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EP1799539B1 - Appareil et procede pour amarrer une installation flottante - Google Patents

Appareil et procede pour amarrer une installation flottante Download PDF

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Publication number
EP1799539B1
EP1799539B1 EP05789345A EP05789345A EP1799539B1 EP 1799539 B1 EP1799539 B1 EP 1799539B1 EP 05789345 A EP05789345 A EP 05789345A EP 05789345 A EP05789345 A EP 05789345A EP 1799539 B1 EP1799539 B1 EP 1799539B1
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EP
European Patent Office
Prior art keywords
turret
chaintable
mooring
pulley
line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP05789345A
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German (de)
English (en)
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EP1799539A1 (fr
Inventor
Luca Canepa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saipem SpA
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Saipem SpA
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Publication date
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Publication of EP1799539A1 publication Critical patent/EP1799539A1/fr
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Publication of EP1799539B1 publication Critical patent/EP1799539B1/fr
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Expired - Lifetime legal-status Critical Current

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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 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
    • B63B21/507—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers with mooring turrets

Definitions

  • the present invention relates to an apparatus and method for mooring a floating vessel. More particularly, but not exclusively, the invention relates to a mooring apparatus and method of the turret mooring type for use with floating production units (“FPUs”) such as floating storage and offloading vessels (“FSOs”) and floating production storage and offloading vessels (“FPSOs").
  • FPUs floating production units
  • FSOs floating storage and offloading vessels
  • FPSOs floating production storage and offloading vessels
  • Floating units are utilised in the field of offshore production of oil and gas in deep water.
  • An FPSO is connected to an underwater well or wells by means of risers.
  • the risers are flexible or rigid pipes transporting hydrocarbons from the underwater well or wells to the FPSO.
  • the FPSO is able to store the oil and gas deceived, to separate the liquid and gas phases and to offload the liquid and gas to oil and gas tankers or pipelines routed to onshore storage sites.
  • Any floating unit must be secured to the sea bottom by mooring lines in order to keep the unit in position.
  • mooring lines Several mooring configurations are possible.
  • One mooring configuration is known as spread mooring and is illustrated schematically in Figure 1 .
  • Mooring lines 11 are connected to the vessel 13 at several points on the stern and bow of the vessel 13 and each mooring line 11 has its own winch for abandonment/recovery procedures.
  • the risers (not shown) are connected to the vessel, which is stationary relative to the sea bottom.
  • the disadvantage of spread mooring is that, since the vessel is fixed relative to the sea bottom, the mooring lines may be subject to extreme forces in strong winds and currents.
  • offloading operations can be difficult since the oil/gas tanker must be maintained stationary relative to the vessel throughout.
  • An alternative option for offloading is to route the oil/gas to a separate buoy via export lines. The oil/gas tanker can then offload from the buoy, weathervaining around the buoy as it does so.
  • FIG. 2 Another mooring configuration is known as turret mooring and is illustrated schematically in Figure 2 .
  • the vessel 21 is formed with a vertical shaft (turret 23) which is fixed relative to the sea bottom.
  • the vessel is allowed to rotate around the vertical axis formed by the turret 23 thereby adopting the most favourable position in light of external forces due to winds and currents.
  • the mooring lines 25 and risers (not shown) are attached to the turret 23.
  • the oil/gas tanker is subject to the same external forces as the floating vessel so the two vessels remain substantially stationary with respect to one another, thereby facilitating the offloading operations.
  • the turret shaft is made of two elements, the external part and the internal part.
  • the external part is part of the vessel and the internal part is fixed relative to the sea bottom (geostationary).
  • the two parts are rotatable, relative to one another, around the turret's vertical axis.
  • the lowest portion of the geostationary part is called the chaintable .
  • the chaintable is typically constructed with a number of vertical holes which are used for installation of the mooring lines and risers.
  • the risers pass through the chaintable, into the turret and are connected to a swivel stack located in the turret.
  • the swivel stack is part of the geostationary part of the turret but contains fluid swivel joints to allow flow continuity between the internal and external parts of the turret and hence the transfer of fluid from the risers to the vessel pipes and tanks.
