WO2010116489A1 - Procédé de transport de gaz naturel liquéfié produit en mer - Google Patents

Procédé de transport de gaz naturel liquéfié produit en mer Download PDF

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Publication number
WO2010116489A1
WO2010116489A1 PCT/JP2009/057104 JP2009057104W WO2010116489A1 WO 2010116489 A1 WO2010116489 A1 WO 2010116489A1 JP 2009057104 W JP2009057104 W JP 2009057104W WO 2010116489 A1 WO2010116489 A1 WO 2010116489A1
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WIPO (PCT)
Prior art keywords
ship
natural gas
storage
transport
modified
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PCT/JP2009/057104
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English (en)
Japanese (ja)
Inventor
雅樹 川瀬
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三井海洋開発株式会社
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Priority to PCT/JP2009/057104 priority Critical patent/WO2010116489A1/fr
Publication of WO2010116489A1 publication Critical patent/WO2010116489A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/24—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines

Definitions

  • the present invention relates to a method for transporting liquefied natural gas produced in the sea area, and more particularly, to a method for transporting liquefied natural gas using a large floating production storage shipping system.
  • a technology using a pipeline has been mainly used as a technology for transporting from a gas field to a demand point.
  • the transportation technology using such a pipeline can be applied only to a geographically limited region such as a region relatively close to the gas field.
  • a technology has been proposed in which a facility for cooling and liquefying natural gas, which is a gas, is constructed near the gas field, and liquefied natural gas (hereinafter referred to as “LNG”) is produced and transported by an LNG tanker. ing.
  • LNG liquefied natural gas
  • the LNG production facility (hereinafter referred to as “plant”) is constructed on land close to the gas field.
  • Gas fields often exist in the ocean, and the gas from the gas field is transported to the plant by a submarine pipeline, but if the gas field is far from the land, the plant may be constructed in the sea area near the gas field. desirable.
  • the cost of constructing fixed facilities in the sea area is very high, and the construction of the plant is difficult at a water depth of 300 m or more.
  • Large floating production storage and shipping systems (Floating Production, Storage and Offloading System. Hereinafter referred to as “FPSO”) have been proposed (see, for example, Patent Documents 1 and 2 and Non-Patent Document 1). ).
  • FPSO for LNG needs to be equipped with a liquefaction plant for liquefying the obtained gas components and a dedicated special tank for storing LNG.
  • LNG is a fluid having a cryogenic temperature of ⁇ 162 ° C.
  • facilities for handling the fluid need to be kept at a cryogenic temperature, the facilities need to be heat-insulated. Therefore, a FPSO for LNG requires a floating facility that is very large, complex, and has sufficient strength. Therefore, the construction of a new floating facility that satisfies these conditions has a problem that it takes enormous cost, material, and construction time as compared with the case of building a floating facility for petroleum FPSO. Also, shipyards that can be built are limited.
  • the purpose is to provide an efficient method with a certain degree of security.
  • the above-mentioned problem is a method for producing liquefied natural gas in the sea area and transporting the liquefied natural gas.
  • the process of remodeling into a production ship, the process of mooring the modified large floating production ship near the gas field, and collecting, separating, refining, and liquefying natural gas from the seabed in the modified large floating production ship A step of remodeling an existing ship into a storage ship equipped with a storage facility for liquefied natural gas, and arranging the remodeled storage ship in the vicinity of the remodeled large floating production ship.
  • the existing ship is modified to a large floating production ship. Separate production equipment and transportation equipment.
  • FPSO in the method of transporting LNG produced in the sea area
  • constructing a new large-scale floating production facility with a built-in LNG storage tank is a huge cost, material and construction It takes time. Therefore, separating the functions of production and storage, remodeling a large ship that does not have an existing LNG tank, using the remodeled ship as a large floating production facility that does not have an LNG tank in the LNG FPSO, By remodeling the existing LNG carrier with a storage vessel, significant cost and material savings can be achieved.
