WO2005035354B1 - A method of constructing a semi-submersible vessel using dry dock mating - Google Patents

A method of constructing a semi-submersible vessel using dry dock mating

Info

Publication number
WO2005035354B1
WO2005035354B1 PCT/SG2004/000337 SG2004000337W WO2005035354B1 WO 2005035354 B1 WO2005035354 B1 WO 2005035354B1 SG 2004000337 W SG2004000337 W SG 2004000337W WO 2005035354 B1 WO2005035354 B1 WO 2005035354B1
Authority
WO
WIPO (PCT)
Prior art keywords
truss
skidding
hull
upper hull
support structure
Prior art date
Application number
PCT/SG2004/000337
Other languages
French (fr)
Other versions
WO2005035354A1 (en
Inventor
Tan Hong Seow
King Kwee Goh
Kui Zhong
Shi Lin Shen
Original Assignee
Jurong Shipyard Pte Ltd
Tan Hong Seow
King Kwee Goh
Kui Zhong
Shi Lin Shen
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 Jurong Shipyard Pte Ltd, Tan Hong Seow, King Kwee Goh, Kui Zhong, Shi Lin Shen filed Critical Jurong Shipyard Pte Ltd
Priority to KR1020067009437A priority Critical patent/KR101153607B1/en
Publication of WO2005035354A1 publication Critical patent/WO2005035354A1/en
Publication of WO2005035354B1 publication Critical patent/WO2005035354B1/en
Priority to NO20062140A priority patent/NO339281B1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B75/00—Building or assembling floating offshore structures, e.g. semi-submersible platforms, SPAR platforms or wind turbine platforms
    • 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 
    • B63B77/00—Transporting or installing offshore structures on site using buoyancy forces, e.g. using semi-submersible barges, ballasting the structure or transporting of oil-and-gas platforms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B1/107—Semi-submersibles; Small waterline area multiple hull vessels and the like, e.g. SWATH
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C5/00—Equipment usable both on slipways and in dry docks
    • B63C5/02—Stagings; Scaffolding; Shores or struts
    • B63C2005/022—Shores or struts, e.g. individual oblique support elements for stabilizing hulls in dry-docks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C5/00—Equipment usable both on slipways and in dry docks
    • B63C5/02—Stagings; Scaffolding; Shores or struts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Transportation (AREA)
  • Civil Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Earth Drilling (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)

Abstract

A method of constructing a semi-submersible rig in a shipyard and completely assembling the rig at the shipyard. An upper hull (1) of the rig is constructed on land next to a dry dock, where the lower hull (2) is constructed in the dock where mating takes place. The upper hull is then skidded to a position above the lower hull. The lower hull is floated and lifted by flooding the dry dock, and position of the lower hull is adjusted using the ballast tanks of the lower hull. Once the upper hull and the lower hull are met and aligned, they are permanently welded together, completing the rig assembly in the dry dock.

