JP2000062685A - Method and device for loading on sea - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably perform transferring work on the sea in the optional sea area by eliminating possibilities of collision of a floating-type production platform and a shuttle tanker, in a device for transference on the sea. SOLUTION: This device for loading on the sea, for transferring floating materials on the sea between a floating-type platform 1 moored by a single point mooring device 2 and a shuttle tanker 3 is provided with fender supporting frames 4 having the base ends pivotally supported on the side wall part of the floating-type platform, the tips for supporting fenders 6, and the intermediate parts for supporting floating bodies; mooring ropes 10 for mooring the shuttle tanker 3 to the floating type platform 1 by drawing it toward the fender 6; and a floating material transporting means such as a loading hose arranged on either the floating-type platform 1 or the shuttle tanker 3 and for transporting floating materials from one side to the other side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for transferring a fluid between a floating platform moored by a one-point mooring apparatus and a shuttle tanker through a fluid pipe transport means from one of the floating platform and the shuttle tanker to the other. The present invention relates to an offshore transfer method for transferring to and from and an offshore transfer apparatus for performing the method.

[0002]

2. Description of the Related Art First, a conventional offshore transfer method and apparatus will be described. In recent years, the targets of offshore oilfield development have been expanding to deeper water areas than in the case of conventional offshore oilfield development, and to sea areas under severe environmental conditions such as waves. Therefore, in order to secure a high operating rate of the oil production system, it is necessary to build a wave-resistant offshore shipping system for the purpose of improving the operating rate when shipping from a floating production platform (FPSO) to a shuttle tanker. is necessary.

FIG. 4 is a plan view of a conventional offshore transfer device, and FIG.
[Fig. 6] is a plan view of a conventional offshore transfer device different from that of Fig. 4. First, in FIG. 4, a shuttle tanker 03 is moored behind a floating production platform (FPSO) 01 by a mooring system called a tandem system. In such a mooring system, when the disturbance acts from the same direction, for example, the floating production platform 01 and the shuttle tanker 03 are in a line in parallel with the disturbance direction, and maintain a stable posture. be able to.

However, in FIG. 4, the relative positional relationship between the floating production platform 01 and the shuttle tanker 03 becomes unstable when the disturbance is small or when the disturbance directions of the wind, the wave and the tidal current are greatly different from each other. The floating production platform 01 and the shuttle tanker 03 may collide with each other. For this reason, support from work boats and shuttle tankers using thruster devices, etc. 03
It is necessary to carry out a high level position maintenance work.

In FIG. 5, shuttle tanker 03
However, by a mooring method called a side-by-side method, the mooring is horizontally attached to the floating production platform 01. As described above, when the shuttle tanker 03 is moored on the floating production platform 01 in a horizontal state, the marine vessel maneuvering work of the floating production platform 01 and the shuttle tanker 03 is very easy. However, the mooring method shown in FIG. 5 is limited to the calm waters, and if stormy weather continues, offshore shipping work cannot be performed for several days. In such a case, the oil storage amount of the floating production platform 01 can be reduced. May exceed the limit, and as a result, oil production must be stopped and downtime may occur.

[0006]

As described above, in the conventional offshore transfer method and apparatus, the floating tank such as the floating production platform and the shuttle tanker are caused by the disturbance due to wind, waves, tidal current, etc. The relative positional relationship becomes unstable and the floating platform and the shuttle tanker may collide with each other. Advanced position maintenance work was required, the work area was limited to the calm sea area, and due to continued stormy weather, the above-mentioned offshore loading work and other offshore transfer operations could not be performed for a long time.

In view of the above, the present invention provides a floating platform without the need for supporting a work boat and maintaining a particularly high position of a shuttle tanker by a thruster device when there is a disturbance due to wind, waves, tidal current, etc. It is possible to keep the relative positional relationship with the shuttle tanker always stable and constant, thereby eliminating the risk of collision between the floating production platform and the shuttle tanker. An offshore transfer method and an offshore transfer device capable of stably continuing offshore transfer work even if stormy weather continues in any sea area without limiting the working sea area to a calm sea area. It is what

[0008]

