Self-installation oil storage platform with output berthing device

Abstract

The self-installation oil storage platform comprises a platform body, pile legs, a mat and the berthing device, the platform body is located above the mat and connected with the mat through the pile legs, the pile legs are used for being inserted into penetration piles, and the berthing device comprises berthing supporting legs and berthing supporting rods. The berthing supporting leg is located on one side of the platform body and fixed to the mat, the berthing supporting rod is fixed to the side wall, back to the platform body, of the berthing supporting leg, and a buffering piece is fixed to the end, away from the berthing supporting leg, of the berthing supporting rod. The influence of export berthing on the platform main body is reduced on the premise of meeting the requirements of export berthing of crude oil; after the whole oil storage platform is used, the penetration piles inserted into the pile legs and the berthing supporting legs can be cut along the underwater mud surface, so that the whole oil storage platform can be reused in a sea area with the same environmental condition, reuse is achieved, and the development engineering cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of offshore oilfield development, and in particular to a self-installed oil storage platform with an external transport berthing device. Background Art

[0002] In the development of offshore oil fields in my country, the traditional oil storage platform's external transmission requires two-point mooring or dynamic positioning external transmission tankers. Two-point mooring external transmission requires the construction of a new berthing jacket platform, which will greatly increase the project investment. Dynamic positioning external transmission is rarely used because there are fewer external transmission tankers and the cost is high. Therefore, the current external transmission of oil storage platforms has the problem of high investment cost and cannot be reused.

[0003] Therefore, a new self-installed oil storage platform with an external transmission berthing device is urgently needed to solve the above technical problems. Summary of the invention

[0004] The present invention aims to solve the above technical problems, that is, to solve the problem that the existing oil storage platform needs two-point mooring or dynamic positioning oil tankers for export. The two-point mooring oil tanker needs to build a new berthing jacket platform, which will greatly increase the project investment. The dynamic positioning oil tanker is used less frequently due to the small number of oil tankers and the high cost, and it cannot be reused.

[0005] To this end, the present invention provides a self-installed oil storage platform with an external transport berthing device, comprising a platform body, a sinking pad and a berthing device, wherein the platform body is located above the sinking pad and is connected through pile legs, the platform body can move up and down relative to the pile legs, the berthing device is located on one side of the platform body and is connected to the sinking pad, and the pile legs are used to insert penetration piles.

[0006] In a specific embodiment of the above-mentioned self-installed oil storage platform with an external transport berthing device, the berthing device includes a berthing support leg and a berthing strut, the berthing support leg is located on one side of the platform body and is fixed on the sinker pad, the berthing strut is fixed on the side wall of the berthing support leg facing away from the platform body, and a buffer is fixed to the end of the berthing strut away from the berthing support leg.

[0007] In a specific embodiment of the self-installed oil storage platform with an external transport berthing device, the number of the berthing support legs is at least two and they are arranged along the width direction of the oil storage platform, and each of the berthing support legs is fixed with at least one berthing support rod arranged vertically.

[0008] In a specific embodiment of the above-mentioned self-installed oil storage platform with an external transport berthing device, the interiors of the berthing support legs and the pile legs are both hollow structures, and the inner walls of the berthing support legs and the pile legs are respectively fixed with multiple circumferentially arranged support members near the top ends for fixed connection with the inserted penetration piles.

[0009] In a specific embodiment of the self-installed oil storage platform with an external transport berthing device, the support member is in a T-shaped structure, and the T-shaped head of the support member is used for welding and fixing with the penetration pile.

[0010] In a specific embodiment of the above-mentioned self-installed oil storage platform with an external transport berthing device, the sinker includes a first steel plate and a second steel plate, and the first steel plate and the second steel plate are fixedly connected in a horizontal and vertical stacking arrangement to form a rectangular shape.

[0011] In a specific embodiment of the self-installed oil storage platform with an external transport berthing device, a storage tank is arranged on the top of the platform body, the platform body is a rectangular structure, and the four corner ends of the platform body respectively penetrate one of the pile legs, and a mounting platform is fixed on the top of the pile leg for installing a lifting device.

[0012] In a specific embodiment of the self-installed oil storage platform with an external transport berthing device, a notch through which the berthing support leg can pass is provided on the side wall of the platform body close to the berthing support leg.