  • NO01/17847 is considered to be the closest prior art, and describes a single hoisting mechanism positioned on a turret of either an external or an internal turret mooring system for an FSO or FPSO vessel.
  • the mechanism is mounted for angular rotation about the centre-line of the turret in order that the hoist can be angularly aligned with anchor leg chains or riser/umbilicals spaced around the turret.
  • All the mooring chains and risers need to be connectable to a winch for installation and also for abandonment/recovery.
  • the winch is located on the main deck of the vessel, in which case the wire path is somewhat restricted due to the relative rotation of the vessel and the turret.
  • the winch is installed in the upper part of the turret with the forces transmitted along a steel wire running down the vertical axis of the turret.
  • Figure 3 Such an arrangement is shown in Figure 3 .
  • Mooring chain 301 is installed by guide wire 303 transmitting force from winch system 305 in the upper part of the turret.
  • the guide wire 303 runs through at least two movable pulleys 307 which align the guide wire connected to the mooring chain to the working position of the winch (i.e. along the turret's vertical axis).
  • the pulleys are rotatable around the turret's vertical axis to install mooring chains/risers at different angular positions around the turret and are translatable in the radial direction to install mooring chains/risers at different radial positions on the turret.
  • At least two pulleys are required to convert the force at the winch system to a force in the same direction at the mooring chain/riser during installation/recovery or abandonment.
  • a turret for turret mooring a floating vessel the turret being rotatable with respect to the vessel about a turret axis, the turret comprising:
  • Chaintable is a well known term in the art of turret mooring and need not be described in any detail here.
  • the chaintable is typically in the form of a cylinder having a cross section which is substantially the same as that of the turret.
  • the chaintable is customarily positioned at the lower end of the turret which may be located either above or below the water line, but is usually above the water line but within the splash zone.
  • the chaintable is provided with a number of holes for the attachment of mooring lines and/or risers.
  • the whole arrangement of the turret may be simplified. For example, only one pulley is required on the beam, rather than two as in many prior art arrangements. Also, the mooring apparatus takes up less space than prior art arrangements, leaving, for example, room in the upper part of the turret for other applications.
  • a further advantage of the arrangement is that the pulley can be fixed on the beam, rather than being moveable along the beam as in prior art arrangements; this further simplifies the turret arrangement.
  • pilot line is described as being “connected” at a first end to the hauling device, the term “connected” is not intended to mean that the pilot line is permanently linked to the hauling device. Rather, it is intended that the pilot line is sufficiently coupled to the hauling device for the hauling device to be able to exert a force on the mooring line or riser via the pilot line.
  • pilot line is described as being “connected” at a second end to the mooring line or riser, the term “connected” is not intended to mean that pilot line is permanently linked to the mooring line or riser.
  • the pulley is fixed on the beam at the first distance from the turret axis such that the pulley is alignable with each one of the plurality of holes in the chaintable.
  • the beam may be rotated to a particular angular position such that the pulley is aligned with a selected one of the holes in the chaintable.
  • the pilot line aligns directly with the selected hole once it has passed around the pulley.
  • the pulley does not need to be moveable along the beam in the radial direction. In that case, preferably, the pilot line passes around only one pulley.
  • the beam need not necessarily be oblong in shape, but may be any shape capable of being rotated about the turret axis.
  • the beam is most conveniently elongate and substantially rectangular in plan view.
  • the chaintable comprises a second plurality of holes arranged at a second distance from the turret axis.
  • the beam preferably has a second pulley fixed thereon at the second distance from the turret axis such that the second pulley is alignable with each one of the second plurality of holes in the chaintable.
  • the beam in a similar way to the first plurality of holes in the chaintable, in use, the beam may be rotated to a particular angular position such that the second pulley is aligned with a selected one of the second plurality of holes in the chaintable. Because the distance of the second pulley from the turret axis is the same as the distance of the second plurality of holes from the turret axis, the pilot line aligns directly with the selected hole once it has passed around the second pulley.
  • at least two radial positions of holes in the chaintable are operable simply by providing two pulleys at different radial positions, each of which are fixed on the rotatable beam. Neither pulley need be moveable along the beam in the radial direction.
