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EP2646725B1 - Marine halterung mit einer vorrichtung zur aufbewahrung und führung von schläuchen - Google Patents

Marine halterung mit einer vorrichtung zur aufbewahrung und führung von schläuchen Download PDF

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Publication number
EP2646725B1
EP2646725B1 EP11787889.2A EP11787889A EP2646725B1 EP 2646725 B1 EP2646725 B1 EP 2646725B1 EP 11787889 A EP11787889 A EP 11787889A EP 2646725 B1 EP2646725 B1 EP 2646725B1
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EP
European Patent Office
Prior art keywords
pipe
support
turntable
flexible
flexible pipes
Prior art date
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Active
Application number
EP11787889.2A
Other languages
English (en)
French (fr)
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EP2646725A1 (de
Inventor
Raymond Hallot
Cédric BRUGUIER
Benjamin Mauries
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 SA
Original Assignee
Saipem SA
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Filing date
Publication date
Application filed by Saipem SA filed Critical Saipem SA
Publication of EP2646725A1 publication Critical patent/EP2646725A1/de
Application granted granted Critical
Publication of EP2646725B1 publication Critical patent/EP2646725B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/30—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures
    • B63B27/34—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures using pipe-lines
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/40—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable
    • B65H75/42—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable attached to, or forming part of, mobile tools, machines or vehicles
    • B65H75/425—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable attached to, or forming part of, mobile tools, machines or vehicles attached to, or forming part of a vehicle, e.g. truck, trailer, vessel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/44—Constructional details
    • B65H75/4402—Guiding arrangements to control paying-out and re-storing of the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/44—Constructional details
    • B65H75/4478—Constructional details relating to handling of fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/33—Hollow or hose-like material

Definitions

  • the present invention relates to a support installed at sea open, fixed or floating, that is to say resting or respectively anchored at the bottom of the sea, said support being equipped on the surface with a storage device and guide flexible pipes capable of storing and guiding a plurality, preferably at least 3 said flexible pipes useful for the offshore transfer of petroleum products.
  • the device for storing and guiding flexible pipes disposed on board a support allows the handling of said flexible pipes for their storage in the wound state between two fluid transfers within said flexible pipes between the floating support and a removal vessel, and for the conduct of said pipes in order to implement a said transfer of fluid between a said floating support and a said vessel preferably of the LNG type.
  • a particular technical field of use of a support according to the invention is the field of offshore discharge of petroleum products including both liquid crude oil and diesel or liquefied gases, in particular natural gas LNG, or gas in the gaseous state, from a said support, for example at a petroleum field, to a removal vessel disposed in pairs or in tandem as explained below.
  • the technical field of the invention is more particularly the field of the transfer at sea of liquefied natural gas (LNG) at -165 ° C, between a floating support comprising at least one LNG storage tank, and a vessel preferably of LNG type arranged in tandem or in pairs, that is to say at a distance from the floating support in the same longitudinal direction as said floating support, or parallel thereto.
  • LNG liquefied natural gas
  • Petroleum products such as oil or gas are general recovered, processed and stored aboard a said floating support including the type called FPSO ("Floating-Production-Storage-Offloading"), ie floating support production, storage and unloading. Petroleum products such as oil and / or gas are then exported by removing vessels that come regularly, for example every week, to recover the production of the field. Three techniques are commonly used for this purpose.
  • FPSO Floating-Production-Storage-Offloading
  • a first technique consists in installing, at a distance of about 1000-1500m from the FPSO, a so-called loading buoy connected to the FPSO by an underwater pipe, the oil or gas being transferred into said unloading buoy via said sub-pipe. Marine. An abducting tanker then berths at said loading buoy, then the load is recovered via flexible connecting pipes connected to said buoy floating on the surface of the sea, the oil or gas being then pushed by a pump on board. FPSO to perform the loading of the oil tanker.
  • a second technique is to bring the removal vessel FPSO couple, that is to say bordered against the plating.
  • the transfer is carried out either by articulated type loading arms, as is usual during transfers to the port, or by flexible pipes of reduced lengths.
  • a third technique consists in arranging the collecting vessel in tandem with the FPSO, that is to say that the collecting vessel is positioned in the axis of the FPSO at a safety distance of at least 50 to 150 m, then mooring at the latter, and recovering the end of the flexible pipes extending from the floating support where they are connected to a tank at their other end and floating on the sea, to connect them on board the said removing vessel, the oil or the gas is then pushed by a pump from the FPSO to perform the loading of the oil tanker.
  • a loading buoy On the oilfields, it is generally preferred to implement a loading buoy, but it is generally associated with a redundancy device that can be either a torque device that is to say with a removal vessel arranged at FPSO torque, ie a tandem device that is to say with a removal vessel arranged in tandem of the FPSO, sometimes even both devices.
  • a redundancy device can be either a torque device that is to say with a removal vessel arranged at FPSO torque, ie a tandem device that is to say with a removal vessel arranged in tandem of the FPSO, sometimes even both devices.
  • the connecting lines either to an unloading buoy or to a removing vessel, remain full, either of said crude oil or of a petroleum product, generally diesel, used to replace crude oil when the latter presents risks of freezing (paraffinic crudes).
  • the transfer devices comprise at least one forward link line for the liquefied gas, and a return link line, in general of smaller diameter, to evacuate the gas from the vessels of the removal vessel as and when filled by LNG, especially methane gas, so reliquefier aboard the FPSO.
  • the flexible connection lines must be almost completely emptied after unloading, so as to prevent the formation and accumulation of ice on said pipes and more particularly at the mechanical connections of said pipes.
  • the latter must be extremely insulated in order to limit the regasification of liquid methane (LNG) during its transfer. This is why, for this purpose, unloading methods are preferred with torque and tandem devices in which the connecting lines are not submarine pipes but pipes floating on the surface, on the one hand, and on the other hand. on the other hand, said pipes being relatively shorter in length.
  • the unloading torque is however very delicate because the approach of a removing vessel to come to position parallel to the FPSO within 5m of distance, is possible only in very lenient sea conditions. Indeed, in case of bad seas, the transfer becomes impossible and this may lead, if the FPSO is full, to have to stop production, which is a serious handicap for the profitability of the operating facilities of the oil field in question.
