EP0142408A2 - Method of creating a modular system for floating constructions, especially for use in coastal regions - Google Patents

Method of creating a modular system for floating constructions, especially for use in coastal regions Download PDF

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Publication number
EP0142408A2
EP0142408A2 EP84402022A EP84402022A EP0142408A2 EP 0142408 A2 EP0142408 A2 EP 0142408A2 EP 84402022 A EP84402022 A EP 84402022A EP 84402022 A EP84402022 A EP 84402022A EP 0142408 A2 EP0142408 A2 EP 0142408A2
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EP
European Patent Office
Prior art keywords
cylinders
assembly
peripheral
cylinder
assembled
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EP84402022A
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German (de)
French (fr)
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EP0142408A3 (en
EP0142408B1 (en
Inventor
Hubert Berthet
Noel Laugier
Bernard Ricome
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IFP Energies Nouvelles IFPEN
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IFP Energies Nouvelles IFPEN
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B77/00—Transporting or installing offshore structures on site using buoyancy forces, e.g. using semi-submersible barges, ballasting the structure or transporting of oil-and-gas platforms

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  • the present invention relates to a new method of producing a modular system intended for use offshore, this system comprising a group consisting of several cylinders.
  • the present invention provides a method for producing a modular system which can be used in particular offshore, this system comprising a group of cylinders rigidly connected to each other, this group comprises at least one central cylinder and a plurality of peripheral cylinders.
  • the assembly of said first peripheral cylinders can be carried out on at least one support cradle.
  • the assembly consisting of the first two cylinders can be launched by ripping with or without the use of a barge.
  • the main cylinder comprises several cylindrical elements, these can be assembled with one another directly to said first peripheral cylinders as well as possibly to said first peripheral cylinders.
  • the method according to the invention when it applies to the case of a main cylinder comprising equipment, may comprise the mounting of said equipment on the cylindrical elements of the main cylinder before assembling them together.
  • the method according to the invention may include the assembly of an annex cylinder to said two peripheral cylinders.
  • FIG. 1 represents a type of modular system, in this case a production platform, which can be assembled according to the method described in the present invention.
  • the reference 1 designates the platform as a whole. This comprises a main metallic flotation cylinder A 1 , adapted to occupy in service a vertical position, the bottom of this cylinder being located below the level 2 of the water. The upper part of cylinder A emerges in service above the water level and supports a bridge 3.
  • the main flotation cylinder A 1 is surrounded by at least one ring of peripheral metal cylinders A 2 , A 3 ... which descend below the cylinder A 1 . This provision clears under the flotation cylinder A free space E limited by the peripheral cylinder crown A 2 , A 3 ...
  • this free space E can be used to place therein members such as an annex cylinder 4, making it possible to increase the rigidity of the system and / or to accommodate any ballast therein.
  • FIG. 1 shows the start of assembly operations.
  • FIG. 2 represents a peripheral cylinder A 4 comprising two elements 5 and 6 which are placed on cradles 7 and assembled together, in particular, by welding.
  • the reference 8 designates a quay and the reference 9 a basin.
  • FIG. 2 represents two first peripheral cylinders A 4 and A 5 which are assembled together and placed on a cradle 10. This cradle is possibly placed on sliding or rolling elements which will facilitate, when the time comes, setting water from part of the system.
  • the main cylinder A 1 is assembled with these first two cylinders A 4 and A 5 .
  • This operation can be carried out by placing the cylinder A 1 directly on the peripheral cylinders A and A 4 or by progressively assembling the different elements B 1 , B 2 , B 3 ... B n which constitute this main cylinder A l , as well as this is shown in Figures 5 and 6.
  • FIGS. 4A, 4B and 4C show an advantageous method of assembling the main cylinder A 1 .
  • the subassembly thus formed B 3 , B4 and 13 is transported by a crane 14 and is assembled with the first peripheral cylinders A and A and with the part already in place of the main cylinder B 1 , B 2 .
  • the different cylinders can be assembled together by means of connecting members 15 which may be weldable.
  • the ring of peripheral cylinders A 2 , A 3 ... is rigidly fixed by welding to the main cylinder.
  • Figure 7 shows the assembly consisting of the first two peripheral cylinders A 4 and A 5 and the main cylinder A 1 .
  • This assembly can be equipped with a reinforcing member, such as an auxiliary cylinder 16, serving to stiffen the final structure.
  • a reinforcing member such as an auxiliary cylinder 16
  • Ramps 17 are put in place, they connect the platform 8 to a barge 18 (Figs. 7 and 8).
  • the cradle 10 supporting the assembly A 1 , A 4 , A5 is moved, possibly by ripping, to be placed on the barge 18.
  • Peripheral cylinders A 3 and A 6 can be assembled to the assembly consisting of the first two peripheral cylinders A 4 and A5 and of the main cylinder A 1 , so as to provide better stability in water to the new assembly thus constituted (FIG. . 10)
  • the barge can be turned 180 ° to allow the establishment of these peripheral cylinders.
  • the barge 18 is then tilted or possibly submerged by ballasting or ballasting in order to allow the launching of the new assembly A 1 , A 3 , A 49 A 5 , A (Fi g . 11).
  • the barge is tilted laterally. It is obvious that said tilting can be effected in another direction, in particular longitudinally.
  • this system can advantageously be carried out by towing the group of cylinders (Fig. 2) and the bridge floated separately, for example by barges.
  • the group of cylinders is tilted to the vertical position and the connection to the site is then made between the bridge remaining horizontal and the cylinder assembly in the vertical position.
  • This connection can be made by ballasting certain cylinders by placing the bridge vertically on the main cylinder, then by deballasting these cylinders.