  • the second distance is greater than the first distance such that the second pulley is positioned towards the outside of the turret relative to the first pulley.
  • the pilot line when the pilot line is required to pass through one of the holes in the first plurality of holes, it passes around only the first pulley but when the pilot line is required to pass through one of the holes in the second plurality of holes (outside the first plurality of holes), it passes around both the first pulley and the second pulley.
  • the first plurality of holes may be spaced out around the turret axis. In that case, they may form a ring centred on the turret axis.
  • the second plurality of holes may be spaced out around the turret axis and may form a second ring also centred on the turret axis, i.e. concentric with the first ring of holes.
  • the holes in the two rings of holes may or may not be angularly aligned.
  • the holes in each ring of holes may or may not equi-angularly spaced.
  • the hauling device is a jack arranged to selectively draw in or feed out the pilot line.
  • the jack may comprise two clamps for clamping the pilot line, at least one of the clamps being moveable, such that the jack draws in or feeds out the pilot line step wise.
  • the jack may comprise two moveable clamps for clamping the pilot line, such that the jack draws in or feeds out the pilot line substantially continuously.
  • the hauling device is a winch.
  • the hauling device is located in the turret, substantially adjacent the chaintable. Locating the hauling device close to the chaintable allows other parts of the turret to be used for other applications.
  • the pilot line includes a connection device at its second end, for connecting to a mooring line or riser head.
  • a connection device may be of a type that is well known in the art.
  • the turret may further comprise a joint for connection of a mooring line.
  • the joint may be located on the chaintable itself or.on the outer periphery of the chaintable.
  • the joint is preferably angularly aligned with one of the holes in the chaintable.
  • the turret may further comprise a riser guide tube for connection of a riser.
  • the riser guide tube may be mounted on the chaintable.
  • a vessel comprising a turret as described above.
  • a vessel comprising a turret for turret mooring the vessels, the turret being rotatable with respect to the vessel about a substantially vertical axis, the turret comprising:
  • the whole arrangement of the turret may be simplified.
  • the term “connected” is not intended to mean that the pilot line is permanently linked to the hauling device. Rather, it is intended that the pilot line is sufficiently coupled to the hauling device for the hauling device to be able to exert a force on the mooring line or riser via the pilot line.
  • the pilot line is described as being “connected” at a second end to the mooring line or riser, the term “connected” is not intended to mean that the pilot line is permanently linked to the mooring line or riser.
  • the pulley is preferably fixed on the beam at the first distance from the turret axis such that the pulley is alignable above each one of the plurality of holes in the chaintable.
  • the beam may be rotated in a substantially horizontal plane to a particular angular position such that the pulley is aligned above a selected one of the holes in the chaintable.
  • the pilot line aligns directly above the selected hole once it has passed over the pulley.
  • the pulley does not need to be moveable along the beam in the radial direction.
  • the pilot line preferably passes over only one pulley.
  • the chaintable comprises a second plurality of holes arranged at a second distance from the turret axis.
  • the beam may have a second pulley fixed thereon at the second distance from the turret axis such that the second pulley is alignable above each one of the second plurality of holes in the chaintable.
  • the second pulley may be aligned above a selected one of the second plurality of holes in the chaintable. Because the distance of the second pulley from the turret axis is the same as the distance of the second plurality of holes from the turret axis, the pilot line aligns directly above the selected hole once it has passed over the second pulley. Thus, neither pulley need be moveable along the beam in the radial direction.
  • the beam need not necessarily be oblong in shape, but may be any shape capable of being rotated about the turret axis.
  • the beam is most conveniently elongate and substantially rectangular in plan view.
  • the hauling device is a jack arranged to selectively draw in or feed out the pilot line.
  • the jack may comprise two clamps for clamping the pilot line, at least one of the clamps being moveable, such that the jack draws in or feeds out the pilot line step wise.
  • the jack may comprise two moveable clamps for clamping the pilot line, such that the jack draws in or feeds out the pilot line substantially continuously.
  • the hauling device is a winch.
  • the hauling device is preferably located in the turret, substantially adjacent and above the chaintable. Locating the hauling device close to the chaintable (i.e. in the lower part of the turret) allows the upper part of the turret to be used for other applications. It also lowers the centre of mass of the turret, thereby providing extra stability.
