Wells – Submerged well – Connection or disconnection of submerged members remotely...
Reexamination Certificate
2007-11-20
2007-11-20
Beach, Thomas A (Department: 3671)
Wells
Submerged well
Connection or disconnection of submerged members remotely...
C166S358000, C166S381000, C175S005000
Reexamination Certificate
active
11284425
ABSTRACT:
What is provided is a method and apparatus which 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 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 of the swivel.
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Caillouet Kenneth G.
Robichaux Kip M.
Robichaux Terry P.
Beach Thomas A
Garvey, Smith Nehrbass & North, L.L.C.
Mako Rentals, Inc.
North Brett A.
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