Flow control apparatus with specific latching means for use in a

Details Flow control apparatus with specific latching means for use in a Flow control apparatus with specific latching means for use in a

1999-07-01

2000-07-04

Lillis, Eileen Dunn

Wells

Valves, closures or changeable restrictors

Longitudinally movable operator

166317, 1663324, 166386, E21B 3414

Patent

active

060824581

ABSTRACT:
A flow control apparatus and associated methods of using provide enhanced longevity and reliability without requiring complex mechanisms. In a described embodiment, a choke for use within a subterranean well has multiple trim sets which may be selected by manipulation of an inner tubular cage. Additional features include provision of releasable latches to maintain the cage in a desired position, and utilization of biasing members to bias the cage toward a neutral position in which all of the trim sets are closed.

REFERENCES:
patent: 1747910 (1930-02-01), Siefarth
patent: 4062406 (1977-12-01), Akkerman et al.
patent: 4254832 (1981-03-01), Patton et al.
patent: 5156220 (1992-10-01), Forehand et al.
patent: 5411095 (1995-05-01), Ehlinger et al.
patent: 5957207 (1999-09-01), Schnatzmeyer

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