Subsea tubing hanger with multiple vertical bores and concentric

Details Subsea tubing hanger with multiple vertical bores and concentric Subsea tubing hanger with multiple vertical bores and concentric

1985-06-07

1987-03-24

Novosad, Stephen J.

Wells

Submerged well

Connection or disconnection of submerged members remotely...

166313, 166 751, 2851372, E21B 33043

Patent

active

046518312

ABSTRACT:
A tubing hanger for landing is a subsea wellhead system below a multiple bore valve package in a preferred but not essential orientation with a first concentric and a second eccentric bore both suitable for vertical access for passage of tools and the such like when in the preferred orientation, the first bore being contained within a first concentric seal and the second bore being contained within an annular area outside the first concentric seal and within a second larger concentric seal such than when the tubing hanger is not landed in the preferred orientation vertical access is not provided but the valve package can be landed and hydraulic communication will be provided through both bores.

REFERENCES:
patent: 3097695 (1963-07-01), Le Rouax et al.
patent: 3451481 (1969-06-01), Lanmon, II
patent: 3834460 (1974-09-01), Brun et al.
patent: 4154302 (1979-05-01), Cugini

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