초록 ▼

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. Addit

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.

대표청구항 ▼

[ What is claimed is:] [42.] A choke operatively positionable within a subterranean well, the choke comprising:a generally tubular inner cage having axially spaced apart first and second ports formed through a sidewall portion thereof;first and second seats carried on the cage axially between the fi

[ What is claimed is:] [42.] A choke operatively positionable within a subterranean well, the choke comprising:a generally tubular inner cage having axially spaced apart first and second ports formed through a sidewall portion thereof;first and second seats carried on the cage axially between the first and second ports; andfirst and second sleeves externally slidingly disposed on the cage.