运用水平井分段压裂开采煤层气是单井增产的最新手段之一，其中人工裂缝参数设计是影响煤层气水平井压裂后投产效果的重要因素。通过数值模拟研究了沁水拗陷东翼中段区块压裂后单一指标变化下不同裂缝条数、裂缝长度、裂缝间距及导流能力对煤层气水平井产能的影响，采用正交试验法定量研究不同裂缝参数值对压裂水平井产能影响的主次顺序和显著程度，进而确定出研究区内煤层气水平井最佳的压裂裂缝参数组合，为目前处于起步阶段的煤层气水平井压裂优化设计提供参考。研究结果表明，煤层气水平井压裂裂缝条数保持2~3条，裂缝长度130~160 m，裂缝间距400~600 m，导流能力15~25 um²·cm，压裂效果和经济效益最理想。

Application of horizontal well staged fracturing in coalbed methane exploition is a new means for increasing single well production and design of artificial fracture parameters is one of important factors affecting coalbed methane production. Adopted is numerical simulation to analyze number, lengths and spacing of various fractures in middle blocks of the east wing in Qinshui depression after fracturing and research effects of these fractures and their flow conductivity on CBM horizontal well productivity and utilized is 0rthogonal test method to quantitatively study effects of various fracture parameters on fracturing horizontal well productivity and then determine the optimal combination of CBM horizontal well fracturing fracture parameters in the concerned area, which will provide valuable reference for CBM horizontal well fracturing optimization design still in the initial stage. Study results show that the fracturing effects and economic benefits are optimal in the case of 2 or 3 fracturs,130-160m long each and 400-600m spacing between each other and 15-25 um² • cm of diverting capacity.