Wells – Submerged well – Means removably connected to permanent well structure
Reexamination Certificate
2005-11-29
2005-11-29
Will, Thomas B. (Department: 3671)
Wells
Submerged well
Means removably connected to permanent well structure
C166S366000, C166S382000, C175S007000
Reexamination Certificate
active
06968902
ABSTRACT:
Subsea wells are drilled and completed with an offshore floating platform in a manner that allows simultaneous work on more than one well. A first well is drilled and cased. Then a tubing hanger is run through a drilling riser and landed in the wellhead housing. Then, with the same floating platform, the drilling riser is disconnected and moved to a second well. While performing operations on the second well, the operator lowers a production tree from the floating platform on a lift line, and connects it to the first wellhead housing. An ROV assisted subsea plug removal tool is used for plug removal and setting operations. Seabed separation is configured upstream of a production choke valve.
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Dezen Francisco
Fenton Stephen P.
Langford Gawain
Michaelsen Jarle
Soelvik Nils Arne
Beach Thomas A
Bracewell & Giuliani LLP
Vetco Gray Inc.
Will Thomas B.
LandOfFree
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