In order to solve the above-mentioned problems, the offshore transfer method according to the present invention is so arranged that the one-point mooring can be carried out freely by the steering means about the one-point mooring device. An offshore transfer method for transferring a fluid between a floating platform moored by a device and a shuttle tanker through a fluid tube transporting means, wherein the port of the shuttle tanker to the floating platform and the flow. When transferring animals, first, mooring lines are stretched between the floating platform and the shuttle tanker, and the shuttle tanker is rocked at least vertically with its base end on the side wall of the floating platform. It can be freely pivoted and can be brought into contact with the side wall surface of the shuttle tanker at the tip end portion so as to be relatively movable along the side wall surface. Pulling to the fender at the tip of the fender support frame that is supported on the ocean without sinking due to the buoyancy of the buoyancy body mounted on the buoyancy body mounting part that supports the ender and between the base end part and the fender. The shuttle tanker is moored to the floating platform via the fender support frame. Then, while maintaining the relative positional relationship between the floating platform and the shuttle tanker so as not to interfere with the transfer work, at least one of the floating platform and the shuttle tanker is maintained. The fluid is transferred from one of the floating production platform and the shuttle tanker to the other through the fluid pipe transportation means provided.

Further, the offshore transfer apparatus of the present invention is an offshore transfer apparatus for carrying out the above-described offshore transfer method, and the offshore transfer apparatus can be freely operated mainly by a steering means by a single point mooring device. An offshore transfer device for transferring a fluid on the sea between a floating platform moored by the above-mentioned one-point mooring device and a shuttle tanker so that it can be steered. Is pivotally supported at least vertically on the side wall of the platform
A tip end supports a fender capable of abutting relative to the side wall surface of the shuttle tanker along the side wall surface, and is mounted on a buoyant body mounting portion between the base end portion and the fender and at least a fender. The fender support frame that supports a buoyant body that generates the buoyancy required to hold the support frame on the sea without sinking, and the floating of the shuttle tanker that is disposed on at least one of the floating platform and the shuttle tanker. The suspension tanker is stretched between the floating platform and the shuttle tanker during the work of porting the platform and transferring the fluid, and pulls the shuttle tanker to the fender supported by the tip of the fender support frame. The shuttle tanker to the fender A mooring line moored to the floating platform via a support frame, and from one to the other between the floating platform and the shuttle tanker disposed on at least one of the floating platform and the shuttle tanker. And a fluid product pipe transporting means for transporting the fluid product by pipe.

As described above, the present invention can be applied to an offshore transfer device for loading petroleum collected from a submarine oilfield from a floating platform to a shuttle tanker on the ocean, and for example, to a deep sea of carbon dioxide gas. It can also be applied to an offshore transfer device for transferring carbon dioxide from a carbon dioxide carrier to a carbon dioxide input platform when the carbon dioxide is loaded into the tank.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 is a plan view of an offshore transfer apparatus according to one embodiment of the present invention, FIG. 2 is a side view of the offshore transfer apparatus according to the embodiment of FIG. 1, and FIG. 3 is different from FIG. 1 of the present invention. It is a top view of the offshore transfer apparatus which concerns on another embodiment.

First, in FIG. 1 and FIG. 2, the offshore transfer device is, for example, a floating production platform (FPSO).
And a single point mooring device 2 to which a pumping oil pipe is connected by a steering means such as a swiveling thruster 9 capable of swiveling around an up-down axis. An offshore transfer device for transferring a fluid such as oil on the ocean between the floating platform 1 moored by the mooring device 2 and the shuttle tanker 3, and the base end portion is configured as a floating production platform. The floating platform 1 is pivotally supported on the side wall of the floating platform 1 so as to be swingable in the vertical direction, and can be brought into contact with the side wall of the shuttle tanker 3 at its tip end so as to be relatively movable along the side wall. A fender 6 such as a fender is supported, and the base end portion and the fender 6 are supported.
And a floating platform 1 and a shuttle, which are mounted on a buoyancy body mounting portion between the fender support frame 4 and a buoyancy body 7 which generates a buoyancy force necessary for holding the fender support frame 4 on the sea without sinking. At least one of the tankers 3, for example, as shown in the figure, is arranged on the side of the floating platform 1 and is connected to the floating platform 1 of the shuttle tanker 3 and when transferring oil as a fluid, the floating production platform 1 and the shuttle. The shuttle tanker 3 is stretched between the tankers 3 and attracts the shuttle tanker 3 to the fender 6 supported by the tip of the fender support frame 4 to moor the shuttle tanker 3 to the floating platform 1 via the fender support frame 4. Mooring line 10 and floating platform And a from arm 1 side to the shuttle tanker 3 side and the loading hose 8 petroleum supported by the loading boom 5 and the loading boom 5 as fluids pipe transport means for the pipe transport of the fluids.

