Single-point mooring device and floating type production oil storage and unloading equipment

Abstract

The utility model relates to the technical field of offshore oil production, in particular to a single-point mooring device and floating type production oil storage and unloading equipment. The single-point mooring device is used for mooring an offshore floating body and comprises a pile column, a clamping ring and a mooring chain. One end of the pile is fixed on the seabed, and the other end extends out of the sea level. A first through hole is formed in the clamping ring, and the clamping ring is connected to the pile in a sleeving mode through the first through hole. One end of the fastening chain is connected with the offshore floating body, the other end of the fastening chain is connected with the clamping ring, and the length of the fastening chain is larger than the distance between the outer wall of the clamping ring and the offshore floating body. The single-point mooring device is simple in structure, flexible connection between the offshore floating body and the single-point mooring device can be achieved through the arrangement of the piles, the clamping rings and the mooring chains, and then rolling and pitching of the offshore floating body can be controlled within a limited distance range on the premise that the offshore floating body is moored. The single-point mooring device is simple in structure, easy to assemble and capable of improving operation efficiency and saving cost.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore oil production, in particular to a single-point mooring device and floating production storage and unloading equipment. Background Art

[0002] FPSO (Floating Production Storage and Offloading, FPSO), also known as floating production storage and offloading equipment, is also known as an offshore oil plant. FPSO has the functions of production, oil storage and oil unloading. It usually forms a complete production system with underwater oil production equipment and shuttle tankers. It is an important product in marine engineering ships. Due to its advantages of large oil storage, low investment and transferability, FPSO has developed rapidly in recent years.

[0003] FPSO includes a single-point mooring device and an offshore floating body. The offshore floating body is moored to the sea surface through the single-point mooring device, so that the offshore floating body can be displaced within a certain range on the sea surface to adapt to the complex environment on the sea surface.

[0004] The single-point mooring devices in the prior art include catenary anchor leg type, tower type and single anchor leg type. The single-point mooring devices of the above structural types are complex in structure and expensive, and workers spend time and effort during installation, which reduces work efficiency.

[0005] Therefore, it is urgent to design a single-point mooring device and a floating production storage and offloading equipment to solve the above technical problems. Utility Model Content

[0006] The first purpose of the utility model is to provide a single-point mooring device, which has a simple structure, is easy to install, can improve operating efficiency and save costs.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] The utility model provides a single-point mooring device for mooring an offshore floating body, the single-point mooring device comprising:

[0009] A pile, one end of which is fixed to the seabed and the other end of which protrudes above the sea level;

[0010] A snap ring, wherein the snap ring is provided with a first through hole, and the snap ring is sleeved on the pile through the first through hole;

[0011] A mooring chain, one end of which is connected to the offshore buoy, and the other end of which is connected to the clasp, and the length of which is greater than the distance between the outer wall of the clasp and the offshore buoy.

[0012] As an optional technical solution for a single-point mooring device, the clamp is also provided with a second through hole, one end of the mooring chain is connected to the offshore buoy, and the other end of the mooring chain passes through the second through hole and is connected to the offshore buoy, and half the length of the mooring chain is greater than the distance between the outer wall of the clamp and the offshore buoy.

[0013] As an optional technical solution for a single-point mooring device, the mooring chain and the second through hole are both provided in plurality, and the mooring chains and the second through holes are provided in a one-to-one correspondence.

[0014] As an optional technical solution for a single-point mooring device, a plurality of the second through holes are evenly arranged about the axis of the first through hole.

[0015] As an optional technical solution for a single-point mooring device, a cushion block is further provided between the clamp ring and the pile column, one end of the cushion block abuts against the inner wall of the first through hole, and the other end of the cushion block abuts against the pile column.

[0016] As an optional technical solution for a single-point mooring device, the single-point mooring device also includes a connecting rod, which is arranged on the offshore buoy, one end of the mooring chain is connected to the connecting rod, and the other end is connected to the clamping ring.

[0017] As an optional technical solution for a single-point mooring device, the single-point mooring device also includes a connecting rod, which is arranged on the offshore buoy, one end of the connecting rod protrudes from the upper end surface of the offshore buoy, and the other end protrudes from the lower end surface of the offshore buoy, one end of the mooring chain is connected to one end of the connecting rod, and the other end of the mooring chain is connected to the other end of the connecting rod.

[0018] As an optional technical solution for a single-point mooring device, the connecting rods are provided in plurality, and the connecting rods and the mooring chains are provided in one-to-one correspondence.

[0019] The second purpose of the utility model is to provide a floating production storage and offloading equipment, which has a simple structure, low cost, is easy to install, and improves operating efficiency.

