Wells – Submerged well – Means removably connected to permanent well structure
Reexamination Certificate
2007-05-08
2010-11-09
Beach, Thomas A (Department: 3671)
Wells
Submerged well
Means removably connected to permanent well structure
C166S339000, C166S381000, C175S005000
Reexamination Certificate
active
07828064
ABSTRACT:
What is provided is a method and apparatus wherein a swivel can be detachably connected to an annular blowout preventer thereby separating the drilling fluid or mud into upper and lower sections and allowing the fluid to be displaced in two stages, such as while the drill string is being rotated and/or reciprocated. In one embodiment the sleeve or housing can be rotatably and sealably connected to a mandrel. The swivel can be incorporated into a drill or well string and enabling string sections both above and below the sleeve to be rotated in relation to the sleeve. In one embodiment the drill or well string does not move in a longitudinal direction relative to the swivel. In one embodiment, the drill or well string does move longitudinally relative to the sleeve or housing of the swivel.
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Caillouet Kenneth G.
Robichaux Kip M.
Robichaux Terry P.
Beach Thomas A
Garvey, Smith, Nehrbrass & North, L.L.C.
Mako Rentals, Inc.
North Brett A.
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