Preloaded riser coupling system

Details Preloaded riser coupling system Preloaded riser coupling system

2011-06-21

2011-06-21

Beach, Thomas A (Department: 3671)

Wells

Submerged well

Connection or disconnection of submerged members remotely...

C166S359000, C166S344000, C166S367000, C285S322000

Reexamination Certificate

active

07963336

ABSTRACT:
An offshore riser system has riser joints, each having a pin and a box. The pin has an external grooved profile that is engaged by a locking element carried by the box of another riser joint. An actuating ring engages with the locking element to move it into the locked position. A retractable spider supports the string of riser while the new joint is being made up. A makeup tool on the riser deploying floor moves the ring relative to the locking element, causing the locking element to move to the locked position.

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