WO2000078603A1 - Dispositif permettant d'entreposer un tuyau de chargement dans une masse d'eau et procede de transfert de ce tuyau de la position d'entreposage a la position de mise en service - Google Patents

Dispositif permettant d'entreposer un tuyau de chargement dans une masse d'eau et procede de transfert de ce tuyau de la position d'entreposage a la position de mise en service Download PDF

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Publication number
WO2000078603A1
WO2000078603A1 PCT/NO2000/000217 NO0000217W WO0078603A1 WO 2000078603 A1 WO2000078603 A1 WO 2000078603A1 NO 0000217 W NO0000217 W NO 0000217W WO 0078603 A1 WO0078603 A1 WO 0078603A1
Authority
WO
WIPO (PCT)
Prior art keywords
hose
weight
coupling
tanker
seabed
Prior art date
Application number
PCT/NO2000/000217
Other languages
English (en)
Inventor
Arild K. Samuelsen
Original Assignee
Navion Asa
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Navion Asa filed Critical Navion Asa
Priority to AU52572/00A priority Critical patent/AU5257200A/en
Publication of WO2000078603A1 publication Critical patent/WO2000078603A1/fr

Links

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 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/24—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/12—Laying or reclaiming pipes on or under water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/12—Laying or reclaiming pipes on or under water
    • F16L1/20—Accessories therefor, e.g. floats, weights
    • F16L1/24—Floats; Weights