[0020] To achieve this purpose, the utility model adopts the following technical solutions:

[0021] The utility model provides a floating production storage and offloading equipment, which comprises an offshore buoy and the above-mentioned single-point mooring device, wherein the single-point mooring device is connected to the offshore buoy so that the single-point mooring device moors the offshore buoy.

[0022] As an optional technical solution for floating production storage and offloading equipment, the offshore buoy is provided with a mounting hole, one end of the pile column passes through the mounting hole and is fixed to the seabed, and the clamping ring is located in the mounting hole.

[0023] The beneficial effects of the utility model include at least:

[0024] The utility model provides a single-point mooring device, which is used for mooring an offshore floating body. The single-point mooring device comprises a pile column, a clasp and a mooring chain. One end of the pile column is fixed to the seabed, and the other end extends out of the sea level. The clasp is provided with a first through hole, and the clasp is sleeved on the pile column through the first through hole. One end of the mooring chain is connected to the offshore floating body, and the other end is connected to the clasp, and the length of the mooring chain is greater than the distance between the outer wall of the clasp and the offshore floating body. The single-point mooring device has a simple structure. Through the arrangement of the pile column, the clasp and the mooring chain, the offshore floating body and the single-point mooring device can be flexibly connected, and then the roll and pitch of the offshore floating body can be controlled within a limited distance range under the premise of mooring the offshore floating body, thereby improving reliability and stability. Compared with the single-point mooring devices of the catenary anchor leg type, the tower type and the single anchor leg type in the traditional technology, the single-point mooring device in the utility model has a simple structure, is easy to assemble, can improve the working efficiency, and save costs.

[0025] The utility model also provides a floating production storage and unloading equipment, which has a simple structure, low cost, is easy to install and improves operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0027] Figure 1 A schematic diagram of the structure of a single point mooring device provided in an embodiment of the utility model Figure 1 ;

[0028] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0029] Figure 3 A schematic diagram of the structure of a single point mooring device provided in an embodiment of the utility model Figure 2 ;

[0030] Figure 4 A top view of a single point mooring device provided by an embodiment of the utility model;

[0031] Figure 5 This is a front view of the single point mooring device provided by an embodiment of the utility model.

[0032] Reference numerals

[0033] 10. offshore buoy; 11. mounting hole; 100. pile column; 200. snap ring; 210. first through hole; 220. second through hole; 300. mooring chain; 400. connecting rod. DETAILED DESCRIPTION

[0034] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the present invention are further explained below with reference to the accompanying drawings and through specific implementation methods.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] In the description of this embodiment, unless otherwise specified, the term "plurality" refers to a quantity of two or more than two.

[0039] This embodiment provides a single-point mooring device, which has a simple structure, low cost, is easy to install, and improves operating efficiency.

[0040] like Figure 1-Figure 5 As shown, the single point mooring device is used to moor an offshore floating body 10, and the single point mooring device mainly includes a pile column 100, a clamp ring 200 and a mooring chain 300. Among them, one end of the pile column 100 is fixed to the seabed, and the other end extends out of the sea level. The clamp ring 200 is provided with a first through hole 210, and the clamp ring 200 is sleeved on the pile column 100 through the first through hole 210. One end of the mooring chain 300 is connected to the offshore floating body 10, and the other end is connected to the clamp ring 200, and the length of the mooring chain 300 is greater than the distance between the outer wall of the clamp ring 200 and the offshore floating body 10.

[0041] Based on the above design, in this embodiment, the offshore floating body 10 can be moored by setting the pile column 100, the clamp ring 200 and the mooring chain 300, so as to prevent the offshore floating body 10 from moving in a large range with the seawater. The length of the mooring chain 300 in this embodiment is greater than the distance between the outer wall of the clamp ring 200 and the offshore floating body 10, so that the offshore floating body 10 can be displaced in a small range relative to the clamp ring 200 without leaving the operating area of ​​the FPSO. The setting of the mooring chain 300 can realize the flexible connection between the single-point mooring device and the offshore floating body 10, so that the offshore floating body 10 can roll and pitch within a certain range with the seawater, thereby avoiding or reducing the occurrence of stress concentration. In other words, the setting of the mooring chain 300 can control the roll and pitch of the offshore floating body 10 within a limited distance, thereby improving reliability and safety.

[0042] By configuring the clamp ring 200 and the pile column 100 , the offshore buoy 10 can achieve pitching with the fluctuation of the sea water. At this time, the clamp ring 200 can move up and down relative to the pile column 100 . Under the action of the mooring chain 300 , the clamp ring 200 will not separate from the pile column 100 , thereby improving reliability.