  • the technology for remodeling existing ships can greatly reduce the design time and construction time of large floating production facilities and storage vessels, so it is possible to start operations earlier than when newly building ships.
  • the existing ship since the existing ship is used, the time required for the operator to acquire the driving technique can be shortened compared to the case where the new ship is used, and as a result, LNG can be transported efficiently.
  • the modified large floating production ship in the modified large floating production ship, it is obtained by a step of recovering a fluid containing natural gas from the seabed, a step of separating and purifying the fluid, and a step of separating.
  • the liquefied natural gas is liquefied to be liquefied and cooled to obtain liquefied natural gas; the liquefied natural gas is transported to a buffer storage facility; and the buffer storage facility is connected to the modified storage ship. And a step of transporting liquefied natural gas to the first transport facility.
  • the liquefaction process of natural gas can be performed and LNG can be stored in the buffer storage facility.
  • LNG can be stored in the buffer storage facility.
  • the storage ship cannot be moored near the large floating production ship due to bad weather Even so, it is possible to produce LNG continuously, and to produce and transport LNG efficiently.
  • the collected natural gas can be transported without waste by performing the LNG storage step, the vaporized gas reliquefaction step, and the reliquefied LNG recycle step in the storage vessel.
  • the production process of LNG is handled by a large floating production ship and the storage process is handled by a storage ship, each process can be carried out at different facilities, so if an accident occurs, damage should be minimized. LNG transport with high safety is possible.
  • a relatively inexpensive alternative ship can be used as an alternative storage ship, it is not necessary to stop the entire system, and efficient production and transportation of LNG becomes possible.
  • the above-described problem is a method for producing liquefied natural gas in the sea area and transporting the liquefied natural gas.
  • a modified storage ship takes charge of the process of liquefying natural gas.
  • the size of an existing ship suitable for remodeling is not enough and a large floating production ship cannot be installed up to the liquefaction facility, by installing the liquefaction facility on the storage ship, A degree of freedom can be secured.
  • building a large floating production ship, which is the core requires enormous costs, materials, and construction time. Therefore, by reducing the equipment, it is possible to reduce the cost required for the construction of a large floating production ship.
  • the method includes a storing step and a step of transporting the liquefied natural gas to the second transport facility connected to the transport ship.
  • the natural gas can be transported from the large floating production ship to the storage ship in a gaseous state. Accordingly, the range for handling LNG may be only storage vessels and transport vessels, and the cost for construction and maintenance of low-temperature facilities can be minimized.
  • the method for transporting LNG produced in the sea area of claim 1 of the present invention it is possible to construct a large floating production ship and a storage ship by modifying an existing ship. Time can be reduced, and further, the time required for operation and the like can be shortened, and LNG can be transported efficiently.
  • LNG can be continuously produced, and efficient production and transportation of LNG becomes possible. Further, since the number of modified parts of the storage ship can be minimized, the cost and the time required for construction can be reduced.
  • the recovered natural gas can be transported without waste by providing a process for recycling the vaporized natural gas. Since the production process and the storage process are performed in different facilities, highly safe production of LNG is possible.
  • the range for handling LNG may be only a storage ship and a transport ship, and the cost for constructing and maintaining a low-temperature facility can be reduced. Can do.
  • the LNG transportation can be performed while the transport ship is continuously operated and the LNG is produced, the LNG transportation is efficiently performed without wasting time. be able to.
  • FIG. (A) It is a side view of the large floating production ship and storage ship which concern on Embodiment 1.
  • FIG. (B) It is a top view of the large floating production ship and storage ship which concern on Embodiment 1.
  • FIG. (A) It is a side view of the large floating production ship, storage ship, and transport ship which concern on Embodiment 1-1.
  • (B) It is a top view of the large floating production ship, storage ship, and transport ship concerning Embodiment 1-1.
  • A) It is a side view of the large floating production ship, storage ship, and transport ship which concern on Embodiment 1-2.
  • (B) It is a top view of the large floating production ship, storage ship, and transport ship concerning Embodiment 1-2.
