... Smart production equipment of Coal-bed methane 1. Smart production equipment of Coal-bed methane2-1. The main structure Down hole equipment:Sensor, ... , coil lead, cable protector, submersible cable, tubing. Surface equipment: CBM dedicated wellhead, cable junction box, storage tank, smart ... continuous dilute the fluid periodicly or random according to coal powder & sand production in various well. 2-3 ...