  • the pilot line may include a connection device at its second end for connecting to a mooring line or riser head.
  • the turret may further comprise a joint for connection of a mooring line.
  • the joint may be located on the chaintable.
  • apparatus for mounting in a turret for turret mooring a floating vessel, the turret being rotatable with respect to the vessel about a substantially vertical axis, the apparatus comprising:
  • the mooring apparatus in the turret takes up considerably less space than prior art arrangements.
  • the apparatus further comprises the pilot line.
  • the pilot line may be arranged to be connected at one end to the hauling device, to pass over the pulley and to be connected at the other end to a mooring line or riser.
  • pilot line is described as being “connected” at a first end to the hauling device, the term “connected” is not intended to mean that the pilot line is permanently linked to the hauling device. Rather, it is intended that the pilot line is sufficiently coupled to the hauling device for the hauling device to be able to exert a force on the mooring line or riser via the pilot line.
  • pilot line is described as being “connected” at a second end to the mooring line or riser, the term “connected” is not intended to mean that the pilot line is permanently linked to the mooring line or riser.
  • the apparatus further comprises a second pulley mounted on the beam.
  • the beam need not necessarily be oblong in shape, but may be any shape capable of being rotated about the turret axis.
  • the beam is most conveniently elongate and substantially rectangular in plan view.
  • the hauling device is a jack arranged to selectively draw in or feed out the pilot line.
  • the jack may comprise two clamps for clamping the pilot line, at least one of the clamps being moveable, such that the jack draws in or feeds out the pilot line step wise.
  • the jack may comprise two moveable clamps for clamping the pilot line, such that the jack draws in or feeds out the pilot line substantially continuously.
  • the hauling device is a winch.
  • a method for mooring a floating vessel comprising the steps of:
  • the arrangement may be such that the pulley is fixed on the beam at the first distance from the turret axis. In that case, once the step of rotating the beam is complete, the pulley is automatically in line directly above a selected one of the holes in the chaintable without any radial movement of the pulley being required.
  • the step of operating the hauling device may comprise operating a jack for selectively drawing in or feeding out the pilot line.
  • the jack may comprise two clamps for clamping the pilot line, at least one of the -clamps being movable, such that the jack draws in or feeds out the pilot line step wise.
  • the jack may comprise two moveable clamps for clamping the pilot line, such that the jack draws in or feeds out the pilot line substantially continuously.
  • the step of operating the hauling device may comprise operating a winch.
  • the step of feeding out pilot line comprises operating the hauling device.
  • the step of securing the mooring line to the turret comprises securing the mooring line to a joint on the turret for connection of a mooring line.
  • the joint may be located on the chaintable.
  • the step of connecting the pilot line at a second part to a selected mooring line comprises connecting a connection device at the second part of the pilot line to the mooring line.
  • a method for releasing a floating vessel from its mooring comprising the steps of:
  • the arrangement may be such that the pulley is fixed on the beam at the first distance from the turret axis. In that case, once the step of rotating the beam is compete, the pulley is automatically in line directly above a selected one of the holes in the chaintable without any radial movement of the pulley being required.
  • the step of operating the hauling device may comprise operating a jack for selectively drawing in or feeding out the pilot line.
  • the jack may comprise two clamps for clamping the pilot line, at least one of the clamps being moveable, such that the jack draws in or feeds out the pilot capita step wise.
  • the jack may comprise two moveable clamps for clamping the pilot line, such that the jack draws in or feeds out the pilot line substantially continuously.
  • the step of operating the hauling device may comprise operating a winch.
  • the step of feeding out pilot line comprises operating the hauling device.
  • the step of connecting the pilot line at a second part to a selected mooring line comprises connecting a connection device at the second part of the pilot line to the mooring line.
  • Figure 4 is a cross sectional view of the turret of the present invention and Figure 5 is a section along line V-V in Figure 4 .
  • Figure 6 shows the lower portion of Figure 4 in more detail.
  • the lower portion of the turret 401 includes chain jack 403 which, in this embodiment, replaces the winch or winches of previous known arrangements. Operation of the chain jack will be described in more detail below.
  • the chain jack is located upside down along the vertical axis 405 of the turret.