  • FIG. (A) It is a side view of the large floating production ship and storage ship which concern on Embodiment 2.
  • FIG. (B) It is a top view of the large-sized floating production ship and storage ship which concern on Embodiment 2.
  • FIG. (A) It is a side view of the large floating production ship, storage ship, and transport ship concerning Embodiment 2-1.
  • (B) It is a top view of the large floating production ship, storage ship, and transport ship concerning Embodiment 2-1.
  • A) It is a side view of the large floating production ship, storage ship, and transport ship concerning Embodiment 2-2.
  • Embodiment 2-2 It is a top view of the large floating production ship, storage ship, and transport ship concerning Embodiment 2-2.
  • FIG. (A) It is a side view of the large floating production ship and storage ship which concern on Embodiment 3.
  • FIG. (B) It is a top view of the large-sized floating production ship and storage ship which concern on Embodiment 3.
  • FIG. (A) It is a side view of the large floating production ship, storage ship, and transport ship concerning Embodiment 3-1.
  • (B) It is a top view of the large floating production ship, storage ship, and transport ship concerning Embodiment 3-1.
  • A) It is a side view of the large floating production ship, storage ship, and transport ship which concern on Embodiment 3-2.
  • (B) It is a top view of the large floating production ship, storage ship, and transport ship concerning Embodiment 3-2.
  • FIG. (A) It is a side view of the large floating production ship and storage ship which concern on Embodiment 4.
  • FIG. (B) It is a top view of the large-sized floating production ship and storage ship which concern on Embodiment 4.
  • FIG. (A) It is a side view of the large floating production ship, storage ship, and transport ship concerning Embodiment 4-1.
  • (B) It is a top view of the large floating production ship, storage ship, and transport ship concerning Embodiment 4-1.
  • A) It is a side view of the large floating production ship, storage ship, and transport ship concerning Embodiment 4-2.
  • Embodiment 4-2 It is a top view of the large floating production ship, storage ship, and transport ship concerning Embodiment 4-2.
  • FIG. 1 It is a flowchart figure which shows the transportation method of LNG which concerns on embodiment of this invention. It is a flowchart figure which shows the LNG production process which concerns on Embodiment 1. FIG. It is a flowchart figure which shows the LNG production process which concerns on Embodiment 2. FIG.
  • FIGS. 1 to 3 show a connection form of a large floating production ship, a storage ship and a transport ship according to Embodiment 1
  • FIGS. 1 (a) and 1 (b) are side views of the large floating production ship and the storage ship, respectively.
  • FIGS. 2 (a) and 2 (b) are side views and FIG. 3 (a) and FIG. 3 (b) are side views and FIG.
  • FIGS. 4 to 6 show the connection form of the large floating production ship, storage ship and transport ship according to the second embodiment, and FIGS.
  • FIGS. 5A and 5B are a side view and a plan view of a storage ship
  • FIGS. 5A and 5B are connections including the transport ship of Embodiment 2-1
  • FIGS. FIGS. 7 to 9 show a connection form of a large floating production ship, a storage ship and a transport ship according to the third embodiment
  • FIG. b) is a side view and a plan view of a large floating production ship and a storage ship, respectively.
  • FIGS. 8 (a) and 8 (b) are Embodiment 3-1
  • FIGS. 9 (a) and 9 (b) are Embodiment 3.
  • FIGS. 10 is a side view and a plan view of a connected state including a transport ship of FIG. 2, and FIGS. 10 to 12 show a connection form of a large floating production ship, a storage ship and a transport ship according to the fourth embodiment.
  • FIGS. 11A and 11B are a side view and a plan view of a large floating production ship and a storage ship, respectively, and FIGS. 11A and 11B are Embodiments 4-1, FIGS. ) Is a side view and a plan view of the connected state including the transport ship of Embodiment 4-2,
  • FIG. 13 is a flowchart showing the LNG transport method according to the embodiment of the present invention, and FIG. FIG. 15 is a flowchart showing the LNG production process according to the second embodiment. It is an over door view.
