Subsea well communications apparatus and method using...

Details Subsea well communications apparatus and method using... Subsea well communications apparatus and method using...

2005-08-30

2008-08-26

Mayo, Tara L. (Department: 3671)

Wells

Submerged well

Means removably connected to permanent well structure

C166S350000, C166S367000, C405S224400

Reexamination Certificate

active

07416025

ABSTRACT:
Disclosed are compliant variable tension risers (106) to connect deep-water subsea wellheads (102) to a single floating platform (104) in wet tree or dry try systems. The variable tension risers (106) allow several subsea wellheads (102), in water depths from 1220 to 3050 meters, at lateral offsets from one-tenth to twice the depth or more, to tie back to a single floating platform (104). Also disclosed are methods to counter buoyancy and install variable tension risers using a weighted chain ballast line (228, 230).

REFERENCES:
patent: 4448266 (1984-05-01), Potts
patent: 4730677 (1988-03-01), Pearce et al.
patent: 5758990 (1998-06-01), Davies et al.
patent: 6062769 (2000-05-01), Cunningham

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