  • the transfer means consist of loading arms conventional devices, or devices with flexible pipes, installed on board said FPSO.
  • the patent EP-2,239,190 describes such a device for unloading torque.
  • Tandem unloading is much safer, but the unloading lines are longer and therefore more complicated to maneuver and store onboard the FPSO.
  • numerous devices for storing and guiding flexible pipes onboard the FPSO have been developed. Some use a considerable articulated type supporting structure supporting a plurality of rigid pipes having rotary joints as a hinge, as detailed in the patent. US 4393906
  • Another technical area is the offshore storage of LNG near a site of use, for example to ship the gas on the continent after regasification, or to transform it on the spot into electrical energy to send back the electricity in the local network.
  • the ship unloads its cargo of LNG and the floating support is called "FSRU" (Floating Storage Regase Unit), ie floating storage unit and regasification.
  • FSRU Floating Storage Regase Unit
  • the object of the present invention is to provide a device for unloading in torque or in tandem between a support and an improved removal vessel.
  • the object of the present invention is to provide a support at sea equipped with a device for supporting and guiding flexible pipes facilitating the handling of said pipes to implement a transfer of fluid between the floating support and a removing vessel and for storing said flexible pipes on board the floating support between two transfers.
  • a problem to be solved according to the present invention is to provide a device for storing and guiding said flexible pipes which make it possible to regulate in a controlled manner the tension and the length between said floating support and said stripping vessel so as in particular to prevent the interfering a plurality of connecting lines extending between said floating support and said stripping vessel from the storage and guidance device.
  • pipe portion at the outlet of the plate corresponds to the non-wound pipe portion in continuity with the last turn of the wound pipe, in particular during winding or unwinding.
  • the device according to the invention is particularly advantageous for arranging relative to each other and for independently adjusting the length and / or the voltage of the different pipes extending at the outlet of trays between said plates and the second ends of flexible pipes opening in particular to a second vessel, in particular an eradicating vessel, so that they do not risk interfering with each other, or even colliding with each other, especially during unwinding or winding of the pipe before or after deployment of said pipes between said floating support and said removing vessel.
  • bordered is meant here any external wall of the hull of the ship, namely the lateral longitudinal walls of the ship. shell that the transverse walls at the longitudinal ends, namely the front and rear walls of said support.
  • flexible pipe refers to the pipes known under the name “flexible”, which are well known to those skilled in the art and which have been described in the normative documents published by the American Petroleum Institute (API), more particularly under the API 17J and API RP 17 B references.
  • API American Petroleum Institute
  • hoses are in particular manufactured and marketed by COFLEXIP France.
  • These flexible pipes generally comprise internal sealing layers of thermoplastic materials associated with layers resistant to the pressure internal to the pipe, generally made of steel or composite materials made in the form of spiral strips, contiguous inside the thermoplastic pipe to withstand the internal burst pressure and supplemented by external reinforcements above the thermoplastic tubular layer also in the form of contiguous spiral strips, but with a longer pitch, that is to say an angle of inclination of the lower helix, in particular from 15 ° to 55 °.
  • At least one said flexible pipe is wound against and around a said central shaft in concentric juxtaposed spirals of increasing diameter resting on said turntable, said central shaft having a radius greater than the minimum radius of curvature of said flexible pipe, preferably at least 3 flexible pipes are wound on respectively at least 3 said rotating plates, including at least one flexible pipe of smaller diameter than the others.
  • the present invention also provides a method for transferring a liquid or gaseous petroleum product in which a said petroleum product is transferred into at least two flexible pipes, preferably at least three flexible pipes extending between a said support according to the invention and a vessel preferably of the LNG type arranged in pairs or tandem next to said floating support opposite said plating, said flexible pipes being guided by means of a said storage and guiding device.
  • said transfer consists of an unloading of the liquefied gas from said support to a said vessel, called the removing vessel.
  • said transfer consists of a liquefied gas charge from a said ship, referred to as a supply vessel, to said support.
  • a supply vessel a liquefied gas charge from a said ship, referred to as a supply vessel.
  • said floating support may also contain a unit for generating electricity from said gas and a transformer station for sending electrical power to the earth.
  • said support is advantageously a support resting at the bottom of the sea.
  • said flexible pipes are floating pipes, floating on the surface over a portion of the distance between said support and said vessel preferably of the LNG type.
  • At least one first flexible pipe preferably at least two first and second flexible pipes, in which liquefied gas is transferred between said support
  • at least a second tank of said vessel preferably of LNG type
  • a third flexible pipe preferably of smaller diameter than said first and second flexible pipes in which gas corresponding to the gas sky of the second tank is transferred between a said second tank to a first tank within said floating support or a liquefaction unit on a said support before transfer to a said first tank.
  • the return of gas from said scavenger vessel to said floating support is as follows. and as the filling of said second tank within said removing vessel.
  • each said guide means is disposed at a different height vis-à-vis each said turntable respectively, so as to be able to support a curved intermediate portion of pipe between a downstream portion of said pipe in a substantially vertical position along said plating and a said upstream portion of the pipe at the outlet of the plate in continuity with the wound pipe portion resting on a said turntable, said upstream portion of the pipe at the outlet of the plate; extending on a virtual plane P substantially tangent to the surface of the upper face of said plate on which said wound pipe portion is wound, the different downstream pipe portions in a substantially vertical position along said strip being disposed in offset position relative to each other; to others in a said direction Y 2 Y 2 'parallel to the said bordered at the output of the said oulies.
  • each said guide means comprises a pulley of horizontal axis Y 1 Y 1 'of first rotation on itself, said pulley being further able to move, preferably freely, in second rotation with respect to a vertical axis passing through a diameter of the pulley, said first rotation on itself of each said pulley being preferably controlled by a second motor, preferably synchronized with said first motor of each said plate.
  • said intermediate portion of supported curved line by said pulley can remain permanently in the same substantially vertical plane P1, P2, P3 that a said upstream portion of the pipe at the outlet of the plateau, the different planes P1, P2, P3 being inclined at a different angle ⁇ 1, ⁇ 2, ⁇ 3 with respect to said direction Y 1 Y ' 1 , to arrive at said turntable in continuity and tangential alignment of the end of the last turn of wound pipe allowing the optimal trenching of the pipe as winding or unwinding of said pipe around said central shaft.
