Wells – Above ground apparatus – With seal for reciprocating member
Patent
1989-03-14
1990-08-28
Kisliuk, Bruce M.
Wells
Above ground apparatus
With seal for reciprocating member
166 86, 166 97, 166368, 277 72FM, 277 73, 277127, E21B 33076
Patent
active
049517457
ABSTRACT:
An hydraulically actuated stuffing box for use on a lubricator assembly or a grease injector section to seal around flexible line run through the lubricator assembly into an underwater well. The stuffing box has a piston on which control fluid acts, compressing a resilient seal in the stuffing box to seal around the line. The piston is biased to a position not compressing the seal to prevent hydrostatic pressure of the control fluid from compressing the seal to seize the line in deep water. The stuffing box and grease injector section have a through passageway for line. Both have an internal valve, which will automatically prevent surrounding water flow into a well or well outflow into the water when no flexible line is in the passageway.
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BlueJay Oil Tools Stuffing Box Safety Valve in Drilling-DCW, Sep. 1977 advertisement.
Otis Engineering Corp., "General Sales Catalog", OEC 5338, Mar. 1985, p. 298.
Boyle Colin S.
Gentry Ernest B.
Cox Roland O.
Kisliuk Bruce M.
Otis Engineering Corporation
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