及定年、轻烃化合物母质示踪与运移分馏作用、以及成烃成藏过程的地球化学示踪体系的建立等方面进展显著；技术方法方面在生烃模拟实验、氢同位素在线分析、微量气体同位素分析、硫化氢硫同位素的GC—IRMS直接测定方法、稀有气体分析新方法、烃源岩真空解析气分析新方法等方面取得可喜成果。这些进展为我国不同类型天然气的勘探开发提供了重要的技术支撑。随着理论的深化和技术方法的完善，天然气示踪的地球化学将会在非常规天然气勘探领域发挥更大作用。

英文摘要：

Over the first decade of the 21st century, a few great progresses have been made in the gas geochemistry theory and technique. Fundamental theories of gas geochemistry, such as influencing factors and tracers of hydro- gen isotopic composition, formation conditions and denotative meaning of 38Ar, accumulated mode and dating of 4 He, parent material tracer and migration fractionation effect of lighter hydrocarbon compounds and establishment of geochemical tracer system for natural gas accumulation, as well as new techniques and methods, such as hydro- carbon generation simulation experiment in high temperature and high pressure, online analysis of hydrogen iso- tope, isotope analysis of trace gas, sulfur isotope GC-IRMS direct measurement method of H2S, new methods of rare gas analysis, new experimental approach for adsorbed gas, have been either improved or achieved. These de- velopments provide important supports, even the key technical supports, for exploring and developing different type natural gas deposits in China. The gas tracer geochemistry will be play a more and more important role in the un- conventional natural gas exploration as its theory and technique are being improved.