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EP2551184A1 - Agencement de déconnexion d'amarrage - Google Patents

Agencement de déconnexion d'amarrage Download PDF

Info

Publication number
EP2551184A1
EP2551184A1 EP12178016A EP12178016A EP2551184A1 EP 2551184 A1 EP2551184 A1 EP 2551184A1 EP 12178016 A EP12178016 A EP 12178016A EP 12178016 A EP12178016 A EP 12178016A EP 2551184 A1 EP2551184 A1 EP 2551184A1
Authority
EP
European Patent Office
Prior art keywords
mooring
offshore structure
floating offshore
buoy
floating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12178016A
Other languages
German (de)
English (en)
Other versions
EP2551184B1 (fr
Inventor
John James Murray
Edmund O. Muehlner
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.)
Seatrium Floatec LLC
Original Assignee
Floatec LLC
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 Floatec LLC filed Critical Floatec LLC
Publication of EP2551184A1 publication Critical patent/EP2551184A1/fr
Application granted granted Critical
Publication of EP2551184B1 publication Critical patent/EP2551184B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • 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 
    • B63B22/00—Buoys
    • B63B22/02—Buoys specially adapted for mooring a vessel
    • 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
    • B63B2021/003—Mooring or anchoring equipment, not otherwise provided for
    • B63B2021/004—Quick release elements in mooring connections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B22/00—Buoys
    • B63B22/02—Buoys specially adapted for mooring a vessel
    • B63B2022/028—Buoys specially adapted for mooring a vessel submerged, e.g. fitting into ship-borne counterpart with or without rotatable turret, or being releasably connected to moored vessel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices

Definitions

  • the invention is generally related to the disconnection of moored floating offshore structures from mooring buoys while under environmental loads.
  • bottom founded and floating moored structures are used. There are times when floating structures that are moored in place must be released from their moorings and moved due to high environmental forces such as sea ice or storms such as hurricanes.
  • a second approach is the use of a buoy that supports a mooring spread and keeps all lines attached to the disconnected buoy for subsequent reconnection as a group.
  • This approach is typically based on a conical shaped buoy arrangement that drops away from the floating structure and facilitates all of the mooring lines remaining connected to the disconnected buoy. This keeps the lines together in a group, as compared to individual line disconnect, but the height of the buoy being released is constrained by the beam dimension of the floating vessel being released. This can result in a longer time duration for the buoy to clear the disconnected floating structure.
  • the objectives of mooring systems that may be disconnected for this purpose are a quick release and quickly increasing the distance between the mooring and the floating offshore structure.
  • the risks or problems that occur with these disconnectable arrangements are 1) binding between the disconnectable mooring buoy and floating structure when the mechanism is expected to release and 2) contact interaction between the disconnectable mooring buoy and floating structure that results in damage to one or both structures after the mooring system is released.
  • Binding may occur because the surfaces that are supposed to separate have been in contact for a number of years prior to the first disconnect attempt.
  • the two bodies can be forced apart by mechanical devices, but these devices must be released as soon as separation occurs to prevent damage to the releasing device.
  • Another major risk is that, due to the two bodies moving independently after release, but still in the same proximity, they can collide causing damage to one or both structures.
  • an improved means of releasing a floating offshore structure from its mooring while under environmental loads is provided.
  • a mooring disconnect arrangement for a floating offshore structure and a disconnectable mooring buoy.
  • At least one high pressure water jet is positioned to direct water between the floating offshore structure and the mooring buoy.
  • the floating offshore structure and mooring buoy are also provided with specially shaped complementary surfaces to assist in disconnection and separation.
  • One or more mechanical restraining devices may be used to retain the floating offshore structure and mooring buoy connected together during normal drilling or production operations.
  • FIG. 1A illustrates a prior art high profile release buoy.
  • FIG. 1B illustrates a prior art low profile release buoy.
  • FIG. 2 - 5 schematically illustrate the separation of a floating structure from a mooring.
  • the mooring disconnect arrangement 10 comprises the use of high pressure water jets 12 in conjunction with specially shaped interface surfaces 14 on the floating offshore structure 16 and the mooring buoy 18.
  • the water jets 12 are preferably provided on the hull of the floating offshore structure 16.
  • the water capacity and pressure, number of water jets 12, and spacing between the water jets 12 is determined by the size of the floating offshore structure 16 and mooring buoy 18.
  • connection or restraining devices 20 are used to restrain the floating offshore structure 16 and mooring buoy 18 locked together. Any suitable connection devices such as hydraulic rams or rack and pinion jacking arrangements may be used as the mechanical connection devices 20.
  • Ballasting force may also be used to force the floating offshore structure and mooring buoy together.
  • a downward facing cone shape 22 on the floating offshore structure 16 is preferably used in conjunction with a complementary shape 24 on the mooring buoy 18 for receiving the cone shape 22.
  • the cone shape 22 and its complementary shaped receiver 24 are preferably designed to have a low profile height that is less than currently existing designs.
  • the floating offshore structure 16 and mooring buoy 18 are held together during drilling or production operations by mechanical restraining devices 20.
  • the mechanical restraining devices 20 are released and high pressure water jets 12 are activated to help initiate separation of the floating offshore structure 16 from the mooring buoy 18.
  • the mooring lines 26 aid in retaining a force for causing the mooring buoy 18 to return to its normal equilibrium position.
  • Fig. 4 illustrates a scenario where the force of ice may cause the offshore floating structure 16 to rotate prior to full disconnection and separation from the mooring buoy 18.
  • the specially shaped, low profile surfaces aid in separation.
  • ballasting forces may also be used to aid in separation of the floating offshore structure 16 from the mooring buoy 18 by removing ballast from the floating offshore structure 16 (causing it to float upward) and adding ballast to the mooring buoy 18 (causing it to move downward).
  • the illustrated change in normal trim angle of the mooring buoy 18 is caused by the ballasting forces and pressure from the water jets 12.
  • the present approach can solve the problem of binding and maintains a safe distance between the floating structure and the buoy supporting the mooring arrangement.
  • the present approach can facilitate a quicker release than the prior art and thus reduces the risk of damage to the offshore structure and mooring due to contact during the release.
  • the method of release of the present approach helps to prevent binding between the buoy carrying the mooring lines and the floating structure.
  • a mooring disconnect arrangement for a floating offshore structure and a mooring buoy.
  • At least one high pressure water jet is positioned to direct water between the floating offshore structure and the mooring buoy.
  • the floating offshore structure and mooring buoy are also provided with specially shaped complementary surfaces to assist in disconnection and separation.
  • One or more mechanical restraining devices may be used to retain the floating offshore structure and mooring buoy connected together during normal drilling or production operations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Revetment (AREA)
  • Bridges Or Land Bridges (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
EP12178016.7A 2011-07-29 2012-07-26 Agencement de déconnexion d'amarrage Active EP2551184B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13/194,065 US20130029546A1 (en) 2011-07-29 2011-07-29 Mooring Disconnect Arrangement

Publications (2)

Publication Number Publication Date
EP2551184A1 true EP2551184A1 (fr) 2013-01-30
EP2551184B1 EP2551184B1 (fr) 2019-03-27

Family

ID=46639335

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12178016.7A Active EP2551184B1 (fr) 2011-07-29 2012-07-26 Agencement de déconnexion d'amarrage

Country Status (7)

