WO2000041927A1 - Agencement d'accostage - Google Patents

Agencement d'accostage

Info

Publication number
WO2000041927A1
WO2000041927A1 PCT/GB2000/000065 GB0000065W WO0041927A1 WO 2000041927 A1 WO2000041927 A1 WO 2000041927A1 GB 0000065 W GB0000065 W GB 0000065W WO 0041927 A1 WO0041927 A1 WO 0041927A1
Authority
WO
WIPO (PCT)
Prior art keywords
arrangement
vessel
base slab
flat bottomed
seabed
Prior art date
Application number
PCT/GB2000/000065
Other languages
English (en)
Inventor
Poul-Eric Christiansen
Alan Hill
Original Assignee
Kvaerner Process (Australia) Pty. Ltd.
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 Kvaerner Process (Australia) Pty. Ltd. filed Critical Kvaerner Process (Australia) Pty. Ltd.
Priority to AU19929/00A priority Critical patent/AU1992900A/en
Publication of WO2000041927A1 publication Critical patent/WO2000041927A1/fr

Links

Classifications

    • 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
    • B63C1/00—Dry-docking of vessels or flying-boats
    • B63C1/02—Floating 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
    • B63C1/00—Dry-docking of vessels or flying-boats
    • B63C1/12—Docks adapted for special vessels, e.g. submarines

