... 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 ... Accumulative fluid volume, CBM production rate, Valve(on production line) position, Balance valve position. 2-3-7. Can ...