中文摘要：

中国含煤地层分布广泛、厚度大,其中的煤岩、页岩、暗色泥岩和暗色灰岩等具有“多阶连续生气”的特点,气源供给充足,因而含煤地层天然气资源潜力巨大。不同相态天然气赋存机理各异且相互之间存在“动态转化”,源内体系主要是吸附气和部分游离气,可以形成煤层气藏和页岩气藏;源内游离气经历初次运移,以源外游离气、溶解气、输导体吸附气形式存在,主要形成常规圈闭气藏、致密气藏和水溶气藏。因此,含煤地层天然气具有“多源多相、动态转化”的特点,形成了多种类型气藏共生的独特现象。通过建立含煤地层多类型气藏的共生组合模式,分析了不同类型气藏的成因机制及分布规律,提出了沁水盆地含煤地层天然气统筹勘探方法,针对不同类型气藏及其组合模式,通盘筹划、优化程序、协同部署,实现多类型气藏快速高效勘探。沁水盆地多类型共生气藏形成了7种勘探目标：包括“四气”共生组合1种（即煤层气＋致密砂岩气＋页岩气＋常规圈闭气）、“三气”共生组合2种（即煤层气＋致密砂岩气＋页岩气和煤层气＋致密砂岩气＋常规气）、“两气”共生组合1种（即页岩气＋常规气）和独立气藏类型3种（即煤层气、页岩气、常规气分别独立成藏）,明确了沁水盆地不同组合类型气藏的有利分布区,并提出了气藏共生组合适用的统筹勘探思路与方法。

英文摘要：

Exploration practices show that coal, shale, dark mudstone and dark limestone can generate gas in coal-bearing strata.And the gas generation process is continuous and has the characteristics of multisource and multistage.Coal-bearing source rock provides adequate supply of gas.In addition,the thickness of coal-bearing strata is big,and the distribution is wide.It follows that coal-bearing strata have great potential of natural gas.Natural gas of different phase has different occurrence mechanism. And there exists dynamic transformation between each other. The internal system of source rock are mainly free gas and adsorbed gas,which can form coal bed methane（CBM） reservoir and shale gas （SG） reservoir.Free gas in the internal system after primary migration exists in the form of free gas in external source system, dissolved gas and adsorbed gas in transport system. The external source system mainly formed conventional gas （CG） reservoir,tight gas （TG） reservoir and water-soluble gas （WSG） reservoir.The gas characteristics of coal-bearing strata with multisource, multistage and dynamic transformation lead to the symbiosis phenomenon of multiple gases in different reservoirs.Through the establishment of symbiotic model of the multiple gas reservoir in the coal-bearing strata, this article analyzed the formation mechanism and distribution of different types of gas reservoirs and put forward the concept and basic method of overall exploration in coal-bearing strata.Overall exploration focused not only on the target layers, but also on an overall consideration exploration style with ＂multi-depth, multiple and full range＂. Through overall planning, optimization pro- gram and collaborative deployment,it will realize the goal of rapid and efficient exploration.Taking Qinshui Basin as an example, seven exploration combination modes were put forward： symbiotic combination of four types of gas reservoirs ： CBM＋ TG＋ SG＋ CG ; three types ： CBM ＋ TG＋SG and CBM＋TG＋CG ; two types： SG?