Patent · US Active

Compact cable suspended pumping system for dewatering gas wells

US8408312B2 · kind B2 · utility

8Cited by

15References

23Claims

0Family size

Assignee

ZEITECS B.V. · NL

Inventors

Lance I. Fielder · Sugar Land, US
Christian Carstensen · Aachen, DE
Rik W. De Doncker · Leuven, BE
Helge Brauer · Gochsheim, DE
Holger Franz · Aachen, DE
Johannes P. Schmidt · Aachen, DE
Benjamin Eduard Wilkosz · Aachen, DE

Key dates

Filing date	Jun 7, 2010
Grant date	Apr 2, 2013
Priority date	—
Expiry date	Jan 24, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH02K2213/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method of unloading liquid from a reservoir includes deploying a pumping system into a wellbore to a location proximate the reservoir using a cable. The pumping system includes a multi-section motor, an isolation device, and a pump. The method further includes supplying a power signal from the surface to the motor via the cable and sequentially operating each section of the motor to mimic a multi-phase motor, thereby driving the pump and lowering a liquid level in the tubular string to a level proximate the reservoir.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.