Definitions

  • the invention relates to a semi-permanent docking arrangement for a vessel adapted to process fluid hydrocarbons arising from offshore oil/gas fields.
  • the invention relates to a docking arrangement for installation at a shallow water site (e.g. in water depths from 15 to 30m).
  • the arrangement is capable of locating and supporting a tanker type vessel at that site, for the purpose of processing and storeing fluid hydrocarbons.
  • the docking arrangement has provision for the mooring alongside of another vessel to offload at least some of the fluid hydrocarbons.
  • the docking arrangement may have provision for storeing at least some of the products.
  • FPSOs Floating Production Storage and Offloading facilities
  • VLCC Very Large Crude Carrier
  • the FPSO has received fluid hydrocarbons directly from an subsea oil/gas field.
  • the hydrocarbons have been subjected to primary processing on the FPSO at or near the oil/gas field, and the products have been removed by pipeline or shuttle tanker.
  • the products so removed can be transferred to onshore processing facilities. Mooring the FPSO so that it can remain safely on field in extreme weather conditions can create problems.
  • the invention provides a semi permanent docking arrangement for a flat bottomed production and storage vessel, the arrangement comprising a submersible elongate base slab with a flat upper surface upon which a flat bottomed vessel may be set, and a generally flat lower surface to be grounded on a shallow seabed, in which there is means to stabilize the base slab on the seabed and means to locate the flat bottomed vessel directly or indirectly on the base slab.
  • At least two of the columns are adapted to act as mooring dolphins, so that another vessel (e.g. an offtake tanker) can be moored alongside and spaced apart from the flat bottomed vessel.
  • another vessel e.g. an offtake tanker
  • At least the base slab has capacity to store fluid products to be transferred between the flat bottomed vessel and another vessel.
  • the base slab is capable of floating for movement between its construction yard and a remote shallow water site at which it may be required to be grounded.
  • the generally flat lower surface of the base slab may have downwardly extending skirts which are capable of projecting into the seabed; and there may be provision for piles to be driven through the base slab into the seabed.
  • the base slab is cellular.
  • at least one of the cells is be upwardly open so that solid ballast may be deposited therein.
  • the docking arrangement described above may be used in combination with a generally similar docking arrangement, so the two arrangements can be set on the seabed adjacent to each other in end to end relationship, and one flat bottomed vessel can be set on the two adjacent base slabs.
  • the base slab is arranged to act as a prepared seabed foundation upon which the vessel is to be located, whereby to stabilise the vessel against environmental loads e.g. arising from cyclones.
  • the invention includes a docking arrangement as described above in combination with a flat bottomed vessel having facilities to process and store fluid hydrocarbons, the vessel being located on the base slab.
  • FIG. 1 is a perspective view of a docking arrangement
  • Figure 2 is a perspective view of that docking arrangement with a production and storage vessel being located thereon;
  • FIG 3 is a cross section of the docking arrangement shown in Figures 1 and 2, with another vessel moored alongside;
  • Figure 4 is a cross section of a second docking arrangement; and Figure 5 is a cross section of a third docking arrangement.
  • a docking arrangement 10 has a base slab 11.
  • the base slab 11 is of elongate rectangular planform and has a flat upper surface 12.
  • Within the base slab there are longitudinal and transverse bulkheads 14 and 15 respectively.
  • the docking arrangement has an array of upstanding columns 16 disposed around its periphery. The columns 16 are disposed in rows along each of the longer sides of the base slab 11.
  • the docking arrangement 10 may be constructed of steel or concrete at any convenient yard.
  • the docking arrangement is self buoyant, so that it may be floated from the yard to a remote shallow water site.
  • the docking arrangement has watertight internal compartments.
  • the compartments may also be adapted for the storage of hydrocarbon product. Ballasting of the compartments stabilises the base slab on the seabed.
  • the base slab 11 may have skirts (not shown) extending downwardly from its undersurface.
  • the skirts surround the periphery of the base slab. These skirts are configured to penetrate into the seabed at the shallow water site.
  • the base slab 11 may also have provision for piles (not shown) to be driven downwardly through it into the seabed.
  • the skirts and/or piles stabilise the base slab 11 on the seabed.
  • the base slab 11 is conveniently of cellular construction. Walls of the cells may be formed of the bulkheads 14 and 15. Some of the cells may be open topped, so that they may be at least partially filled with solid ballast. Some of the cells may be closed to form the buoyancy/storage compartments referred to above.
  • the optional skirts and piles may be arranged to extend down from or through the walls or bulkheads.
  • the docking arrangement When complete, the docking arrangement is floated to its intended site. At that site it is ballasted down to rest on the seabed.
  • the columns 16 give the docking arrangement stability during submergence of the base slab 11. Thus the docking arrangement is self installing.
  • the docking arrangement may be prefabricated elsewhere and assembled at the intended site.
  • the seabed may have been roughly leveled before the docking arrangement is ballasted down. Any remaining space between the underside of the base slab and the seabed can be filled with grout for uniform bearing pressure.
  • a production and storage vessel 17 is floated over the base slab 11 between the rows of columns 16, as shown in Figure 2.
  • the production and storage vessel has a flat bottomed tanker type hull.
  • the vessel 17 is ballasted down to rest on the upper surface of the base slab 11 , and is fixedly located on the docking arrangement.
  • Pipelines (not shown) are arranged to transmit hydrocarbon fluids from subsea wells to the vessel 17 for primary processing.
  • the columns 16 On the side of the docking arrangement shown in figure 2, the columns 16 have fenders
  • the offtake tanker 19 When an appropriate amount of product has been transferred, the offtake tanker 19 is released, and can steam away to an onshore terminal.
  • the docking arrangement may be designed specifically to support a particular production and storage vessel.
  • the cross section of Figure 4 shows a docking arrangement 30 designed to support a production and storage vessel 37.
  • the longitudinal bulkheads 34 of the docking arrangement are disposed to lie directly beneath the bulkheads of the vessel 37.
  • This docking arrangement is made of reinforced concrete, but it could be made of steel.
  • the docking arrangement may be a standard barge of suitable draft.
  • the cross section of Figure 5 shows a docking arrangement 40 in the form of a submerged barge.
  • the barge is sufficiently robust to support a vessel 47, notwithstanding that the bulkheads 44 of the barge do not align with the bulkheads of the vessel 47.
  • the barge is constructed of steel, using conventional shipbuilding techniques.
  • the vessel 17/37/47 is located on the docking arrangement 10/30/40 for the life of an offshore oil/gas field. This may extend over several years. Thus the combination of docking arrangement and vessel can be regarded as semi-permanent. However, at the end of the life of the field, the vessel may be floated off to another site.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Transportation (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

Cet agencement semi-permanent d'accostage, destiné à un navire de stockage et de production, à fond plat (17), comprend une dalle de base submersible (11), de forme allongée, possédant une surface supérieure plate sur laquelle le navire à fond plat peut reposer, ainsi qu'une surface inférieure généralement plate, destinée à être posée sur un fond marin peu profond ; cette dalle est caractérisée en ce qu'elle comprend des moyens destinés à la stabiliser sur le fond marin et des moyens servant à positionner le navire à fond plat, de manière directe ou indirecte. De manière avantageuse, cette dalle (11) peut comprendre des colonnes verticales (16) conçues pour servir de pieux d'amarrage (18), de façon qu'un autre navire (par exemple un pétrolier de soutirage 19) puisse mouiller le long du navire à fond plat (17) tout en étant espacé de celui-ci.
PCT/GB2000/000065 1999-01-15 2000-01-13 Agencement d'accostage WO2000041927A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU19929/00A AU1992900A (en) 1999-01-15 2000-01-13 Docking arrangement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9900892.2 1999-01-15
GB9900892 1999-01-15