  • said guide means are constituted simply by chutes.
  • the different pulleys are disposed offset from each other in said horizontal direction Y 1 Y ' 1 horizontal parallel to said plating, at different heights, the high point of each pulley preferably being positioned substantially at the level of a tangent plane P to the upper face of a said turntable.
  • each pulley is supported by a second bearing structure disposed outside said floating support and fixed to the same plating at a different position in a said horizontal direction Y 1 Y 1 'parallel to said ply, each pulley being hinged in said second rotation of vertical axis Z 1 Z 1 'with respect to a part of its said second supporting structure fixed to said plating.
  • each said plate comprises or cooperates in the underside with rollers adapted to cooperate with or respectively supported by elements of said carrier structure and each said turntable comprises at said central orifice a bearing integral with said first bearing structure adapted to allow the rotation of said plate in relative rotation with respect to said first bearing structure.
  • Concave or convex frustoconical shape is understood here to mean that the virtual vertex of said cone is below or respectively above said frustoconical surface. It is understood that the angle ⁇ of conicity relative to the horizontal will be 1 to 10 °.
  • each said first connection valve situated between said first connection element and said branch is able to allow or prevent fluid circulation in said first pipe portion to or from said first connection element when it is open or respectively closed.
  • a support as defined above is particularly useful and advantageous for carrying out the almost complete purging of the flexible pipes before re-winding them on their turntable, this to avoid any damage to said flexible pipes on the one hand and the other part of facilitating this re-winding on their said turntable.
  • “Sufficiently emptied” is understood to mean that the internal volume of said duct filled with residual fluid does not represent more than 10% of the total internal volume of said duct, preferably not more than 5%, i.e., an empty internal volume of at least 90%, preferably at least 95%, more preferably at least 98% of its total internal volume.
  • the method thus makes it possible to evacuate the contents of said first flexible pipe via said second flexible pipe and thus makes it possible, after step c), to have substantially emptied or completely emptied said first flexible pipe. On the other hand, it may still remain in general at least 10% or even up to 15% of internal volume of said second pipe not emptied, even when the internal volume of said first pipe has been completely emptied.
  • the internal volume of liquid product contained in said second pipe is entirely evacuated by said third pipe.
  • said third pipe is of smaller diameter makes it possible to promote complete emptying of said third pipe, in particular at its substantially vertical terminal portion between the sea level and the inlet of its corresponding turntable, after the step e) when said second pipe has been substantially completely emptied. It is particularly advantageous to implement the combination of steps a) to e) to empty all three said first, second and third pipes.
  • said flexible pipes are rewound on their so-called turntables, until the second ends of all of said flexible pipes are out of water, preferably with said first connecting device and valves arriving just below the lowest turntable cooperating with a said flexible pipe.
  • said first valve and connection device remains permanently fixed to said second ends of all of said flexible pipes with which it cooperates, when rewinding said flexible pipes, and said first Connection and valves remain out of water, preferably near the level of the lowest turntable.
  • said first pipe is wound on a said convex turntable as defined above.
  • At least one of the two said second and third pipes used for the transport of liquid preferably the two said second and third pipes used for the transport of liquid, is (or are) wound on a said frustoconical tray of concave shape as defined above.
  • any residual liquid in said second and third pipes can thus flow to the tank through said first end of said pipes below by residual natural gravity if necessary when the pipe is wound.
  • FIG. 1A there is shown in side view a floating support according to the invention 1 FPSO type 1-1 anchored 1a on an open sea gas production field.
  • Said FPSO has gas treatment and liquefaction equipment 1b and first LNG storage tanks 11 integrated into the hull.
  • An LNG-type 2 removal vessel is positioned in tandem, substantially in the axis of said FPSO and is connected thereto by a set of three hose lines 3A, 3B and 3C handled by means of a storage device 4 and flexible pipe guidance 3 according to the invention which will be detailed further in the description.
  • Said flexible pipes 3 are floating flexible pipes of the type manufactured and marketed by Trelleborg (France) consisting essentially of metal or composite armor and vulcanized or thermoplastic elastomers.
  • Such pipes for the transfer of liquefied gas discharge traditionally has internal diameters of 250 to 600 mm and external diameters of 400 to 1000 mm. They are generally manufactured in lengths of 12m and are assembled together at their ends equipped with flanges to obtain lengths of 120 to 250m.
  • gas gas transfer pipes in the gaseous state between the removing vessel 2 and the floating support 1 as will be explained below, the pipes are of the same total length but advantageously of reduced diameter, 150 to 400mm inside diameter.
  • the storage device consists of a plurality of 3 rotating plates 4-1, 4a, 4b, 4c arranged one above the other, preferably coaxially along the same vertical axis of rotation ZZ '.
  • the 3 trays 4-1 are supported by a first support structure 5 resting on the bridge 1c of the floating support 1 near a plating 1d at one of its longitudinal ends.
  • the first support structure 5 here comprises 8 vertical posts 5b interconnected by first horizontal beams 5c at different heights and second horizontal beams 5a arranged radially and diametrically between vertical poles 5b diametrically opposed.
  • Said horizontal beams 5a form horizontal bearing structures at three heights different able to support each one of the 3 turntables 4-1.
  • Each of said rotating plates have in its center an orifice 4-2 and a bearing 4-4, for example a roller bearing, said bearing being partly integral with a said horizontal bearing structure 5a and allowing said plate to be rotated. rotating about its central axis of rotation ZZ 'with a first motor 6 and rollers 4-5 described below.
  • Each turntable 4-1 is in fact supported at its periphery and in the underside of said trays by a series of rollers 4-5, preferably evenly distributed around the periphery, the supports 4-5a of said rollers 4-5 being integral. of a said horizontal carrier structure 5a.
  • Each turntable 4-1 is rotated about its vertical axis ZZ 'by means of a first motor 6, preferably hydraulic, driving in rotation an output shaft comprising a gear cooperating with a toothed wheel 6-1 integral with said turntable 4-1 thereby rotating said turntable when said output shaft is rotated.