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  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Transportation (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Revetment (AREA)
  • Earth Drilling (AREA)
  • Prostheses (AREA)
  • Biological Depolymerization Polymers (AREA)
  • Bridges Or Land Bridges (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Hydroponics (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Toys (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

La présente invention concerne un procédé de réalisation d'un système modulaire utilisable notamment au large des côtes, ce système comportant un groupe de cylindres (A,, A2, A3...) reliés entre eux de manière rigide, ce groupe comprenant au moins un cylindre central (A,) et une pluralité de cylindres périphériques (A2, A3...).The present invention relates to a method for producing a modular system which can be used in particular offshore, this system comprising a group of cylinders (A ,, A 2 , A 3 ...) rigidly connected together, this group comprising at least one central cylinder (A,) and a plurality of peripheral cylinders (A 2 , A 3 ...).

- Ce procédé comporte les étapes successives suivantes:

  • on assemble entre eux à quai (8), au moins deux premiers cylindres périphériques (A4 et As),
  • on assemble le cylindre central (A,) à ces deux cylindres périphériques (P4 et A5),
  • on met à l'eau l'ensemble constitué par ledit cylindre central (A,) et lesdits premiers cylindres périphériques (A4, et As) et,
  • ledit ensemble étant mis à l'eau, on effectue l'assemblage des cylindres périphériques (A2, A7, P8...) restant audit ensemble (A1, A4, As).
- This process includes the following successive steps:
  • at least two first peripheral cylinders (A 4 and A s ) are assembled together at quay (8),
  • the central cylinder (A,) is assembled with these two peripheral cylinders (P 4 and A 5 ),
  • the assembly consisting of said central cylinder (A,) and said first peripheral cylinders (A 4 , and A s ) is put into the water and,
  • said assembly being put into the water, the peripheral cylinders (A 2 , A 7 , P 8, etc.) are assembled remaining in said assembly (A 1 , A 4 , A s ).

- L'invention peut être avantageusement utilisée pour la réalisation d'une plateforme de production de pétrole au large des côtes.