  • the existing ship for modification to be used for the large floating production ship 1 can be an LNG tanker, an oil tanker, an oil FPSO ship, or the like. Among them, it is preferable to use a ship having a hull size of 200,000 to 350,000 tons.
  • the modified hull includes a mooring line 12 (FIGS. 1 to 3 and FIGS. 7 to 9) grounded to the seabed 5 or a mooring line 12 and an external turret 17 (FIGS. 4 to 6 and FIGS. 10 to 12).
  • Storage equipment for storing fluids for storing fluids, production equipment such as oil treatment equipment, gas treatment equipment, water treatment equipment, power generation equipment, control systems, boilers, utility equipment such as various pumps, and fire extinguishing equipment And a lifeboat, a helicopter deck, a deck crane, a ballast tank, and at least one residence facility for workers.
  • the large floating production ship 1 may be provided with an LNG buffer storage facility.
  • the LNG buffer storage facility is installed to buffer and store LNG when the LNG transport to the storage ship 2 is interrupted in the short term or in the long term.
  • the volume of the buffer storage facility is preferably 5,000 m 3 to 10,000 m 3 .
  • the large floating production ship 1 and a natural gas liquefaction facility may be provided.
  • this liquefaction facility a cascade process, a mixed refrigerant process, an expander process, or the like can be used.
  • An LNG tanker can be used for the existing ship for modification to be used for the storage ship 2.
  • the modified hull includes an LNG storage facility 22 and a second transport facility LNG transport facility (natural gas transport facility) 23 (FIGS. 2, 5, 8 and 11) or LNG transport facility (natural gas transport facility) 27. (Figs. 3, 6, 9, and 12), at least one LNG transport pump, power generation equipment, fire extinguishing device, lifeboat, deck crane, ballast tank, and housing facilities for workers. It shall be provided.
  • a natural gas liquefaction facility or a vaporized gas reliquefaction facility may be provided, and the liquefaction process may be a cascade process, a mixed refrigerant process, an expander process, or the like as described above.
  • the transport ship 3 can use a general LNG tanker and is provided with an LNG storage facility 31.
  • a moss type, an independent square shape, an independent cylindrical shape, a membrane type, or the like can be used.
  • the hull structure of large floating production ship 1, storage ship 2 and transport ship 3 is in accordance with the requirements of the classification society.
  • a multipoint mooring type (FIGS. 1 to 3 and FIGS. 7 to 9) and a single point mooring type (FIGS. 4 to 6 and FIGS. 10 to 12) can be used.
  • the multi-point mooring method requires less cost and the one-point mooring method has the advantage that it can be used in a wide range.
  • the storage ship 2 is provided with a mooring line 21.
  • an internal turret with the turret located inside the hull, a disconnectable disconnectable turret, an external turret with the turret outside the bow, and a tower yoke can be used.
  • An optimal system can be selected.
  • the external turrets 17 of FIGS. 4 to 6 and FIGS. 10 to 12 are used in areas where the sea conditions are relatively strict and the water depth is deep.
  • each ship can be a tandem type in which the large floating production ship 1 and the storage ship 2 are connected in series, or a horizontal type in which they are connected in parallel.
  • the tandem type has advantages such that the side of the hull is less damaged at the time of connection and can be used in a wider sea area, and the horizontal type has a short LNG transport route and can easily move personnel.
  • a tandem type or a horizontal type can be used. These arrangements are selected according to sea conditions using FPSO.
  • connection equipment of each ship when the arrangement of each ship is a horizontal type, the jointed fender support frames 14 (FIGS. 1 to 6) and 25 (FIGS. 2, 5, 8 and 11) having a joint structure are used.
  • Rigid connection means, or elastic connection means such as mooring lines 13 (FIGS. 1-6) and 24 (FIGS. 2, 5, 8 and 11) can be selected as appropriate, and both means can be used simultaneously. Can be used.