  • the lower portion of the turret 401 also includes a horizontal beam 423 on which are mounted two pulleys, first pulley 419 and second pulley 421.
  • the horizontal beam 423 is positioned between the turret's vertical axis 405 and the outer circumference of the turret.
  • the chain jack 403 is equipped with a pilot chain 407 which may pass over only first pulley 419 (first position 403a) or over both first 419 and second 421 pulleys (second position 408b).
  • the pilot chain transmits the force from the chain jack to a selected mooring chain or riser.
  • the two pulleys 419, 421 are fixed on the beam but the whole arrangement (chain jack plus beam with fixed pulleys) is mounted on bearings to be rotatable in a horizontal plane around the turret's vertical axis thereby aligning first pulley 419 with a selected hole on the chaintable 413 or second pulleys 421 with a selected hole on the chaintable 413 for installation of a selected mooring chain or riser.
  • the whole arrangement is rotated, in order to align the selected pulley with the selected hole in the chaintable, by independent derive means (not shown).
  • the beam/turret interface is, in this embodiment, equipped with Teflon pads 605 (see Figure 6 ) to facilitate rotation.
  • chaintable 413 includes a number of holes 415 for installation of the risers 411 and a number of holes 416 for installation of the mooring chains 409.
  • the holes 415 for the risers are located in two circles, each having their centres on the vertical axis of the turret, so there are two rings of riser holes, inner holes 415a and outer holes 415b.
  • the holes 416 for the mooring chains 409 are angularly aligned with joints 417 for connection of the mooring chains.
  • First pulley 419 is positioned towards the vertical axis of the turret in line with inner holes 415a in the chaintable 413.
  • Second pulley 421 is further outwardly than the first pulley 419 in line with outer holes 415b in the chaintable 413.
  • the pilot chain passes over first pulley 419 and is aligned with an inner hole 415a in the chaintable 413 for installation/abandonment/recovery of a riser at that radial position.
  • the pilot chain passes over first pulley 419 and can then pass through a hole 416 in the chaintable 413 for installation/abandonment/recovery of a mooring chain.
  • the holes 416 are, in this embodiment, not radially aligned with first pulley 419. This means that during installation/abandonment/recovery of a mooring chain, the pilot chain does not pass vertically downwards hole 416 from pulley 419 but, instead, passes downwards from pulley 419 to hole 416 at a small angle from the vertical. In position 408b, the pilot chain passes over first pulley 419 and second pulley 421 and is aligned with an outer hole 415b in the chaintable 413 for installation/abandonment/recovery of a riser at that radial position. The pulley or pulleys convert the force transmitted through the pilot chain 407 to the correct direction for the upside down mounted chain jack.
  • a downward net force on the pilot chain at the chain jack is transmitted to an upward net force on the pilot chain at the mooring chain/riser and during abandonment, a downward net force on the pilot chain at the mooring chain/riser is transmitted to an upward net force on the pilot chain at the chain jack.
  • the chain jack is a specially designed pulling device which operates as a linear winch.
  • the chain jack releases or recovers the chain in a non-continuous movement, i.e. in a step by step type movement via two clamps able to grip one or more chain rings.
  • One of the clamps 601 is moveable to carry out the pulling operation by releasing or recovering sections of the chain at a time.
  • the moveable clamp 601 is shown in its two alternative positions in Figure 6 .
  • the other clamp 603 is fixed.
  • the chain jack could equally be constructed with two moveable clamps so that the releasing or recovering of the chain occurs in a continuous movement.
  • the chain jack 403 acts as a linear winch and is mounted upside down and in the lower part of the turret just above the chaintable 413, the whole arrangement takes up less space than prior art arrangements.
  • the upside down mounting of the chain jack 403 means only one pulley 421 is required to transmit the force along the pilot chain.
  • the unused part of the pilot chain 407 is able to hang from the chain jack 403 through an aperture in the chaintable 413 aligned with the turret's vertical axis 405 rather than being stored on the vessel or upper part of the turret.
  • the chain jack arrangement could equally be replaced by an upside-down nonlinear winch arrangement also just above the chaintable.
  • the pulley and beam mechanism is much simpler than the pulley mechanisms of the prior art.
  • the two pulley arrangement and the positioning of the holes in the chaintable allow the pilot chain to be aligned with the selected mooring chain or riser without the need for any translating pulley i.e. the two pulleys can be fixed to the beam and do not need to be moveable along the beam.
  • more than two pulleys could be fixed to the beam for use with more than two sets of rings of holes in the chaintable.
  • the method of installation of a mooring chain is as follows:
  • the method of installation of a riser is similar to that of a mooring chain, as follows:

