Fluid riser between seabed and floating vessel

Details Fluid riser between seabed and floating vessel Fluid riser between seabed and floating vessel

E - Fixed Constructions

21

B

E21B 17/01 (2006.01) E21B 17/22 (2006.01)

Patent

CA 2182891

An ocean riser assembly (30) for con- veying fluids between the seabed and the sur- face of the sea includes a fluid conveying pipe (31) formed into a helical configuration or into a planar cyclically undulating configu- ration, such as a sinusoid, that extends lon- gitudinally from the bottom of the sea to the surface. One or more flexible and preferably elastic tension members (38) extend in the longitudinal direction of the riser assembly and are secured to the pipe at spaced intervals, so that they absorb tension forces applied be- tween the ends of the riser assembly (30). The helical or undulating configuration of the riser pipe decouples axial stresses in the pipe (31) caused by internal fluid pressure from stresses caused by external tension forces act- ing on the riser assembly (30), the external tension forces being converted to torque and bending moments acting on the pipe itself.

Système de colonne montante (30) sous-marine destinée à transférer des fluides entre le fond de l'océan et sa surface et comportant une conduite de transfert (31) de fluide hélicoïdale présentant une configuration hélicoïdale ou à ondulations planes cycliques (telle qu'une sinusoïde), s'étendant longitudinalement depuis le fond de l'océan et jusqu'à sa surface. Un ou plusieurs éléments tenseurs (38) souples, et de préférence élastiques, s'étendant dans le sens longitudinal du système de colonne montante sont fixés à la conduite, en des points espacés, de façon à absorber les forces de tension s'exerçant entre les extrémités du système (30). La configuration hélicoïdale ou ondulante de la colonne découple les tensions axiales dans la conduite (31) dues à la pression fluidique interne résultant des tensions causées par les efforts de tension externes agissant sur le système de colonne (31), ces derniers étant convertis en couple de torsion et de flexion agissant sur la conduite proprement dite.

Affiliated with

Also associated with

Rating

Fluid riser between seabed and floating vessel does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fluid riser between seabed and floating vessel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluid riser between seabed and floating vessel will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1403073