Disconnectable production riser assembly

Details Disconnectable production riser assembly Disconnectable production riser assembly

1981-04-20

1983-08-09

Purser, Ernest R.

Wells

Submerged well

Connection or disconnection of submerged members remotely...

166346, 166364, 175 7, E21B 33035

Patent

active

043973574

ABSTRACT:
A production riser assembly for producing oil to a floating platform includes a central riser (22) and a plurality of production risers (34) annularly spaced around the central riser. The central riser has a flexible joint (26) with a hydraulic connector (82) therebelow. Each production riser has a flexible hose (47) at its lower end which is connectable to flowline subs (46) located in spaced relation from the central riser connector. Hydraulically operated connectors (45) are located at the bottom end of each flexible pipe, and each riser is independently tensioned.

REFERENCES:
patent: 3189098 (1965-06-01), Haeber
patent: 3280908 (1966-10-01), Todd
patent: 3324943 (1967-06-01), Price
patent: 3347312 (1967-10-01), Neilson
patent: 4169507 (1979-10-01), Szymczak
"Early Subsea Production System" by B. H. von Bilderbeek, The Apea-Journal, 1977.

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