Figure imgaf001
- The invention can be advantageously used for the production of an oil production platform off the coast.
Figure imgaf001

Description

La présente invention concerne un nouveau procédé de réalisation d'un système modulaire destiné à être utilisé au large des côtes, ce système comportant un groupe constitué de plusieurs cylindres.The present invention relates to a new method of producing a modular system intended for use offshore, this system comprising a group consisting of several cylinders.

Un tel système peut être notamment utilisé pour la production, le stockage et le chargement d'hydrocarbures au large des côtes. Un système modulaire de ce type est décrit dans la demande de brevet français EN. 83/06.715 déposée le 21 avril 1983. L'art antérieur peut être illustré par les brevets américains US-A-3.080.583 et US-A-4.234.270.Such a system can be used in particular for the production, storage and loading of hydrocarbons off the coast. A modular system of this type is described in the French patent application EN. 83 / 06.715 filed April 21, 1983. The prior art can be illustrated by American patents US-A-3,080,583 and US-A-4,234,270.

La présente invention fournit un procédé de réalisation d'un système modulaire utilisable notamment au large des côtes, ce système comportant un groupe de cylindres reliés entre-eux de manière rigide, ce groupe comprend au moins un cylindre central et une pluralité de cylindres périphériques.The present invention provides a method for producing a modular system which can be used in particular offshore, this system comprising a group of cylinders rigidly connected to each other, this group comprises at least one central cylinder and a plurality of peripheral cylinders.

Le procédé selon l'invention est caractérisé par les étapes suivantes :

  • a) on assemble entre eux à quai au moins deux premiers cylindres périphériques, ,
  • b) on assemble le cylindre central à ces deux cylindres périphériques,
  • c) on met à l'eau l'ensemble constitué par ledit cylindre central et au moins lesdits premiers cylindres périphériques,
  • d) ledit ensemble étant mis à l'eau, on effectue l'assemblage des cylindres périphériques éventuellement restant et dudit ensemble.
The method according to the invention is characterized by the following steps:
  • a) at least two first peripheral cylinders are assembled together at the quay,,
  • b) the central cylinder is assembled with these two peripheral cylinders,
  • c) the assembly consisting of said central cylinder and at least said first peripheral cylinders is put into the water,
  • d) said assembly being launched, assembly of the possibly remaining peripheral cylinders and said assembly is carried out.

L'assemblage desdits premiers cylindres périphériques peut être effectué sur au moins un berceau support.The assembly of said first peripheral cylinders can be carried out on at least one support cradle.

L'ensemble constitué des deux premiers cylindres peut être mis à l'eau par rippage avec ou sans l'utilisation d'une barge.The assembly consisting of the first two cylinders can be launched by ripping with or without the use of a barge.

Selon l'invention, il est possible de réaliser l'un au moins des cylindres par l'assemblage de plusieurs éléments, ces éléments étant assemblés entre-eux à quai.According to the invention, it is possible to produce at least one of the cylinders by assembling several elements, these elements being assembled together at the quay.

Lorsque le cylindre principal comporte plusieurs éléments cylindriques ceux-ci peuvent être assemblés les uns aux autres directement auxdits premiers cylindres périphériques ainsi qu'éventuellement auxdits premiers cylindres périphériques.When the main cylinder comprises several cylindrical elements, these can be assembled with one another directly to said first peripheral cylinders as well as possibly to said first peripheral cylinders.

Le procédé selon l'invention,lorsqu'il s'applique au cas d'un cylindre principal comportant des équipements,peut comporter le montage desdits équipements sur les éléments cylindriques du cylindre principal avant de les assembler entre eux.The method according to the invention, when it applies to the case of a main cylinder comprising equipment, may comprise the mounting of said equipment on the cylindrical elements of the main cylinder before assembling them together.