  • a first motor 6 preferably hydraulic, driving in rotation an output shaft comprising a gear cooperating with a toothed wheel 6-1 integral with said turntable 4-1 thereby rotating said turntable when said output shaft is rotated.
  • a central shaft 4-3 is disposed above said port 4-2 of each of said rotating plates.
  • the outer radius of said central shaft 4-3 is greater than the minimum radius of curvature of said flexible pipe to be wound contiguous concentric spiral resting side by side on said turntable.
  • Said central shaft 4-3 is integral with said turntable 4-1.
  • a rotary joint 7 of the type known to those skilled in the art is installed at the axis ZZ 'of each said turntable 4-1.
  • rotary joint 7-1 consists of a rotary joint itself 7-1 whose upper part is equipped with an upper elbow 7-2 whose end comes against the wall of said central shaft 4-3.
  • the end of the upper elbow 7-2 being sealingly connected at 7a to a first end 3-1 of flexible pipe 3 intended to be wound in a spiral against and around said central drum 4-3 when said turntable 4-1 is rotated.
  • the lower part of the rotary joint 7-1 it comprises a lower bend 7-3 which remains fixed when said upper bend 7-2 is rotated by rotation of said turntable 4-1.
  • the lower bend 7-3 is itself sealingly connected to an end 8-1 of a transfer pipe 8, the other end of which is connected to a first tank 11 of the FPSO 1, thus making it possible to bring LNG from said first tank 11 of the FPSO 1, is connected to a reliquefaction unit on board the FPSO thus returning gas from said removing vessel 2 to said reliquefaction unit.
  • the various transfer lines 8 all pass inside the respective central orifices 4-2 of the various plates 4-1.
  • each flexible pipe 3, 3a-3b-3c is guided by a guide means 10 of which only one is shown on the figure 2 , each guide means 10 comprising a pulley 10-1 disposed in a substantially vertical axial plane and adapted to rotate on itself in first rotation of horizontal axis Y 1 Y 1 '.
  • the pulley 10-1 has a radius greater than the minimum radius of curvature of said flexible pipe 3 intended to be turned around said pulley.
  • Said pulleys 10-1, 10-1a, 10-1b, 10-1c are arranged close to and opposite each of said rotating plates 4-1 so that the groove of said pulley at its point the highest reaches substantially at a virtual plane P tangent to the upper face 4-1a, virtual plane P on which rests the pipe portion 3-2 at the output of said turntable.
  • the generatrix of the surface of the upper face 4-1a of revolution of said circular rotating plate 4-1 is tangent to the groove of said pulley at its highest point.
  • Each pulley 10-1 is secured to a second support structure 10-2 comprising a vertical support 10-3 ending at its apex by a stirrup supporting the horizontal hub disposed along the axis of first rotation on itself Y 1 Y ' 1 for pulley 10-1 of the figure 3 , said vertical support 10-3 being articulated in second rotation along its vertical axis Z 1 Z ' 1 at the top of a fixed pylon 10-4 resting on a structure 10-5 itself secured to the hull of the FPSO 1 at the level of said plating 1d. Because said vertical support 10-3 can be articulated freely in rotation along its vertical axis Z 1 Z ' 1 , said pulley 10-1 is able to be articulated in second rotation along said vertical axis Z 1 Z' 1 .
  • the vertical support 10-3 supporting the pulley 10-1 is able to be moved in height to properly adjust the position of the top of the pulley with respect to the plane tangent to the upper face of the plate 4-1 screwed to which she is disposed.
  • Such a second rotation along the axis Z 1 Z ' 1 of said pulley 10-1 will occur as shown in FIG. figure 3 as distance from the center of the plate of the last point of contact of the last turn of the pipe wound on said plate, between two limit points O and M, O being the closest point of the barrel 4 -3 (completely unrolled pipe) and M being the closest point to the periphery of the plate (fully wound pipe) as shown in FIG. figure 3 .
  • the said axial planes P1, P2, P3 of the three pulleys also correspond to the substantially vertical axial planes of the three upstream pipe portions extending between each of said plates and respectively each of said pulleys.
  • Each pulley 10-1 is preferably motorized by a second motor 10-6, preferably hydraulic, cooperating with a ring gear, not shown, integral with said pulley and allowing to drive in said first rotation on itself around its said horizontal axis Y 1 Y ' 1 each of said pulleys 10-1.
  • the different pulleys 10-1 are arranged at a different altitude corresponding to that of said tray 4-1 it serves on the one hand and on the other hand said pulleys 10-1 are arranged next to each other offset in the direction Y 1 Y ' 1 , despite the second rotation angles ⁇ 1 , ⁇ 2 , ⁇ 3 of each of the 3 pulleys 10-1a, 10-1b, 10-1c, said pulleys are not in danger of interfere with each other.
  • the curved intermediate portions 3-3 of flexible pipe 3 turned around the pulley 10-1 are continued by a downstream driving portion 3-4 in a substantially vertical position joining the surface 20 of the sea where it floats on a portion 3- 5 of their length towards the ship 2.
  • the vertical downstream portions 3-4 of the various lines 3, 3a, 3b, 3c are offset in a direction Y 1 Y ' 1 but remain in substantially vertical and substantially parallel axial planes despite said second rotation along their axis Z 1 Z 1 of said pulleys 10-1a, 10-1b, 10-1c.
  • the floating support 1-1 and the vessel 2 are arranged parallel side by side along their longitudinal edges in their longitudinal directions XX 'and the flexible pipes 3 connecting the device 4 on board the support 1-2 to the ship 2 are arranged above the sea level 20.
  • the flexible pipes 3 adopt a configuration in the form of a chain above sea level 20 from the pulley outlets 10-1 at the storage and guidance devices 4 of the floating support 1 to the common valve device 13 on the LNG carrier 2.
  • a plate 4-1 has a diameter of about 20 m.
  • the height of the storage device 4, that is to say the height of the various posts 5b is about 15 to 20 m for 3 trays 4-1 spaced in height from 4 to 5 m from each other.
  • a central shaft 4-3 will typically have a diameter of 5 to 8 m.
