Patent ID: 8770271

Claim:
A pumping system, comprising: a surface controller operable to supply a direct current (DC) power signal to a coaxial cable; a downhole assembly, comprising: a submersible high speed switched reluctance electric motor operable to rotate a drive shaft; a high speed centrifugal multi-stage pump for dewatering a gas well, rotationally fixed to the drive shaft, and having a housing including a nozzle operable to create a jet effect; an isolation device having an expandable seal and an anchor and operable to expand into engagement with a tubular string, thereby fluidly isolating an inlet of the multi-stage pump from an outlet of the multi-stage pump and rotationally fixing the motor and the pump to the tubular string; an actuator for expanding the isolation device independently of the multi-stage pump; a power conversion module (PCM) operable to receive the DC power signal from the cable and sequentially switch the DC signal, thereby supplying an output power signal to the motor; and the cable having two coaxial conductors and high strength metal or alloy armor to support a dry weight of the downhole assembly and the cable and in electrical communication with the motor, wherein: a maximum outer diameter of the downhole assembly and cable is less than or equal to two inches, the high speed of the motor and pump is greater than or equal to ten thousand revolutions per minute (RPM), and the actuator is connected to the PCM or the cable for operation thereby.