Il est possible,selon l'invention,d'assembler au moins un troisième cylindre périphérique à l'ensemble constitué des deux premiers cylindres périphériques et du cylindre principal avant la mise à l'eau de cet ensemble.It is possible, according to the invention, to assemble at least a third peripheral cylinder to the assembly consisting of the first two peripheral cylinders and the main cylinder before the launching of this assembly.

Dans le cas où les cylindres périphériques sont assemblés au cylindre principal suivant les génératrices et où les cylindres périphériques se prolongent au delà de l'une des extrémité du cylindre principal, le procédé selon l'invention peut comporter l'assemblage d'un cylindre annexe auxdits deux cylindres périphériques.In the case where the peripheral cylinders are assembled to the main cylinder along the generators and where the peripheral cylinders extend beyond one of the ends of the main cylinder, the method according to the invention may include the assembly of an annex cylinder to said two peripheral cylinders.

La présente invention sera mieux comprise et ses avantages apparaîtront plus clairement à la description d'un exemple particulier illustré par les figures ci-jointes parmi lesquelles :

  • - la figure 1 représente une vue d'ensemble d'une plateforme comportant des cylindres,
  • - la figure 2 illustre la fabrication d'un cylindre périphérique,
  • - la figure 3 montre l'assemblage de deux cylindres périphériques,
  • - les figures 4A, 4B et 4C montrent l'assemblage d'éléments du cylindre central Al,
  • - les figures 5 et 6 illustrent la mise en place du cylindre central,
  • - les figures 7 à 10 montrent la mise en place d'une partie du système sur une barge,
  • - la figure 11 illustre le basculement de la barge et la mise à l'eau d'une partie du système, et
  • - la figure 12 montre l'assemblage des cylindres périphériques restant.
The present invention will be better understood and its advantages will appear more clearly on description of a particular example illustrated. by the attached figures among which:
  • FIG. 1 represents an overall view of a platform comprising cylinders,
  • FIG. 2 illustrates the manufacture of a peripheral cylinder,
  • - Figure 3 shows the assembly of two peripheral cylinders,
  • FIGS. 4A, 4B and 4C show the assembly of elements of the central cylinder Al,
  • - Figures 5 and 6 illustrate the positioning of the central cylinder,
  • - Figures 7 to 10 show the installation of part of the system on a barge,
  • FIG. 11 illustrates the tilting of the barge and the launching of part of the system, and
  • - Figure 12 shows the assembly of the remaining peripheral cylinders.

La figure 1 représente un type de système modulaire, en l'occurence une plateforme de production, que l'on peut assembler suivant le procédé décrit dans la présente invention.FIG. 1 represents a type of modular system, in this case a production platform, which can be assembled according to the method described in the present invention.

La référence 1 désigne la plateforme dans son ensemble. Celle-ci comprend un cylindre métallique principal de flottaison A1, adapté à occuper en service une position verticale, le bas de ce cylindre étant situé au-dessous du niveau 2 de l'eau. La partie supérieure du cylindre A émerge en service au-dessus du niveau de l'eau et supporte un pont 3.The reference 1 designates the platform as a whole. This comprises a main metallic flotation cylinder A 1 , adapted to occupy in service a vertical position, the bottom of this cylinder being located below the level 2 of the water. The upper part of cylinder A emerges in service above the water level and supports a bridge 3.

Le cylindre principal de flottaison A1 est entouré d'au moins une couronne de cylindres métalliques périphériques A2, A3 ... qui descendent au-dessous du cylindre A1. Cette disposition dégage sous le cylindre de flottaison A un espace libre E limité par la couronne de cylindre périphérique A2, A 3 ...The main flotation cylinder A 1 is surrounded by at least one ring of peripheral metal cylinders A 2 , A 3 ... which descend below the cylinder A 1 . This provision clears under the flotation cylinder A free space E limited by the peripheral cylinder crown A 2 , A 3 ...