Definitions

  • Equipment for storage of a loading hose in a body of water and method of transferring the hose from the storage position to a position of use
  • the invention relates to an equipment for storage of a loading hose in a body of water, wherein the hose has a specific gravity which is less than one. Further, the invention relates to a method for transferring a loading hose from a submerged storage position to a position of use in which the hose forms a load-transferring connection between a loading and an unloading unit, for example two tankers.
  • tanker transport is an alternative to transport via pipe connections.
  • a specially constructed shuttle tanker which thereafter brings the load to a place where it is transferred to a conventional barging vessel transporting the load to a receiver.
  • a conventional tanker the barging vessel
  • the transport costs can be reduced significantly if the transport is based on conventional tankers instead of only the use of special ships.
  • loading hoses typically with a diameter of 20 - 24 inches and a length of 250 - 400 meters.
  • the object of the invention is to provide an equipment enabling a safe and lenient underwater storage of a loading hose of the above-mentioned type, and allowing a safe and rational transfer of oil between a loading and an unloading unit in open sea during changing weather conditions with the highest possible continuity.
  • Another object of the invention is to provide a method for rational and safe transfer of such a loading hose from the storage position to its position of use.
  • an equipment of the stated type which is characterized by the characterizing features according to claim 1.
  • a loading hose is kept stored in a body of water without the "soft" floating parts of the hose coming into contact with the sea or ocean floor. Further, the hose is protected in relation to vessels operating in the area.
  • the equipment and the method may be used on all the relevant water depths.
  • FIG. 1 shows a loading hose which is stored on the bottom under a body of water by means of an equipment according to the invention
  • Fig. 2 shows a longitudinal section of a hose segment forming part of an embodiment of the loading hose
  • Fig. 3 shows the detail A in Fig. 1 on an enlarged scale, i.e. a side view of an embodiment of a weight/scrubbing link
  • Fig. 4 shows the detail B in Fig. 1 on an enlarged scale, i.e. a side view of a first embodiment of a combined coupling/weight unit;
  • Fig. 5 shows the detail C in Fig. 1 on an enlarged scale, i.e. a side view of a second embodiment of a combined coupling/weight unit;
  • Fig. 6 shows an end view of the coupling/weight unit in Fig. 5;
  • Fig. 7 shows picking-up of a loading hose directly from a shuttle tanker;
  • Fig. 8 shows picking-up of the loading hose by means of a tender;
  • Fig. 9 shows raising of the loading hose from the seabed by the use of tender and shuttle tanker;
  • Fig. 10 shows the hose hanging between shuttle tanker and tender
  • Fig. 11 shows a barging vessel and a shuttle tanker coupled to each other via the loading hose
  • Fig. 12 illustrates the rotary circle of the barging vessel in relation to the position of me shuttle tanker during load transfer
  • Fig. 13 shows disconnection of the loading hose from the shuttle tanker and lowering of the hose after completed load transfer
  • Fig. 14 shows picking-up of the loading hose directly from a shuttle tanker, wherein the hose is in an intermediate storage position.
  • Fig. 1 shows a hose 1 which is stored in an underwater position in a body of water 2 by means of an equipment according to the invention.
  • the equipment comprises, inter alia, a pair of combined coupling and weight units 3 and 4, respectively, which are connected to a respective end of the hose 1 and which are further shown in Fig. 4 and Figs. 5-6, respectively.
  • the equipment comprises a weight/scrubbing link 5 which is mounted on the hose 1 at a middle portion thereof, and which is further shown in Fig. 3.
  • each of the coupling/weigh units 3, 4 rest on the seabed 6, and the same is the case with the weight/scrubbing link 5.
  • each of the coupling/weight units 3, 4 is connected to one or a lower end of a respective handling line 7, the other or upper end of each handling line being connected to a buoy means 8 having a suitable buoyancy to keep itself floating on the surface 9 of the water or at a chosen distance below the surface.
  • each of the buoy means 8 comprises a pair of buoyancy buoys 10 which, through a shackle/swivel unit 11, are connected to a marking buoy (e.g. a light buoy) 12 floating on the water surface, and to which there is fixed one end of a floating line 13 which, at its opposite end, and possibly also at an intermediate place, is connected to a smaller marking buoy 14.
  • a marking buoy e.g. a light buoy
  • the used loading hose 1 suitably consists of a plurality of segments.
  • An embodiment of such a segment 20 is shown in Fig. 1.
  • the segment is provided with end flanges 21, e.g. bolt flanges, for interconnection of adjoining segments, and is formed from an inner hose wall 22 which is covered by an outer layer 23 of the buoyancy material.
  • the hose wall for example may consist of rubber, and the outer layer may consist of a suitable plastic material, e.g. polyester.
  • the buoyancy is determined by the relevant water depth, the length of the hose and the utilized anchoring weights.
  • Each segment may have a length of 12 meters.
  • Fig. 3 shows the detail A in Fig. 1 on an enlarged scale and shows a side view of the weight/scrubbing link 5.
  • this link or element consists of an arcuate pipe piece 24 which is provided with end flanges 25 for connection to corresponding end flanges 21 on adjoining ends of the hose 1.
  • the pipe piece 24 may consist of a steel tube having a reinforced wall, to stand scrubbing and other influence from the environment. It may suitably have an internal diameter corresponding to the hose diameter, typically 20 - 24 inches, and may then suitably have an internal radius of curvature of about 6 m.
  • a weight element 26 in the form of a chain is attached to the pipe piece. Several weight elements may be attached to the pipe piece, according to requirement.
  • a hydroacoustic transponder or position transmitter 27 is fixed to the pipe element. The purpose of this position transmitter will be further described below.
  • Fig. 4 shows the detail B in Fig. 1 on an enlarged scale and shows a side view of the coupling/weight unit 3.
  • the unit comprises an end piece in the form of a distance and coupling piece 28 having a suitable flange 29 for connection to a pipe system on a vessel.
  • a blind flange 30 to which there is fixed a chain length 31 for connection to the handling line 7 according to Fig. 1.
  • the chain length possibly may be replaced by a lifting bridle, as shown in Figs. 5 and 6.
  • a valve unit 32 in the form of a manually operated ball valve which may be opened and closed by means of a detachable handwheel 33.
  • the hose may be used two coupling/weight units instead of the single unit 3 in Fig. 4.
  • the hose then will be branched off via a branch pipe to two end portions, for example having an internal diameter of 12 - 16 inches when it is the question of a hose having a diameter of 20 - 24 inches, whereby these end portions will be connected to associated end pieces and valves having detachable handwheels, in a corresponding manner as shown in Fig. 4.
  • the unit 3 is also provided with a hydroacoustic transponder or position transmitter 34 of a corresponding type and for a corresponding purpose as the position transmitter 27 for the weight/scrubbing link 5.
  • the illustrated embodiment of the coupling/weight unit 3 is intended for connection of the hose to a conventional tanker.
  • the coupling piece 28 will be designed as, or be provided with, a weight means having a sufficient weight to keep the hose end in question stably in place at the seabed when the hose is in the storage position according to Fig. 1.
