WO2010131965A2 - Système de came à deux étapes - Google Patents

Système de came à deux étapes Download PDF

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Publication number
WO2010131965A2
WO2010131965A2 PCT/NL2010/050280 NL2010050280W WO2010131965A2 WO 2010131965 A2 WO2010131965 A2 WO 2010131965A2 NL 2010050280 W NL2010050280 W NL 2010050280W WO 2010131965 A2 WO2010131965 A2 WO 2010131965A2
Authority
WO
WIPO (PCT)
Prior art keywords
mooring
vessel
arm
column
chains
Prior art date
Application number
PCT/NL2010/050280
Other languages
English (en)
Other versions
WO2010131965A3 (fr
Inventor
Pieter Liem
Jack Pollack
Sébastien Jean-François TRUCHI
Original Assignee
Single Buoy Moorings Inc.
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 Single Buoy Moorings Inc. filed Critical Single Buoy Moorings Inc.
Priority to GB1119731.6A priority Critical patent/GB2484018A/en
Priority to JP2012510768A priority patent/JP2012526702A/ja
Priority to US13/319,357 priority patent/US20120055388A1/en
Priority to AU2010248209A priority patent/AU2010248209A1/en
Priority to CN2010800212804A priority patent/CN102448809A/zh
Priority to BRPI1010552A priority patent/BRPI1010552A2/pt
Publication of WO2010131965A2 publication Critical patent/WO2010131965A2/fr
Publication of WO2010131965A3 publication Critical patent/WO2010131965A3/fr

Links

Classifications

    • 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
    • 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
    • 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
    • B63B21/508—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers with mooring turrets connected to submerged buoy
    • 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
    • B63B2021/001—Mooring bars, yokes, or the like, e.g. comprising articulations on both ends
    • B63B2021/002—Yokes, or the like
    • 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

