Telescoping riser joint and improved packer therefor

Details Telescoping riser joint and improved packer therefor Telescoping riser joint and improved packer therefor

1991-09-03

1993-02-09

Novosad, Stephen J.

Wells

Submerged well

Riser

277 343, E21B 33035, E21B 1701

Patent

active

051846810

ABSTRACT:
An improved riser telescoping joint including a riser mandrel, an annular resilient packer carried by the riser mandrel, a telescoping mandrel positioned within and movable with respect to said riser mandrel, a line connected to the riser mandrel for delivering fluid under a predetermined pressure against the exterior of said packer to cuase it to seal against the exertion of said telescoping mandrel and a restricted flow passage communicating from the exterior to the interior of the packer to supply a limited amount of said pressure fluid as a lubricant between the interior of the packer and the exterior of the telescoping mandrel.

REFERENCES:
patent: 2071197 (1937-02-01), Burns et al.
patent: 2176355 (1939-10-01), Otis
patent: 2192805 (1940-03-01), Seamark
patent: 2458270 (1949-01-01), Humason
patent: 2746709 (1956-05-01), Minor
patent: 2843349 (1958-07-01), Meyer
patent: 3212408 (1965-10-01), Randol
patent: 3471156 (1969-10-01), Burns et al.
patent: 3492007 (1970-01-01), Jones
patent: 3815926 (1974-06-01), Vore
patent: 3955621 (1976-05-01), Webb
patent: 4632403 (1986-12-01), Ishitani et al.

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