CN203439237U - Production and mooring system of a floating oil production platform on the sea surface - Google Patents

Abstract

The utility model discloses a production and mooring system of a sea surface floating oil production platform, which comprises an underwater production platform, an underwater production system, a rigid vertical pipe, a tension mooring device, an underwater pile foundation and a flexible jumper pipe; the underwater production system comprises an underwater oil extraction device and a manifold center; the underwater production platform comprises an underwater oil production platform and a manifold platform, and the underwater oil production platform and the manifold platform are both located at positions 50-300 meters below the sea level; the number of the oil production platforms in water is at least three, and the oil production platforms are dispersedly arranged around the manifold platform. The utility model discloses with single production platform design among the prior art for the aquatic oil production platform and a manifold platform more than three, not only solved original aquatic oil production and equipped, the unable overall arrangement's in aquatic manifold and the aquatic manifold center problem, but also can part the overall arrangement with aquatic manifold and oil production equipment, make the design of each platform more specialized to realize the location of sea floating oil production platform and the optimization overall arrangement of each function of aquatic production system.

Description

Production and mooring system of a floating oil production platform on the sea surface

technical field

The utility model belongs to the field of ocean engineering equipment, and relates to a production and mooring system for a sea surface floating oil production platform working in an extremely deep sea environment.

Background technique

my country's extremely deep water areas in the South China Sea (water depth greater than 2,000 meters) are rich in oil and gas resources, but currently my country only has a full set of capabilities for exploration, development and production of oil and gas fields in water depths within 300 meters.

The technical difficulties faced by the development of oil and gas fields in the extremely deep water environment of the South China Sea mainly include the following aspects: first, the huge water depth leads to high requirements for the design, manufacture, installation and use of marine engineering equipment; second, the extremely deep sea environment is harsh, such as typhoon Invasion and other problems; Third, due to the limitation of water depth, the existing offshore floating oil production platforms have no cost-effective positioning technology, and usually need to use expensive dynamic positioning.

Chinese patent (patent number: ZL616548897.3) discloses a new type of ultra-deep water oil and gas engineering development system. The system is mainly composed of a single riser supporting buoy and underwater oil production equipment. Installed on tension moored submerged buoys to realize the development of ultra-deep water oil and gas fields. Since the system uses a single riser to support the buoy to support the oil production equipment, the size of the single buoy is limited in space; and in the extremely deep water environment, the positioning of the offshore floating oil production platform and the underwater production system mainly include the underwater oil production equipment , the water manifold and the water manifold center cannot utilize a single buoy to carry out a rational layout, and the disclosed marine engineering technology still has no effective solution.

Contents of the invention

In order to solve the above-mentioned problems existing in the prior art, the utility model is to design a device that can effectively solve the problem that the underwater production system encountered in the extremely deep sea environment is difficult to rationally arrange, and at the same time provide economical and effective positioning for the floating oil production platform on the sea surface. The production and mooring system of the offshore floating oil production platform.

In order to achieve the above object, the technical solution of the present utility model is as follows: a production and mooring system of a floating oil production platform on the sea surface, including an underwater production platform, an underwater production system, a rigid riser, a tension mooring device, an underwater pile foundation and a flexible jumper pipe;

The water production system includes water production equipment and a manifold center;

The underwater production platform includes an underwater oil production platform and a manifold platform, the underwater oil production platform is used to support rigid risers and underwater oil production equipment, and the described manifold platform is used to support the manifold center; the underwater oil production platform Both the platform and the manifold platform are located at 50-300 meters below sea level, and are fixed on the seabed by tension mooring devices; there are at least three underwater oil production platforms, which are scattered and arranged on the same level around the manifold platform; The water production platform and the manifold platform are connected through flexible jumper pipes;

The pile foundation in water is pre-installed on the oil production platform in water.

The horizontal plane where the underwater oil production platform of the present invention is located is on a different horizontal plane or the same horizontal plane as the manifold platform.

Working method of the present utility model, comprises the following steps:

A. Before the floating oil production platform on the sea surface reaches the working sea area, pre-install the oil production platform in the water and the manifold platform, and connect the oil production platform in the water to the manifold platform through the flexible jumper; After the sea area, the floating oil production platform on the sea surface is moored on the pile foundation in the water through the mooring cable; the working positioning of the floating oil production platform on the sea surface is completed; the manifold center is connected back to the floating oil production platform on the sea surface through a flexible riser;

B. The oil and gas resources produced by the oil production equipment located on the water production platform are transported to the manifold center installed on the manifold platform through the flexible jumper pipe, and the manifold center completes the measurement of the oil and gas resources produced by each water production platform, After pooling and pressurization, it is transported to the floating oil production platform on the sea surface through a flexible riser.