Definitions

  • the present invention relates to an offshore system for mooring a vessel in a sea comprising: a vessel; a mooring column having a height and having an upper end and a lower end; a pivoting mooring arm coupling the upper end of said mooring column to said vessel for permitting the mooring column to rotate about a pair of horizontal axes relative to the vessel; a plurality of heavy chains having upper ends coupled to the lower end of said mooring column, said heavy chains extending in loose catenary curves to the sea floor and giving the restoring force required to keep the vessel moored once connected; the mooring column being free of attachment to any buoyant body, the system is self buoyant holds up the chains weight at the bottom and restrains the chains from drifting.
  • Hydrocarbons can be transferred from an undersea pipeline, such as one which leads to undersea wells, to tankers at the sea surface, by a variety of types of offshore terminals.
  • Under severe environmental conditions such as where there are intrusions of ice packs as well as severe storms, it is desirable to enable a tanker to disconnect from the terminal to sail away, while much of the terminal sinks a considerable depth below the sea surface to lie free of much of the severe environmental conditions.
  • One type of offshore terminal which can be used under these conditions includes a riser having a lower end that is loosely anchored to the sea floor, as through a group of catenary chains. The chains hold the riser deep under water but above the sea floor, while enabling the riser to be easily lifted up to the vessel. Improvements in such a system which facilitate connection of the top of the riser to the vessel and which provide improved mooring at minimal cost, one of considerable value.
  • a known system from The US Patent No.4, 645, 467 describes an offshore structure of a type which includes a riser that is loosely anchored as by chains, which can facilitate the dynamics of anchoring.
  • the riser In a detachable riser, the riser can be lifted until most of its height extends out of the sea and have a lower end that is weighted, to provide better mooring dynamics.
  • the weight can include a clump weight hanging from the lower end of the riser.
  • Another patent Re32,578 describes a mooring system comprising a floating device, chains for anchoring the floating device, said chains being connected to a body which is rotatable about a vertical axis on an arm attached to the floating device. Conduits extend through the body, from the sea bottom towards the floating device.
  • the patent focuses more particularly on the improvement in which the arm is rigidly attached to the floating device and the body comprises a buoy having its own buoyancy, which buoy can be connected to or disconnected from the arm via a quick connecting coupling comprising releasable locking means.
  • the present invention describes a two-step lifting of a mooring column during connection of the vessel via its mooring arm to the mooring column.
  • This 2 stage lifting during connection has the advantage of minimizing both the size and stiffness of the winching equipment. Should this lift be made entirely by the winching equipment (winch, line, sheaves, etc), this equipment would be large and negatively impact the geometry, physics and cost of the connection equipment. Making the initial lift short with low tension winching equipment, keeps the components small and results in a lower tension and stiffness for the lifting line which eases the initial connection.
  • the structural connection according to the present invention can handle large loads and thus the hydraulic lift system on the mooring arm is designed to lift the CAM to its highly tensioned moored operating position.
  • the offshore mooring system provides a pivoting arm and mooring arrangement where the arm reaching down and lifting up the mooring column is eased and does not require the use of an expensive and large-size winch.
  • the arm is mounted to allow it to be moved from an inboard position to its operating position projecting beyond the vessel's bow and hence prevents components from hanging over the bow and from potentially being damaged, partly by green water impact, while in transit.
  • Fig. Ia and Ib shows a detailed view of the mooring arm retractor mechanism.
  • Fig. 2 shows a three dimensional view of one possible embodiment the mooring arm rectractor mechanism according to the present invention.
  • Fig. 3 to 6 show the system according to the invention in different step of the connecting procedure
  • Fig. Ia and Ib show top views of the system according to the present invention.
  • the mooring arm 1 is mounted horizontally on a vessel 5 on bogie wheels/rails that allow it to be moved forward to its operating position projecting beyond the vessel's bow as shown in figure Ib.
  • the arm 1 is stowed and does not project beyond the vessel's bow 15 which prevents components from hanging over the bow and from potentially being damaged, partly by green water impact, while in transit.
  • Figure 2 shows a three-dimensional view of one possible embodiment of a mooring arm retractor mechanism according to the present invention.
  • a rack and pinion driving system 17,18 for the retraction and extension of the arm is shown.
  • Teeth 17 of a ranch of the pinion system are provided along the length of the arm 1 , whereas a toothed sprocket wheel 18 is provided on the box 3.
  • the pinion is driven by a hydraulic or electrical motor.
  • the rack and pinion restrict the arm 1 from accelerating due to dynamic motions of the vessel.
  • the sliding of the arm is done via friction pads 2 that are positioned inside a box type structure 3.
  • the box 3 will also function as a pivoting system to pivot the arm 1 down- and upwards, around axis 16.
  • the box 3 is hinged onto two supports 19 with shafts (not shown).
  • the arm 1 pivots around the axis 16 under the action of heavy duty hydraulic cylinders 4.
  • a mechanical locking system is activated in order to release the hydraulic pressure in the cylinders 4.
  • the cylinders 4 are provided with a mechanical failsafe system when failure occurs during operation.
  • the connection of the piping of the retractable arm 1 will be done with a spool piece that can retract and extend side ways. When the arm is extended the spool piece will extend and connected with a graylock to the export line on the arm.
  • FIG. 3 shows the vessel 5when the mooring arm 1 is moved forward along the rails 6 on deck and through a gate in the vessel's bow until the arm 1 projects to a pre-determined distance beyond the bow 15.
  • the export line on the arm is located inside the arm to avoid problems with the sliding box system.
  • FIG 4 shows the first connecting step, when the vessel 5 is in contact with the mooring column 8.
  • the mooring column 8 is a Counterweight Articulated Mooring (CAM) that comprises a slim structural riser column, floating vertically in the water with its upper end projecting above water and its lower end secured to the sea bed by mooring chains 9 in a catenary configuration.
  • CAM Counterweight Articulated Mooring
  • the first part of the system is connected to the mooring column 8 by means of a mechanical connector 7 with articulated joints to permit free weathervaning of the moored vessel as well as heave, pitch, surge, sway and roll motions of the vessel 5.
  • a piping system 10 is provided on both the arm 1 and the mooring column 8 to allow the transfer of natural gas (or other product) from the vessel's storage tanks to a seabed pipeline to shore, or, from a seabed pipeline into the vessel.
  • a pick-up line is lowered from the outward end of the mooring arm 1 for connection (by work boat) to a line 11 that is pre-attached to the top of the CAM column.
  • the mooring arm 1 is then articulated downwards using hydraulic rams at the vessel's deck such that the outward end of the arm 1 is close to the top of the mooring column.
  • Figure 5 shows the step further when the pick-up line has been pulled in to lift the mooring column top 12 into contact with the mechanical connector 7 and mooring arm 1 and mooring column 8 are connected together.
  • Figure 6 shows the ultimate step of the connection between the vessel and the mooring column.
  • the mooring arm 1 is articulated back up to a higher position (and not only back to horizontal) and the vessel is now safely moored to the mooring column 8.
  • the structural connection can handle large loads and thus the hydraulic lift system on the mooring arm 1 is designed to lift the column to its highly tensioned moored operating position.
  • the piping systems 10 of the mooring arm 1 and the mooring column 8 are connected and product may then be transferred from (or to) the vessel 5.
  • the piping systems are first flushed clean and disconnected.
  • the mooring arm is then pivoted back to its lower level and the mechanical connector is then released.
  • the vessel moves away from the mooring point.
  • the column 8 needs to have watertight compartments all along its length. Watertight compartments are accessible via a bolted flange access with a gasket in between the flanges.
  • a fender system may be installed around the top of the column 8 to allow a support vessel to moor onto the column and facilitating personnel intervention and maintenance.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Revetment (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Cultivation Of Seaweed (AREA)
  • Jib Cranes (AREA)