Eventuellement, cet espace libre E, pourra être utilisé pour y placer des organes tels un cylindre annexe 4, permettant d'augmenter la rigidité du système et/ou pour y loger un lest quelconque.Optionally, this free space E can be used to place therein members such as an annex cylinder 4, making it possible to increase the rigidity of the system and / or to accommodate any ballast therein.

La figure 2 représente le début des opérations d'assemblage.Figure 2 shows the start of assembly operations.

La figure 2 représente un cylindre périphérique A4 comportant deux éléments 5 et 6 qui sont placés sur des berceaux 7 et assemblés entre eux, notamment, par soudage.FIG. 2 represents a peripheral cylinder A 4 comprising two elements 5 and 6 which are placed on cradles 7 and assembled together, in particular, by welding.

La référence 8 désigne un quai et la référence 9 un bassin.The reference 8 designates a quay and the reference 9 a basin.

La figure 2 représente deux premiers cylindres périphériques A4 et A5 qui sont assemblés entre eux et posés sur un berceau 10. Ce berceau est posé éventuellement sur des élémentsll de glissement ou de roulement qui faciliteront, le moment venu, la mise à l'eau d'une partie du système.FIG. 2 represents two first peripheral cylinders A 4 and A 5 which are assembled together and placed on a cradle 10. This cradle is possibly placed on sliding or rolling elements which will facilitate, when the time comes, setting water from part of the system.

Le cylindre principal A1 est assemblé à ces deux premiers cylindres A 4 et A5.The main cylinder A 1 is assembled with these first two cylinders A 4 and A 5 .

Cette opération peut être effectuée en plaçant directement le cylindre A1 sur les cylindres périphériques A et A4 ou en assemblant progressivement les différents éléments B1, B2, B3 ... Bn qui constituent ce cylindre principal Al,ainsi que le montrent les figures 5 et 6.This operation can be carried out by placing the cylinder A 1 directly on the peripheral cylinders A and A 4 or by progressively assembling the different elements B 1 , B 2 , B 3 ... B n which constitute this main cylinder A l , as well as this is shown in Figures 5 and 6.

Les figures 4A, 4B et 4C montrent un mode avantageux d'assemblage du cylindre principal A1.FIGS. 4A, 4B and 4C show an advantageous method of assembling the main cylinder A 1 .

Certains des éléments B3 et B4 sont assemblés horizontalement (Fig. 4B) l'élément B comportant un fond 12, puis, si nécessaire, des équipements 13 sont mis en place dans les éléments B3 et B4.Some of the elements B 3 and B 4 are assembled horizontally (FIG. 4B) the element B comprising a bottom 12, then, if necessary, equipment 13 is put in place in the elements B 3 and B 4 .

Le sous-ensemble ainsi constitué B3, B4 et 13 est transporté par une grue 14 et est assemblé aux premiers cylindres périphériques A et A et à la partie déjà en place du cylindre principal B1, B2.The subassembly thus formed B 3 , B4 and 13 is transported by a crane 14 and is assembled with the first peripheral cylinders A and A and with the part already in place of the main cylinder B 1 , B 2 .

Les différents cylindres peuvent être assemblés entre-eux grâce à des organes de liaison 15 éventuellement soudables.The different cylinders can be assembled together by means of connecting members 15 which may be weldable.

Selon un mode particulier de réalisation, la couronne de cylindres périphériques A2, A3... est fixée de manière rigide par soudure au cylindre principal.According to a particular embodiment, the ring of peripheral cylinders A 2 , A 3 ... is rigidly fixed by welding to the main cylinder.

Afin de faciliter la construction d'un tel système modulaire, il sera avantageux d'incorporer à la virole 1 de chaque cylindre A1, A2, A3... un organe de liaison 15 lors de la fabrication de cette virole, l'assemblage de deux cylindres voisins étant alors réalisé par soudure entre les organes de liaison 15 dont sont équipés ces cylindres.In order to facilitate the construction of such a modular system, it will be advantageous to incorporate into the shell 1 of each cylinder A 1 , A 2 , A 3 ... a connecting member 15 during the manufacture of this shell, l 'assembly of two neighboring cylinders then being produced by welding between the connecting members 15 with which these cylinders are fitted.

