Casing, tubing strings locked into wellhead with friction grip device

摘要

Amethod of supporting and connecting casing and tubing hangers within wellhead housings using a friction holding system known as POS-GRIP has been developed by UK based Plexus Ocean Systems limited, as an alternative to the present means of landing strings. Also, the method can be used in the design of high capacity, low stress hydraulic connectors for use on subsea and to connect deepwa-ter riser joints. The system uses the tried and tested principal of elastically deforming a tubular body onto an inner member with external force, so as to create a reversible friction-hold.