Abstract

L'invention porte sur un système de mouillage comprenant un navire et une colonne d'amarrage allongée comportant une extrémité supérieure reliée à un bras du navire faisant saillie à partir de l'étrave du navire, et une extrémité inférieure reliée au fond de la mer par l'intermédiaire d'une chaîne d'ancre, lequel système est caractérisé par le fait que le bras peut pivoter autour d'un axe transversal.
PCT/NL2010/050280 2009-05-12 2010-05-12 Système de came à deux étapes WO2010131965A2 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB1119731.6A GB2484018A (en) 2009-05-12 2010-05-12 2 Step cam system
JP2012510768A JP2012526702A (ja) 2009-05-12 2010-05-12 ２ステップｃａｍシステム
US13/319,357 US20120055388A1 (en) 2009-05-12 2010-05-12 2 step cam mooring system
AU2010248209A AU2010248209A1 (en) 2009-05-12 2010-05-12 Step CAM mooring system
CN2010800212804A CN102448809A (zh) 2009-05-12 2010-05-12 分步式cam系泊系统
BRPI1010552A BRPI1010552A2 (pt) 2009-05-12 2010-05-12 sistema de atração, e, método para atracar uma embarcação.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP09006397 2009-05-12
EP09006397.5 2009-05-12

Publications (2)

Publication Number Publication Date
WO2010131965A2 true WO2010131965A2 (fr) 2010-11-18
WO2010131965A3 WO2010131965A3 (fr) 2011-10-20

Family

ID=42562986

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2010/050280 WO2010131965A2 (fr) 2009-05-12 2010-05-12 Système de came à deux étapes

Country Status (7)

Country Link
US (1) US20120055388A1 (fr)
JP (1) JP2012526702A (fr)
CN (1) CN102448809A (fr)
AU (1) AU2010248209A1 (fr)
BR (1) BRPI1010552A2 (fr)
GB (1) GB2484018A (fr)
WO (1) WO2010131965A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3110689A4 (fr) * 2014-02-25 2017-10-11 Excelerate Energy Limited Partnership Collecteur courbé de transfert de gnl rétractable pour transferts de fret marin en tandem

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101633650B1 (ko) * 2014-11-27 2016-06-28 오션어스(주) 해양구조물의 계류장치
CN106542051A (zh) * 2017-01-12 2017-03-29 上海海事大学 一种趸船系留组合结构装置
KR102438692B1 (ko) * 2018-07-20 2022-08-31 삼성중공업 주식회사 부유식 구조물
CN109484571B (zh) * 2018-09-27 2020-04-28 武汉船用机械有限责任公司 船舶系泊装置
CN109625182B (zh) * 2018-10-31 2020-10-02 中国船舶重工集团公司第七一九研究所 一种带滑块可快速解脱的软刚臂单点系泊装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4645467A (en) 1984-04-24 1987-02-24 Amtel, Inc. Detachable mooring and cargo transfer system
USRE32578E (en) 1981-02-26 1988-01-12 Single Buoy Moorings Inc. Mooring system

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FR2367654A1 (fr) * 1976-10-15 1978-05-12 Emh Perfectionnements apportes aux sy
US4175903A (en) * 1976-12-20 1979-11-27 Carson William S Pick-up apparatus and containing assembly
NO145826C (no) * 1979-02-14 1982-06-09 Moss Rosenberg Verft As Anordning for fortoeyning av en flytende konstruksjon
US5381750A (en) * 1993-12-02 1995-01-17 Imodco, Inc. Vessel turret mooring system
US6037913A (en) * 1999-05-13 2000-03-14 Johnson; Pamela Kay Moveable satellite dish antenna mount
NL1013075C1 (nl) * 1999-09-17 2001-03-20 Bluewater Terminal Systems Nv Stelsel voor het afmeren van een op een watermassa drijvend lichaam.
GB2361459A (en) * 2000-04-20 2001-10-24 Bluewater Terminal Systems Nv Floating vessel with pipeline attachment apparatus
GB0321768D0 (en) * 2003-09-17 2003-10-15 Ocean Power Delivery Ltd Mooring system
GB0421795D0 (en) * 2004-10-01 2004-11-03 Baross John S Full weathervaning bow mooring and riser inboarding assembly
CN101057042B (zh) * 2004-11-11 2010-10-13 辛格尔浮筒系船公司 软码头锚泊系统

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE32578E (en) 1981-02-26 1988-01-12 Single Buoy Moorings Inc. Mooring system
US4645467A (en) 1984-04-24 1987-02-24 Amtel, Inc. Detachable mooring and cargo transfer system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3110689A4 (fr) * 2014-02-25 2017-10-11 Excelerate Energy Limited Partnership Collecteur courbé de transfert de gnl rétractable pour transferts de fret marin en tandem

Also Published As

Publication number Publication date
JP2012526702A (ja) 2012-11-01
US20120055388A1 (en) 2012-03-08
GB2484018A (en) 2012-03-28
WO2010131965A3 (fr) 2011-10-20
BRPI1010552A2 (pt) 2016-03-15
CN102448809A (zh) 2012-05-09
AU2010248209A1 (en) 2011-12-01
GB201119731D0 (en) 2011-12-28

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