La figure 7 montre l'ensemble constitué des deux premiers cylindres périphériques A4 et A5 et du cylindre principal A1.Figure 7 shows the assembly consisting of the first two peripheral cylinders A 4 and A 5 and the main cylinder A 1 .

Cet ensemble peut être équipé d'un organe de renfort,tel un cylindre annexe 16,servant à rigidifier la structure finale.This assembly can be equipped with a reinforcing member, such as an auxiliary cylinder 16, serving to stiffen the final structure.

Des rampes 17 sont mises en place, elles relient le quai 8 à une barge 18 (Fig. 7 et 8).Ramps 17 are put in place, they connect the platform 8 to a barge 18 (Figs. 7 and 8).

Le berceau 10 supportant l'ensemble A1, A4, A5 est déplacé, éventuellement par rippage, pour être placé sur la barge 18.The cradle 10 supporting the assembly A 1 , A 4 , A5 is moved, possibly by ripping, to be placed on the barge 18.

Des cylindres périphériques A3 et A6 peuvent être assemblés à l'ensemble constitué des deux premiers cylindres périphériques A4 et A5 et du cylindre principal A1, de manière à assurer une meilleure stabilité dans l'eau au nouvel ensemble ainsi constitué (Fig. 10)Peripheral cylinders A 3 and A 6 can be assembled to the assembly consisting of the first two peripheral cylinders A 4 and A5 and of the main cylinder A 1 , so as to provide better stability in water to the new assembly thus constituted (FIG. . 10)

Ces cylindres A3 et A6 peuvent être mis en place,soit lorsque l'ensemble est encore à quai, soit lorsque l'ensemble est placé sur la barge 18 (Fig. 9).These cylinders A 3 and A 6 can be put in place, either when the assembly is still docked, or when the assembly is placed on the barge 18 (FIG. 9).

Dans ce dernier cas, la barge pourra être tournée de 180° pour permettre la mise en place de ces cylindres périphériques.In the latter case, the barge can be turned 180 ° to allow the establishment of these peripheral cylinders.

La barge 18 est ensuite basculée ou immergée éventuellement par lestage ou balastage afin de permettre la mise à l'eau du nouvel ensemble A1, A3, A49 A5, A (Fig. 11). Sur la figure 11, le basculement de la barge se fait latéralement. Il est bien évident que ledit basculement pourra être effectué dans une autre direction, notamment longitudinalement.The barge 18 is then tilted or possibly submerged by ballasting or ballasting in order to allow the launching of the new assembly A 1 , A 3 , A 49 A 5 , A (Fi g . 11). In FIG. 11, the barge is tilted laterally. It is obvious that said tilting can be effected in another direction, in particular longitudinally.

L'assemblage des cylindres périphériques A2, A7... se poursuit alors que l'ensemble est dans l'eau.The assembly of the peripheral cylinders A 2 , A 7 ... continues while the assembly is in the water.

Bien entendu, cette opération d'assemblage dans l'eau n'a pas lieu si tous les cylindres périphériques ont été assemblés à quai ou sur la barge.Of course, this assembly operation in water does not take place if all the peripheral cylinders have been assembled on the quay or on the barge.

On ne sortira pas du cadre de la présente invention en effectuant la mise à l'eau d'une partie du système sans utiliser de barge, comme cela se fait d'ailleurs pour le lancement des navires.It will not depart from the scope of the present invention to effect the launching of part of the system without using a barge, as is done for the launching of ships.