  • Such a device 4 is particularly suitable for receiving flexible pipes with a diameter of 120 to 600 mm and a length of 120 to 250 m.
  • Each of said rotating plates 4-1 can be rotated about its axis ZZ 'independently of one another. It is the same for the motorization in said first rotation of said pulleys 10-1.
  • the respective diameters of each of said flexible pipes being in general different, it takes a number of different turntable turns to each of said flexible pipes 3a, 3b and 3c to store the same length of flexible pipe.
  • FIGS. Figures 4A and respectively 4B are advantageous to completely purge the residual LNG within said wound pipe which has allowed the transfer of LNG from the floating support 1 to the LNG carrier 2 as a function of the conditions of use of said pipes during their purging as described herein. -after.
  • the flexible pipes 3b, 3c carrying the liquefied gas LNG stored in a first tank 11 of the support 1 to the vessel 2 have a very large diameter so as to optimize the transfer rate of LNG, while the return gas can be conveyed in a single pipe, generally of smaller diameter, because the pressure losses are considerably lower for gas than for LNG.
  • LNG liquefied natural gas consists essentially of liquid methane at -165 ° C
  • the removal vessels are made up of LNG tankers that is to say ships carrying LNG gas and whose vessels when they are The voids are in fact filled with gaseous methane, and possibly with nitrogen, from the regasification of LNG.
  • the implementation of these gas return pipes is intended on the one hand to evacuate the gas sky of the second tanks as and when they are filled by LNG from the first tanks on the one hand and the other hand LNG gas regasified during its transfer due to its relative warming. Once returned to the support 1, the gas is reliquefied in LNG.
  • connection device and valves 13 and the method of purging the flexible pipes before these are re-wound on their turntable are described below. This purge is necessary firstly to lighten the flexible pipes and facilitate their re-winding but also to prevent damage to said flexible pipes during their re-winding on said turntables, damage that could occur due to their excessive weight in the liquid-filled state, and the presence of seawater ice on their surface or at the connection elements.
  • the various valves are ball valves or butterfly valves.
  • first connecting elements are held fixed at a constant distance from each other by said first support 24 to which they are secured at 24a, 24b, 24c and that said first complementary connecting elements are also fixed to constant distance from each other and identical to the distance separating said first connecting elements from each other.
  • the connection between said first device 13-1 and second device 13-2 can be done automatically by actuators not shown remote controlled, and in a single sequence.
  • the automatic connectors 23-1 / 23-2 are sealed and the valves 22a-22b-22c and the valves 27a-27b-27c are in the open position, thus allowing the passage from the left to the right of the LNG in the two lines 3b and 3c from the support 1 to the removing vessel 2, and the passage of the methane gas back, from right to left, in the central pipe 3a from the removing vessel 2 to the FPSO1.
  • LNG transfers are represented by a double-headed arrow
  • gas transfers are represented by a single-line arrow, the length of said arrow being proportional to the flow in the respective pipe.
  • valves 30ab, 30ac and 30bc are in the closed position as shown in FIG. Figure 5A .
  • the pipe 3b is empty but there is still liquid in the pipe 3c at a rate of 10 to 20% of the internal volume of the pipe 3c, especially in its substantially vertical portion 3-4 as shown Figure 8B .
  • FIG. 7B and 7C there is shown a more complete purge mode of the flexible pipes 3b and 3c in which a first flexible pipe 3c is purged, by injecting the gas through the gas return pipe 3a.
  • the valve 30ac is opened, the valves 30ab and 30bc being closed, as shown in FIG. Figure 7B .
  • the purge is stopped when most of the LNG, ie at least 85% of the LNG of the 3C line has been recovered on board the FPSO.
  • the valve 30ac is closed and the valve 30ab is opened, which has the effect of purging the second flexible pipe 3b in the same way, ie up to at least 85% of the LNG of the pipe 3b has been recovered on board the FPSO.
  • the flexible pipe 3b is shown in side view from its storage tray to sea level.
  • the convex storage tray 4-1b has a convex frustoconical upper face with a negative angle ⁇ , which is advantageous for the purge phase of the flexible pipes, because in the description of the invention with reference to the Figure 7A it is by this conduct that the purge gas is injected and the conicity of the storage tray, the pipe empties naturally down.
  • the flexible pipe 3b is shown in side view from its storage tray to sea level.
  • the concave storage tray 4-1c has a concave frustoconical upper face with a positive angle ⁇ , which is advantageous for the purge phase of the flexible pipes, because in the description of the invention with reference to Figures 7A and 7B it is by this conduct that the two-phase mixture rises towards the FPSO, and from the conicity of the storage tray, the spirally stored pipe on said conical plate empties naturally to the rotary joint 7 located at the axis ZZ ' of the plateau.
  • said pipe is shown almost empty in its horizontal part 3-5, the two-phase mixture in the substantially vertical portion 3-4 having small diameter bubbles at the bottom and increasing diameters as the ascension to the storage tray, the mixture in the pipe.
  • the storage tray of the gas return line ( Figure 7C ) 3a ( Figure 7D ) is advantageously concave conical type with a positive angle ⁇ .
  • the first connecting device 13-1 After purging the three lines 3a, 3b, 3c, they are rewound on their respective turntables until said first connecting device 13-1 reaches above the level of the water particularly substantially below the turntable lower than that of the flexible pipes joined by the device 13-1 as shown in FIG. figure 1D , the first connecting device 13-1 can thus remain permanently at said second end 3-6 of said pipes 3a, 3b, 3c joined by said first device 13-1.
