Downhole latch

Details Downhole latch Downhole latch

2005-12-27

2005-12-27

Tsay, Frank S. (Department: 3672)

Wells

With eduction pump or plunger

C166S105200, C166S109000, C175S113000

Reexamination Certificate

active

06978830

ABSTRACT:
A progressive cavity pump pumps liquid downhole to a lower formation past a packer set in a casing of a wellbore. The rotor of the pump is axially restrained by a bearing assembly spaced below the pump for controlling uphole reactive loading on the rotor. Preferably the rotor is releasably coupled to the bearing assembly for release and recovery of the rotor from the bearing assembly. Such a releasable coupling is a latch comprising a plunger telescopically and releasably coupled with a housing using a dog and track arrangement, the dog and track utilizing the telescoping action to actuate the coupling and releasing of the latch.

REFERENCES:
patent: 3627067 (1971-12-01), Martinsen
patent: 3703104 (1972-11-01), Tamplen
patent: 4293146 (1981-10-01), Beynet et al.
patent: 4595054 (1986-06-01), Schroeder
patent: 4700778 (1987-10-01), Smith et al.
patent: 4738599 (1988-04-01), Shilling
patent: 4799546 (1989-01-01), Hensley et al.
patent: 4945987 (1990-08-01), Wittrisch
patent: 5009265 (1991-04-01), Bailey et al.
patent: 5058683 (1991-10-01), Godfrey et al.
patent: 5322136 (1994-06-01), Bui et al.
patent: 5590714 (1997-01-01), Van Steenwyk et al.
patent: 5857710 (1999-01-01), Leising et al.
patent: 6003621 (1999-12-01), Murray
patent: 6131663 (2000-10-01), Henley et al.
patent: 6247541 (2001-06-01), Ellis et al.
patent: 6510899 (2003-01-01), Sheiretov et al.

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