[0013] In a specific embodiment of the self-installed oil storage platform with an external transport berthing device, the platform body is made of high-strength steel with a yield strength greater than or equal to 420 MPa.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The mooring device is set on one side of the platform body. The mooring device is connected to the sinking pad but not in contact with the platform body. Under the premise of meeting the requirements of crude oil export berthing, the impact of export berthing on the platform body can be reduced; after the entire oil storage platform is used, the penetration piles inserted into the pile legs and the mooring support legs can be cut along the underwater mud surface, so that the entire oil storage platform can be reused in the sea area with the same environmental conditions, realizing reuse and reducing the development project cost;

[0016] 2. A storage tank is set on the platform body to realize the oil storage function. The high-strength steel design of the platform body can effectively reduce the structural weight of the platform body. A sinking pad is set under the platform body to improve the overall bearing capacity of the platform body, which can improve the anti-overturning and anti-sinking of the platform body and increase the stability of the platform;

[0017] 3. During towing migration, part of the penetration piles migrate with the pile legs and can be driven into the mud as part of the penetration piles during the next installation. Since the part of the penetration piles has been installed in the pile legs during installation and use, the length of the total penetration piles installed through the pile legs is reduced, so that small floating crane installation can be achieved without the need to use large floating crane resources, thus shortening the platform's offshore construction costs and construction time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0019] Figure 1 It is a structural schematic diagram of the self-installed oil storage platform with an external transmission berthing device provided by the present invention when it is installed in place;

[0020] Figure 2 This is a schematic diagram of piling during installation of a self-installed oil storage platform with an external transport berthing device provided by the present invention;

[0021] Figure 3 It is a top view of the position distribution of the platform body and the mooring device;

[0022] Figure 4 It is a schematic diagram of the structure of the sink pad;

[0023] Figure 5 It is a schematic diagram of the structure in which the pile legs and the driven piles are connected through the supporting members;

[0024] Figure 6 This is a schematic diagram of the structure of the oil storage platform undergoing its first towing as a whole.

[0025] List of reference numerals:

[0026] 1. Platform body; 2. Storage tank; 3. Mooring support rod; 4. Buffer; 5. Sinking pad; 51. First steel plate; 52. Second steel plate; 6. Pile legs; 7. Mooring support legs; 8. Penetration piles; 9. Support structure; 10. Mounting platform; 11. Notch. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc., are used to define components, only for the convenience of distinguishing the above components, and unless otherwise stated, the above terms have no special meanings and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The present invention relates to the technical field of offshore oilfield development, and in particular to a self-installed oil storage platform with an external transport berthing device. The purpose is to solve the problem that the external transport of existing oil storage platforms requires two-point mooring or dynamic positioning of external transport oil tankers. The two-point mooring external transport requires a new berthing jacket platform, which will greatly increase the project investment. The dynamic positioning external transport has fewer external transport oil tankers, higher costs, and is rarely used, and cannot be reused. To this end, the present invention provides a self-installed oil storage platform with an external transport berthing device, comprising a platform body, a sinking pad and a berthing device, wherein the platform body is located above the sinking pad and is connected through pile legs, the berthing device is located on one side of the platform body and is connected to the sinking pad, the pile legs are used to insert penetration piles, and the berthing device is arranged on one side of the platform body, the berthing device is connected to the sinking pad but not in contact with the platform body, and the impact of the external transport berthing on the platform body can be reduced while meeting the requirements for the external transport of crude oil berthing; after the entire oil storage platform is used, the penetration piles inserted into the pile legs and the berthing support legs can be cut along the underwater mud surface, so that the entire oil storage platform can be reused in the sea area with the same environmental conditions, thereby achieving reuse and reducing the development project cost.

[0031] The self-installed oil storage platform with an external transport berthing device provided in an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] See also Figure 1-3 The present invention provides a self-installed oil storage platform with an external transport berthing device, comprising a platform body 1, a sinking pad 5 and a berthing device, wherein the platform body 1 is located above the sinking pad 5 and connected by pile legs 6, and the platform body 1 can move up and down relative to the pile legs 6, and the berthing device is located on one side of the platform body 1 and connected to the sinking pad 5, and the pile legs 6 are used to insert the penetration piles 8. The berthing device is used for berthing the ship.

[0033] Specifically, a storage tank 2 is provided at the top of the platform body 1 for storing crude oil, which can meet the development needs of large shallow water oil fields; the platform body 1 is a rectangular parallelepiped structure, which can meet the stability requirements during towing. Each of the four corner ends of the platform body 1 passes through a pile leg 6, and a mounting platform 10 is fixed at the top of the pile leg 6 for installing a lifting device. The lifting device can be rented when the oil storage platform is installed as a whole, and the self-lifting installation of the oil storage platform is controlled by the lifting device.

