WO1998022335A1 - Vaisseau polyvalent - Google Patents

Vaisseau polyvalent Download PDF

Info

Publication number
WO1998022335A1
WO1998022335A1 PCT/NO1997/000310 NO9700310W WO9822335A1 WO 1998022335 A1 WO1998022335 A1 WO 1998022335A1 NO 9700310 W NO9700310 W NO 9700310W WO 9822335 A1 WO9822335 A1 WO 9822335A1
Authority
WO
WIPO (PCT)
Prior art keywords
floater
floater according
hull
minimum
bow structure
Prior art date
Application number
PCT/NO1997/000310
Other languages
English (en)
Inventor
Wilhelm P. Blystad
Original Assignee
Ship Based System As
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 Ship Based System As filed Critical Ship Based System As
Priority to AU50713/98A priority Critical patent/AU5071398A/en
Publication of WO1998022335A1 publication Critical patent/WO1998022335A1/fr

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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

Definitions

  • the present invention relates to a multi-purpose ship, or a floater, comprising an elongated hull having a double bottom, double sides and double ends, a bow structure at one end and at least one vertical well.
  • the floater is a steel structure which has primarily been developed to floater at sea with fewest possible motions and to function as a floating platform and storage unit.
  • Technical equipment can be installed on the deck of the floater if the task requires the floater to be kept stationary above one or more geographical points on the sea floor, apart from in periods of time when the floater is to be moved under its own propulsion and without other assistance from one area of operation to another.
  • multi-purpose ship is used primarily to describe a ship with facilities for well drilling, well testing, fluid injection, installation and retrieval of structures on the sea floor, and also having a storage capacity and the capability of operating as a production ship.
  • the multi-purpose ship may be looked upon as a basic structure where equipment is installed as required on the ship's deck according to the operation that is to be carried out.
  • equipment is installed as required on the ship's deck according to the operation that is to be carried out.
  • drilling equipment, testing equipment, injection equipment or installation equipment, or a combination of one or more of these can be located on the ship's deck.
  • the ship When the ship is to be used as a platform for one or more drilling rigs, it is designed for drilling for oil/gas at a minimum of 150 m water depth and a minimum of 3,000 m well depth, measured from the sea floor.
  • it should be possible to test an oil or gas well, store oil produced from a well, and consume or burn off portions of any gas or other products coming from the well.
  • the structure should also be capable of functioning as a platform for a refining/separation/injection plant which has a capacity for production of oil at a minimum of 5,000 barrels a day.
  • the structure is also intended to be capable of operating as a platform for the installation of equipment which is to be placed on or retrieved from the sea floor.
  • the overall physical dimensions of the structure at any time must be within defined metric measurements and have certain components as an integrated part of the actual structure.
  • a floater of the aforementioned type which is characterised in that it includes storage tanks, living quarters in the bow structure, a substantially level deck extending from the living quarters and away from the bow, propulsion and positioning means, and the floater has a block coefficient Cb of a minimum of 0.75.
  • block coefficient Cb is used to mean the ratio between the volume of a ship's hull below the water line and the volume of a rectangular block of the same length, breadth and depth.
  • the block coefficient varies from about 0.5 for slim, highspeed ships, to about 0.85 for broad, barge-like vessels.
  • the floater has a storage capacity of a minimum of 30,000 m of fluid. In addition, it has a ballasting capacity of at least 30,000 m of water which is kept separate from the produced and stored liquid. Furthermore, the total carrying capacity of the floater on the deck area will be a minimum of 10,000 metric tons.
  • the floater is equipped with azimuth thrusters as propulsion and positioning means.
  • the floater has preferably parallel sides running astern from the bow structure. Furthermore, it has hull braces designed for supporting equipment on the deck area.
  • the floater has specific measurements which are within certain ranges, and has a total length of between 150 and 300 m, a total breadth of between 30 and 50 m, and a total depth of between 15 and 30 m.
  • the hull is advantageously designed as a substantially parallelepipedic body having two ends, where in one end a bow structure is added or constructed.
  • the vertical well may per se be located anywhere at all that might be found expedient, and in one embodiment may be located in front of the centre of the floater.
  • the structure may have one or more vertical through holes in the steel structure, each of 2 which is a minimum of 25 m in area and 375 m in volume and a maximum of 600 m in area and 18,000 m in volume.
  • the total deck area should be a minimum of 4,500 m and a maximum of 15,000 m .
  • the steel structure may advantageously be constructed of a combination of high tensile steel and low carbon steel.
