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WO2000018640A1 - Barge de stockage temporaire - Google Patents

Barge de stockage temporaire Download PDF

Info

Publication number
WO2000018640A1
WO2000018640A1 PCT/EP1998/006218 EP9806218W WO0018640A1 WO 2000018640 A1 WO2000018640 A1 WO 2000018640A1 EP 9806218 W EP9806218 W EP 9806218W WO 0018640 A1 WO0018640 A1 WO 0018640A1
Authority
WO
WIPO (PCT)
Prior art keywords
hull
vessel according
vessel
barge
oil
Prior art date
Application number
PCT/EP1998/006218
Other languages
English (en)
Inventor
Christian Romano
Original Assignee
Schlumberger Technology B.V.
Schlumberger Limited
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
Priority to GB9717657A priority Critical patent/GB2328906B/en
Priority claimed from GB9717657A external-priority patent/GB2328906B/en
Application filed by Schlumberger Technology B.V., Schlumberger Limited filed Critical Schlumberger Technology B.V.
Priority to PCT/EP1998/006218 priority patent/WO2000018640A1/fr
Priority to BR9814757-9A priority patent/BR9814757A/pt
Priority to US09/555,234 priority patent/US6349663B1/en
Publication of WO2000018640A1 publication Critical patent/WO2000018640A1/fr
Priority to NO20002776A priority patent/NO20002776L/no

Links

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
    • B63B35/28—Barges or lighters
    • B63B35/285—Flexible barges, e.g. bags
    • 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
    • B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
    • B63B1/048—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull with hull extending principally vertically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B11/00—Interior subdivision of hulls
    • B63B11/02—Arrangement of bulkheads, e.g. defining cargo spaces
    • 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
    • B63B35/28—Barges or lighters
    • 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 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed

Definitions

  • the present invention relates to a barge used for temporary storage of oil. Such barges are used where oilfields are being developed or tested in marine environments .
  • any vessel used as a temporary storage means should be classified under international regulations as an unmanned barge .
  • de-ballasting or oil-pumping should be carried by attendant vessels and not carried by the storage vessel itself except, perhaps, temporarily when needed. This has the additional advantage that areas which would normally be taken up by such installations are kept free.
  • an oil storage vessel comprising a hull at least partially enclosing a storage chamber for containing oil and provided with a plurality of ballast chambers, the orientation of the hull relative to water in which it is floated being controllable by adjusting the content of some or all of the ballast chambers ; said hull being adapted for displacement in a horizontal orientation while the storage chamber is full, whereby said vessel is suitable for the transport of oil.
  • the hull is generally cylindrical in shape and is formed at least in part of a wall comprising inner and outer skins; the ballast chambers being formed in the wall of the hull between inner and outer skins thereof.
  • the vessel may be provided with inlet valve means for controlling the flow of material into the storage chamber and/or ballast control means for adjusting the content of the ballast chambers; the inlet valve means and/or the ballast control means being provided with means for connection to an umbilical line to permit control from a remote location, for example, an attendant support vessel.
  • the invention can thus provide relatively inexpensive, easily manoeuvrable means for the temporary storage of oil which is, additionally, suitable for classification as an unmanned barge .
  • Figure 1 is a schematic side view of a temporary storage and transport barge in accordance with the invention.
  • Figures 2 (a) to (e) are sections through the barge of Figure 1 taken on the lines A-A, B-B, C-C, D-D and E-E, respectively:
  • Figures 3 (a) and (b) show two options for mooring the barge of Figure 1 in deep water
  • Figure 4 shows two options for mooring the barge of Figure 1 in shallow water.
  • the temporary storage and transport barge 10 shown in the drawings comprises a main hull 12 of generally tubular form having a double wall defining one or more ballast chambers 14.
  • the tubular hull 12 is typically of diameter 10 - 20 metres and length 45 - 120 metres. It is formed of two concentric, watertight continuous steel shells 13 , 15 which are connected together by means of stiffening rings 16 and bulkheads 18 to form a pressure resistant annular void.
  • the centre of the tubular hull 12 within the toroid is completely free of any structure and forms the main storage space 19.
  • the ends of the tubular hull 12 may be closed off by means of stiffened ring diaphragms 20 which provide additional support for the main hull 12.
  • the purpose of the annular void defined between the steel shells 13 and 15 is to form ballast chambers 14 by means of which the buoyancy of the whole structure can be controlled.
  • the annular space forming the ballast chambers 14 is preferably subdivided into separate compartments so as to give better control over the buoyancy and the orientation of the barge 10 in the water.
  • the barge 10 may be caused to float generally horizontally, that is, with its longitudinal axis parallel to the surface of the water, or vertically, with its central longitudinal axis perpendicular to the surface of the water or in any other chosen orientation. By controlling the ballasting of the chambers 14 the barge 10 can be moved between these positions at will.
  • ballast chambers are arranged and controlled, however, so that, when the hull 12 is floating horizontally the same line on the circumference will always be uppermost.
  • This uppermost surface is referred to as the deck and is provided with a deck walkway 22 to permit personnel to traverse the length of the barge 10.
  • a similar walkway may be provided on the surface which is arranged to be uppermost when the hull 12 is floating vertically.
  • the hull 12 is provided with a strengthening ring 24 capable of withstanding the forces necessary for mooring or anchoring the barge 10.
  • Each ring 24 has three strong points provided with a mounting plate to which can be fitted mooring fairleads and mooring anchors for facilitating either horizontal or vertical mooring as is required at any given time.
  • one, or alternatively two, of the strong points are ballasted to act as keel ballast when the barge 10 is in horizontal mode.
  • the uppermost strongpoint (s) when the barge 10 is in horizontal mode are accessible from the ends of the deck walkway 22.
  • the strengthening rings 24 and the central storage space in the centre of the annular hull 12 are, as mentioned above, closed off by means of stiffened ring diaphragms or bulkheads 20. These may be 'partial' pressure diaphragms or bulkheads, that is, they may be designed to withstand pressure only when the hull 12 is horizontal, allowing oil to be contained within the central storage space. When the barge 10 is aligned vertically, 'free flooding' valves may be opened to permit flooding of the central space. These valves may be operated from the deck walkway which is uppermost when the hull 12 is in a vertical orientation. Oil in the central space may be separated from seawater by containment in a flexible balloon (not shown) within the central space.
  • oil may simply be pumped into the upper end of the central space, displacing the seawater downwards. Overfilling of the barge 10 is avoided by monitoring the position of the oil/water interface with conventional marine monitoring apparatus close to the bottom of the hull 10. Such monitoring enables the operator to control loading.
  • the stiffening ring 24 acts as a foundation for several structural components .
  • the most important of these is a ship-type bow unit 30.
  • the bow unit 30 improves the hydrodynamics of the barge 10 when it is being towed in a horizontal orientation and, additionally, contains the equipment usually required for classification as a barge.
  • the bow unit 30 is provided with a central moonpool slot 32 which is free flooding so as to minimise the buoyancy of the bow unit 30. This, in turn, minimises longitudinal bending wave moments on the hull 12 and bow unit 30.
  • the moonpool 32 may contain removable control units (not shown) used to control the barge 10.
  • the structure of the hull is adapted to withstand the forces acting thereon in the most demanding situation among those described above, i.e. in the transport mode, when the vessel is towed away in a horizontal orientation and the storage chamber is full of oil.
  • control units may be used to effect control of the barge buoyancy and ballasting in different applications, for example, horizontal towing when empty, towing when full of oil, horizontal and vertical mooring when testing.
  • the control units may be stored on an attendant vessel.
  • the control units may be carried by an attendant vessel at all times and linked to the barge 10 when needed by an umbilical.
  • the control unit for the vertical testing mode is, ideally, articulated when mounted on the barge 10 itself so that it remains horizontal irrespective of whether the hull 12 is in the vertical or horizontal orientation.
  • the pressure diaphragm 20 at the bow end is designed to barge or ship classification rules to withstand the pressure head exerted by the weight of the bow structure
  • the barge 10 can be deployed as shown in Figure 3(a) and (b) , in a vertical orientation.
  • the barge 10 is moored of a rig 40 to which it is connected by means of a suitable transfer hose 41 and is accompanied by an attendant vessel 42 which can provide emergency towing and may also carry the control units described above for adjusting ballasting and controlling the flow of oil into the central storage chamber 19.
  • the barge 10 is secured to the seabed by means of a single fairlead 44 which passes through fixing points on both strengthening rings 24 to an anchor tensioning block 46 which is anchored to the seabed by means of anchors 48 with uplift capacity.
  • the anchor tensioning block 46 is controlled from the attendant vessel 42 at the surface by means of release wire 49.
  • This mooring arrangement is suitable for use in water depths greater than 150 metres.
  • the mooring arrangement of Figure 3(b) is suitable.
  • the uppermost end of the hull 12 is anchored directly to the seabed by means of either mooring anchors as indicated at 50 or anchors and clump weights 52 which serve to reduce the mooring radius .
  • the barge 10 can be deployed horizontally as shown in Figure 4.
  • the barge 10 is positioned off the rig or platform 40 either as indicated at position 1, where the rig 40 is off to one side of the barge 10, or, as shown in position 2, with rig 40 off the stern of the barge 10.
  • the barge 10 is anchored by means of four lines 54 connected to suitably placed anchors 50 with or without clump weights 52. Alternatively, the two forward lines may be omitted and the position of the barge 10 maintained by a towing line to the attendant vessel 42.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Cleaning Or Clearing Of The Surface Of Open Water (AREA)

