Evaluation Method of Coalded Methane Wells Aquosity in Shanxi Baode Area

For CBM(coalbed methane)well producing excessive water and long gas production cycle of Baode CBM area,we systematically summarize the influence of single factor on coal seam water production,such as,coal structure,depth,coal floor,industrial components,etc.In order to quantitatively evaluate the coal seam water production of a single well,the integrated intensity factor of coal rock is introduced.The coal No.4+No.5,coal No.8+No.9and their top floors and bottom floors are combined as a system to evaluate the water production of single well.It is found that coal seam water production is related to single factor,has exponential relationship with the integrated intensity factor of coal rock.Finally water production prediction model for single well is established by combining with the single factor and integrated intensity factor of coal rock,and application effect is better.