Intelligent floating platform integrating deep-sea aquaculture and oil and gas extraction

Abstract

The present invention discloses an intelligent floating platform for integrating deep-sea aquaculture and oil and gas extraction, comprising a cylindrical FPSO and a deep-sea aquaculture cage. The cylindrical FPSO comprises a main cylinder and a platform motion reduction structure arranged outside the main cylinder. The deep-sea aquaculture cage comprises a cage frame, a net, a cage extension cylinder, and a cage motion reduction structure. The net is arranged on the side of the cage frame, and the cage motion reduction structure is arranged circumferentially outside the cage extension cylinder. The main cylinder and the platform motion reduction structure serve as the top support structure for the cage frame, while the cage extension cylinder and the cage motion reduction structure serve as the bottom support structure for the cage frame. The cage frame is provided with a side support structure connecting the top support structure to the bottom support structure. A central support structure composed of a retractable moon pool plate is provided within the cage frame. The present invention combines a cylindrical FPSO with a deep-sea aquaculture cage, leveraging a large floating platform to fully utilize ocean space and leverage the advantages of deep-sea aquaculture.

Description

Technical Field

[0001] The present invention relates to the technical field of floating platforms, and in particular to an intelligent floating platform integrating deep-sea aquaculture and oil and gas exploitation. Background Art

[0002] Floating Production Storage and Offloading (FPSO) vessels are key equipment for the extraction, processing, and storage of marine oil and gas resources. Currently, there are various types of FPSOs, including ship-shaped, octagonal, multi-cylinder, and hourglass FPSOs. Cylindrical FPSOs offer excellent roll, pitch, and bow performance, can utilize a multi-point mooring system, have low construction costs, are adaptable to a wide range of water depths, meet operational safety requirements, and meet marginal oilfield production requirements, thus possessing outstanding application value. Compared to traditional aquaculture, which suffers from space reduction, environmental degradation, and declining quality, deep-sea waters offer significant advantages, such as abundant fishery resources, excellent water quality, and a distance from land-based pollution and disease. Therefore, the development of deep-sea aquaculture is of great significance to fishery development, food supply, and even the national economy. However, deep-sea aquaculture currently faces challenges such as insufficient large-scale, platform-based, and integrated development, low economic returns, and immature equipment technology. Summary of the Invention

[0003] The purpose of the present invention is to address the problems in the existing technology and provide an intelligent floating platform that integrates deep-sea aquaculture and oil and gas extraction, thereby combining a cylindrical FPSO with a deep-sea aquaculture cage. Relying on a large floating platform, it fully utilizes the ocean space and gives full play to the advantages of deep-sea aquaculture.

[0004] The present invention is achieved as follows: an intelligent floating platform integrating deep-sea aquaculture and oil and gas extraction, comprising a cylindrical FPSO with a cylindrical structure and a deep-sea aquaculture cage; the cylindrical FPSO comprises a main cylinder and a platform motion reduction structure, and the platform motion reduction structure is arranged circumferentially on the outside of the main cylinder; the deep-sea aquaculture cage comprises a cage frame, a net, a cage extension cylinder and a cage motion reduction structure, the net is arranged on the cage frame, and the cage motion reduction structure is arranged circumferentially on the outside of the cage extension cylinder; the main cylinder and the platform motion reduction structure serve as the top support structure of the cage frame, the cage extension cylinder and the cage motion reduction structure serve as the bottom support structure of the cage frame, the cage frame is provided with a side support structure to connect the top support structure with the bottom support structure, and a middle support structure composed of a retractable moon pool plate is provided in the cage frame to ensure that the net does not interfere with the operation of the oil and gas production riser facilities.

[0005] The net is detachably mounted on the cage frame via a net mounting node, and the movement or fixation of the net mounting node can be controlled by a program. A net track for the movement of the net mounting node is arranged on the cage frame. During breeding, the position of the net mounting node on the net track is adjusted by a program to keep the net in a tensioned state, thereby ensuring that the size of the breeding volume remains unchanged. When the net is retracted or released, the net mounting node is controlled by a program to move or release the fixation on the net track, thereby realizing the automation of the net lifting and lowering.

[0006] Wherein, the side supports are composed of a plurality of columns, and the plurality of columns are arranged at intervals around the circumference of the cage frame.

