Study on CBM Production Main Controlling Factors of Underground Fracturing

In order to improve coal reservoir permeability,the coal introduces hydraulic fracturing for coalbed methane extraction and gas treatment. By influencing the effect of hydraulic fracturing production Coalbed methane geology characteristics and fracturing technology statistical analysis of the sample,it researches how to determine the reservoir permeability,coal structure,hole pattern technology and so is the main controlling factors of production capacity. The injection volume and pressure,seam depth and so on product less affected,the study results provide a useful reference for underground hydraulic fracturing designer.