Electric workover rig is a new—type, high—efficiency, energy—saving, environmental—protection workover equipment, which is made up of the second—class chassis, voltage transformer, power distribution cabinet, frequency conversion control cabinet, AC frequency conversion motor, angle gear box, drawworks assembly, mast assembly, traveling system, electric lubricating system, air compression system, hydraulic and pneumatic control system and its accessories, etc. The wellsite power is used as its power source when it works. The power is output through power distribution box (1 140V or 380V) of the pumping unit in well site, changed into 380V AC after passing through voltage transformer, then put into power distribution box and AC frequency conversion cabinet, then put into the main motor after passing through AC frequency conversion controller. The main motor drives the angle gear box and the drawworks to do the trip up and down tubing operation.
|Workover depth (2 7/8" upset tubing)
|Nomial hook load
|Max. hook load
|Power of Motor
|Motor energy consumption of single well operation