Compact cable suspended pumping system for lubricator deployment

US8851165B2 · kind B2 · utility

Assignee

• ZEITECS B.V. · NL

Inventors

• Lance I. Fielder · Sugar Land, US
• Matthew Crowley · Katy, US
• Holger Franz · Aachen, DE
• Johannes P. Schmidt · Aachen, DE
• Benjamin Eduard Wilkosz · Aachen, DE

Key dates

• Filing date: Aug 6, 2013
• Grant date: Oct 7, 2014
• Expiry date: Aug 6, 2033

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04D29/606
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A pumping system includes a submersible high speed electric motor operable to rotate a drive shaft; a high speed pump rotationally connected to the drive shaft and including a rotor having one or more helicoidal vanes; an isolation device operable to expand into engagement with a production tubing string, thereby fluidly isolating an inlet of the pump from an outlet of the pump and rotationally connecting the motor and the pump to the casing string; a cable having two or less conductors and a strength sufficient to support the motor, the pump, the isolation device, and a power conversion module (PCM); and the PCM operable to receive a DC power signal from the cable, and supply a second power signal to the motor.