E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/12 (2006.01) E21B 34/06 (2006.01)
Patent
CA 2243795
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.
Halliburton Energy Services Inc.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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