system and method for intervention without rising pipe or abandonment of an underwater well, and fixer.

摘要

The invention relates to a system, a fastener, and an associated method for intervention without riser pipe or abandonment of an underwater well (40), the system comprising means for lowering and / or retrieving drill line tools (19) or equipment of a surface installation (18) at an underwater location, the system comprising: - a pressure control head (2) having a through hole for receiving a drill cable (16), wherein the pressure control head (2), during use, allows access to the subsea well (40) for the drill cable and serves as a barrier when the drill cable (16) and drill cable tool (19) are brought into and out of the underwater well (40), - a fastener (17) connected to the pch (2); - a drill cable tool (19) connected to the drill cable (16), and wherein the fastener (17) is adapted to clamp around or be released from the drill cable (16) so that lowering and / or recovery of the pressure control head (2) and the drill cable tool (19) are performed using the drill cable (16).