Country Link
US (1) US20130029546A1 (fr)
EP (1) EP2551184B1 (fr)
KR (1) KR101368582B1 (fr)
CN (1) CN102897286B (fr)
CA (1) CA2784107C (fr)
DK (1) DK180119B1 (fr)
RU (1) RU2516960C2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HUE054152T2 (hu) * 2016-05-05 2021-08-30 Cabot Corp Elektródák, kompozíciók és eszközök nagy szerkezetû kormokkal
DE102016011572A1 (de) * 2016-09-23 2018-03-29 Martin Daum Bauwerk zur Errichtung an Gewässeroberflächen und Verfahren zu seiner Errichtung
KR102552142B1 (ko) * 2017-10-13 2023-07-05 현대자동차주식회사 양극 활물질 및 고체 전해질 복합체의 제조 방법 및 이를 포함하는 전고체 전지용 양극의 제조 방법
CN114604364B (zh) * 2021-06-08 2023-05-16 中国科学院海洋研究所 一种系缆式水下直升机剖面测量系统及方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1595875A (fr) * 1968-12-02 1970-06-15
GB2160166A (en) * 1984-06-11 1985-12-18 Exxon Production Research Co Vessel mooring system
US6113314A (en) * 1998-09-24 2000-09-05 Campbell; Steven Disconnectable tension leg platform for offshore oil production facility
WO2009010089A1 (fr) * 2007-07-16 2009-01-22 Bluewater Energy Services B.V. Ensemble de tourelle et de bouée déconnectable
WO2009099337A1 (fr) * 2008-02-05 2009-08-13 Moss Maritime As Navire pour le forage et la production dans des eaux gelées
US7669660B1 (en) * 2008-11-26 2010-03-02 Floatec, Llc Riser disconnect and support mechanism

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339516A (en) * 1965-12-06 1967-09-05 Dorsett Plastics Co Inc Jet propelled fire fighting boat
US3735722A (en) * 1971-12-09 1973-05-29 Interstate Oil Transport Co Rigid disconnectable coupling for waterborne vessels
NZ288410A (en) * 1995-05-11 1998-09-24 Jens Korsgaard Method and apparatus for mooring a vessel to a submerged mooring element
US5676083A (en) * 1995-12-29 1997-10-14 Korsgaard; Jens Offshore mooring device and method of using same
US6340272B1 (en) * 1999-01-07 2002-01-22 Exxonmobil Upstream Research Co. Method for constructing an offshore platform
US6968797B2 (en) * 2002-09-13 2005-11-29 Tor Persson Method for installing a self-floating deck structure onto a buoyant substructure
US7861974B2 (en) * 2004-03-18 2011-01-04 Michigan Aerospace Corporation Docking system
EP1849701B1 (fr) * 2006-04-27 2009-04-01 Bluewater Energy Services B.V. Système d'ancrage déconnectable
NO20071491L (no) * 2007-03-21 2008-09-22 Sevan Marine Asa Frakoplbar plattform for operasjon i vaerutsatte omrader
CN101612982B (zh) * 2009-08-13 2012-05-09 上海利策科技有限公司 可解脱多点系泊圆环形浮式海洋平台

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1595875A (fr) * 1968-12-02 1970-06-15
GB2160166A (en) * 1984-06-11 1985-12-18 Exxon Production Research Co Vessel mooring system
US6113314A (en) * 1998-09-24 2000-09-05 Campbell; Steven Disconnectable tension leg platform for offshore oil production facility
WO2009010089A1 (fr) * 2007-07-16 2009-01-22 Bluewater Energy Services B.V. Ensemble de tourelle et de bouée déconnectable
WO2009099337A1 (fr) * 2008-02-05 2009-08-13 Moss Maritime As Navire pour le forage et la production dans des eaux gelées
US7669660B1 (en) * 2008-11-26 2010-03-02 Floatec, Llc Riser disconnect and support mechanism

Also Published As

Publication number Publication date
KR101368582B1 (ko) 2014-02-28
CN102897286A (zh) 2013-01-30
DK180119B1 (en) 2020-05-19
RU2012132405A (ru) 2014-02-10
CA2784107A1 (fr) 2013-01-29
CN102897286B (zh) 2015-10-07
US20130029546A1 (en) 2013-01-31
CA2784107C (fr) 2014-09-09
DK201270454A (en) 2013-01-30
EP2551184B1 (fr) 2019-03-27
KR20130014373A (ko) 2013-02-07
RU2516960C2 (ru) 2014-05-20

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