Compared with the prior art, the utility model has the following beneficial effects:

1. Since the utility model designs the single production platform in the prior art as more than three underwater oil production platforms and one manifold platform, it not only solves the problem that the original underwater oil production equipment, underwater manifolds and underwater manifold centers cannot be arranged Moreover, the underwater manifold and oil production equipment can be arranged separately to make the design of each platform more professional, so that the positioning of the floating oil production platform on the sea surface and the optimal layout of various functions of the underwater production system can be realized.

2. Since the underwater oil production platform of the present utility model is located at a position 50-300 meters below the sea level, shallow water mooring equipment and technology can be used to realize the positioning operation of the floating oil production platform on the sea surface in an extremely deep sea environment, which reduces the production cost of the equipment. costs and installation costs.

3. The underwater oil production platform adopted by the utility model has two functions, one is to provide a platform for the installation and operation of the oil production equipment, and the other is to provide a working platform for the mooring equipment. Since the oil production platform in water has the functions of an oil production platform and a mooring platform at the same time, the integration of oil production equipment and mooring equipment has been realized.

4. The integrated system of underwater production and mooring proposed by this utility model can adopt the underwater production system operating in shallow sea environment, the floating oil production platform on the sea surface and the mooring system to realize the protection of oil and gas resources in the deep sea environment. development, so it has significant technical economy.

Description of drawings

The utility model has 2 accompanying drawings, wherein:

Fig. 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is the working schematic diagram of the utility model.

In the figure: 1. Oil production platform in water, 2. Cable A, 3. Rigid riser, 4. Oil production equipment in water, 5. Flexible jumper pipe, 6. Manifold platform, 7. Cable B, 8. Manifold center, 9 , flexible riser, 10, floating production storage and offloading device, 11, pile foundation in water, 12, mooring line, 13, sea level, 14, seabed.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1, a production and mooring system for a floating oil production platform on the sea surface includes an oil production platform in water 1, a manifold platform 6, oil production equipment in water 4, a manifold center 8, a rigid riser 3, cables A2, and cables B7 and flexible jumper 5. Both the underwater oil production platform 1 and the manifold platform 6 are located 50-300 meters below the sea level 13, so as to avoid the influence of huge wind and waves on the sea surface. The underwater oil production platform 1 and the manifold platform 6 are tension moored on the seabed 14 through the cables A2 and B7 respectively. The underwater oil production platform 1 is used to support the rigid riser 3 and the underwater oil production equipment 4 , and the manifold platform 6 is used to support the manifold center 8 . The underwater oil production platform 1 and the manifold platform 6 are connected by a flexible jumper 5 . The water production platforms 1 are scattered around the manifold platform 6 .

In particular, in order to meet the mooring design requirements of offshore floating oil production platforms, the number of underwater oil production platforms 1 is at least three (only two underwater oil production platforms 1 are shown in FIG. 1 ).

As shown in FIG. 1 , the underwater pile foundation 11 is pre-installed on the underwater oil production platform 1 .

As shown in Figure 2, the sea surface floating oil production platform takes the floating production, storage and unloading device 10 as an example, and introduces the working method of the present utility model as follows:

A. After the pre-installation of the utility model is completed, the floating production, storage and unloading device 10 sails into the target sea area, the mooring cable 12 is moored on the pile foundation 11 in the water, and the working positioning of the floating production, storage and unloading device 10 is completed ; The manifold center 8 is connected back to the floating production storage and offloading device 10 through the flexible riser 9;

B. Subsea oil and gas resources reach the underwater oil production equipment 4 located on the underwater oil production platform 1 through the rigid riser 3;

C. The oil and gas resources produced by the underwater oil production equipment 4 are transported to the manifold center 8 located on the manifold platform 6 through the flexible jumper 5;

D. After the manifold center 8 completes the measurement, collection and pressurization of the oil and gas resources produced by each oil production platform 1 in water, it is finally transported to the floating production storage and offloading device 10 through the flexible riser 9 .

Claims (2)

1. A production and mooring system for a floating oil production platform on the sea surface, characterized in that it includes an underwater production platform, an underwater production system, a rigid riser (3), a tension mooring device, an underwater pile foundation (11) and a flexible span takeover(5); The water production system includes water production equipment (4) and a manifold center (8); The underwater production platform includes an underwater oil production platform (1) and a manifold platform (6), and the underwater oil production platform (1) is used to support rigid risers (3) and underwater oil production equipment (4). The manifold platform (6) is used to support the manifold center (8); the underwater oil production platform (1) and the manifold platform (6) are both located at 50-300 meters below the sea level (13). The mooring device is fixed on the seabed (14); there are at least three underwater oil production platforms (1), which are scattered on the same level around the manifold platform (6); the underwater oil production platforms (1) and the pipeline The sink platforms (6) are connected by flexible jumper pipes (5); The underwater pile foundation (11) is pre-installed on the underwater oil production platform (1). 2. The production and mooring system of a floating oil production platform on the sea surface according to claim 1, wherein the water production platform (1) is located at a different level from the manifold platform (6). level or on the same level.

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