[0007] Wherein, the deep-sea aquaculture cage is cylindrical, and the diameters of its upper and lower surfaces are the same as the diameter of the main cylinder.

[0008] Wherein, the cage motion reduction structure and the platform motion reduction structure have the same structure and / or shape.

[0009] Among them, the bottom diameter of the deep-sea aquaculture cage is the same as the diameter of the cage extension cylinder, and the top and bottom of the cage extension cylinder are provided with several openable or closed cage sea doors; the moon pool in the cage extension cylinder is frustum-shaped to prevent the oil and gas production riser facilities from colliding with the cage extension cylinder.

[0010] Among them, the platform motion reduction structure is a motion suppression structure with a rectangular cross-section composed of an inner ring damping plate, an outer ring damping plate, a top damping plate and a bottom damping plate. The bottom damping plate and the bottom plate of the main cylinder are located on the same horizontal plane; the top damping plate and the bottom damping plate are both provided with a number of openable or closed sea-access doors to realize the functional conversion of the platform motion reduction structure into a sea-accessible, closed or air-floating cabin.

[0011] The platform motion reducing structure is firmly connected to the main cylinder, and a narrow gap water channel is formed to increase the wetted surface area of the platform motion reducing structure and thus increase the mass of attached water.

[0012] Wherein, the connection mode of the net cage motion reducing structure and the net cage extension cylinder is the same as the connection mode of the platform motion reducing structure and the main cylinder.

[0013] Among them, the interior of the cylindrical FPSO is equipped with a cargo oil tank and a ballast tank, and a circular moon pool is opened in the middle of the main cylinder. The circular moon pool extends downward from the retractable moon pool plate to the cage extension cylinder to form a through structure to ensure that the oil and gas production riser facilities are directly connected from the seabed to the upper production deck.

[0014] The intelligent floating platform for integrated deep-sea aquaculture and oil and gas extraction of the present invention combines a cylindrical FPSO with a deep-sea aquaculture cage. On the one hand, it can increase the additional mass and improve the heave motion performance of the cylindrical FPSO; on the other hand, it can provide support for the deep-sea aquaculture cage, improve its stability and safety, and achieve the effect of 1+1>2. It fully utilizes the functions of different structures, fully utilizes the ocean space, and also increases the investment return of marine engineering equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a first axonometric schematic diagram of an intelligent floating platform for integrated deep-sea aquaculture and oil and gas extraction according to an embodiment of the present invention (the sea door is hidden and the net only shows the side portion).

[0016] Figure 2 This is a second axonometric schematic diagram of the intelligent floating platform for integrated deep-sea aquaculture and oil and gas extraction according to an embodiment of the present invention (the sea door is hidden and the net only shows the side portion).

[0017] Figure 3 Schematic diagram of a retractable moon pool of an intelligent floating platform integrating deep-sea aquaculture and oil and gas extraction according to an embodiment of the present invention.

[0018] Figure 4 This is a first axonometric schematic diagram of the net of the intelligent floating platform for integrated deep-sea aquaculture and oil and gas extraction according to an embodiment of the present invention (the top net is hidden).

[0019] Figure 5 This is a second axonometric schematic diagram of the net of the intelligent floating platform for integrated deep-sea aquaculture and oil and gas extraction according to an embodiment of the present invention (the top net is hidden).

[0020] Figure 6 This is a top view of a cylindrical FPSO, an intelligent floating platform integrating deep-sea aquaculture and oil and gas extraction, according to an embodiment of the present invention.

[0021] Figure 7 This is a top view of a deep-sea aquaculture cage of an intelligent floating platform that integrates deep-sea aquaculture and oil and gas extraction according to an embodiment of the present invention.

[0022] Figure 8 This is a schematic diagram of the net track of the deep-sea aquaculture cage of the intelligent floating platform integrating deep-sea aquaculture and oil and gas extraction according to an embodiment of the present invention.

[0023] Figure 9 This is a schematic diagram of the net installation nodes of the deep-sea aquaculture cage of the intelligent floating platform integrating deep-sea aquaculture and oil and gas extraction according to an embodiment of the present invention.

[0024] Figure 10 This is a schematic diagram of the deep-sea aquaculture cage of the intelligent floating platform integrating deep-sea aquaculture and oil and gas extraction before the net is lifted according to an embodiment of the present invention.

