Method of adapting a downhole multi-phase twin screw pump...

Details Method of adapting a downhole multi-phase twin screw pump... Method of adapting a downhole multi-phase twin screw pump...

2006-08-22

2006-08-22

Neuder, William (Department: 3672)

Wells

Processes

Assembling well part

C166S105500, C417S408000, C418S009000

Reexamination Certificate

active

07093665

ABSTRACT:
A method of adapting a downhole multi-phase twin screw pump (10) for use in wells having a high gas content. A first step involves positioning a supplementary liquid channel (22,122) in a housing (12) of the pump in fluid communication with a pumping screw near an intake end (14) of the pump. A second step involves feeding supplementary liquid through the supplementary liquid channel to the pumping screw, thereby enhancing a liquid seal around the pumping screw.

REFERENCES:
patent: 4623305 (1986-11-01), Segerstrom
patent: 5871340 (1999-02-01), Hatton
patent: 6007306 (1999-12-01), Vilagines
patent: 6234030 (2001-05-01), Butler
patent: 6413065 (2002-07-01), Dass
patent: 2282231 (2000-09-01), None
patent: 0 216 406 (1987-01-01), None

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