Electric submersible pumping system for dewatering gas wells

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.