Hydraulic and earth engineering – Marine structure or fabrication thereof
Patent
1984-02-07
1987-05-05
Corbin, David H.
Hydraulic and earth engineering
Marine structure or fabrication thereof
166341, 166359, 285315, E21B 712, F16L 3708
Patent
active
046627855
ABSTRACT:
There is disclosed a type of riser to connect subsea hydrocarbon production equipment to a floating storage, process or control facility which combines the advantages of integral and non-integral risers previously used. This is achieved by a locking mechanism which allows the individual tubes to be freed once each section of riser is added, and a subsea remotely operated connector that allows individual tubing to be released. Improvements in the design of collet connectors are also disclosed. There is also disclosed a guidelineless method of connecting risers or other equipment to subsea installations. The method uses a cone on the subsea equipment and a guideframe on the riser. The guideframe aligns itself with the subsea cone prior to the riser being connected. As the riser is drawn to the subsea mandrel the guideframe aligns the riser connector with the mandrel. A still further embodiment disclosed herein is a flexjoint consisting of a series of flexjoints in an outer case with a high pressure tube inside. Internal tubes are fixed at either end of the assembly to the outer case.
REFERENCES:
patent: 3339944 (1967-09-01), Poague
patent: 3339947 (1967-09-01), Maisey
patent: 4040264 (1977-08-01), Neilon
patent: 4188156 (1980-02-01), Fisher
patent: 4214842 (1980-07-01), Franks
patent: 4411317 (1983-10-01), Gieswein
Balik Karel
Gibb Peter R.
Corbin David H.
Novacorp International Consulting Ltd.
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