[0025] Figure 11 This is a schematic diagram of the net lifting process of the deep-sea aquaculture cage of the intelligent floating platform integrating deep-sea aquaculture and oil and gas extraction according to an embodiment of the present invention.

[0026] Figure Number:

[0027] 1-main cylinder, 2-platform motion reduction structure, 3-moon pool, 4-retractable moon pool plate, 5-cage lateral support, 6-net, 7-cage extension cylinder, 8-cage motion reduction structure, 9-sea gate, 10-net track, 11-net installation node. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0029] The present invention provides an intelligent floating platform integrating deep-sea aquaculture and oil and gas extraction, which integrates marine oil and gas extraction and deep-water aquaculture industries to achieve multifunctionality of the platform.

[0030] like Figures 1 to 11 As shown, the present invention provides an intelligent floating platform integrating deep-sea aquaculture and oil and gas extraction, such as Figure 1 、 Figure 2 As shown, it includes a cylindrical FPSO and a deep-sea aquaculture cage. The cylindrical FPSO includes a main cylinder 1, a platform motion reduction structure 2 arranged outside the main cylinder 1, and a platform motion reduction structure 2 is arranged in an annular direction outside the main cylinder 1 to improve the heave motion performance of the platform; the deep-sea aquaculture cage includes a cage frame, a net 6, a cage extension cylinder 7 and a cage motion reduction structure 8; the cage motion reduction structure 8 is arranged outside the cage extension cylinder 7; Figure 1 、 Figure 2 As shown, the cage frame includes a top support structure, a bottom support structure, a side support structure and a middle support structure, which play the role of fixing the net and resisting the impact of waves. The top support structure is the platform reduction structure and the main cylinder; the bottom support structure is the cage reduction structure and the cage extension cylinder; Figure 3 As shown, the middle support is a retractable moon pool plate 4, which is configured as a sleeve with a variable diameter to achieve the telescopic function, so as to facilitate the retraction and deployment of the net. At the same time, the moon pool plate can ensure that the net does not interfere with the operation of the oil and gas production riser facilities. The net 6 can be regarded as consisting of four parts: the top net, the bottom net, the middle net and the side net in the working state. Figure 4 、 Figure 5 As shown, for convenience, Figure 4 、 Figure 5The top mesh of the middle general is hidden.

[0031] In a preferred embodiment, the side support structure 5 is composed of multiple columns arranged at equal intervals around the cage; more preferably, six columns constitute the side support structure 5. Specifically, the top support structure comprises the bottom damping plate of the platform's motion reduction structure and the bottom plate of the main cylinder, while the bottom support structure comprises the top damping plate of the cage's motion reduction structure and the top plate of the cage's extension cylinder.

[0032] like Figure 1 、 Figure 2 As shown, in some embodiments, the main cylinder 1 is a cylindrical structure with an outer diameter of 39m and a molded depth of 40m. The main cylinder may be provided with cargo oil tanks and ballast tanks (not shown). The cargo oil tanks and ballast tanks can dynamically adjust the ballast water mass to provide the required buoyancy for the device, so that the overall draft of the intelligent floating platform remains unchanged.

[0033] like Figure 1 、 Figure 2 As shown, in some embodiments, a circular moonpool 3 with a diameter of 12m is defined within the main cylinder 1. A retractable moonpool plate 4 extends downward from the moonpool 3, which then connects to the cage extension cylinder 7. Preferably, the portion of the moonpool 3 within the cage extension cylinder 7 is truncated cone-shaped, with a top diameter of 12m and a bottom diameter of 18m, allowing oilfield production riser facilities to pass directly through the moonpool to the deck during offshore oil and gas extraction.

[0034] Preferably, the inner diameter of the platform reduction structure is 80m, the outer diameter is 100m, and the height is 10m. In some embodiments, the platform reduction structure is firmly connected to the main cylinder 1 and forms a gap water channel with a width of 1m. Figure 6 As shown in FIG, the water mass attached to the structure can be increased through the gap water channel, thereby increasing the natural period of heave and moving away from the range of the wave dominant period.

