Colonne montante comportant un dispositif rotatif de regulation de debit interne

Riser with internal rotating flow control device


A riser pipe system is provided for releasably securing a rotating flow control device internally within a riser string for use in offshore drilling. The system includes a riser pipe section, a removable latch assembly for releasably securing the RFCD, and optionally, a removable seal assembly for sealing against the RFCD. The latch and seal assemblies are disposed within the riser pipe section and axially restrained by at least one removeable retaining member. The latch assembly and seal assembly may be hydraulically or pneumatically actuated together or separately.




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