Claims

AMENDED CLAIMS [received by the International Bureau on 15 April 2005 (15.04.2005); original claims 1-26 are replaced by amended claims 1-26]CLAIMSWhat is claimed is:
1. A method of constructing a semi-submersible rig, comprising the steps of: providing an upper hull and a skidding truss means for supporting the upper hull on land; providing a lower hull in a dry dock adjacent to the skidding truss means; providing a means, mounted on said skidding truss means, for moving the upper hull to a position above the lower hull; transferring the upper hull to a position above the lower hull; ballasting the lower hull to align the lower hull with the upper hull; mating the upper hull to the lower hull, thereby assembling the semi-submersible clearing the semi-submersible rig from the skidding truss means.
2. The method of Claim 1, further comprising a step of providing an auxiliary truss support structure for temporarily supporting the upper hull when the upper hull is positioned above the lower hull and wherein said step of clearing the semi- submersible rig from the skid truss means further comprises a step of clearing the semi-submersible rig from the auxiliary truss support structure.
3. The method of Claim 1, wherein said step of providing the skidding truss means comprises steps of erecting a skidding truss and a plurality of tower superstructures for retaining the upper hull at an elevated position on land before construction of the upper hull on said skidding truss and tower superstructures and for providing horizontal and vertical access to the upper hull.
4. The method of Claim 3, further comprising a step of providing a means for restraining lateral movement of the upper hull in relation to the skidding truss without application of welding between the upper hull and the skidding truss.
5. The method of Claim 4, wherein said restraining means comprises a plurality of wedge-shaped members having at least exterior surfaces formed from friction- increasing material, said wedge-shaped members being fitted between a bottom surface of the upper hull and a contact surface of the skidding truss.
6. The method of Claim 2, wherein said step of providing the auxiliary truss support structure comprises a step of erecting a supporting truss in the dry dock and providing connecting beams extending between the auxiliary truss support structure and the upper hull skidding truss means.
7. The method of Claim 6, further comprising a step of providing a means for restraining lateral movement of the auxiliary truss support structure in relation to the dry dock without application of welding and/or anchoring between the auxiliary truss support structure and the dry dock.
8. The method of Claim 7, wherein said restraining means comprises a plurality of wedge-shaped members having at least exterior surfaces formed from friction- increasing material, said wedge-shaped members being fitted between a bottom surface of the auxiliary truss support structure and the floor of the dry dock.
9. The method of Claim 6, further comprising a step of providing a means for restraining lateral movement of the connecting beams and the auxiliary truss support structure without application of welding between the auxiliary truss support structure and the connecting beams.
10. The method of Claim 9, wherein said restraining means comprises a plurality of wedge-shaped members having at least exterior surfaces formed from friction- increasing material, said wedge-shaped members being fitted between a bottom surface of the connecting beams and contact surfaces of the auxiliary truss support structure.
11. The method of Claim 6, wherein said means for transferring the upper hull comprises a jacking system mounted on the skidding truss means and the connecting beams.
16
12. The method of Claim 6, wherein said connecting beams have proximate ends, and wherein the said proximate ends are secured to the skidding truss means.
13. The method of Claim 12, further comprising a step of detachably securing distant ends of the connecting beams to a counterweight positioned behind the auxiliary truss support structure.
14. The method of Claim 1, further comprising a step of installing the auxiliary truss support structure on a floor of the dry dock.
15. The method of Claim 14, wherein said auxiliary truss support structure comprises a lower portion having outwardly convex connecting members and an upper portion having corresponding inwardly concave connecting members, and wherein said step of installing the auxiliary truss support structure on the dry dock floor comprises a step of matingly engaging the upper portion and the lower portion of the auxiliary truss support structure.
16. The method of Claim 2, wherein said step of clearing the semi-submersible rig from the auxiliary truss support structure comprises a step of retrieving the skidding truss means comprises a step of retrieving the skidding truss means and the connecting beams.
17. The method of Claim 16, further comprising a step of pulling the skidding truss means using a jacking system mounted on the skidding truss means.
18. The method of Claim 16, further comprising a step of pulling and offloading the connecting beams using a jacking system mounted on the connecting beams to a plurality of transporters.
17
19. A method of constructing a semi-submersible rig in a shipyard, comprising the steps of: providing a skidding truss and a plurality of supporting towers on land; constructing an upper hull of the semi-submersible rig on the skidding truss and the supporting towers; providing a supporting truss in a dry dock adjacent to the skidding truss; constructing a lower hull of the semi-submersible rig in the dry dock contemporaneously with the construction of the upper hull; securing a jacking system below the skidding truss; providing a plurality of skidding beams secured between the supporting truss and a lower portion of the skidding truss; jacking the upper hull and transferring constructed upper hull along the skidding beams to a position above constructed lower hull; floating the lower hull in the dry dock; ballasting the lower hull to align the lower hull with the upper hull; mating the upper hull to the lower hull, thereby assembling the semi-submersible rig in the dry dock; and clearing the semi-submersible rig from the skidding truss and the supporting truss.
20. The method of Claim 19, wherein the skidding beams have distant ends, and wherein the distant ends are detachably connected to a counterweight for resisting uplifting of the skidding beams during the upper hull transfer.
21. The method of Claim 20, further comprising a step of installing the supporting truss on a floor of the dry dock.
22. The method of Claim 21, wherein said supporting truss comprises a lower portion having outwardly convex connecting members and an upper portion having corresponding inwardly concave connecting members, and wherein said step of installing the supporting truss on the dry dock floor comprises a step of matingly engaging the upper portion and the lower portion of the supporting truss.
18
23. ( The method of Claim 20, further comprising a step of mounting friction- enhancing wedge-shaped members between at least the upper hull and the skidding truss, said wedge-shaped members restraining lateral movement of the upper hull without application of welding between the upper hull and the skidding truss.
24. The method of Claim 19, wherein said step of clearing the semi-submersible rig from the skidding truss and the supporting truss comprises a step of retrieving the skidding truss and the skidding beams.
25. The method of Claim 24, further comprising a step of pulling the skidding truss using a jacking system mounted on the skidding truss.
26. The method of Claim 24, further comprising a step of pulling and offloading the skidding beams using a jacking system mounted on the skidding beams to a plurality of barges.
19
PCT/SG2004/000337 2003-10-17 2004-10-15 A method of constructing a semi-submersible vessel using dry dock mating WO2005035354A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020067009437A KR101153607B1 (en) 2003-10-17 2004-10-15 A method of constructing a semi-submersible vessel using dry dock mating
NO20062140A NO339281B1 (en) 2003-10-17 2006-05-12 Method of constructing a semi-submersible rig

