Sub-sea well intervention vessel and method

Details Sub-sea well intervention vessel and method Sub-sea well intervention vessel and method

B - Operations, Transporting

63

B

B63B 35/44 (2006.01) E21B 15/02 (2006.01)

Patent

CA 2561243

A sub-sea well intervention vessel includes a dynamically positionable tanker and direct well intervention equipment mounted on the tanker deck. The intervention equipment includes drilling equipment for performing underbalanced drilling and hydrocarbon liquid separation. A separate production riser is provided so that simultaneous drilling and production can be performed via separate risers. The driller riser is selectively disconnectable from the well so that the tanker can be dynamically repositioned over the well. A turret mooring system is provided such that the production riser can remain in operation during repositioning about the turret. The hydrocarbon liquid separator is connected to a separator of the production plant.

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