| 摘要 |
Apparatus for recovery of sections of tubing and inter alia, the tubing hanger, from a subsea well to enable the abandonment of a subsea well to be accomplished from a mono-hull vessel includes a dual gripper assembly (1) adapted for onshore or offshore deployment is configured to handle oilfield tubulars and associated completion equipment and configured for attachment to a wellhead structure and subsequent reciprocation cycles whereby oilfield tubulars can be run-in hole or pulled to surface without requiring a riser. A cutter mechanism (22) is disclosed for severing sections of tubular to form a clean cut end for attachment of a connection mandrel. The individually controllable gripping devices (19, 20) are operated such that during a reciprocation cycle at least one of the gripping devices is engaged around the tubular body for supporting same, and the other is spaced from the tubular body sufficiently for said other gripping device to slide over the tubular body to be selectively re-positioned to take up a fresh gripping position on the same or a further tubular body. The respective gripping devices can be used to bring together tubulars to be connected using a connection mandrel (28) or to manipulate a running and recovery tool (26), and to make up or break standard tool joints of wellbore tubulars. A method for pulling or running a completion is disclosed. |
