The reasonable selection of drainage equipment is a prerequisite for ensuring continuous,sta-ble,and reasonable drainage and production of coalbed methane wells.The main drainage equipment used in coalbed methane wells include rod pump,tubular pump,top drive screw pump,electric submers-ible screw pump,hydraulic concentric rodless pump,and other types.Elaborated on the different princi-ples of drainage equipment,as well as their advantages,disadvantages,and applicable conditions.And the application of different drainage equipment in different conditions of coalbed methane wells in Pan-zhuang Block was analyzed.Adaptability analysis was conducted from multiple perspectives such as pump inspection cycle,pump inspection reasons,and prevention of eccentric wear,coal powder,and whether it can meet the requirements of submergence depth.The applicability conditions of various drainage equipment for coalbed methane wells were summarized considering multiple factors such as ground condi-tions,wellbore conditions,reservoir conditions,and cost.This provides important reference value for the optimization of drainage equipment in Panzhuang Block and similar coalbed methane wells.
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