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Earth Drilling (AREA)
  • Flexible Shafts (AREA)
  • Transmission Devices (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

La présente invention concerne une tourelle (401) et un procédé pour amarrer une installation flottante à l’aide de la tourelle. La tourelle (401) peut pivoter par rapport à l’installation autour d’un axe de la tourelle (405). La tourelle (401) a une plaque à chaîne (413), à une première extrémité de la tourelle. La plaque à chaîne (413) a une pluralité de trous disposés à une première distance de l’axe de la tourelle. La tourelle a également un dispositif de halage (403) dans la tourelle (401) pour exercer une force sur une ligne d’amarrage ou une colonne montante. La tourelle a également une poutre (423) ayant une poulie (419, 421) fixée sur elle. La poutre (423) peut pivoter autour de l’axe de la tourelle (405). La plaque à chaîne (413), le dispositif de halage (403) et la poutre (423) sont disposés de manière à ce que, pendant l’utilisation, une conduite de pilotage, raccordée d’une première extrémité au dispositif de halage (403) et d’une deuxième extrémité à la ligne d’amarrage ou la colonne montante, passe autour de la poulie (419, 421), la force exercée sur la ligne d’amarrage ou la colonne montante par le dispositif de halage (403) à travers la conduite de pilotage, opère au niveau du dispositif de halage (403), sensiblement le long de l’axe de la tourelle (405) et sensiblement vers la plaque à chaîne (413).

