Antirotation device for subsea wellheads

Details Antirotation device for subsea wellheads Antirotation device for subsea wellheads

1991-12-13

1994-03-01

Taylor, Dennis L.

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

Submerging, raising, or manipulating line of pipe or cable...

4052231, 405224, 166349, 166351, E02D 574

Patent

active

052901262

ABSTRACT:
A subsea well assembly has an antirotation device to prevent rotation of an inner wellhead housing within an outer wellhead housing. A number of slots are formed in the upper rim of the outer wellhead housing. The slots have open upper ends. A number of pins are mounted to the exterior of the inner wellhead housing. Guide surfaces extend upward from the slots to guide the pins as the inner wellhead housing is lowered into the outer wellhead housing. The pins locate in the slots to prevent rotation.

REFERENCES:
patent: 2517391 (1950-08-01), Ernestus
patent: 3220245 (1965-11-01), Van Winkle
patent: 3239246 (1966-03-01), Barber
patent: 3481396 (1969-12-01), Williams et al.
patent: 3702707 (1972-11-01), Rosan
patent: 3973635 (1976-08-01), Gatlin et al.
patent: 4293146 (1981-10-01), Beynet et al.
patent: 4907914 (1990-03-01), Gunderson et al.

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