As described above, the floating platform 1 configured as a floating production platform is moored to the one-point mooring device 2 to which the oil pump pipe is connected. On the side wall of the floating platform 1, a fender 6 such as a roller type rubber fender at the tip and a link type support frame 4 having a buoyant body 7 below are pivotally supported. Further, on the deck of the floating platform 1, a loading boom 5 for mounting a loading hose 8 connected to a transfer pipe arranged from an oil storage tank provided inside the floating platform 1 is arranged. A swivel thruster 9 is arranged on the bottom of the floating platform 1.

In FIGS. 1 and 2, when carrying out a crude oil loading operation as a transfer operation, first, a mooring line 10 is stretched between the floating platform 1 and the shuttle tanker 3, and the shuttle tanker 3 and the fender are fixed. The shuttle tanker 3 is moored to the floating production platform 1 via the fender support frame 4 by pulling it toward the fender 6 at the tip of the support frame 4, and steering by the steering means such as the thruster 9 of the floating platform 1. And the shuttle 18 of the shuttle tanker 3 and the propeller 17
A loading hose 8 serving as a fluid pipe transportation means arranged on the floating platform 1 side while maintaining the relative positional relationship between the two by a marine vessel manipulating means including a thruster 19 and the like so as not to hinder the transfer work. Through, the crude oil as a fluid is transferred from the floating production platform 1 to the shuttle tanker 3.

As described above, when the crude oil is loaded on the shuttle tanker 3, the shuttle tanker 3 is moored by the mooring line 10 with the link type support frame serving as the fender support frame 4 sandwiched on the side of the floating platform 1. . Then, the loading arm 5 is extended, the loading hose 8 is lowered, the floating platform 1 and the shuttle tanker 3 are connected by the loading hose 8, and the pump in the floating production platform 1 is driven to feed oil.

At this time, the space between the floating platform 1 and the shuttle tanker 3 is appropriately maintained by the fender support frame 4 such as a link type support frame, and the movement of the link of the fender support frame 4 and the roller type rubber fender are provided. The rotational movement of the fender 6 absorbs a large relative movement between the floating production platform 1 and the shuttle tanker 3.

1 and 2, when the crude oil has been loaded, the mooring line 10 is separated from the shuttle tanker 3. When the mooring line 10 is separated from the shuttle tanker 3, the shuttle tanker 3 separates from the floating platform 1. The fender support frame 4 such as a link type support frame is supported by a submerged buoyant body 7 having a small wave force, and holds the fender 6 at an appropriate height above the water surface.
Prepare for the arrival of the next shuttle tanker.

Next, referring to FIG. 3, a floating platform 11 configured as a floating liquefied natural gas production platform (LNG FPSO) is moored to a one-point mooring device 2 to which a lifting gas pipe is connected. The floating platform 11 configured as a floating liquefied natural gas production platform includes a liquefied natural gas refining device 12 for liquefying and refining natural gas, a liquefied natural gas storage tank 14 for storing purified liquefied natural gas, and a liquefied natural gas. A protective wall 15 for partitioning the gas purifier 12 and the liquefied natural gas storage tank 14 is provided. The configuration of the other parts is similar to that of the floating production platform 1 of FIG.

In FIG. 3, a liquefied natural gas (LNG) shuttle tanker, which is configured as a liquefied natural gas tank 1
6, liquefied natural gas (LNG) is supplied to the shuttle tanker 13 in which the propeller 17, the rudder 18, the thruster 19 and the like are arranged.
At the time of loading, a shuttle tanker 13, which is a liquefied natural gas shuttle tanker, is moored by a mooring line 10 with a fender support frame 4 such as a link type support frame sandwiched in the lateral rearward direction of the floating platform 11. Then, the loading arm 5 is extended, the loading hose is lowered, and the floating platform 11 that is a floating liquefied natural gas production platform and the shuttle tanker 13 that is a liquefied natural gas shuttle tanker are connected by a loading hose, and the floating platform 1
Liquefied natural gas (L
NG) is transferred from the floating platform 11 which is a floating liquefied natural gas production platform to a shuttle tanker 13 which is a liquefied natural gas shuttle tanker.