[0035] Preferably, the cage reduction structure having the same size, structure and function as the platform reduction structure is arranged on the outside of the cage extension cylinder 7 in the same manner. The cage reduction structure and the cage extension cylinder 7 also have a gap waterway with a width of 1m. Figure 7 As shown, the water mass attached to the structure can be further increased by the further gap water channel, thereby increasing the natural period of heave and moving away from the range of the dominant wave period.

[0036] In some embodiments, the cage motion reducing structure and the cage extension cylinder are connected in the same manner as the platform motion reducing structure and the main cylinder, for example, both are connected using radially arranged connecting brackets, wherein a plurality of radially arranged connecting brackets are arranged along the circumference or annular direction of the cage extension cylinder. Preferably, the connecting brackets are extensions of the bulkheads of the platform motion reducing structure or the cage motion reducing structure.

[0037] like Figure 6 and Figure 7 As shown, eight openable or closed sea-access doors 9 are provided at the top and bottom of the platform motion reduction structure 2, the cage motion reduction structure 8 and the cage extension cylinder 7, which are arranged at equal intervals in a circumferential direction. The opening and closing conditions can be intelligently adjusted according to the different states of the platform. When the platform is in position, the bottom of the platform motion reduction structure, the cage motion reduction structure and the cage extension cylinder 7 are open, the top is exhausted, the inside is filled with water and filled with seawater, forming a sea-access cabin; when the platform is in a towing or offshore installation state, the bottom of the platform motion reduction structure, the cage motion reduction structure and the cage extension cylinder 7 are sealed to form a closed floating cabin, or the top is compressed and the bottom is drained, and the inside is filled with air to form an air-floating cabin. When the sea-access door is opened, a vortex is induced at the opening to dissipate wave energy, increase the damping of the structure, and thus reduce the vertical motion response. For the convenience of illustration, Figure 1 、 Figure 2 Tonghai Gate is not shown here, so please note.

[0038] In some embodiments, the net is 40m high, the cage extension cylinder is 15m high, and the diameter of the deep-sea aquaculture cage and the cage extension cylinder 7 are the same as the diameter of the main cylinder 1 of the cylindrical FPSO.

[0039] In some embodiments, a cargo oil tank (not shown) and a ballast tank (not shown) are provided inside the cylindrical FPSO, and a circular moon pool is provided in the middle of the main cylinder. The circular moon pool extends downward from the retractable moon pool plate to the cage extension cylinder to form a through structure, so as to ensure that the oil and gas production riser facilities are directly connected from the seabed to the upper production deck.

[0040] like Figures 8 and 9As shown, in some embodiments, a net track 10 is arranged on the cage frame, which is used when the net is retracted to realize the intelligent lifting and lowering of the net. In some embodiments, the net 6 is detachably mounted on the cage frame through a net mounting node 11, and the movement or fixation of the net mounting node 11 can be controlled by a program. The cage frame is provided with a net track 10 for the net mounting node 11 to be moved or fixed. During breeding, the position of the net mounting node 11 on the net track 10 is adjusted by a program so that the net 6 is in a tensioned state to ensure that the size of the breeding volume remains unchanged; when the net is retracted, the net mounting node 11 is controlled by a program to move or release the fixation on the net track 10 to realize the automation of the lifting and lowering of the net 6.

[0041] like Figures 10 and 11 As shown, these two figures show schematic diagrams of the lifting of the net during intelligent net closure. The detachable net 6 is installed on the cage frame. During aquaculture, the net installation nodes can automatically adjust their positions to keep the net 6 in a tensioned state, ensuring that the size of the aquaculture volume remains unchanged. When the net is folded in or out, the net installation nodes 11 move on the net track 10 according to the set program, and the retractable moon pool plate 4 is automatically retracted, so that the net 6 can be pulled along the net track 10 from the moon pool 3 of the main cylinder 1 to the upper deck. The present invention enables the net installation nodes to be intelligently moved or fixed. In conjunction with the retractable moon pool plate, the net lifting can be intelligently realized, which improves the efficiency of the net lifting and saves manpower.