La mise en place de ce système sur le site choisi pourra avantageusement être réalisé en remorquant séparément le groupe de cylindres (Fig. 2) et le pont mis en flottaison, par exemple grâce à des barges. Par ballastage de certains cylindres, le groupe des cylindres est basculé en position verticale et le raccordement sur le site est alors effectué entre le pont demeurant horisontal et l'ensemble de cylindres en position verticale.The installation of this system on the chosen site can advantageously be carried out by towing the group of cylinders (Fig. 2) and the bridge floated separately, for example by barges. By ballasting certain cylinders, the group of cylinders is tilted to the vertical position and the connection to the site is then made between the bridge remaining horizontal and the cylinder assembly in the vertical position.

Ce raccordement peut se faire par ballastage de certains cylindres par la mise du pont à la verticale du cylindre principal, puis par déballastage de ces cylindres.This connection can be made by ballasting certain cylinders by placing the bridge vertically on the main cylinder, then by deballasting these cylinders.

Claims (8)

1.- Procédé de réalisation d'un système modulaire utilisable notamment au large des côtes, ce système comportant un groupe de cylindres (A1, A2, A3...) reliés entre eux de manière rigide, ce groupe comprenant au moins un cylindre central (A1) et une pluralité de cylindres périphériques (A2, A ,..), caractérisé par les étapes successives suivantes : a) on assemble entre eux à quai (8), au moins deux premiers cylindres périphériques (A4 et A5), b) on assemble le cylindre central (A1) à ces deux cylindres périphériques (A4 et A5), c) on met à l'eau l'ensemble constitué par ledit cylindre central au moins (A1) et/lesdits premiers cylindres périphériques (A et A5) et, d) ledit ensemble étant mis à l'eau, on effectue l'assemblage des cylindres périphériques (A2, A7, A8,...) éventuellement restant audit ensemble (A1, A4, A5). 1.- Method for producing a modular system which can be used in particular offshore, this system comprising a group of cylinders (A 1 , A 2 , A 3, etc.) rigidly connected together, this group comprising at least a central cylinder (A 1 ) and a plurality of peripheral cylinders (A 2 , A, ..), characterized by the following successive stages: a) at least two first peripheral cylinders (A 4 and A 5 ) are assembled together at quay (8), b) the central cylinder (A 1 ) is assembled with these two peripheral cylinders (A 4 and A5), c) the assembly consisting of at least said central cylinder (A 1 ) and / said first peripheral cylinders (A and A 5 ) is put into the water and, d) said assembly being put into the water, the peripheral cylinders are assembled (A 2 , A 7 , A 8 , etc.) possibly remaining in said assembly (A 1 , A 4 , A5). 2. - Procédé selon la revendication 1, caractérisé en ce qu'on effectue l'assemblage desdits deux cylindres périqhériques (A4 et A5) sur au moins un berceau (10) support.2. - Method according to claim 1, characterized in that the assembly of said two peri-peripheral cylinders (A 4 and A 5 ) is carried out on at least one cradle (10) support. 3. - Procédé selon la revendication 1, caractérisé en ce qu'on met à l'eau ledit ensemble (A1, A4, A5) par rippage avec ou sans l'utilisation d'une barge (18).3. - Method according to claim 1, characterized in that said assembly is put into the water (A 1 , A 4 , A5) by ripping with or without the use of a barge (18). 4. - Procédé selon la revendication 1, caractérisé en ce qu'on réalise l'un au moins des cylindres (A1, A2, A3 ...) par l'assemblage de plusieurs éléments, ces éléments étant assemblés entre eux à quai (9).4. - Method according to claim 1, characterized in that one carries out at least one of the cylinders (A 1 , A 2 , A 3 ...) by the assembly of several elements, these elements being assembled together at the quay (9). 5. - Procédé selon la revendication 1, caractérisé en ce que le cylindre principal (A1) est composé de plusieurs éléments cylindriques (B , B2...) que l'on assemble les uns aux autres directement sur lesdits deux cylindres périphériques (A4, A5).5. - Method according to claim 1, characterized in that the main cylinder (A 1 ) is composed of several cylindrical elements (B, B 2 ...) which are assembled to each other directly on said two peripheral cylinders (A 4 , A 5 ). 6. - Procédé selon la revendication 5 appliqué au cas où le cylindre principal (A1) doit comporter des équipements, caractérisé en ce que l'on monte lesdits équipements (13) sur les éléments cylindriques (B3, B4) du cylindre principal avant de les assembler entre eux.6. - Method according to claim 5 applied in the case where the main cylinder (A 1 ) must include equipment, characterized in that said equipment (13) is mounted on the cylindrical elements (B 3 , B 4 ) of the cylinder main before assembling them together. 7. - Procédé selon la revendication 1, caractérisé en ce qu'on assemble au moins un troisième cylindre périphérique (A3 et/ou A6...) au dit ensemble avant sa mise à l'eau.7. - Method according to claim 1, characterized in that at least a third peripheral cylinder is assembled (A 3 and / or A 6 ...) to said assembly before being put in the water. 8. - Procédé selon la revendication 1 appliqué au cas où les cylindres périphériques sont assemblés au cylindre principal selon des génératrices et où les cylindres périphériques se prolongent au delà de l'une des extrémités du cylindre principal, caractérisé en ce que l'on assemble un cylindre annexe (4) auxdits deux cylindres périphériques.8. - Method according to claim 1 applied in the case where the peripheral cylinders are assembled to the main cylinder according to generatrices and where the peripheral cylinders extend beyond one of the ends of the main cylinder, characterized in that one assembles an annex cylinder (4) to said two peripheral cylinders.
EP84402022A 1983-10-17 1984-10-09 Method of creating a modular system for floating constructions, especially for use in coastal regions Expired EP0142408B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8316482 1983-10-17
FR8316482A FR2553371B1 (en) 1983-10-17 1983-10-17 PROCESS FOR PRODUCING A MODULAR SYSTEM THAT CAN BE USED ESPECIALLY OFF THE SIDES