  • the coupling piece 28 may be provided with a weight unit in the form of an outer protecting casing, in a corresponding manner as in the embodiment according to Figs. 5-6.
  • Figs. 5 and 6 show the detail C in Fig. 1 on an enlarged scale and show a side view and a front view, respectively, of the coupling/weight unit 4.
  • This unit comprises a hose end piece 38 which is intended for connection to a shuttle tanker.
  • the end piece is provided with a protecting casing 39 which partly encloses the end piece, and which has a sufficient weight to keep the hose end stably in place on the seabed in the storage position according to Fig. 1.
  • the casing 39 will be provided with a sparkless surface.
  • the end piece 38 is connected to the adjoining end of the hose 1 via a swivel unit 40. Further, to the end piece there are attached a pair of oppositely directed arms 41 to which there is attached a lifting bridle 42 for connection to the handling line 7 in question in Fig. 1 via a shackle 43.
  • the unit 4 is also provided with a hydroacoustic transponder or position transmitter 44 of a corresponding type and for a corresponding purpose as the transponders 27 and 34.
  • the coupling/weight units 3 and 4 attached at each end of the hose and the middle weight link 5 ensure that the hose 1 is kept in place in its storage position at the seabed.
  • the distance between these three anchor points 3, 4, 5 takes part in determining the geometry of the hose under water. In the stored position the hose will be liquid-filled, so that it is not squeezed by the water pressure. Because of its buoyancy, the hose between the end couplings and the weight link will assume a curved shape upwards in the body of water, so that it assumes a sinus-like shape in the storage position.
  • the loading and unloading units consist of two tankers, more specifically a loading unit in form of a conventional barging vessel or tanker, and an unloading unit in the form of a shuttle tanker, the shuttle tanker coming from the field with a load which is to be transferred to the tanker.
  • the first step of the method consists in that the upper end of one of the two handling lines is hoisted up and brought on board the shuttle tanker, whereafter the handling line is winched in and the hose end coupling connected to the line is coupled to the pipe system of the shuttle tanker.
  • This step may be carried out either with or without the use of a tender.
  • Fig. 7 shows a shuttle tanker 46 carrying out picking-up of the loading hose 1 directly, without the use of a tender. Such an operation presupposes good weather conditions. In this case, a grapnel with a shooting line is shot over the floating line 13, as illustrated with the arrow A ]?
  • the handling line 7 is winched in, and the end coupling of the hose, i.e. the coupling/weight unit 4, is connected to the bow coupling of the shuttle tanker which is connected to the pipe system for loading/unloading.
  • a tender 47 when picking up the loading hose 1.
  • the floating line 13 and the buoys 12 and 14 are picked up by the tender, and the buoys are released and placed on the deck of the tender, to be able to be transferred to the shuttle tanker later if this wants to have the possibility to disconnect itself from the buoy without assistance of the tender (see Fig. 13).
  • the tender moves to the side of the shuttle tanker 46 and "shoots" the handling line 7 over to the shuttle tanker by means of an airgun, as illustrated with the arrow A 2 .
  • the handling line is winched in, and the hose end coupling is connected to the bow coupling of the shuttle tanker.
  • the end of the other handling line 7 is taken on board the tender 47, in a manner corresponding to that described above.
  • the tender thereafter uses the handling line to lift the hose end coupling 3 and the weight link 5 up from the sea or ocean bed.
  • the hose 1 then hangs between the shuttle tanker and the tender, clear of the ocean bed. This situation is shown in Fig. 9.
  • the hose 1 is towed by means of the tender 47 to the place of the other tanker, the shuttle tanker 46 following at a suitable distance from the tender.
  • Fig. 10 wherein the tender approaches the other tank ship 48 which is presupposed to be a conventional tanker.
  • the tender winches in the hose end piece 3 by means of the handling line, so that the chain or wire bridle 31 of the end piece can be reached from the deck of the tender.
  • the end piece 3 then is located just aft of the stern of the tender.
  • a messenger line from a midship crane 49 on the tanker 48 is received on board the tender, and the crane hook is lowered down so that the wire bridle of the end piece may be attached thereto.
  • the hose is thereafter lifted onto the deck of the tanker and coupled to one or two of the manifold pipes 50 of the ship. This situation is shown in Fig. 11.
  • the topical load can now be transferred from one vessel to the other.
  • a pair of stabilizing lines 51 suitably may be attached to the hose 1 at a distance of about 10 - 12 m from the hose end piece, and these are attached in a suitable manner to the deck of the tanker 48 on each side of the hose when this is attached to the manifold pipe 50, as suggested in Fig. 11. In this manner the hose is secured, inter alia, against unintended, horizontal and vertical movements because of the influence of the sea, both in the critical connecting phase and during the load transfer operation.
  • the tanker 48 is anchored by means of an anchor system 52 which is connected to the bow of the tanker.
  • the anchoring system normally will be arranged so that the vessel can turn freely with the bow against the weather, so that its stern will follow a rotary circle C, as shown in Fig. 12.
  • the shuttle tanker When the hose 1 is connected as described above, the shuttle tanker, by the use of its dynamic positioning system (DP), will position itself at a distance and in a direction from the tanker agreed to in advance, so that the hose lies in a best possible and suitable depth and direction between the two vessels. The DP system then will see to it that the shuttle tanker at any time keeps itself at a definite distance and direction from the tanker during the transfer of the load from the shuttle tanker, as shown in Fig. 12. By means of the used weight link 5, the hose will hang approximately vertically in the sea, and consequently will not be so exposed to wind and waves as a hose floating at the surface.
  • DP dynamic positioning system
  • both the weight line 5 and the coupling/weight units 3 and 4 are equipped with respective position-giving transponders 27, 34 and 44.
  • the purpose of these is to "communicate" with the shuttle tanker 46 and the tender 47, so that these may have indicated the accurate position of the hose and the hose end pieces.
  • the tanker 48 when required, may get information about the position of the hose during a load transfer operation.
  • the position indication of the hose will be a vital information in connection with picking-up of the hose, and also for other marine traffic (trawlers etc.).
  • the shuttle tanker 46 disconnects itself from the hose, and while the shuttle tanker goes slowly aftwards, it lays the hose carefully down onto the seabed 6 by means of the handling line 7, as shown in Fig. 13.
  • the hose 1 will now lie connected to the tanker 48 with the weight/scrubbing link 5 and the coupling/weight unit 4 laying on the seabed at a mutual distance causing the intermediate part of the hose 1 to assume an arcuate shape upwards in the body of water.
  • This situation is shown in Fig. 14.
  • this can, if allowed by the weather, shoot a grapnel (not shown) over the floating line 13 (as illustrated with the arrow A 3 ) and haul this up on the deck so that the handling line 7 may be used to winch in the hose end piece and couple this to the bow coupling of the shuttle tanker. If the weather does not allow the shuttle tanker itself to pick up the floating line and the handling line, this operation will be carried out means of the tender 47.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Pipeline Systems (AREA)