Publications (1)

Publication Number Publication Date
WO2000041927A1 true WO2000041927A1 (fr) 2000-07-20

Family

ID=10845969

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2000/000065 WO2000041927A1 (fr) 1999-01-15 2000-01-13 Agencement d'accostage

Country Status (3)

Country Link
AU (1) AU1992900A (fr)
GB (1) GB2345716A (fr)
WO (1) WO2000041927A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6546739B2 (en) 2001-05-23 2003-04-15 Exmar Offshore Company Method and apparatus for offshore LNG regasification
WO2008040924A1 (fr) * 2006-10-06 2008-04-10 Welcome Inn Investments N.V. Cales sèches flottantes
EP2045506A1 (fr) * 2007-10-04 2009-04-08 Shell Internationale Researchmaatschappij B.V. Système d'installation en mer pour la vaporisation d'un flux d'hydrocarbures liquéfiés, procédé pour la fourniture d'un tel système et procédé pour la vaporisation d'un flux d'hydrocarbures liquéfiés
CN107075824B (zh) 2014-11-27 2021-01-01 格拉夫漂浮股份公司 用于离岸活动的海床终端
FR3063277B1 (fr) * 2017-02-27 2019-04-05 Saipem S.A. Dispositif d'accouplement de deux bateaux

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7411975A (en) * 1973-09-07 1975-03-11 William Arthur Phillips Self-propelled floating dock - has base with ballasting compartments from which stabilisers extend upwards at sides
GB1402869A (en) * 1972-10-06 1975-08-13 Bylo J J Portable dock structures
GB1581090A (en) * 1978-05-20 1980-12-10 Goetaverken Arendal Ab Floating dock
GB2063182A (en) * 1979-11-15 1981-06-03 Nederland Nv S H V Offshore harbours
GB2101938A (en) * 1981-05-22 1983-01-26 Marine Automation Limited Docking equipment for yachts, motor cruisers and small craft
JPS58209683A (ja) * 1982-05-31 1983-12-06 Mitsubishi Heavy Ind Ltd 浮体のドライアツプ方法
WO1988008806A1 (fr) 1987-05-04 1988-11-17 Eb Subsea Agencements destines a la production, au stockage et au transfert d'hydrocarbures en mer
US5445093A (en) * 1994-05-23 1995-08-29 Terry Spragg Unloading facility for flexible water transporting barges

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9520806D0 (en) * 1995-10-11 1995-12-13 Kvaerner Earl & Wright Buoyant platform
GB2340161B (en) * 1998-07-31 2002-04-03 Resource Marginal Systems Ltd Shallow water platform

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1402869A (en) * 1972-10-06 1975-08-13 Bylo J J Portable dock structures
NL7411975A (en) * 1973-09-07 1975-03-11 William Arthur Phillips Self-propelled floating dock - has base with ballasting compartments from which stabilisers extend upwards at sides
GB1581090A (en) * 1978-05-20 1980-12-10 Goetaverken Arendal Ab Floating dock
GB2063182A (en) * 1979-11-15 1981-06-03 Nederland Nv S H V Offshore harbours
GB2101938A (en) * 1981-05-22 1983-01-26 Marine Automation Limited Docking equipment for yachts, motor cruisers and small craft
JPS58209683A (ja) * 1982-05-31 1983-12-06 Mitsubishi Heavy Ind Ltd 浮体のドライアツプ方法
WO1988008806A1 (fr) 1987-05-04 1988-11-17 Eb Subsea Agencements destines a la production, au stockage et au transfert d'hydrocarbures en mer
US5445093A (en) * 1994-05-23 1995-08-29 Terry Spragg Unloading facility for flexible water transporting barges

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"OFFSHORE ENGINEER", October 1999, pages: 47
PATENT ABSTRACTS OF JAPAN vol. 8, no. 57 (M - 283)<1494> 15 March 1984 (1984-03-15) *

Also Published As

Publication number Publication date
GB2345716A (en) 2000-07-19
AU1992900A (en) 2000-08-01
GB0000920D0 (en) 2000-03-08

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