Valves for use in wells

Wells – Valves – closures or changeable restrictors – Fluid operated

Reexamination Certificate

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Details

C166S332400, C166S334400

Reexamination Certificate

active

06966380

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.

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patent: WO 99/19602 (1999-04-01), None

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