Telescopic joint control line system

Details Telescopic joint control line system Telescopic joint control line system

1996-08-09

1998-03-17

Dang, Hoang C.

Wells

Submerged well

Means removably connected to permanent well structure

E21B 1707

Patent

active

057276307

ABSTRACT:
A telescopic joint for an upper end of an offshore drilling riser is installed and controlled remotely. The telescopic joint has inner and outer telescoping barrels. A mandrel is located on the lower end of the outer barrel, the mandrel landing within a support ring which is supported by constant tension cables extending from the vessel. Control fluid passages are located in the mandrel for registering with control fluid passages in the support ring. Permanent control fluid lines extend between various points of the outer barrel and the mandrel. Control fluid hoses connect the support ring to the vessel. Fluid communication is achieved once the telescopic joint is oriented and landed in the support ring.

REFERENCES:
patent: 3643751 (1972-02-01), Crickmer
patent: 3820600 (1974-06-01), Baugh
patent: 3955621 (1976-05-01), Webb
patent: 3957079 (1976-05-01), Whiteman
patent: 4364433 (1982-12-01), Fisher et al.
patent: 4403658 (1983-09-01), Watkins
patent: 4428433 (1984-01-01), Watkins
patent: 4502543 (1985-03-01), Outhwaite
patent: 4592426 (1986-06-01), Neeley
patent: 4712620 (1987-12-01), Lim et al.
patent: 4726424 (1988-02-01), Raulins

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