Offshore apparatus for carrying out operations in an offshore we

Wells – With below and above ground modification – Eduction pump or plunger in well

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9 8R, E21C 1900

Patent

active

039571122

ABSTRACT:
A marine riser or conductor that extends between a floating drilling vessel and an underwater wellhead is provided with buoyancy means in the form of small-diameter, stiff-walled fluidtight tubes arranged around the outer wall of the marine riser.

REFERENCES:
patent: 3090976 (1963-05-01), Liu
patent: 3117596 (1964-11-01), Kahn
patent: 3178736 (1965-04-01), Gross
patent: 3272910 (1966-09-01), Flint
patent: 3354951 (1967-11-01), Savage et al.
patent: 3729756 (1973-05-01), Cook et al.
patent: 3803651 (1974-04-01), Moore
patent: 3835890 (1974-09-01), Miceli

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