[0042] It should be noted that for cylindrical FPSOs, installing deep-sea aquaculture cages increases the mass of water attached to the structure, increasing viscous damping, reducing the platform's heave motion response and moving its natural period away from the range of the dominant wave period, which is beneficial for improving hydrodynamic performance to accommodate dry oil trees. For deep-sea aquaculture cages, the large size of cylindrical FPSOs provides sufficient area. Relying on the cylindrical FPSO, it saves resources and reduces construction difficulty, while effectively improving stability. The fully submersible design reduces the risk of structural damage from wind and waves. The combination of the two provides a mobile platform for aquaculture personnel, facilitating net collection and reducing workload, while also improving the utilization rate of seawater per unit area, saving construction costs, and thus increasing the economic benefits of marine oil and gas extraction and deep-sea aquaculture.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An intelligent floating platform integrating deep-sea aquaculture and oil and gas extraction, characterized by: The invention relates to a cylindrical FPSO and a deep-sea aquaculture cage comprising a cylindrical structure; the cylindrical FPSO comprises a main cylinder and a platform motion reduction structure, and the platform motion reduction structure is circumferentially arranged on the outside of the main cylinder; the deep-sea aquaculture cage comprises a cage frame, a net, a cage extension cylinder and a cage motion reduction structure, the net is arranged on the cage frame, and the cage motion reduction structure is circumferentially arranged on the outside of the cage extension cylinder; the main cylinder and the platform motion reduction structure serve as the top supporting structure of the cage frame, and the cage extension cylinder and the cage motion reduction structure serve as the bottom supporting structure of the cage frame. The cage frame is provided with a side support structure to connect the top support structure with the bottom support structure; a middle support structure composed of a retractable moon pool plate is provided in the cage frame to ensure that the net does not interfere with the operation of the oil and gas production riser facilities; the net is detachably mounted on the cage frame through a net mounting node, and the net mounting node can be controlled to move or fix through a program; a net track for moving or fixing the net mounting node is arranged on the cage frame; during breeding, the position of the net mounting node on the net track is adjusted through a program to make the net in a tensioned state. The net is kept in a stable state to ensure that the size of the aquaculture volume remains unchanged; when the net is retracted or released, the net installation node is controlled by a program to move or release the fixation on the net track to realize the automation of the net lifting; the diameter of the net cage extension cylinder is the same as the bottom diameter of the deep-sea aquaculture net cage, and the top and bottom of the net cage extension cylinder are provided with a plurality of openable or closed net cage sea doors; the moon pool in the net cage extension cylinder is frustum-shaped to prevent the oil and gas production riser facilities from colliding with the net cage extension cylinder; the platform reduction structure is composed of an inner damping plate, an outer damping plate, a top damping plate and a bottom damping plate. The motion suppression structure of a rectangular cross-section is composed of damping plates, and the bottom damping plate is located on the same horizontal plane as the bottom plate of the main cylinder; the top damping plate and the bottom damping plate are both provided with a number of openable or closed sea-access doors to realize the functional conversion of the platform motion reduction structure into a sea-accessible, closed or air-floating tank; the interior of the cylindrical FPSO is provided with a cargo oil tank and a ballast tank, and a circular moon pool is provided in the middle of the main cylinder, and the circular moon pool extends downward from the retractable moon pool plate to the cage extension cylinder to form a through structure to ensure that the oil and gas production riser facilities are directly connected from the seabed to the upper production deck.

2. The intelligent floating platform integrating deep-sea aquaculture and oil and gas extraction according to claim 1 is characterized in that: The side support structure is composed of a plurality of columns, and the plurality of columns are arranged at intervals around the circumference of the cage frame.

3. The intelligent floating platform integrating deep-sea aquaculture and oil and gas extraction according to claim 1 is characterized in that: The deep-sea aquaculture cage is cylindrical, and the diameters of the upper and lower surfaces thereof are the same as the diameter of the main cylinder.

4. The intelligent floating platform integrating deep-sea aquaculture and oil and gas extraction according to claim 1 is characterized in that: The cage motion reducing structure and the platform motion reducing structure have the same structure and / or shape.

5. The intelligent floating platform integrating deep-sea aquaculture and oil and gas extraction according to claim 1 is characterized in that: The platform motion reducing structure is firmly connected to the main cylinder, and a narrow gap water channel is formed to increase the wet surface area of the platform motion reducing structure and thus increase the mass of attached water.

6. The intelligent floating platform integrating deep-sea aquaculture and oil and gas extraction according to claim 1 is characterized in that: The connection mode of the net cage motion reducing structure and the net cage extension cylinder is the same as the connection mode of the platform motion reducing structure and the main cylinder.

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