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SG200306086-0A SG135929A1 (en) 2003-10-17 2003-10-17 A method of constructing a semi-submersible vessel using dry dock mating
SG200306086-0 2003-10-17

Publications (2)

Publication Number Publication Date
WO2005035354A1 WO2005035354A1 (en) 2005-04-21
WO2005035354B1 true WO2005035354B1 (en) 2005-06-02

Family

ID=34432638

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SG2004/000337 WO2005035354A1 (en) 2003-10-17 2004-10-15 A method of constructing a semi-submersible vessel using dry dock mating

Country Status (7)

Country Link
KR (1) KR101153607B1 (en)
CN (1) CN100515858C (en)
MY (1) MY138006A (en)
NO (1) NO339281B1 (en)
SG (1) SG135929A1 (en)
TW (1) TWI342852B (en)
WO (1) WO2005035354A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017054575A1 (en) * 2015-09-28 2017-04-06 大连理工大学 Submersible floating-moving transport platform having floating dock and tower and operation method thereof

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG141277A1 (en) * 2006-09-25 2008-04-28 Jurong Shipyard Pte Ltd A method of contemporaneously constructing more than one semi- submersible rig using transverse skidding
KR102044969B1 (en) * 2013-05-21 2019-11-14 대우조선해양 주식회사 Move jig and move method for fpb
GB2538275B (en) 2015-05-13 2018-01-31 Crondall Energy Consultants Ltd Floating production unit and method of installing a floating production unit
CN107161284B (en) * 2017-05-25 2019-02-26 广船国际有限公司 A kind of buoyancy tank of semi-submersible ship above-water hoisting localization method
CN108454798B (en) * 2017-09-11 2022-04-26 青岛武船麦克德莫特海洋工程有限公司 Integrated construction and installation method of upper process module of floating production facility

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1527759A (en) * 1975-12-11 1978-10-11 Mitsui Shipbuilding Eng Semi-submersible structures and method of manufacture thereof
IL66064A (en) * 1981-06-22 1985-08-30 Adragem Ltd Semi-submersible marine platform
JPS58207413A (en) * 1982-05-26 1983-12-02 Mitsui Eng & Shipbuild Co Ltd Construction of semisub type platform
US5237949A (en) * 1992-05-29 1993-08-24 Shell Offshore Inc. Floating platform shallow draft hull/deck mating
GB2330854B (en) * 1997-10-31 2002-04-17 Ove Arup Partnership Method of transporting and installing an offshore structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017054575A1 (en) * 2015-09-28 2017-04-06 大连理工大学 Submersible floating-moving transport platform having floating dock and tower and operation method thereof

Also Published As

Publication number Publication date
TW200521024A (en) 2005-07-01
TWI342852B (en) 2011-06-01
KR20060098385A (en) 2006-09-18
KR101153607B1 (en) 2012-06-11
SG135929A1 (en) 2007-10-29
NO20062140L (en) 2006-05-12
WO2005035354A1 (en) 2005-04-21
CN100515858C (en) 2009-07-22
NO339281B1 (en) 2016-11-21
CN1867483A (en) 2006-11-22
MY138006A (en) 2009-04-30

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