[0034] In addition, the platform body 1 is made of high-strength steel of 420MPa or higher. For example, it is made of 420MPa high-strength steel. Compared with traditional steel with a yield strength of 355Mpa, it can reduce the weight by about 20% while ensuring the structural strength, thereby effectively reducing the structural weight of the platform.

[0035] In one embodiment, see Figure 1 and Figure 3 The mooring device includes a mooring support leg 7 and a mooring support rod 3. The mooring support leg 7 is located on one side of the platform body 1 and fixed on the sinking pad 5. The mooring support rod 3 is fixed on the side wall of the mooring support leg 7 facing away from the platform body 1. A buffer member 4 is fixed to the end of the mooring support rod 3 away from the mooring support leg 7.

[0036] Specifically, a notch 11 is provided on the side wall of the platform body 1 close to the mooring support leg 7 so that the mooring support leg 7 can pass through, and there is a gap between the mooring support leg 7 and the notch 11 to ensure that the mooring device does not affect the platform body 1.

[0037] In the above embodiment, the buffer member 4 plays a buffering and protective role when in contact with the mooring hull, so as to avoid being scratched or damaged due to the collision between the mooring hull and the mooring support rod 3. The buffer member 4 can be made of hard rubber and made into a plate-like structure, such as a rectangular parallelepiped shape. The mooring support rod 3 is used to fix with the hull when the hull is moored to achieve mooring.

[0038] In one embodiment, see Figure 3 The number of the mooring support legs 7 is at least two and they are arranged along the width direction of the oil storage platform, and each mooring support leg 7 is fixed with at least one mooring support rod 3 arranged up and down.

[0039] It should be noted that the present application does not make any specific limitation on the number of the mooring support legs 7 and the number of the mooring support rods 3 on each mooring support leg 7, and they can be flexibly set according to actual usage.

[0040] In one embodiment, see 1 and Figure 5The mooring support leg 7 and the pile leg 6 are both hollow structures. A plurality of circumferentially arranged support members 9 are fixed to the inner walls of the mooring support leg 7 and the pile leg 6 near the top to be fixedly connected with the inserted penetration pile 8. The pile leg 6 and the mooring support leg 7 can both be cylindrical in shape, and the interior is designed to be a hollow structure. The pile leg 6 and the mooring support leg 7 have the same structure of connecting with the penetration pile 8 using the support member 9.

[0041] In one embodiment, the support member 9 is in a T-shaped structure, the T-shaped head of the support member 9 is used for welding and fixing with the driven pile 8, and the T-shaped rod of the support member 9 is in a welded state with the inner wall of the pile leg.

[0042] In the above embodiment, the pile legs 6 and the mooring support legs 7 are both welded and fixed with the support members 9 and the penetration piles 8, which not only increases the stability of the platform body 1, but also uses the T-shaped support members 9 to connect the pile legs and the penetration piles 8. The T-shaped head expands the area of ​​the T-shaped rod, making welding easier. At the same time, the T-shaped rod part is directly cut during disassembly, and the cutting size is relatively small, which makes disassembly faster. In addition, multiple support members 9 are arranged in a circle, so that there is a gap between adjacent support members 9, and the cutting size is also reduced during disassembly, which speeds up the disassembly speed. In addition, the penetration piles 8 and the pile legs are fixed by the support members 9, which meets the requirements of mooring and can withstand more than 1500t of mooring force load.

[0043] In one embodiment, the sinker 5 includes a first steel plate 51 and a second steel plate 52, which are fixedly connected in a horizontal and vertical stacking arrangement to form a rectangular shape, and the mooring support legs 7 and the pile legs 6 are both fixed at the top of the overlapping portion of the first steel plate 51 and the second steel plate 52.

[0044] Specifically, the number of the first steel plates 51 and the number of the second steel plates 52 are set according to the distribution of the pile legs 6 and the mooring support legs 7. Figure 4 As shown, the number of first steel plates 51 is two arranged vertically, the number of second steel plates 52 is three arranged horizontally, and the first steel plates 51 and the second steel plates 52 are distributed up and down. It should be noted that the present application is not limited to the above-described arrangement of the first steel plates 51 and the second steel plates 52. The first steel plates 51 and the second steel plates 52 can also be distributed from bottom to top, that is, the second steel plate 52 is located at the top of the first steel plate 51, which is also within the protection scope of the present application. The sinking pad 5 is arranged under the platform body 1 to improve the overall bearing capacity of the platform body 1, which can play a role in improving the anti-overturning and anti-sinking of the platform body 1 and increasing the stability of the platform.