  • joints are provided in the connection means so as to allow relative movement of each ship, and buoyancy bodies 15 (FIGS. 1 to 6) and 26 (FIGS. 2, 5, 8 and 11) are provided. There is a need.
  • elastic connection means such as mooring lines 7 (FIGS. 7 to 12) and 28 (FIGS. 3, 6, 9, and 12) are preferable.
  • the LNG transport facility (natural gas transport facility) 6, 16, 23 and 27 between the ships can use a loading arm and a loading hose.
  • the return gas loading arm that returns the natural gas vaporized in the storage ship 2 to the large floating production ship 1 for re-liquefaction. It is necessary to have a gas loading hose.
  • the LNG is transported (shipping), if the relative displacement (swing) of the ship is large, it is preferable to use a flexible loading hose and a return gas loading hose.
  • the loading hose and the return gas loading hose are arranged so as to maintain a sufficient height from the sea surface 4 and are in a position not affected by the wave at the interface.
  • FIG. 13 is a flowchart showing a method for transporting LNG according to an embodiment of the present invention, and the following embodiment will more specifically describe this flowchart.
  • the LNG production process S1 shows a process of liquefying natural gas in the large floating production ship 1, and can optionally include a process of reliquefying the natural gas vaporized in the storage ship 2. .
  • the LNG production process S1 will be described in detail with reference to the first embodiment and FIG.
  • the LNG production process S2 shows a process of liquefying natural gas in the storage ship 2.
  • the LNG production process S2 will be described in detail with reference to the second embodiment and FIG.
  • Embodiment 1 shows an example of a form suitable for an area where the sea conditions are mild.
  • 1 to 3 are a plan view and a side view showing the configuration of the large floating production ship 1, the storage ship 2 and the transport ship 3 according to the first embodiment.
  • the large floating production ship 1 and the storage ship 2 are connected in parallel.
  • mold used is shown.
  • FIG. 1 shows only a large floating production ship 1 and a storage ship 2
  • FIG. 2 illustrates an embodiment 1-1 in which a transport ship 3 is connected in parallel to the storage ship 2 and is a horizontal type.
  • FIG. 3 illustrates an embodiment 1-2 in which the transport ship 3 is connected in series to the storage ship 2 to be a tandem type.
  • a reliquefaction device is mounted on an LNG tanker having an LNG tank with a capacity of 125,000 m 3 , and modified to be reused as a storage facility to form a storage ship 2 (FIG. 13, step 201)
  • the connecting means uses the mooring cable 13 and the articulated fender support frame 14, and the buoyancy body 15 is further provided.
  • the mooring method is a multi-point mooring method, and a method of mooring the large floating production ship 1 and the storage ship 2 is adopted.
  • the LNG transport facility 16 as the first transport facility is connected between the large floating production ship 1 and the storage ship 2 (FIG. 13, step 105).
  • the large floating production ship 1 is equipped with an LNG transportation facility 16, that is, a loading arm for LNG transportation, and a return gas loading arm for returning the natural gas vaporized in the storage ship 2 to the large floating production ship 1.
  • the transport ship 3 is arranged in the vicinity of the storage ship 2 in the arrangement of Embodiment 1-1 (FIG. 2) or 1-2 (FIG. 3), and then connected to the storage ship 2 (FIG. 13, step 301). .
  • the connecting means at this time the mooring cable 24 and the articulated fender support frame 25 are used in the embodiment 1-1 (FIG.
  • Embodiment 1-1 (FIG. 2), and a buoyancy body 26 is further provided.
  • the mooring line 28 is used.
  • the LNG transportation facility 23 in the embodiment 1-1 (FIG. 2) and the LNG transportation facility 27 in the embodiment 1-2 (FIG. 3) are connected between the storage ship 2 and the transportation ship 3 (FIG. 13, process). 302).
  • the storage ship 2 is equipped with an LNG transport facility 23, that is, a loading arm for LNG transport, and a return gas loading arm for returning the natural gas vaporized by the transport ship 3 to the storage ship 2.