  • the pipe purge procedure performed with a gas velocity of 4m / s under these conditions represents an overall duration of 30 to 45 minutes to reach an overall LNG balance less than 1% of the volume. This represents approximately 425 liters of residual LNG which will then produce 250m 3 of gaseous methane, which will subsequently be reliqued onboard the FPSO.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
  • Unwinding Of Filamentary Materials (AREA)

Claims (20)

  1. Stütze (1), die geeignet ist, im Meer fest (1-2) oder schwimmend (1-1) aufgestellt zu werden, wobei die Stütze an der Oberfläche mit einer Vorrichtung zur Lagerung und Führung (4) von flexiblen Leitungen (3, 3a-3b-3c) ausgestattet ist, die geeignet ist, mehrere, vorzugsweise mindestens 3 der flexiblen Leitungen, zu lagern und zu führen, wobei die Vorrichtung zur Lagerung und Führung umfasst:
    - eine erste Tragstruktur (5), die auf dem Deck (1c) der Stütze (1) in der Nähe einer Außenwand (1d) der Stütze (1) liegt oder mit dieser verbunden ist, wobei die erste Tragstruktur (5) eine Vielzahl von drehbaren kreisförmigen Platten (4-1) trägt, die übereinander angeordnet sind,
    - wobei jede drehbare Platte (4-1, 4a, 4b, 4c) geeignet ist, in Drehung auf motorisierte Weise durch einen ersten Motor (6) entlang einer vertikalen Zentralachse (ZZ'), vorzugsweise entlang einer selben vertikalen Zentralachse (ZZ'), unabhängig voneinander angetrieben zu werden, wobei jede drehbare Platte eine Mittelöffnung (4-2) umfasst, über der ein zentraler Schaft (4-3) montiert ist, gegen und um den eine flexible Leitung (3, 3a, 3b, 3c) in konzentrischen nebeneinander liegenden Spiralen mit zunehmenden Durchmessern, die auf der Oberseite (4-1 a) der Platte liegt, gewickelt werden kann, wobei die Mittelöffnung (4-2) der drehbaren Platte mit einem Drehringanschluss (7) ausgestattet ist, der geeignet ist, den Anschluss zwischen einerseits einem ersten Ende (3-1), das dem zentralen Schaft einer um den zentralen Schaft gewickelten flexiblen Leitung am nächsten ist, wobei das erste Leitungsende (3-1) geeignet ist, in Drehung mit der drehbaren Platte angetrieben zu werden, und andererseits einem Ende (8-1) einer festen Transferleitung (8) zu ermöglichen, deren anderes Ende mit mindestens einem ersten Behälter (11) innerhalb der Stütze (1) in Kontakt ist, und
    - mehrere Führungsmittel (10, 10a, 10b, 10c), wobei jedes Führungsmittel geeignet ist, den Abschnitt der Leitung am Ausgang (3-2) jeweils jeder drehbaren Platte in Kontinuität mit dem auf die Platte gewickelten Leitungsabschnitt zu führen, so dass die verschiedenen Leistungsabschnitte am Ausgang (3-2) der verschiedenen drehbaren Platten gerade, an verschiedenen Positionen in eine Horizontalrichtung (Y1Y'1) parallel zur Außenwand versetzt, in verschiedenen Höhen angeordnet sind und eine Neigung (α1, α2, α3) ihrer verschiedenen vertikalen Axialebenen (P1, P2, P3) in Bezug zur Horizontalrichtung (Y1Y'1) parallel zur Außenwand (1d) annehmen können.
  2. Stütze (1) nach Anspruch 1, dadurch gekennzeichnet, dass mindestens eine flexible Leitung (3) gegen und um einen zentralen Schaft (4-3) in nebeneinander liegenden konzentrischen Spiralen mit zunehmenden Durchmessern, die auf der drehbaren Platte (4-1) liegen, gewickelt ist, wobei der zentrale Schaft einen größeren Radius als der minimale Krümmungsradius der flexiblen Leitung aufweist, wobei mindestens 3 flexible Leitungen auf jeweils mindestens 3 der drehbaren Platten gewickelt sind, wobei mindestens eine flexible Leitung einen kleineren Durchmesser als die anderen hat.
  3. Stütze (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass jedes Führungsmittel in einer unterschiedlichen Höhe gegenüber jeweils jeder drehbaren Platte angeordnet ist, um geeignet zu sein, einen gekrümmten Leitungszwischenabschnitt (3-3) zwischen einem stromabwärtigen Abschnitt (3-4) einer Leitung in im Wesentlichen vertikaler Position entlang der Außenwand (1d) und einem stromaufwärtigen Abschnitt einer Leitung am Plattenausgang (3-2) in Kontinuität mit dem auf einer drehbaren Platte liegenden aufgewickelten Leitungsabschnitt zu tragen, wobei sich der stromaufwärtige Leitungsabschnitt (3-2) am Plattenausgang auf einer virtuellen Ebene (P) im Wesentlichen die Oberfläche oder oberen Seite (4-1 a) der Platte, auf die der aufgewickelte Leitungsabschnitt gewickelt ist, tangierend erstreckt, wobei die verschiedenen stromabwärtigen Leitungsabschnitte (4-4) in im Wesentlichen vertikaler Position entlang der Außenwand in zueinander versetzter Position in eine Richtung (Y2Y'2) parallel zur Außenwand am Ausgang der Rollen angeordnet sind.
  4. Stütze nach Anspruch 3, dadurch gekennzeichnet, dass jedes Führungsmittel (10) eine Rolle (10-1) mit einer Horizontalachse (Y1Y'1) mit einer ersten Drehung um sich selbst umfasst, wobei die Rolle ferner geeignet ist, sich in einer zweiten Drehung in Bezug zu einer Vertikalachse (Z1Z'1), die durch einen Durchmesser der Rolle verläuft, zu bewegen, wobei die erste Drehung jeder Rolle um sich selbst von einem zweiten Motor (10-6) gesteuert wird, der mit dem ersten Motor (6) jeder Platte (4-1) synchronisiert ist.
  5. Stütze (1) nach Anspruch 4, dadurch gekennzeichnet, dass die verschiedenen Rollen (10a, 10b, 10c) versetzt nebeneinander in Horizontalrichtung (Y1Y'1) parallel zu der Außenwand in unterschiedlichen Höhen angeordnet sind, wobei der obere Punkt jeder Rolle im Wesentlichen im Bereich einer Ebene (P), die die obere Seite (4-1 a) einer drehbaren Platte (4-1) tangiert, positioniert ist.
