ESP/gas lift back-up

Details ESP/gas lift back-up ESP/gas lift back-up

2008-04-29

2008-04-29

Gay, Jennifer H. (Department: 3676)

Wells

Processes

Producing the well

C166S369000, C166S105000

Reexamination Certificate

active

11105840

ABSTRACT:
A well production system has a string of production tubing with a junction having two legs. A first leg is sealed to the casing by a packer located above well perforations. A submersible pump assembly is secured to a second leg, the pump having an intake in the tubing annulus surrounding the first leg. A gas lift valve is secured to the tubing. A port in the first leg allows well fluid to flow out of the first leg to the intake while in the pumping mode. In the pumping mode, a barrier is placed in the first leg above the port and the port opened to cause well fluid to the pump intake. In the gas lift mode, the port is closed and a barrier is placed between the second leg and the first leg.

REFERENCES:
patent: 3123983 (1964-03-01), Sliepcevich
patent: 6138758 (2000-10-01), Shaw et al.
patent: 6325152 (2001-12-01), Kelley et al.
patent: 2004/0060707 (2004-04-01), Bearden et al.
patent: 2005/0269095 (2005-12-01), Fairbanks
patent: 2006/0151178 (2006-07-01), Howard et al.
ESP's and Gas Lift on Long Subsea Tie-Backs—Experiences from Development Challenges in the Gannet E Field, by P. Holweg, published 7thEuropean ESP Roundtable on Feb. 6, 2002.
Combined ESP/Gas Lift Completions in High GOR/High Sand Wells on Australian Northwest Shelf, b;y K.J. Aitken, published SPE Gulfcoast ESP Workshop on Apr. 25, 2001.
Combined ESP/Auto Gas lift Completion Design—Stag Field, published 6thEuropean ESP Roundtable on Feb. 15, 2000.
ESP-Gas Lift Combination—A Successful Trial for the First Time, published SPE Gulfcoast ESP Workshop on Apr. 28, 1999.
Production Optimization by Combined Artificial Systems and Its Application, published SPE Gulfcoast ESP Workshop on Apr. 28, 1999.

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