Claims (14)

  1. Tourelle (401) pour amarrage avec tourelle d'un navire flottant, la tourelle (401) pouvant pivoter par rapport au navire autour d'un axe de tourelle (405), la tourelle comprenant :
    un plateau à chaînes (413) à une première extrémité de la tourelle, le plateau à chaînes comprenant une pluralité de trous ménagés à une première distance de l'axe de la tourelle ;
    un dispositif de halage (403) dans la tourelle pour exercer une force sur une ligne d'amarrage ou un treuil d'amarrage ; et
    une poutre (423) sur laquelle est fixée une poulie (419), la poutre (423) s'étendant entre le centre de la tourelle et une portion extérieure de la tourelle et pouvant pivoter autour de l'axe de la tourelle,
    le plateau à chaînes (413), le dispositif de halage (403) et la poutre (423) étant aménagés de sorte qu'en service, lorsqu'une ligne pilote (407), raccordé à une première extrémité au dispositif de halage et à une seconde extrémité à la ligne d'amarrage ou au treuil d'amarrage, passe autour de la poulie (419), la force exercée sur la ligne d'amarrage ou le treuil d'amarrage par le dispositif de halage via la ligne pilote opère, au niveau du dispositif de halage, sensiblement le long de l'axe de la tourelle (405) et sensiblement vers le plateau à chaînes (413).
  2. Tourelle selon la revendication 1, dans laquelle la poulie (419) est fixée sur la poutre (423) à la première distance de l'axe de tourelle (405) de sorte que la poulie puisse être alignée avec chacun de la pluralité de trous dans le plateau à chaînes (413).
  3. Tourelle selon la revendication 1 ou la revendication 2, dans laquelle la ligne pilote (407) passe autour d'une seule poulie (419).
  4. Tourelle selon la revendication 1 ou la revendication 2, dans laquelle le plateau à chaînes (413) comprend une seconde pluralité de trous ménagés à une seconde distance de l'axe de la tourelle.
  5. Tourelle selon la revendication 4, dans laquelle sur la poutre (423) est fixée une seconde poulie (421) à la seconde distance de l'axe de la tourelle (405) de sorte que la seconde poulie (421) puisse être alignée avec chacun de la seconde pluralité de trous dans le plateau à chaînes (413).
  6. Tourelle selon l'une quelconque des revendications précédentes, dans laquelle le dispositif de halage (403) est situé dans la tourelle (401), sensiblement adjacent au plateau à chaînes (413).
  7. Navire comprenant une tourelle selon l'une quelconque des revendications précédentes.
  8. Appareil à monter dans une tourelle pour amarrage avec tourelle d'un navire flottant, la tourelle (401) pouvant pivoter par rapport au navire autour d'un axe (405) sensiblement vertical, l'appareil comprenant :
    un dispositif de halage pour exercer une force sur une ligne d'amarrage ou un treuil d'amarrage via une ligne pilote (407) ;
    une poutre (423) s'étendant entre le centre de la tourelle et une portion extérieure de la tourelle et disposée de manière à pouvoir pivoter autour de l'axe de la tourelle ; et
    une poulie (419) fixée sur la poutre (423),
    dans laquelle, en service, la force exercée sur la ligne d'amarrage ou sur le treuil d'amarrage par le dispositif de halage via la ligne pilote opère, au niveau du dispositif de halage, sensiblement le long de l'axe de la tourelle et sensiblement dans une direction descendante.
  9. Appareil selon la revendication 8, comprenant en outre la ligne pilote (407).
  10. Appareil selon la revendication 8 ou la revendication 9, comprenant en outre une seconde poulie (421) fixée sur la poutre.
  11. Tourelle selon l'une quelconque des revendications 1 à 6, navire selon la revendication 7 ou appareil selon l'une quelconque des revendications 8 à 10, dans lesquels le dispositif de halage (403) est un vérin disposé pour faire entrer ou sortir la ligne pilote de manière sélective.
  12. Tourelle, navire ou appareil selon la revendication 11 dans lesquels le vérin comprend deux brides pour bloquer la ligne pilote, au moins l'une des attaches étant mobile.
  13. Procédé pour amarrer un navire flottant, comprenant les étapes consistant à :
    mettre en oeuvre une tourelle (401) qui peut pivoter par rapport au navire autour d'un axe (405) sensiblement vertical, la tourelle comprenant un plateau à chaînes (413) à son extrémité inférieure, le plateau à chaînes ayant une pluralité de trous ménagés à une première distance de l'axe ;
    mettre en oeuvre une poutre (423) dans la tourelle, la poutre s'étendant entre le centre de la tourelle et une portion extérieure de la tourelle, une poulie (419) étant montée sur la poutre ;
    mettre en oeuvre une ligne pilote (407), la ligne pilote étant disposé pour passer sur la poulie et pour être raccordé, sur une première partie, à un dispositif de halage monté dans la tourelle ;
    faire pivoter la poutre (423) autour de l'axe de sorte que la poulie soit alignée au-dessus d'un trou sélectionné parmi la pluralité de trous du plateau à chaînes ;
    faire sortir la ligne pilote (407) par le trou sélectionné dans le plateau à chaînes ;
    raccorder la ligne pilote (407), sur une seconde partie, à une ligne d'amarrage sélectionnée ;
    actionner le dispositif de halage pour faire entrer la ligne pilote afin de relever la ligne d'amarrage vers le plateau à chaînes, la force exercée sur la ligne d'amarrage par le dispositif de halage via la ligne pilote opérant, au niveau du dispositif de halage, sensiblement le long de l'axe de la tourelle et sensiblement dans une direction descendante ;
    sécuriser la ligne d'amarrage à la tourelle ; et
    déconnecter la ligne pilote de la ligne d'amarrage.
  14. Procédé pour libérer un navire flottant de son amarrage, comprenant les étapes consistant à :
    mettre en oeuvre une tourelle (401) qui peut pivoter par rapport au navire autour d'un axe sensiblement vertical, la tourelle comprenant un plateau à chaînes (413) à son extrémité inférieure, le plateau à chaînes ayant une pluralité de trous ménagés à une première distance de l'axe ;
    mettre en oeuvre une poutre (423) dans la tourelle, la poutre s'étendant entre le centre de la tourelle et une portion extérieure de la tourelle, une poulie (419) étant montée sur la poutre ;
    mettre en oeuvre une ligne pilote (407), la ligne pilote étant disposé pour passer sur la poulie et pour être raccordé, sur une première partie, à un dispositif de halage monté dans la tourelle ;
    faire pivoter la poutre (423) autour de l'axe de sorte que la poulie soit alignée au-dessus d'un trou sélectionné parmi la pluralité de trous du plateau à chaînes ;
    faire sortir la ligne pilote (407) par le trou sélectionné dans le plateau à chaînes ;
    raccorder la ligne pilote (407), sur une seconde partie, à une ligne d'amarrage sélectionnée sécurisée à la tourelle ;
    désolidariser la ligne d'amarrage de la tourelle ;
    actionner le dispositif de halage pour faire sortir la ligne pilote afin d'abaisser la ligne d'amarrage en l'éloignant du plateau à chaînes, la force exercée sur la ligne d'amarrage par le dispositif de halage via la ligne pilote opérant, au niveau du dispositif de halage, sensiblement le long de l'axe de la tourelle et sensiblement dans une direction descendante ; et
    déconnecter la ligne pilote de la ligne d'amarrage.
EP05789345A 2004-08-24 2005-08-24 Appareil et procede pour amarrer une installation flottante Expired - Lifetime EP1799539B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0418898A GB0418898D0 (en) 2004-08-24 2004-08-24 Apparatus and method for mooring a floating vessel
PCT/EP2005/009131 WO2006021433A1 (fr) 2004-08-24 2005-08-24 Appareil et procédé pour amarrer une installation flottante

