Riser braking clamp apparatus

Details Riser braking clamp apparatus Riser braking clamp apparatus

1985-04-08

1986-10-14

Novosad, Stephen J.

Wells

Submerged well

Connection or disconnection of submerged members remotely...

166353, 166355, 166367, E21B 1909

Patent

active

046167072

ABSTRACT:
Apparatus for use in drilling a well from a floating vessel by means of a riser which connects the vessel's drilling equipment to a wellhead assembly adjacent the ocean floor. The riser is capable of being disconnected from the wellhead assembly and having the motion of its upper end arrested and subsequently secured to the vessel. The present riser braking clamp apparatus comprises braking elements integrally carried by the telescoping joint located at the upper end of the riser. Actuation of these braking elements prevents further telescopic movement of the telescopic joint, thereby preventing movement of the riser upper elements relative to the vessel.

REFERENCES:
patent: 3717002 (1973-02-01), O'Brien et al.
patent: 3771389 (1973-11-01), Coyne
patent: 3860270 (1975-01-01), Arnold
patent: 4456070 (1984-06-01), Watkins
patent: 4527817 (1985-07-01), Persson
patent: 4545437 (1985-10-01), Denison

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