  • the floater should have facilities for loading and unloading the fluid for which it must at any time have storage capacity, whilst maintaining at all times the desired draught. Furthermore, the product should be able to move from one geographical area to another at a minimum speed of 8 knots without requiring assistance from other vessels.
  • the floater may advantageously also have overnight accommodation for a minimum of 60 persons, and may in addition to the dynamic positioning system also have anchoring equipment.
  • Figure 1 is a schematic side view of a floater according to the invention.
  • Figure 2 shows the floater according to Fig. 1, seen from above;
  • Figures 3 A - 3C are a schematic lateral view, plan view and cross-sectional view of the floater according to Figs. 1 and 2 with drilling equipment installed above the well running through the hull; and
  • Figures 4 A - 4B are a schematic view and a plan view of the floater according to Figs. 1 and 2 with a production riser unit and rotary production tower installed.
  • Fig. 1 shows a multi-purpose ship or floater 5, in a basic embodiment.
  • the floater 5 has an elongated hull 1 having double sides 3, double ends 7,7' and a double bottom 4.
  • the hull 1 has a bow structure 8 at one end thereof with living quarters 9 built up above the bow structure 8.
  • the bow portion may be equipped with a helicopter deck 12.
  • a substantially level deck 2 runs aftward from the bow structure 8 all the way to the stern.
  • the hull 1 has a vertical well 6 located slightly in front of the centre of the floater.
  • the well can be located anywhere on the deck that is found expedient. It is also possible to have several wells 6.
  • the deck is equipped with several whirley cranes 13 for lifting equipment into place on the ship's deck 2.
  • the ship's hull has a storage capacity in the form of storage tanks 10 designed to be filled with production fluid such as oil.
  • Propulsion and positioning means 11 are also provided in the bottom of the hull 1.
  • the feature which is especially characteristic of the hull structure is its markedly parallelepipedic form, with a virtually flat bottom and an almost rectangular cross- sectional profile.
  • the bow portion will also be rather blunt and the vessel will be capable of moving from one geographical area to another at a relatively low speed, such as a minimum of 8 knots.
  • a relatively low speed such as a minimum of 8 knots.
  • the total length of the hull will be between 150 m and 300 m, the total breadth between 30 m and 50 m and the total depth between 15 m and 30 m.
  • the vertical through well 6 in the steel structure should as a minimum have a cross- section of 25 m 2 and a volume of 375 m 3 and as a maximum have a cross-sectional area of 600 m 2 and a volume of 18,000 m 3 .
  • the total deck area should be a minimum of 4,500 m and a maximum of 15,000 m , and the deck should have a total carrying capacity of a minimum of 10,000 metric tons. Furthermore, the total storage capacity in the hull 1 must be a minimum of 30,000 m liquefied fluid. A volume that is at least equally great must be available in the hull to be able to carry out ballasting with water and deballasting. The draught of the vessel can thus be continuously controlled and adjusted in the different use situations of the floater, and also during a particular working operation.
  • the floater may be constructed of a combination of high tensile steel and low carbon steel.
  • the hull 1 has braces which are dimensioned and designed to support equipment on the deck 2, such as well drilling equipment, well testing equipment, well injection equipment and means for installing structures on the sea floor and for retrieving structures therefrom.
  • equipment on the deck 2 such as well drilling equipment, well testing equipment, well injection equipment and means for installing structures on the sea floor and for retrieving structures therefrom.
  • the floater will be a form of multi-purpose ship which may be used as a drilling ship, testing ship, storage ship, injection ship, installation ship and production ship.
  • the equipment can be adapted so that it can be placed on the deck 2 or taken off the deck 2 as required, and depending on the demand for space, one or more types of equipment may also be in place on the deck 2 concurrently.
  • the ship must be capable of operating in all geographical areas of the world and satisfy the public laws and regulations which apply in different parts of the world.
  • Figs. 3A - 3C show the floater 5 as it will appear when in use as a drilling vessel.
  • a drilling rig 15 is installed on the vessel's deck 2 and the drilling derrick 16 is immediately above the well 6 that runs through the hull so that a drill string can run from the derrick 16, down through the well 6 and on towards the sea floor.
  • Fig. 3C shows clearly the previously discussed flat bottom and approximately rectangular cross-sectional shape of the hull.
  • Figs. 4A - 4B show the floater 5 when it has been prepared for production from the sea floor.
  • the floater 5 comprises a rotary production tower 17 and a riser unit 18 which runs inside the well 6.
  • the figure illustrates the floater 5 in a phase when it is used for permanant production and as a temporary transit store.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
  • Farming Of Fish And Shellfish (AREA)
  • Earth Drilling (AREA)

