EP 1485571 A1 20041215 - A TRIGGERING MECHANISM FOR DISCONNECTING A RISER FROM A RISER CONNECTOR
Title (en)
A TRIGGERING MECHANISM FOR DISCONNECTING A RISER FROM A RISER CONNECTOR
Title (de)
AUSLÖSEMECHANISMUS ZUM TRENNEN EINES STEIGROHRS VON EINEM STEIGROHRVERBINDER
Title (fr)
MECANISME DE DECLENCHEMENT PERMETTANT DE DECONNECTER UNE COLONNE MONTANTE D'UN RACCORD DE COLONNE MONTANTE
Publication
Application
Priority
- NO 0300031 W 20030203
- NO 20020534 A 20020201
- US 6031902 A 20020201
Abstract (en)
[origin: WO03064809A1] The invention relates to a triggering mechanism for a triggering valve (1) of a hydraulic emergency unlock circuit for unlocking hydraulically operated gripping members of a riser connector which connects a lower end of a riser (2) to a wellhead on a sea floor. The triggering mechanism comprises a cam ring (5) secured to a displaceable part (4) of a flex joint for the riser (2), and an actuator ring (8) which by means of hydraulic cylinders are translatory movable towards a stationary part (3) of the flex joint. An angular displacement (α) of the riser (2) causes an angular displacement (α) of the cam ring (5), which contacts the actuator ring (8) and forces the actuator ring (8) towards the stationary part (3) of the flex joint, causing an activating of a trigger (13) for the triggering valve (1).
[origin: WO03064809A1] The invention relates to a triggering mechanism for a triggering valve 1 of a hydraulic emergency unlock circuit for unlocking hydraulically operated gripping members of a riser connector which connects a lower end of a riser 2 to a wellhead on a sea floor. The triggering mechanism comprises a cam ring 5 secured to a displaceable part 4 of a flex joint for the riser 2, and an actuator ring 8 which by means of hydraulic cylinders are translatory movable towards a stationary part 3 of the flex joint. An angular displacement alpha of the riser 2 causes an angular displacement alpha of the cam ring 5, which contacts the actuator ring 8 and forces the actuator ring 8 towards the stationary part 3 of the flex joint, causing an activating of a trigger 13 for the triggering valve 1.
IPC 1-7
IPC 8 full level
E21B 33/038 (2006.01)
CPC (source: EP US)
E21B 33/038 (2013.01 - EP US)
Citation (search report)
See references of WO 03064809A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR
DOCDB simple family (publication)
WO 03064809 A1 20030807; AT E376118 T1 20071115; DE 60316923 D1 20071129; DK 1485571 T3 20080225; EP 1485571 A1 20041215; EP 1485571 B1 20071017; ES 2297124 T3 20080501; PT 1485571 E 20080124
DOCDB simple family (application)
NO 0300031 W 20030203; AT 03701952 T 20030203; DE 60316923 T 20030203; DK 03701952 T 20030203; EP 03701952 A 20030203; ES 03701952 T 20030203; PT 03701952 T 20030203