Abstract

L'invention concerne un dispositif permettant d'entreposer un tuyau de chargement (1) dans une masse d'eau (2), ce tuyau possédant une gravité spécifique inférieure à un et ce dispositif comprenant des unités d'accouplement et de poids (3, 4) reliées à une extrémité respective du tuyau (1) et conçues pour reposer au fond de la mer (6). Chacune de ces unités (3, 4) comporte un raccord d'extrémité servant à effectuer un accouplement avec un système de conduits sur un navire, ainsi qu'un système de poids suffisamment lourds pour maintenir la stabilité de la position de l'extrémité du tuyau au fond de la mer (6), une conduite de poids et de lavage (5) montée dans une zone médiane du tuyau et une paire de lignes de manipulation (7) accouplées par une extrémité à une extrémité respective des unités d'accouplement et de poids (3, 4) et accouplées par l'autre extrémité à des moyens de flottaison (8) situés à la surface de l'eau. En service, les unités d'accouplement et de poids (3, 4) et la conduite de poids et de lavage (5) sont placées au fond de la mer (6) à distance les unes des autres, de sorte que les parties intermédiaires du tuyau (1) se relèvent telles qu'un arc, sous l'effet de leur flottaison, dans la masse d'eau (2). L'invention concerne également un procédé de transfert de ce tuyau de chargement (1) depuis une position d'entreposage submergée jusqu'à une position de mise en service dans laquelle le tuyau de chargement permet de créer une liaison de transfert de charge entre, par exemple, deux navires pétroliers.
PCT/NO2000/000217 1999-06-23 2000-06-22 Dispositif permettant d'entreposer un tuyau de chargement dans une masse d'eau et procede de transfert de ce tuyau de la position d'entreposage a la position de mise en service WO2000078603A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU52572/00A AU5257200A (en) 1999-06-23 2000-06-22 Equipment for storage of a loading hose in a body of water, and method of transferring the hose from the storage position to a position of use