  6. Stütze nach Anspruch 5, dadurch gekennzeichnet, dass jede Rolle von einer zweiten Tragstruktur (10-2) getragen wird, die außerhalb der Stütze angeordnet und an einer selben Außenwand (1d) in einer unterschiedlichen Position in einer Horizontalrichtung (Y1Y'1) parallel zu der Außenwand befestigt ist, wobei jede Rolle in zweiter Drehung mit einer Vertikalachse (Z1Z'1) in Bezug zu einem Teil (10-4, 10-5) ihrer zweiten, an der Außenwand (1d) befestigten Tragstruktur angelenkt ist.
  7. Stütze (1) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass jede Platte (4-1) an der Unterseite Kugelrollen (4-5) umfasst oder mit solchen zusammenwirkt, die geeignet sind, mit Elementen (5a) der Tragstruktur zusammenzuwirken bzw. von ihnen getragen werden, und dass jede drehbare Platte im Bereich der Mittelöffnung ein Lager (4-4) umfasst, das mit der ersten Tragstruktur (5) verbunden und geeignet ist, die Drehung der Platte in relativer Drehung in Bezug zur ersten Tragstruktur (5) zu ermöglichen.
  8. Stütze (1) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass mindestens eine drehbare Platte (4-1 d) eine horizontale ebene obere Seite (4-1 a) aufweist.
  9. Stütze (1) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass mindestens eine drehbare Platte (4-1 c) eine obere Seite von konvexer kegelstumpfartiger Form, vorzugsweise mit einem Winkel an der Spitze Y von 160 bis 178°, aufweist.
  10. Stütze (1) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass mindestens eine drehbare Platte (4-1 b) eine obere Seite (4-1 a) von konkaver kegelstumpfartiger Form, vorzugsweise mit einem Winkel an der Spitze Y von 160 bis 178°, aufweist.
  11. Stütze (1) nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass sie mit einer Vielzahl von n flexiblen Leitungen (3a, 3b, 3c) ausgestattet ist, die jeweils mit einer drehbaren Platte an ihren ersten Enden (3-1) zusammenwirken, wobei die flexiblen Leitungen an ihren zweiten Enden (3-6) durch eine erste Anschluss- und Ventilvorrichtung (13-1), umfassend n erste, vorzugsweise starre Leitungsabschnitte (21 a, 21 b, 21 c) zusammengefügt sind, die in fester relativer Position zueinander gehalten werden, wobei n eine ganze Zahl mindestens gleich 3 ist, wobei jeder erste Leitungsabschnitt (21 a, 21 b, 21 c) umfasst:
    - an einem ersten Ende ein erstes Leitungsanschlusselement (23-1 a, 23-1 b, 23-1 c), und
    - an seinem zweiten Ende ein zweites Anschlusselement, das mit dem zweiten Ende (3-6) einer flexiblen Leitung zusammengefügt ist, und
    - wobei jeder erste Leitungsabschnitt (21 a, 21 b, 21 c) zwischen seinen beiden Enden (n-1) Abzweigungen (30) umfasst, die die Verbindung mit jeweils einer der (n-1) anderen ersten starren Leitungsabschnitte ermöglicht, wobei jede Abzweigung (30) ein erstes Verbindungsventil (30ab, 30bc, 30ac) umfasst, und
    - ein erstes Anschlussventil (22a, 22b, 22c), das sich zwischen dem ersten Anschlusselement (23-1 a, 23-1 b, 23-1 c) und der Abzweigung (30) befindet,
    - wobei die ersten Leitungsabschnitte durch eine erste starre Stütze (24), mit der sie verbunden sind, gehalten werden.
  12. Stütze (1) nach Anspruch 11, dadurch gekennzeichnet, dass sich die flexiblen Leitungen zwischen der Stütze (1) und einem Schiff (2) erstrecken oder geeignet sind, sich zu erstrecken, welches sich in Paar- oder Tandemanordnung neben der Stütze (1, 1-1, 1-2) gegenüber der Außenwand (1d) befindet, und dass die erste Anschluss- und Ventilvorrichtung (13-1) an eine zweite Anschluss- und Ventilvorrichtung (13-2) angeschlossen ist, die an Bord des Schiffes (2) angeordnet ist oder geeignet ist, angeordnet zu werden, wobei die zweite Anschluss- und Ventilvorrichtung (13-2) umfasst:
    - n zweite starre Leitungsabschnitte (26a, 26b, 26c),
    - wobei jeder zweite Leitungsabschnitt (26a, 26b, 26c) an einem seiner Enden mit einem zweiten Behälter (12) in Verbindung ist und an seinem anderen Ende ein erstes komplementäres Leitungsanschlusselement (23-2a, 23-2b, 23-2c) umfasst, wobei das erste komplementäre Anschlusselement geeignet ist, mit einem reversiblen Anschluss (23) mit einem ersten Anschlusselement (23-1 a, 231 b, 23-1 c) zusammenzuwirken,
    - wobei die zweiten Leitungsabschnitte (26a, 26b, 26c) in fester relativer Position zueinander parallel gehalten werden, um den Anschluss der ersten komplementären Anschlusselemente (23-2a, 23-2b, 23-2c) mit den ersten Anschlusselementen (23-1a, 23-1 b, 23-1 c) zu ermöglichen,
    - wobei jeder zweite Leitungsabschnitt (26a, 26b, 26c) ein zweites Anschlussventil (27a, 27b, 27c) umfasst, das geeignet ist, die Fluidzirkulation in dem zweiten Leitungsanschluss zu oder von dem ersten komplementären Anschlusselement, wenn es offen bzw. geschlossen ist, zu gestatten oder zu verhindern,
    - wobei die zweiten Leitungsabschnitte durch eine zweite starre Stütze (25), mit der sie verbunden sind, zueinander parallel gehalten werden.
  13. Verfahren zum Transfer eines flüssigen oder gasförmigen Erdölproduktes, bei dem ein Erdölprodukt in mindestens zwei flexiblen Leitungen (3, 3a, 3b, 3c) weitergeleitet wird, die sich zwischen einer Stütze (1) nach einem der Ansprüche 1 bis 12 und einem Schiff (2) erstrecken, welches in Paar- oder Tandemanordnung neben der schwimmenden Stütze (1) gegenüber der Außenwand (1 d) angeordnet ist, wobei die flexiblen Leitungen (3) mit Hilfe einer Vorrichtung zur Lagerung und Führung (4) geführt werden.
