Method and apparatus for connecting drilling riser strings...

E - Fixed Constructions – 21 – B

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Details

E21B 17/01 (2006.01) E21B 33/038 (2006.01) F16L 23/024 (2006.01) F16L 23/032 (2006.01)

Patent

CA 2685561

In one embodiment, the present invention relates to a riser apparatus for use in offshore drilling for oil or other fossil fuels, the riser apparatus comprising: a plurality of riser sections coupled serially end-to-end, wherein each of the riser sections comprises: a tube having a first end and a second end; a first flanged that is mechanically joined to the first end of the tube; a second flanged that is mechanically joined to the second end of the tube; wherein the tube is constructed of an aluminum alloy; and wherein the flanges are constructed of the aluminum alloy; and wherein the riser apparatus has a length of approximately 1,500 meters or greater.

Dans un mode de réalisation, la présente invention concerne un dispositif de colonnes montantes destiné à être utilisé dans la recherche de pétrole ou autres combustibles fossiles par forage en mer. Ledit dispositif de colonnes montantes comprend une pluralité de sections de colonne montante couplées en série bout à bout, chacune des sections de colonne montante comprenant un tube ayant une première extrémité et une seconde extrémité, une première extrémité de raccordement à bride qui est mécaniquement unie à la première extrémité du tube, et une seconde extrémité de raccordement à bride qui est mécaniquement unie à la seconde extrémité du tube. Ledit tube est construit en alliage d'aluminium, les brides sont construites en alliage d'aluminium, et le dispositif de colonnes montantes a une longueur d'approximativement 1500 mètres ou plus.

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