RISER WITH INTERNAL ROTATING FLOW CONTROL DEVICE

摘要

A riser pipe system for releasably securing a rotating flow control device internally within a riser string for use in offshore drilling can include 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 removable retaining member. The latch assembly and seal assembly may be hydraulically or pneumatically actuated together or separately.

主权项

1. A system for securing a rotating flow control device (“RFCD”) within a riser string, the system comprising:
a riser pipe section configured to connect in the riser string below a slip joint; and wherein the riser pipe section comprises a latch assembly, the latch assembly comprising at least one lock member which displaces radially inward and thereby secures the RFCD within the riser string.