  • a loading hose and a return gas loading hose are mounted as the LNG transport facility 27.
  • the LNG stored in the storage ship 2 is transported by the LNG transport pump through the LNG production step S1 (FIG. 13, step 303).
  • the transport ship 3 is detached from the storage ship 2 (FIG. 13, step 304), and the LNG is transported by operating the transport ship 3 (FIG. 13, step 305).
  • LNG production process S1 is comprised by the following processes.
  • the riser 11 is installed in the gas field (step S101), and fluid in which oil, gas, and water are mixed is recovered from the gas field (step S102).
  • the recovered fluid is roughly separated into oil, gas, and water by a three-phase separator (step S103).
  • the separated oil further removes moisture (step S104) and is stored in the oil storage tank of the large floating production ship 1 (step S105).
  • moisture, sulfur content, carbon dioxide gas, etc. are removed from the separated natural gas (step S106), and then compressed and cooled to obtain LNG (step S108).
  • a device for separating propane, butane and the like before cooling is mounted on the large floating production ship 1 and a separation step is performed (step S107).
  • the LNG produced by the large floating production ship 1 is transported to the storage ship 2 by the LNG transport pump and stored (step S109). Further, the natural gas generated from the tank of the storage ship 2 is converted into LNG by the reliquefaction device mounted on the storage ship 2 (step S110), and sent to the tank of the storage ship 2, thereby preventing the loss of natural gas. .
  • the LNG is transported from the storage ship 2 to the transport ship 3 through the LNG production process S1 (step 303).
  • positions the transport ship 3 in the vicinity of the storage ship 2, and connects with the storage ship 2 is carried out. Can be done continuously.
  • Embodiment 2 shows an example of a form suitable for an area where sea conditions are relatively severe and the water depth is deep.
  • 4 to 6 are a plan view and a side view showing configurations of the large floating production ship 1, the storage ship 2 and the transport ship 3 according to the second embodiment.
  • the large floating production ship 1 and the storage ship 2 are connected in parallel.
  • mold used is shown.
  • FIG. 4 illustrates only the large floating production ship 1 and the storage ship 2
  • FIG. 5 illustrates an embodiment 2-1 in which the transport ship 3 is connected to the storage ship 2 in parallel to form a horizontal type.
  • FIG. 6 shows an embodiment 2-2 in which the transport ship 3 is connected in series to the storage ship 2 to be a tandem type.
  • an oil tanker with a size of 250,000 tons, a three-phase separator, a gas refining device, a gas compression device, an oil / water treatment device, a control system, an LNG transport pump, a power generation device, a boiler, a mooring device, safety equipment, etc.
  • a large floating production ship 1 (FIG. 13, step 101).
  • the large floating production ship 1 is moored near the gas field in the sea area (FIG. 13, step 102).
  • the mooring method employs a method of mooring using the external turret 17 among the one-point mooring methods.
  • an LNG carrier with an existing storage facility with a capacity of 150,000 m 3 was remodeled to be equipped with a natural gas liquefaction facility to form storage vessel 2 (FIG. 13, step 201), and then in the vicinity of the gas field.
  • the connecting means uses the mooring cable 13 and the articulated fender support frame 14, and the buoyancy body 15 is further provided.
  • the natural gas transportation facility 16 as the first transportation facility is connected between the large floating production ship 1 and the storage ship 2 (FIG. 13, step 105). At this time, the natural gas transport facility 16 is a loading arm.
  • the transport ship 3 is arranged in the vicinity of the storage ship 2 in the arrangement of Embodiment 2-1 (FIG. 5) or 2-2 (FIG. 6), and then connected to the storage ship 2 (FIG. 13, step 301). .
  • the connection means at this time the mooring cable 24 and the articulated fender support frame 25 are used in the embodiment 2-1 (FIG. 5), and a buoyancy body 26 is further provided.
  • the mooring line 28 is used.
