Abstract: Poor connectivity and low permeability of coal fissure system need to be modified by using fracturing technology to increase the production. This paper, based on a case study of CBM wells fracturing technologies of Jincheng anthracite mining group, analyzes the pros and cons of hydraulic fracturing, nitrogen shock fracturing, high-energy gas fracturing and plasma pulse fracturing, compares their improved effects, aiming at offering references for selection of fracturing technologies and research direction. Active hydraulic fracturing is the chief means in raising the CBM production, but needs improvement in loose low-permeability and deep coal seams. Adaptability of gel and clean fracturing fluids to variable CBM reservoirs need further studies, and cost shall be lowered. Nitrogen shock fracturing is currently in tentative stage, which requires further research study in fracturing mechanism and technical adaptability. High-energy gas fracturing is not working well in deep coal seam and thin-bedded reservoirs, needing a technical milestone. Plasma pulse fracturing works well in old wells with excellent effect and should be used widely. 

Key words: CBM, hydraulic fracturing, nitrogen shock fracturing, high-energy gas fracturing, plasma pulse fracturing 

摘要： 由于煤层裂隙系统连通性差，渗透率低，需要通过压裂技术改造煤层气储集层来实现增产。以晋煤集团煤层气井4类压裂技术为主要研究对象，分析水力压裂、氮气震动压裂、高能气体压裂和等离子脉冲压裂技术的优缺点，并对比各类压裂技术的改造效果，以期对压裂施工工艺的选择和压裂工艺研究方向的确定具有指导作用。研究表明，活性水压裂是煤层气井压裂增产的主要手段，但在松软低渗及深部煤层气藏改造效果方面有待继续突破；胶液和清洁压裂液压裂对不同煤层气藏的适应性有待进一步研究，同时需要降低成本，提高其性价比；氮气震动压裂目前仍处于试验研究阶段，需要继续研究压裂机理及工艺的适应性；高能气体压裂在深部煤层气藏及薄煤层气藏中的解堵增产效果不明显，还未实现工艺上的突破；等离子脉冲压裂在煤层气藏中应用于老井解堵，具有良好的效果和推广价值。 

关键词: 煤层气；水力压裂；氮气震动压裂；高能气体压裂；等离子脉冲压裂