Moonpool guidance system for drill strings having attached umbil

Details Moonpool guidance system for drill strings having attached umbil Moonpool guidance system for drill strings having attached umbil

1983-10-13

1985-04-23

Novosad, Stephen J.

Wells

Submerged well

Connection or disconnection of submerged members remotely...

175 10, 414745, 166352, E21B 1502, E21B 4104

Patent

active

045124086

ABSTRACT:
A system for guiding a drill string with an attached umbilical line through a moonpool of a floating structure. The system comprises a support means, and a workhead assembly secured to the outer end of the support means. The workhead assembly is adapted to engage the drill string and umbilical line without damaging the umbilical. The workhead assembly comprises a turntable support, which is secured to the support means, and a turntable. The turntable is positioned about the drill string and umbilical, and rests on the turntable support. Rollers on the turntable allow the drill string and umbilical line to move vertically through the turntable. Roller units on the turntable support allow the turntable and the engaged tool string and umbilical to rotate with respect to the support means.

REFERENCES:
patent: 3142343 (1964-07-01), Otteman et al.
patent: 3907338 (1975-09-01), Hayes, Jr. et al.
patent: 3976132 (1976-08-01), Harper
patent: 4325233 (1982-04-01), Haynes

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