  • an LNG transport facility 23 is connected in the embodiment 2-1 (FIG. 5) and an LNG transport facility 27 is connected in the embodiment 2-2 (FIG. 6) (FIG. 13, process). 302).
  • the storage ship 2 is equipped with the LNG transportation facility 23, that is, the loading arm for LNG transportation, and the return gas loading arm for returning the natural gas vaporized by the transportation ship 3 to the storage ship 2.
  • the LNG transportation facility 23 that is, the loading arm for LNG transportation
  • the return gas loading arm for returning the natural gas vaporized by the transportation ship 3 to the storage ship 2.
  • a loading hose and a return gas loading hose are mounted as the LNG transport facility 27.
  • the LNG produced by the storage ship 2 is transported by the LNG transport pump through the LNG production step S2 (FIG. 13, step 303).
  • the transport ship 3 is detached from the storage ship 2 (FIG. 13, step 304), and the LNG is transported by operating the transport ship 3 (FIG. 13, step 305).
  • LNG production process S2 is comprised by the following processes.
  • the riser 11 is installed in the gas field (step S201), and the fluid in which oil, gas, and water are mixed is recovered from the gas field (step S202).
  • the recovered fluid is roughly separated into oil, gas, and water by a three-phase separator (step S203).
  • the separated oil further removes moisture (step S204) and is stored in the oil storage tank of the large floating production ship 1 (step S205).
  • moisture, sulfur content, carbon dioxide gas, etc. are removed from the separated natural gas (step S206) to obtain a natural gas containing no impurities.
  • a device for separating propane, butane and the like before cooling is mounted on the large floating production ship 1 and a separation step is performed (step S207).
  • natural gas purified by the large floating production ship 1 is transported to the storage ship 2 by a gas compressor (step S208). Then, natural gas is cooled and liquefied with a refrigerant such as nitrogen cooled by a turbo expander using natural gas as a nitrogen refrigerant in the storage ship 2 to obtain LNG (step S209).
  • the LNG is transported from the storage ship 2 to the transport ship 3 through the LNG production process S2 (process 303).
  • positions the transport ship 3 in the vicinity of the storage ship 2, and connects with the storage ship 2 is carried out. Can be done continuously.
  • Embodiment 3 shows an example of the form suitable for the Southeast Asian sea area especially in the area where sea conditions are comparatively severe.
  • 7 to 9 are a plan view and a side view showing the configuration of the large floating production ship 1, the storage ship 2 and the transport ship 3 according to the third embodiment.
  • the large floating production ship 1 and the storage ship 2 are connected in series.
  • mold connected is shown.
  • FIG. 7 shows only the large floating production ship 1 and the storage ship 2
  • FIG. 8 illustrates an embodiment 3-1 in which the transport ship 3 is connected to the storage ship 2 in parallel and is a horizontal type.
  • FIG. 9 illustrates an embodiment 3-2 in which the transport ship 3 is connected to the storage ship 2 in series to form a tandem type.
  • the connecting means of the large floating production ship 1 and the storage ship 2 uses a mooring line 7, and a loading hose and a return gas loading hose are mounted as an LNG transport facility (natural gas transport facility) 6.
  • a mooring line 24 and an articulated fender support frame 25 are used as a connecting means for the storage ship 2 and the transport ship 3, and a buoyancy body 26 is further provided.
  • the mooring line 28 is used.
  • Embodiment 4 shows an example of a form suitable for an area where sea conditions are relatively severe and the water depth is deep.
  • 10 to 12 are a plan view and a side view showing the configuration of the large floating production ship 1, the storage ship 2 and the transport ship 3 according to the fourth embodiment.
  • the large floating production ship 1 and the storage ship 2 are arranged in parallel.
  • adopted the horizontal type connected is shown.
  • FIG. 10 illustrates only the large floating production ship 1 and the storage ship 2
  • FIG. 11 illustrates the embodiment 4-1 in which the transport ship 3 is connected to the storage ship 2 in parallel to be installed horizontally.