[0043] Optionally, the offshore floating body 10 in this embodiment may be a ship-shaped floating body or a cylindrical floating body.

[0044] Optionally, the pile column 100 in this embodiment is driven vertically into the seabed using a conventional offshore pile driver or offshore pile-driving ship in the industry to ensure that it does not deviate from a predetermined position, thereby improving safety.

[0045] Compared with the prior art, the single-point mooring device in this embodiment has a simple structure. Through the arrangement of the pile column 100, the clamp ring 200 and the mooring chain 300, the offshore floating body 10 can be flexibly connected to the single-point mooring device, and then the roll and pitch of the offshore floating body 10 can be controlled within a limited distance range under the premise of mooring the offshore floating body 10, thereby improving reliability and stability. Compared with the single-point mooring devices of catenary anchor leg type, tower type and single anchor leg type in the traditional technology, the single-point mooring device in this embodiment has a simple structure, is easy to assemble, can improve operating efficiency and save costs.

[0046] In addition, the provision of the mooring chain 300 in this embodiment can also transmit the restraining force of the pile 100 on the clamping ring 200 to the offshore buoy 10 through the mooring chain 300, thereby avoiding or reducing the stress concentration phenomenon of the clamping ring 200 and improving its reliability and stability.

[0047] It can be understood that the offshore buoy 10 in this embodiment is limited in horizontal displacement by the mooring chain 300, the clasp 200 and the pile 100. The offshore buoy 10 can roll and pitch within a certain range, and rotate around the pile 100, thereby achieving the function of mooring the offshore buoy 10 by the single-point mooring device.

[0048] In this embodiment, a cushion block (not shown in the figure) is further arranged between the clamp ring 200 and the pile column 100, one end of the cushion block abuts against the inner wall of the first through hole 210, and the other end of the cushion block abuts against the pile column 100. The arrangement of the cushion block allows the clamp ring 200 to move up and down only along the height direction of the pile column 100, thereby preventing the clamp ring 200 from impacting the pile column 100 when the floating body 10 rolls at sea, thereby extending the service life and improving safety.

[0049] like Figure 1 , Figure 2 and Figure 4 As shown, the single point mooring device in this embodiment further includes a connecting rod 400, which is arranged on the offshore buoy 10, one end of the mooring chain 300 is connected to the connecting rod 400, and the other end is connected to the clamping ring 200. The arrangement of the connecting rod 400 can improve the reliability and stability of the connection between the mooring chain 300 and the offshore buoy 10. Optionally, one end of the mooring chain 300 is welded or sleeved to the connecting rod 400, and the other end is welded or sleeved to the clamping ring 200.

[0050] like Figure 1-Figure 2As shown, the clamp ring 200 in this embodiment is also provided with a second through hole 220, one end of the mooring chain 300 is connected to the offshore buoy 10, and the other end of the mooring chain 300 passes through the second through hole 220 and is connected to the offshore buoy 10, and one-half of the length of the mooring chain 300 is greater than the distance between the outer wall of the clamp ring 200 and the offshore buoy 10, so as to facilitate the flexible connection between the single-point mooring device and the offshore buoy 10, and facilitate the offshore buoy 10 to roll and pitch within a controllable range. The provision of the second through hole 220 is conducive to the connection between the mooring chain 300 and the clamp ring 200, improves the convenience of connection, and improves the efficiency of assembly work.

[0051] Optionally, the length of the tethering chain 300 in this embodiment may be set within a range of 1 meter to 5 meters.

[0052] Optionally, the mooring chain 300 and the second through hole 220 in this embodiment are both provided in plurality, and the mooring chain 300 and the second through hole 220 are provided in one-to-one correspondence. The plurality of second through holes 220 are evenly arranged about the axis of the first through hole 210, which can improve the force uniformity of the clamp ring 200, avoid or reduce the stress concentration of the clamp ring 200, and improve the stability and reliability of the single point mooring device mooring the offshore floating body 10.

[0053] As an optional embodiment, one end of the connecting rod 400 protrudes from the upper end surface of the offshore buoy 10, and the other end protrudes from the lower end surface of the offshore buoy 10. One end of the mooring chain 300 is connected to one end of the connecting rod 400, and the other end of the mooring chain 300 is connected to the other end of the connecting rod 400, thereby improving the reliability and stability of the connection between the mooring chain 300 and the offshore buoy 10.

[0054] In this embodiment, a plurality of connecting rods 400 are provided, and the connecting rods 400 are provided one by one with the mooring chains 300. The plurality of connecting rods 400 are evenly arranged, thereby improving the stress condition of the offshore floating body 10 and avoiding or reducing the stress concentration phenomenon of the offshore floating body 10.