Abstract

Un vaisseau polyvalent comprend une coque allongée (1) à double fond (4), doubles murailles (3) et doubles extrémités (7, 7'), une structure proue (8) à une extrémité et au moins un puisard vertical (6). Le vaisseau (5) comprend des cuves de stockage (10), des quartiers d'habitation (9) disposés sur la structure proue (8), un pont sensiblement plan (2) s'étendant depuis les quartiers d'habitation (9) jusqu'à une certaine distance de la proue, et un système de propulsion et de positionnement (11). Il a un coefficient de finesse de 0,75 minimum. Conçu pour être polyvalent, il peut être utilisé pour le forage, l'essai et l'injection de puits, ainsi que pour l'installation et la récupération de matériel au fond de la mer. Il peut comporter des installations de stockage et être capable de fonctionner comme vaisseau de production.
PCT/NO1997/000310 1996-11-22 1997-11-21 Vaisseau polyvalent WO1998022335A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU50713/98A AU5071398A (en) 1996-11-22 1997-11-21 Multi-purpose vessel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO964979 1996-11-22
NO964979A NO964979L (no) 1996-11-22 1996-11-22 Flerbruksskip

Publications (1)

Publication Number Publication Date
WO1998022335A1 true WO1998022335A1 (fr) 1998-05-28

Family

ID=19900092

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1997/000310 WO1998022335A1 (fr) 1996-11-22 1997-11-21 Vaisseau polyvalent

Country Status (3)

Country Link
AU (1) AU5071398A (fr)
NO (1) NO964979L (fr)
WO (1) WO1998022335A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009105032A1 (fr) * 2008-02-19 2009-08-27 Brian Phillip Dobson Navire destiné à stocker des fluides et procédé de confinement de fluides à bord d'un navire
WO2010000745A2 (fr) * 2008-06-30 2010-01-07 A.P. Møller-Mærsk A/S Bateau de forage pour opérations d'intervention de haute mer
NL2009429C2 (en) * 2012-09-07 2014-03-10 Gustomsc Recources B V Drillship.
NO337334B1 (no) * 2013-06-19 2016-03-21 Aker Engineering & Tech As Konfigurasjon av boligkvarter ombord på et produksjonsfartøy

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995021091A1 (fr) * 1994-02-02 1995-08-10 Den Norske Stats Oljeselskap A.S Navire pour la production et/ou le chargement/dechargement et le transport des hydrocarbures dans les gisements marins, et/ou pour l'exploitation de puits
GB2292760A (en) * 1994-08-22 1996-03-06 Norske Stats Oljeselskap A vessel for use in the production of hydrocarbons from offshore fields, and an apparatus for use on such a vessel
EP0732261A1 (fr) * 1995-03-17 1996-09-18 Aquamaster-Rauma Oy Système de pilotage automatique d'un navire équipé d'hélices de gouvernails

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995021091A1 (fr) * 1994-02-02 1995-08-10 Den Norske Stats Oljeselskap A.S Navire pour la production et/ou le chargement/dechargement et le transport des hydrocarbures dans les gisements marins, et/ou pour l'exploitation de puits
GB2292760A (en) * 1994-08-22 1996-03-06 Norske Stats Oljeselskap A vessel for use in the production of hydrocarbons from offshore fields, and an apparatus for use on such a vessel
EP0732261A1 (fr) * 1995-03-17 1996-09-18 Aquamaster-Rauma Oy Système de pilotage automatique d'un navire équipé d'hélices de gouvernails

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009105032A1 (fr) * 2008-02-19 2009-08-27 Brian Phillip Dobson Navire destiné à stocker des fluides et procédé de confinement de fluides à bord d'un navire
WO2010000745A2 (fr) * 2008-06-30 2010-01-07 A.P. Møller-Mærsk A/S Bateau de forage pour opérations d'intervention de haute mer
WO2010000745A3 (fr) * 2008-06-30 2010-05-27 A.P. Møller-Mærsk A/S Bateau de forage pour opérations d'intervention de haute mer
NL2009429C2 (en) * 2012-09-07 2014-03-10 Gustomsc Recources B V Drillship.
WO2014038942A1 (fr) 2012-09-07 2014-03-13 Gustomsc Resources B.V. Navire de forage
NO337334B1 (no) * 2013-06-19 2016-03-21 Aker Engineering & Tech As Konfigurasjon av boligkvarter ombord på et produksjonsfartøy

Also Published As

Publication number Publication date
NO964979L (no) 1998-05-25
NO964979D0 (no) 1996-11-22
AU5071398A (en) 1998-06-10

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