Hydraulic flow control system with an internal compensator...

Details Hydraulic flow control system with an internal compensator... Hydraulic flow control system with an internal compensator...

2008-03-11

2008-03-11

Neuder, William P (Department: 3672)

Wells

Processes

Assembling well part

C166S078100, C166S095100

Reexamination Certificate

active

11698512

ABSTRACT:
A compensator sleeve assembly for use with a hydraulic extension system used to handle safety valves designed to shut off high pressure upward flow through drill pipe or tubing. The compensator sleeve assembly, amounted on an adjustable arm slide, has a steel sleeve for holding the safety valve, an arrangement of circumferentially space-apart spring sets which allow the safety valve to “float” and tilt from the vertical in any direction and a hydraulic-powered chain drive belt for rotating the safety valve.

REFERENCES:
patent: 1894912 (1933-01-01), Otis
patent: 4423774 (1984-01-01), Mefford
patent: 4442892 (1984-04-01), Delesandri
patent: 4846271 (1989-07-01), Delesandri
patent: 5092399 (1992-03-01), Lang
patent: 5213157 (1993-05-01), Wills
patent: 5806589 (1998-09-01), Lang
patent: 6189620 (2001-02-01), McDowell
patent: 6488094 (2002-12-01), McDowell

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