Wells – Above ground apparatus – With assembly or disassembly means
Patent
1978-06-05
1980-08-05
Schwadron, Martin P.
Wells
Above ground apparatus
With assembly or disassembly means
251 1A, 277 11, E21B 3306
Patent
active
042157471
ABSTRACT:
A blowout preventer with an aligning apparatus having a housing with a vertical bore therethrough and a blowout preventer in one portion of the housing with guideways extending outward from the bore, aligning guideways in the housing spaced from and parallel to the blowout preventer guideways, an aligning ram in each of the aligning guideways with a piston for extending and retracting the aligning ram, each aligning ram having a carrier slidable in the aligning guideway with a cam surface and a jaw having a mating cam surface and mounted on the carrier with the respective cam surfaces being in engagement, the outer surface of the jaw being substantially perpendicular to the axis of the aligning guideways and adapted to engage tubing within the housing bore, the cam surfaces of opposing aligning rams being angled to cause the opposing jaws to move transversely in the aligning guideways when they come into engagement with tubing to cause the tubing to be moved with the jaws into the preferred position for closing the blowout preventer on the tubing.
REFERENCES:
patent: 3554278 (1971-01-01), Reistle et al.
patent: 3955622 (1976-05-01), Jones
patent: 3957113 (1976-05-01), Jones et al.
Cox Fern H.
Just Friedrich E.
Taylor William M.
Cameron Iron Works, Inc.
Gerard Richard
Schwadron Martin P.
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