[0045] In the present application, the berthing device is arranged on one side of the platform body 1, and the berthing device is connected to the sinking pad 5 but not in contact with the platform body 1. Under the premise of meeting the requirements of crude oil export berthing, the impact of export berthing on the platform body 1 can be reduced. After the oil field production is completed, the penetration piles 8 at the mud surface are cut off, lifted by the lifting device, and towed and moved, which can be reused, which is conducive to reducing construction costs.

[0046] Also, see Figure 6 During towing migration, part of the penetration pile 8 moves with the pile leg, and can be driven into the mud as part of the penetration pile 8 during the next installation. Since the part of the penetration pile 8 has been installed in the pile leg during installation and use, the length of the total penetration pile 8 installed through the pile leg is reduced, so that a small floating crane can be used for installation, and there is no need to use large floating crane resources, and the time for loading the penetration pile 8 into the pile leg is reduced, thereby shortening the construction cost and construction time of the platform at sea. When reused, the support member 9 is separated from the penetration pile 8 by external tools, and then the penetration pile 8 is driven into the new installation position again. When the oil storage platform is used for the first time, a section of the penetration pile 8 is inserted into the corresponding pile leg 6 and the berthing support leg 7, and fixed by welding part of the support member 9 to the penetration pile 8, so as to ensure that the penetration pile 8 is fixed in position during the transfer process of the pile leg. When the installation position is reached, the support member 9 is separated from the penetration pile 8, so that the penetration pile 8 can be moved, so that it can be driven into the designated position below the mud surface.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-installed oil storage platform with an external transport berthing device, characterized in that: It includes a platform body, a sinking pad and a mooring device. The platform body is located above the sinking pad and is connected through pile legs. The platform body can move up and down relative to the pile legs. The mooring device is located on one side of the platform body and is connected to the sinking pad. The pile legs are used to insert penetration piles.

2. The self-installed oil storage platform with an external transport berthing device according to claim 1 is characterized in that: The mooring device includes a mooring support leg and a mooring support rod, the mooring support leg is located at one side of the platform body and fixed on the sinking pad, the mooring support rod is fixed on the side wall of the mooring support leg facing away from the platform body, and a buffer is fixed to the end of the mooring support rod away from the mooring support leg.

3. The self-installed oil storage platform with an external transport berthing device according to claim 2 is characterized in that: The number of the mooring support legs is at least two and they are arranged along the width direction of the oil storage platform, and at least one mooring support rod arranged up and down is fixed to each of the mooring support legs.

4. The self-installed oil storage platform with an external transport berthing device according to claim 2 is characterized in that: The interiors of the mooring support leg and the pile leg are both hollow structures, and a plurality of circumferentially arranged support members are fixed to the inner walls of the mooring support leg and the pile leg near the top end for fixed connection with the inserted penetration pile.

5. The self-installed oil storage platform with an external transport berthing device according to claim 4 is characterized in that: The support member is in a T-shaped structure, and the T-shaped head of the support member is used for welding and fixing with the driven pile.

6. The self-installed oil storage platform with an external transport berthing device according to claim 1 is characterized in that: The sink pad includes a first steel plate and a second steel plate, and the first steel plate and the second steel plate are fixedly connected in a horizontal and vertical stacking arrangement to form a rectangular shape.

7. The self-installed oil storage platform with an external transport berthing device according to claim 1 is characterized in that: A storage tank is arranged at the top of the platform body. The platform body is a rectangular parallelepiped structure. Four corner ends of the platform body respectively penetrate one of the pile legs. A mounting platform is fixed at the top of the pile leg for mounting a lifting device.

8. The self-installed oil storage platform with an external transport berthing device according to claim 2 is characterized in that: A notch is provided on the side wall of the platform body close to the mooring support leg, through which the mooring support leg can pass.

9. The self-installed oil storage platform with an external transport berthing device according to any one of claims 1 to 8, characterized in that: The platform body is made of high-strength steel with a yield strength greater than or equal to 420 MPa.

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