Valves for use in wells

Details Valves for use in wells Valves for use in wells

2005-12-13

2005-12-13

Dang, Hoang (Department: 3672)

Wells

Processes

Placing or shifting well part

C166S320000, C166S334400

Reexamination Certificate

active

06973974

ABSTRACT:
A valve assembly to control the intake of fluid. The valve assembly has a valve body and a valve choke disposed therein. The valve choke has a choke bore through the interior of the valve choke. The valve choke has a plurality of orifices to the choke bore spaced at intervals along the valve choke. A seal is disposed between the valve body and valve choke. The valve system is operable to position the valve choke so that the seal is positioned between the valve body and the valve choke at the intervals between the plurality of orifices.

REFERENCES:
patent: 2663307 (1953-12-01), Birdwell
patent: 2988323 (1961-06-01), Conrad
patent: 3051243 (1962-08-01), Grimmer et al.
patent: 3151681 (1964-10-01), Cochran
patent: 4134454 (1979-01-01), Taylor
patent: 4403659 (1983-09-01), Upchurch
patent: 5211241 (1993-05-01), Mashaw et al.
patent: 5263683 (1993-11-01), Wong
patent: 5309993 (1994-05-01), Coon et al.
patent: 6276458 (2001-08-01), Malone et al.
patent: 6422317 (2002-07-01), Williamson, Jr.

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