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EP0142408A2 true EP0142408A2 (en) 1985-05-22
EP0142408A3 EP0142408A3 (en) 1985-06-26
EP0142408B1 EP0142408B1 (en) 1988-01-20

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US (1) US4630968A (en)
EP (1) EP0142408B1 (en)
JP (1) JPS60107493A (en)
AR (1) AR245660A1 (en)
AU (1) AU570735B2 (en)
BR (1) BR8405331A (en)
CA (1) CA1249183A (en)
ES (1) ES536792A0 (en)
FR (1) FR2553371B1 (en)
IN (1) IN162479B (en)
NO (1) NO164404C (en)
OA (1) OA07837A (en)

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US6309141B1 (en) 1997-12-23 2001-10-30 Shell Oil Company Gap spar with ducking risers
US20030140838A1 (en) 2002-01-29 2003-07-31 Horton Edward E. Cellular SPAR apparatus and method
US8783198B2 (en) 2009-02-04 2014-07-22 Technip France Spar hull belly strake design and installation method
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US4630968A (en) 1986-12-23
NO164404B (en) 1990-06-25
ES8603327A1 (en) 1985-12-16
AU570735B2 (en) 1988-03-24
FR2553371B1 (en) 1986-01-17
CA1249183A (en) 1989-01-24
NO164404C (en) 1990-10-03
JPS60107493A (en) 1985-06-12
FR2553371A1 (en) 1985-04-19
EP0142408A3 (en) 1985-06-26
JPH0549520B2 (en) 1993-07-26
ES536792A0 (en) 1985-12-16
AU3427284A (en) 1985-04-26
IN162479B (en) 1988-05-28
OA07837A (en) 1986-11-20
AR245660A1 (en) 1994-02-28
EP0142408B1 (en) 1988-01-20
BR8405331A (en) 1985-09-03
NO844107L (en) 1985-04-18

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