[0055] Optionally, the pile column 100, the clamp ring 200, the fastening chain 300 and the connecting rod 400 in this embodiment are all made of stainless steel to improve their corrosion resistance and extend their service life.

[0056] Optionally, the pad in this embodiment is made of conventional polymer wear-resistant material to extend its service life.

[0057] This embodiment also provides a floating production storage and offloading equipment, which includes an offshore buoy 10 and the above-mentioned single-point mooring device, which is connected to the offshore buoy 10 so that the single-point mooring device moors the offshore buoy 10.

[0058] Specifically, the offshore buoy 10 in this embodiment is provided with a mounting hole 11, one end of the pile column 100 is fixed to the seabed through the mounting hole 11, and the clamping ring 200 is located in the mounting hole 11. The mounting hole 11 is located in the middle and front position of the offshore buoy 10. For example, the mounting hole 11 can be opened at one-third of the offshore buoy 10, which is a position where the roll and pitch of the offshore buoy 10 are relatively weak, thereby improving the stability and reliability of the offshore buoy 10. The floating production storage and offloading equipment can be used in the sea area with a water depth of 50 meters for crude oil extraction operations.

[0059] Since the floating production storage and offloading equipment has the above-mentioned single-point mooring device, the floating production storage and offloading equipment has a simple structure, low cost, is easy to install, and improves operating efficiency.

[0060] Obviously, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

[0061] Note that in the description of this specification, the reference terms "some embodiments", "other embodiments", etc., mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A single point mooring device for mooring an offshore floating body (10), characterized in that: The single point mooring device comprises: A pile (100), one end of which is fixed to the seabed and the other end of which protrudes above the sea level; A snap ring (200), wherein the snap ring (200) is provided with a first through hole (210), and the snap ring (200) is sleeved on the pile (100) through the first through hole (210); A mooring chain (300), one end of which is connected to the offshore buoy (10), and the other end of which is connected to the snap ring (200), and the length of the mooring chain (300) is greater than the distance between the outer wall of the snap ring (200) and the offshore buoy (10).

2. The single point mooring device according to claim 1, characterized in that: The clamping ring (200) is also provided with a second through hole (220), one end of the mooring chain (300) is connected to the offshore buoy (10), and the other end of the mooring chain (300) passes through the second through hole (220) and is connected to the offshore buoy (10), and half the length of the mooring chain (300) is greater than the distance between the outer wall of the clamping ring (200) and the offshore buoy (10).

3. The single point mooring device according to claim 2, characterized in that: The fastening chain (300) and the second through hole (220) are both provided in plurality, and the fastening chain (300) and the second through hole (220) are provided in a one-to-one correspondence.

4. The single point mooring device according to claim 3, characterized in that: A plurality of the second through holes (220) are evenly arranged about the axis of the first through hole (210).

5. The single point mooring device according to claim 1, characterized in that: A cushion block is also provided between the clamping ring (200) and the pile column (100), one end of the cushion block abuts against the inner wall of the first through hole (210), and the other end of the cushion block abuts against the pile column (100).

6. The single point mooring device according to claim 1, characterized in that: The single-point mooring device further comprises a connecting rod (400), wherein the connecting rod (400) is arranged on the offshore floating body (10), one end of the mooring chain (300) is connected to the connecting rod (400), and the other end is connected to the clamping ring (200).

7. The single point mooring device according to claim 2, characterized in that: The single-point mooring device also includes a connecting rod (400), which is arranged on the offshore floating body (10), one end of the connecting rod (400) protrudes from the upper end surface of the offshore floating body (10), and the other end protrudes from the lower end surface of the offshore floating body (10), one end of the mooring chain (300) is connected to one end of the connecting rod (400), and the other end of the mooring chain (300) is connected to the other end of the connecting rod (400).

8. The single point mooring device according to any one of claims 6 or 7, characterized in that: The connecting rods (400) are arranged in plurality, and the connecting rods (400) and the fastening chains (300) are arranged in a one-to-one correspondence.

9. Floating production storage and offloading equipment, characterized in that: The floating production storage and offloading equipment comprises an offshore buoy (10) and a single-point mooring device as described in any one of claims 1 to 8, wherein the single-point mooring device is connected to the offshore buoy (10) so that the single-point mooring device moors the offshore buoy (10).

10. The floating production storage and offloading facility according to claim 9, characterized in that: The offshore floating body (10) is provided with a mounting hole (11), one end of the pile column (100) passes through the mounting hole (11) and is fixed to the seabed, and the clamping ring (200) is located in the mounting hole (11).

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