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO19993130A NO311295B1 (no) 1999-06-23 1999-06-23 Utrustning for lagring av en lasteslange i en vannmasse, og fremgangsmåte ved overföring av slangen fra lagringsstillingen tilen bruksstilling
NO19993130 1999-06-23

Publications (1)

Publication Number Publication Date
WO2000078603A1 true WO2000078603A1 (fr) 2000-12-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2000/000217 WO2000078603A1 (fr) 1999-06-23 2000-06-22 Dispositif permettant d'entreposer un tuyau de chargement dans une masse d'eau et procede de transfert de ce tuyau de la position d'entreposage a la position de mise en service

Country Status (3)

Country Link
AU (1) AU5257200A (fr)
NO (1) NO311295B1 (fr)
WO (1) WO2000078603A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1784598A1 (fr) * 2004-08-16 2007-05-16 Deepflex, Inc. Caténaire légère
WO2010030160A1 (fr) * 2008-09-09 2010-03-18 Misc Berhad Système de transfert de conduite fond marin-surface en mer
FR2945510A1 (fr) * 2009-05-13 2010-11-19 Eurodim Sa Procede de transfert de fluides entre un premier navire et un deuxieme navire et systeme de transfert pour la mise en oeuvre de ce procede.
DE102017117045A1 (de) * 2017-07-27 2019-01-31 "Agru" Kunststofftechnik Gesellschaft M.B.H. Schwimmfähige Rohrzusammenstellung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2250253A (en) * 1990-11-22 1992-06-03 Earl & Wright Ltd Mooring arrangement for production loading system
US5944448A (en) * 1996-12-18 1999-08-31 Brovig Offshore Asa Oil field installation with mooring and flowline system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2250253A (en) * 1990-11-22 1992-06-03 Earl & Wright Ltd Mooring arrangement for production loading system
US5944448A (en) * 1996-12-18 1999-08-31 Brovig Offshore Asa Oil field installation with mooring and flowline system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1784598A1 (fr) * 2004-08-16 2007-05-16 Deepflex, Inc. Caténaire légère
EP1784598A4 (fr) * 2004-08-16 2010-11-03 Deepflex Inc Caténaire légère
WO2010030160A1 (fr) * 2008-09-09 2010-03-18 Misc Berhad Système de transfert de conduite fond marin-surface en mer
FR2945510A1 (fr) * 2009-05-13 2010-11-19 Eurodim Sa Procede de transfert de fluides entre un premier navire et un deuxieme navire et systeme de transfert pour la mise en oeuvre de ce procede.
WO2010130960A3 (fr) * 2009-05-13 2011-07-21 Société Européenne D'ingénierie Mécanique, Eurodim Procede de transfert de fluides entre un premier navire et un deuxieme navire et systeme de transfert pour la mise en oeuvre de ce procede
CN102548839A (zh) * 2009-05-13 2012-07-04 机械工程欧洲公司 用于在第一船和第二船之间运输流体的方法、及实施该方法的运输系统
RU2548306C2 (ru) * 2009-05-13 2015-04-20 Сосиете Еуропин Д'Инженири Меканик, Еуродим Способ транспортировки жидкостей между первым и вторым судном, и система транспортировки для осуществления указанного способа
US9260164B2 (en) 2009-05-13 2016-02-16 Societe Europeenne D'ingenierie Macanique—Eurodim Method for transferring fluids between a first ship and a second ship, and transfer system for implementing said method
DE102017117045A1 (de) * 2017-07-27 2019-01-31 "Agru" Kunststofftechnik Gesellschaft M.B.H. Schwimmfähige Rohrzusammenstellung
US11378217B2 (en) 2017-07-27 2022-07-05 Agru Kunststofftechnik Gesellschaft M.B.H. Floatable pipe combination
DE102017117045B4 (de) 2017-07-27 2023-02-02 "Agru" Kunststofftechnik Gesellschaft M.B.H. Schwimmfähige Rohrzusammenstellung

Also Published As

Publication number Publication date
NO311295B1 (no) 2001-11-12
NO993130D0 (no) 1999-06-23
AU5257200A (en) 2001-01-09
NO993130L (no) 2000-12-27

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