  • FIG. 12 illustrates an embodiment 4-2 in which the transport ship 3 is connected to the storage ship 2 in series to be a tandem type.
  • the connecting means of the large floating production ship 1 and the storage ship 2 uses a mooring line 7, and a loading hose and a return gas loading hose are mounted as an LNG transport facility (natural gas transport facility) 6.
  • the mooring line 24 and the articulated fender support frame 25 are used as a connecting means for the storage ship 2 and the transport ship 3, and a buoyancy body 26 is further provided.
  • the mooring line 28 is used.

Abstract

L'invention porte sur un procédé de transport de gaz naturel liquéfié produit en mer, les coûts et les matériaux requis lorsqu'un système flottant de production/stockage/expédition de grande dimension est utilisé étant réduits, pour obtenir ainsi un procédé efficace. En particulier, l'invention porte sur un procédé de production de gaz naturel liquéfié en mer et de transport du gaz naturel liquéfié, caractérisé en ce qu'il comprend une étape de transformation d'un navire existant en un navire de production flottant de grande dimension (1), une étape de transformation d'un navire existant en un navire de stockage (2) équipé d'une installation destinée à stocker du gaz naturel liquéfié, une étape de production de gaz naturel liquéfié en mer par accouplement du navire de production flottant de grande dimension (1) au navire de stockage (2), et une étape de transport du gaz naturel liquéfié à l'aide d'un navire de transport (3).
PCT/JP2009/057104 2009-04-07 2009-04-07 Procédé de transport de gaz naturel liquéfié produit en mer WO2010116489A1 (fr)

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PCT/JP2009/057104 WO2010116489A1 (fr) 2009-04-07 2009-04-07 Procédé de transport de gaz naturel liquéfié produit en mer

Applications Claiming Priority (1)

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PCT/JP2009/057104 WO2010116489A1 (fr) 2009-04-07 2009-04-07 Procédé de transport de gaz naturel liquéfié produit en mer

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2508417A3 (fr) * 2011-03-11 2013-01-23 Keppel Offshore&Marine Technology Centre Pte Ltd Systèmes d'installation en mer et procédés de production de gaz liquéfié, de stockage et de déchargement pour réduire et prévenir les dommages
WO2016055525A1 (fr) * 2014-10-08 2016-04-14 Sbm Schiedam B.V. Méthanier et procédé de fabrication dudit méthanier

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4840016A (fr) * 1971-09-27 1973-06-12
JP2000513061A (ja) * 1997-04-02 2000-10-03 シントロレウム コーポレーション ハイドレート回収のためのシステムおよび方法
JP2002501861A (ja) * 1998-01-30 2002-01-22 デン ノルスケ スタッツ オルジェセルスカプ エイ．エス Ｌｎｇ搬送システム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4840016A (fr) * 1971-09-27 1973-06-12
JP2000513061A (ja) * 1997-04-02 2000-10-03 シントロレウム コーポレーション ハイドレート回収のためのシステムおよび方法
JP2002501861A (ja) * 1998-01-30 2002-01-22 デン ノルスケ スタッツ オルジェセルスカプ エイ．エス Ｌｎｇ搬送システム

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2508417A3 (fr) * 2011-03-11 2013-01-23 Keppel Offshore&Marine Technology Centre Pte Ltd Systèmes d'installation en mer et procédés de production de gaz liquéfié, de stockage et de déchargement pour réduire et prévenir les dommages
US8864420B2 (en) 2011-03-11 2014-10-21 Keppel Offshore & Marine Technology Centre Pte Ltd Offshore systems and methods for liquefied gas production, storage and offloading to reduce and prevent damage
WO2016055525A1 (fr) * 2014-10-08 2016-04-14 Sbm Schiedam B.V. Méthanier et procédé de fabrication dudit méthanier
CN107074327A (zh) * 2014-10-08 2017-08-18 Sbm斯希丹有限公司 Lng运输船以及制造这种lng运输船的方法

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