  14. Verfahren nach Anspruch 13, dadurch gekennzeichnet, dass die flexiblen Leitungen schwimmende Leitungen sind, die an der Oberfläche auf einem Teil (3-5) der Distanz zwischen der Stütze (1) und dem Schiff (2) schwimmen.
  15. Verfahren nach Anspruch 13 oder 14, dadurch gekennzeichnet, dass es an mindestens zwei ersten und zweiten flexiblen Leitungen (3b, 3c), in denen verflüssigtes Gas zwischen der schwimmenden Stütze und mindestens einem zweiten Behälter (12) des Schiffes (2) weitergeleitet wird, und einer dritten flexiblen Leitung (3a) mit einem kleineren Durchmesser als jener der ersten und zweiten flexiblen Leitungen, in der Gas entsprechend der Gasphase des zweiten Behälters von einem zweiten Behälter (12) zu einem ersten Behälter innerhalb der schwimmenden Stütze oder einer Einheit zur Verflüssigung (1 b) auf einer Stütze vor der Weiterleitung zu einem ersten Behälter (11) weitergeleitet wird, eingesetzt wird.
  16. Verfahren nach einem der Ansprüche 13 bis 15, dadurch gekennzeichnet, dass die flexiblen Leitungen mit einer ersten Anschluss- und Ventilvorrichtung (13-1), wie in Anspruch 11 definiert, ausgestattet sind, die an eine zweite Anschluss- und Ventilvorrichtung (13-2), wie in Anspruch 12 definiert, angeschlossen ist, wobei die flexiblen Leitungen schwimmende flexible Leitungen sind, und dass die Reinigung der flexiblen Leitungen (3b, 3c), die zur Weiterleitung des verflüssigten Gases GNL von der Stütze (1) zu einem Schiff (2) gedient haben, durch Ausführung der folgenden aufeinanderfolgenden Schritte erfolgt, bei denen:
    a. Schließen der ersten und zweiten Anschlussventile (22a-22b-22c, 27a-27b-27c) und trennen der ersten und zweiten Anschluss- und Ventilvorrichtungen (13-1, 13-2) voneinander, und
    b. Einspritzen von Gas am ersten Ende (3-1) einer ersten flexiblen Leitung (3b) von der Stütze (1) aus und Öffnen mindestens eines ersten Verbindungsventils (30bc) zwischen der ersten flexiblen Leitung (3b) und einer zweiten flexiblen Leitung (3c), die mit derselben ersten Anschluss- und Ventilvorrichtung (13-1) verbunden ist, wobei die anderen ersten Verbindungsventile (30ac, 30ab) geschlossen sind, dann
    c. Schließen des ersten Verbindungsventils (30bc) zwischen den ersten und zweiten flexiblen Leitungen (3b, 3c), wenn die erste Leitung (3b) ausreichend entleert ist.
  17. Verfahren nach Anspruch 16, dadurch gekennzeichnet, dass nach dem Schritt c) die zweite Leitung (3c) vollständig gereinigt wird, wobei die folgenden zusätzlichen Schritte durchgeführt werden:
    d. Einspritzen von Gas von der Stütze (1) aus in das erste Ende (3-1) der zweiten Leitung (3c) und Öffnen des ersten Verbindungsventils (30ac) zwischen der zweiten Leitung (3c) und einer dritten flexiblen Leitung (3a) mit einem kleineren Durchmesser als die zweite Leitung, so dass die Reinigungsgasmenge derart ist, dass die Geschwindigkeit des Gases größer als 1,5m/s ist, wobei die anderen ersten Verbindungsventile (30ab, 30bc) geschlossen sind, und
    e. Schließen des ersten Verbindungsventils (30ac) zwischen den zweiten und dritten Leitungen (3c, 3a), wenn die zweite Leitung (3c) ausreichend entleert ist.
  18. Verfahren nach einem der Ansprüche 16 oder 17, dadurch gekennzeichnet, dass, wenn alle flexiblen Leitungen ausreichend gereinigt sind, die flexiblen Leitungen wieder auf ihre drehbaren Platten gewickelt werden, bis die zweiten Enden (3-6) der Gesamtheit der flexiblen Leitungen über Wasser sind.
  19. Verfahren nach Anspruch 18, dadurch gekennzeichnet, dass die erste Leitung (3b) auf eine konvexe drehbare Platte, wie in Anspruch 9 definiert, gewickelt wird.
  20. Verfahren nach einem der Ansprüche 18 oder 19, dadurch gekennzeichnet, dass mindestens eine der beiden zweiten und dritten flexiblen Leitungen (3c, 3a), die für den Flüssigkeitstransport verwendet werden, auf eine kegelstumpfartige Platte von konkaver Form wie in Anspruch 10 definiert, gewickelt wird.
EP11787889.2A 2010-11-30 2011-11-24 Marine halterung mit einer vorrichtung zur aufbewahrung und führung von schläuchen Active EP2646725B1 (de)

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PCT/EP2011/070967 WO2012072497A1 (fr) 2010-11-30 2011-11-24 Support en mer equipe d'un dispositif de stockage et de guidage de conduites flexibles.

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FR2967990B1 (fr) * 2010-11-30 2014-11-28 Saipem Sa Support installe en mer equipe d'un dispositif de connexion et de vannes utile pour la purge de conduites flexibles
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US9308972B2 (en) 2016-04-12
CN103228969B (zh) 2015-10-14
FR2968058B1 (fr) 2012-12-28
MY180266A (en) 2020-11-26
JP5632094B2 (ja) 2014-11-26
KR20140074862A (ko) 2014-06-18
KR101582393B1 (ko) 2016-01-04
EP2646725A1 (de) 2013-10-09
AU2011335204B2 (en) 2015-05-21
CN103228969A (zh) 2013-07-31
BR112013012560A2 (pt) 2016-08-09
FR2968058A1 (fr) 2012-06-01
RU2013120142A (ru) 2015-01-10
RU2570790C2 (ru) 2015-12-10
JP2014504227A (ja) 2014-02-20
BR112013012560B1 (pt) 2020-11-17
US20140301807A1 (en) 2014-10-09
AU2011335204A1 (en) 2013-06-06

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