The transfer device shown in FIG. 3 is an example of a device for shipping liquefied natural gas (LNG), but as is clear from FIG. 3, it is a floating liquefied natural gas production platform. In the floating platform 11, the liquefied natural gas storage tank 14 is separated from the liquefied natural gas refining device 12 using a compressor or a gas turbine by a protective wall 15 to be isolated. The liquefied natural gas tank 16 mounted on the shuttle tanker 13 which is a liquefied natural gas shuttle tanker also has the protective wall 1
Since it is moored so as to be located at the rear side of the floating platform 11 which is the floating liquefied natural gas production platform isolated by 5, it is extremely effective in disaster prevention.

The transfer device shown in FIG. 3 adopts an advantage of the tandem system capable of permitting a relative movement between the floating platform 11 and the shuttle tanker 13 in waves to a considerable extent. It can also be effectively used in a stormy weather for a shuttle tanker for shipping oil. However, in the case of the transfer device shown in FIG. 3, the floating platform 11 that is a floating liquefied natural gas production platform and the shuttle tanker 13 that is a liquefied natural gas shuttle tanker are restrained in the directions in which they tend to separate from each other. Since the force is weak, it is necessary to apply a force in a direction to bring the floating platform 11 and the shuttle tanker 13 closer to each other, for example, by the thruster 19 or the like.

[0022]

(1) First of all, according to the offshore transfer method of the present invention, the one-point mooring device is moored so that the steering means can freely operate around the one-point mooring device. What is claimed is: 1. An offshore transfer method for transferring a fluid between a floating platform and a shuttle tanker through a fluid pipe transporting means, the porting of the shuttle tanker to the floating platform and the transfer of the fluid. At this time, mooring lines are stretched between the floating platform and the shuttle tanker so that the shuttle tanker has a base end pivotally supported at least vertically in the side wall of the floating platform and a tip end. In the above-mentioned shuttle tanker, a side wall surface of the shuttle tanker is supported and a fender capable of abutting relative to the side wall surface is movably supported, The buoyancy body mounted on the buoyancy body between the fender and the buoyancy body is pulled by the buoyancy of the buoyancy body and pulled toward the fender at the tip of the fender support frame held on the sea without sinking to the fender to the floating platform. The floating platform is moored via a support frame, and the floating platform is maintained while maintaining the relative positional relationship between the floating platform and the shuttle tanker so as not to interfere with the transfer work. And, since the fluid is transferred from one of the floating production platform and the shuttle tanker to the other through the fluid pipe transportation means arranged in at least one of the shuttle tankers, wind, waves, and tidal currents In the event of external disturbances, etc., support for work boats and thruster devices Even without a special advanced position holding the work of the shuttle tanker by, it is possible to keep the relative positional relationship between the floating platform and the shuttle tanker at all times a stable constant relative positional relationship,
The risk of collision between the floating production platform and the shuttle tanker is eliminated, and even if stormy weather continues in any sea area without limiting the work area to the calm sea area, the offshore transfer work can be continued stably. A transfer method is obtained (Claim 1). (2) Next, according to the offshore transfer apparatus of the present invention, the floating platform moored by the one-point mooring device so that the steering means can freely steer around the one-point mooring device. An offshore transfer device for transferring a fluid to and from a shuttle tanker on the sea, the base end of which is pivotally supported at least vertically in a side wall of the floating platform, and the tip of The shuttle tanker supports a fender that can come into contact with the side wall surface of the shuttle tanker so as to be movable relative to the side wall surface, and is attached to a buoyant body mounting portion between the base end portion and the fender and sinks at least the fender support frame. The same fender support frame that supports a buoyant body that generates the buoyancy necessary to hold it on the sea without causing the floating platform and The shuttle tanker is arranged on at least one of the shuttle tankers and is stretched between the floating platform and the shuttle tanker when the shuttle tanker is brought into contact with the floating platform and the fluid is transferred, and the shuttle tanker is supported by the fender. A mooring line that pulls the shuttle tanker to the fender supported by the tip of the frame to moor the shuttle tanker to the floating platform via the fender support frame, and at least one of the floating platform and the shuttle tanker. Since there is a fluid pipe transport means for transporting the fluid from one side to the other between the floating platform and the shuttle tanker, there is no disturbance due to wind, waves, tidal current, etc. Support of work boats and It is possible to maintain a stable relative positional relationship between the floating platform and the shuttle tanker at all times without the need to perform a particularly high-level position maintenance work for the shuttle tanker using a shuttle device. It is possible to eliminate the risk of collision with a tanker, and not to limit the work area to the calm water area, so even if stormy weather continues in any sea area, the sea transfer work can be continued stably. A device is obtained (claim 2).