Publications (2)

Publication Number Publication Date
EP1799539A1 EP1799539A1 (fr) 2007-06-27
EP1799539B1 true EP1799539B1 (fr) 2012-05-23

Family

ID=33104568

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05789345A Expired - Lifetime EP1799539B1 (fr) 2004-08-24 2005-08-24 Appareil et procede pour amarrer une installation flottante

Country Status (7)

Country Link
EP (1) EP1799539B1 (fr)
CN (1) CN101014492B (fr)
AU (1) AU2005276561B2 (fr)
BR (1) BRPI0514583A (fr)
GB (1) GB0418898D0 (fr)
MX (1) MX2007002166A (fr)
WO (1) WO2006021433A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2154059B1 (fr) * 2008-08-08 2011-05-18 Bluewater Energy Services B.V. Assemblage de connecteur de chaîne d'amarrage pour dispositif flottant
NL2007463C2 (en) * 2011-09-23 2013-03-26 Ihc Holland Ie Bv Device for and method of tensioning chains, in particular mooring legs.
EP3190878B1 (fr) 2014-09-22 2022-07-20 Forever Oceans Corporation Système et méthode d'amarrage
KR101964203B1 (ko) * 2017-11-13 2019-04-02 삼성중공업 주식회사 선박

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6564740B1 (en) 1999-09-09 2003-05-20 Fmc Technologies, Inc. Chain tensioning arrangement for turret moored vessel

Also Published As

Publication number Publication date
AU2005276561A1 (en) 2006-03-02
WO2006021433A1 (fr) 2006-03-02
CN101014492B (zh) 2010-05-05
MX2007002166A (es) 2007-10-16
BRPI0514583A (pt) 2008-06-17
EP1799539A1 (fr) 2007-06-27
CN101014492A (zh) 2007-08-08
GB0418898D0 (en) 2004-09-29
AU2005276561B2 (en) 2011-09-15

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