Wellhead stabilization

Details Wellhead stabilization Wellhead stabilization

1983-05-27

1985-02-19

Novosad, Stephen J.

Wells

Processes

Cementing, plugging or consolidating

166206, 166362, 166368, 166382, 285144, E21B 33043

Patent

active

044999500

ABSTRACT:
A sub-sea well assembly has features to eliminate side-to-side movement between a wellhead and a wellhead housing due to movement of the drilling vessel. The wellhead extends into the wellhead housing and is connected on its upper end to equipment extending to the vessel. Slips are located in an annular space between the wellhead housing passage and the exterior wall of the wellhead. The slips are mounted so that they will slide from the contracted position when the wellhead is being placed into the wellhead housing to an expanded position after the wellhead is locked into the wellhead housing. In the expanded position, the slips move downward to wedge, but are not weight bearing. The slips are self-actuating, with a spring to urge them downward into the expanded position.

REFERENCES:
patent: 3163217 (1964-12-01), Haeber
patent: 3195638 (1965-07-01), Le Rouax
patent: 3273915 (1966-09-01), Bishop et al.
patent: 3367002 (1968-02-01), Johnson
patent: 3521909 (1970-07-01), Brown
patent: 3540533 (1970-11-01), Morrill
patent: 4334342 (1982-06-01), Hall

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