[Brief description of drawings]

FIG. 1 is a plan view of an offshore transfer device according to an embodiment of the present invention.

FIG. 2 is a side view of the offshore transfer device according to the embodiment of FIG.

FIG. 3 is a plan view of an offshore transfer device according to an embodiment different from FIG. 1 of the present invention.

FIG. 4 is a plan view of a conventional offshore transfer device.

FIG. 5 is a plan view of a conventional offshore transfer device different from that of FIG. 4;

[Explanation of symbols]

01 floating production platform 02 single point mooring 03 shuttle tanker 05 loading boom 06 fender 08 loading hose 010 mooring line 1 floating platform configured as a floating production platform 2 single point mooring device 3 shuttle tanker 4 fender support frame 5 fluid pipe Loading boom that constitutes the transportation means 6 Fender 7 Buoyant body 8 Fluid hose that constitutes the transportation means 9 Thruster 10 Mooring line 11 Floating platform 12 configured as a floating production platform for liquefied natural gas (LNG) production 12 Liquefaction Natural gas (LNG) refining equipment 13 Liquefied natural gas (LNG) Shuttle tanker configured as a shuttle tanker 14 Liquefied natural gas (LNG) storage tank 15 Protective wall 16 Liquefied sky Gas (LNG) tank 17 propeller 18 rudder 19 thrusters

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yojiro Wada             5-717-1, Fukahori-cho, Nagasaki-shi Mitsubishi Heavy Industries             Business Nagasaki Institute F-term (reference) 3E083 BB02 BB20

Claims (2)

[Claims] 1. A means for transporting a fluid pipe between a floating platform moored by the one-point mooring device and a shuttle tanker so that the one-point mooring device can be freely steered around the one-point mooring device. An offshore transfer method for transferring a fluid through the floating tank, wherein a mooring line is stretched between the floating platform and the shuttle tanker when the shuttle tanker is brought into contact with the floating platform and when transferring the fluid. The shuttle tanker has a base end pivotally supported on the side wall of the floating platform so as to be swingable at least in the vertical direction, and the tip end of the shuttle tanker moves relative to the side wall of the shuttle tanker along the side wall. It was attached to the buoyancy body attachment part between the base end part and the fender, supporting the fender that can freely come into contact with it. The shuttle tanker is moored to the floating platform via the fender support frame by pulling it toward the fender at the tip of the fender support frame held on the sea without sinking due to the buoyancy of the buoyant body. The floating platform is arranged on at least one of the floating platform and the shuttle tanker while maintaining the relative positional relationship between the floating platform and the shuttle tanker so as not to hinder the transfer work. The offshore transfer method, wherein the fluid is transferred from one of the floating production platform and the shuttle tanker to the other through the fluid pipe transportation means. 2. An offshore transfer apparatus for carrying out the offshore transfer method according to claim 1, wherein the offshore transfer apparatus is freely steered by a steering means about a one-point mooring device. An offshore transfer device for transferring a fluid on the sea between a floating platform moored by the one-point mooring device and a shuttle tanker so that a base end portion thereof is a side wall portion of the floating platform. A fender that is pivotally supported at least vertically in the vertical direction and that can abut on the side wall surface of the shuttle tanker at the tip end portion so as to be relatively movable along the side wall surface, and the base end portion and the fender. A fender supporting a buoyancy body which is mounted on a buoyancy body mounting portion between and and generates a buoyancy force necessary for holding at least the fender support frame on the sea without sinking. A support frame is provided on at least one of the floating platform and the shuttle tanker, and is placed between the floating platform and the shuttle tanker when the shuttle tanker is brought into contact with the floating platform and the fluid is transferred. A mooring line that is provided to pull the shuttle tanker toward the fender supported by the tip of the fender support frame and moor the shuttle tanker to the floating platform via the fender support frame, And a fluid pipe transporting means disposed on at least one of the floating platform and the shuttle tanker to transport the fluid from one to the other between the floating platform and the shuttle tanker. Features , Off-shore transfer device.