Abstract

Un navire (10) de stockage de pétrole comprend une coque (12) de forme générale tubulaire ayant une double paroi définissant une ou plusieurs chambres de ballast (14). L'orientation de la coque (12) par rapport à l'eau dans laquelle elle flotte peut être commandée par réglage du contenu de certaines ou de toutes les chambres de ballast (14). Ainsi, par une gestion appropriée des chambres de ballast (14) on peut faire flotter la barge (10) d'une manière générale horizontalement, c'est-à-dire, avec son axe longitudinal parallèle à la surface de l'eau. Dans cette position, elle est particulièrement utile pour le transport des contenus de la coque. Dans un autre mode de réalisation, la coque (12) peut, par manipulation des chambres de ballast (14), être placée avec son axe longitudinal perpendiculaire à la surface de l'eau de manière à permettre son utilisation pour la récupération et le stockage de liquides tels que du pétrole.
PCT/EP1998/006218 1997-08-20 1998-09-30 Barge de stockage temporaire WO2000018640A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB9717657A GB2328906B (en) 1997-08-20 1997-08-20 Temporary transport and storage barge
PCT/EP1998/006218 WO2000018640A1 (fr) 1997-08-20 1998-09-30 Barge de stockage temporaire
BR9814757-9A BR9814757A (pt) 1998-09-30 1998-09-30 Armazenagem temporária de óleo
US09/555,234 US6349663B1 (en) 1998-09-30 1998-09-30 Temporary storage barge
NO20002776A NO20002776L (no) 1997-08-20 2000-05-30 Lekter for midlertidig lagring

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9717657A GB2328906B (en) 1997-08-20 1997-08-20 Temporary transport and storage barge
PCT/EP1998/006218 WO2000018640A1 (fr) 1997-08-20 1998-09-30 Barge de stockage temporaire

Publications (1)

Publication Number Publication Date
WO2000018640A1 true WO2000018640A1 (fr) 2000-04-06

Family

ID=26070329

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/006218 WO2000018640A1 (fr) 1997-08-20 1998-09-30 Barge de stockage temporaire

Country Status (1)

Country Link
WO (1) WO2000018640A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191322592A (en) * 1913-10-07 1914-10-07 William Doxford Improvements in or relating to Marine Storage Tanks for Oil.
GB1231883A (fr) * 1968-09-06 1971-05-12
EP0494497A1 (fr) * 1990-12-13 1992-07-15 Joseph W. Blandford Procédé et dispositif pour la production des gisements d'hydrocarbures sousmarins
GB2310407A (en) * 1996-02-21 1997-08-27 Deep Oil Technology Inc Floating caisson for offshore production and/or drilling

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191322592A (en) * 1913-10-07 1914-10-07 William Doxford Improvements in or relating to Marine Storage Tanks for Oil.
GB1231883A (fr) * 1968-09-06 1971-05-12
EP0494497A1 (fr) * 1990-12-13 1992-07-15 Joseph W. Blandford Procédé et dispositif pour la production des gisements d'hydrocarbures sousmarins
GB2310407A (en) * 1996-02-21 1997-08-27 Deep Oil Technology Inc Floating caisson for offshore production and/or drilling

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