摘要:
La présente invention concerne un dispositif d'installation et d'ancrage (1a) d'une embase (2) destinée à être ancrée sur une paroi (1b) au fond de la mer, caractérisé en ce qu'il comprend une structure support supérieure (4) dessous laquelle ladite embase (2) est solidarisée, ladite embase comprenant des premiers orifices cylindriques (11), ladite supérieure structure (4) supportant des boulons d'ancrage (5) aptes à être entraînés en coulissement et en rotation à travers lesdits premiers orifices (11), lesdits boulons comprenant des premiers moyens de coupe (9) aptes à percer des seconds orifices circulaires dans ladite paroi (1b), et des premiers moyens de blocage automatique (7, 10b) comprenant des écrous (7) et des premiers moyens de retenue automatique (10b), chaque dit boulon comprenant une zone filetée apte à coopérer avec chaque dit écrou (7), de sorte que le vissage dudit boulon provoque alors l'ancrage de ladite embase sur la paroi par serrage de celle-ci entre ledit écrou fixe (7) et lesdits premiers moyens de retenue automatique (10b).
摘要:
The invention concerns a thermal insulation device for at least one submarine pipeline (1) comprising: a heat-insulating coating (31-33) enclosing said pipeline(s), said coating being covered with a protective watertight outer casing (2) and said casing (2) being made of a flexible or semirigid material adapted to remain in contact with the outer surface of said insulating coating (3) when the latter is deformed. The invention is characterized in that said insulting coating comprises a phase-change material (31) confined in at least one jacket (32) made of a flexible or semirigid deformable material (32), said jacket(s) being arranged around said pipeline(s) (1).
摘要:
La présente invention concerne un procédé de récupération d'effluents polluants (1) plus légers que l'eau, contenus dans une cuve (6) d'un navire coulé et/ou endommagé reposant au fond de la mer (7) dans lequel :
1- on descend ledit réservoir navette (2), depuis la surface (11) jusqu'au fond de la mer (7), dans sa dite position ramassée (2A) et on fait coopérer ledit orifice inférieur (5 1 ) du réservoir navette (2) avec ledit dispositif d'évacuation (6 1 -6 3 ), et 2- on remplit ledit réservoir navette (2) d'effluents (1), et 3- on laisse ledit réservoir navette (2) remonter naturellement à la surface, une fois rempli, en configuration déployée (2B).
摘要:
The invention relates to a bed to surface connection for an underwater pipeline (11), resting on the seabed, in particular at great depth, of the hybrid tower type, comprising a static base (151-152) resting on the bed. According to the invention said pipeline (11), resting on the seabed is connected by means of a flexible pipeline element (12) with an elbow bend, to a vertical riser (5), the bottom end of which is fixed with relation to said base.
摘要:
The invention concerns a seafloor-surface connecting installation for a submarine pipeline (10) set on the seafloor, in particular at great depth, of the hybrid-tower type comprising a static base (13-18) set on the seabed. In the inventive installation: 1) said vertical riser includes a terminal pipe portion (51), and a flexible joint (19) which allows angular movements (α) of the upper part (52) relative to said terminal pipe portion (51); and 2) the terminal part (11) of said pipe resting on the seabed has a an elbow-type terminal curvature; 3) said terminal portion (51) of the vertical riser is connected to said terminal curvature (11) by a single connecting element; and 4) said base plate (13-18) rigidly maintains in fixed vertical position and linked to each other via said connecting element (12): said terminal pipe portion (51) and said elbow-type terminal curvature (12) the latter facing upwards.
摘要:
The invention relates to a method for monitoring the mechanical behaviour of an subsea pipe (2) carrying pressurised fluids and produced by assembling unitary pipe elements (4), the method comprising a mechanical calibration step that consists in using a measuring cable provided with an optical fibre sensor to measure the deformations in each unitary pipe element when subjected, while ashore, to different mechanical stresses of predetermined directions and intensities, and, on the basis of these measurements, establishing the mechanical signature of each unitary pipe element; and a monitoring step consisting in using a measuring cable (18) provided with a fibre optic sensor using Brillouin backscattering and positioned in the shape of a helix with a constant pitch (p) on each unitary pipe element, the direction of the pitch of the helix alternating in two adjacent unitary pipe elements, to recover the variations of the optical signal injected in the sensors when the pipe is in service, and, from the variations of the signal and the mechanical signature of each unitary pipe element, determining the stresses that each unitary pipe element is subjected to.