Marine riser tension platform and wellhead platform

Abstract

The utility model discloses a riser tension platform and a wellhead platform, and relates to the technical field of ocean engineering, the riser tension platform comprises a tension platform assembly, a connecting piece and a connecting pin, the connecting piece is used for being fixedly connected to the wellhead platform, the tension platform assembly is provided with a first pin hole, the connecting piece is provided with a second pin hole, and the connecting pin is fixedly connected to the wellhead platform. The first pin hole corresponds to the second pin hole in position, and the connecting pin can penetrate through the first pin hole and the second pin hole and is detachably connected with the connecting piece. The marine riser tension platform and the wellhead platform can be disassembled and are convenient to disassemble and assemble.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ocean engineering, in particular to a kind of casing tension platform and wellhead platform. BACKGROUND

[0002] Current casing on wellhead platform is prone to swing when subjected to wind and wave, and this swing can cause greater safety hazards. To compensate for this swing, a casing tension platform (CTP) is generally provided at the top of the casing. The casing tension platform is connected to the wellhead platform and connected to the casing. The casing tension platform can suppress the swing of the casing in the horizontal direction. However, the current casing tension platform is generally directly welded to the wellhead platform, which makes the installation process difficult and inconvenient to disassemble. Therefore, there is an urgent need for a casing tension platform and wellhead platform that is easy to disassemble and more convenient to disassemble and assemble. SUMMARY

[0003] The utility model aims to provide a kind of casing tension platform and wellhead platform to solve the problems existing in the prior art, which is easy to disassemble and more convenient to disassemble and assemble.

[0004] To achieve the above-mentioned purpose, the utility model provides the following scheme:

[0005] The utility model provides a kind of casing tension platform, comprising: tension platform assembly, connecting piece and connecting pin, the connecting piece is used to be fixedly connected on wellhead platform, first pin hole is provided on the tension platform assembly, second pin hole is provided on the connecting piece, the position of the first pin hole and the second pin hole can be corresponded, the connecting pin can pass through the first pin hole and the second pin hole and form detachable connection with the connecting piece.

[0006] In some embodiments, the tension platform assembly includes a tension platform body and a support structure, the tension platform body is fixedly connected to the support structure, and the first pin hole is provided on the support structure.

[0007] In some embodiments, the support structure is a frame structure.

[0008] In some embodiments, the support structure includes two horizontal frames and a plurality of vertical columns, each vertical column is vertically arranged and located between the two horizontal frames, and the two ends of the vertical column are fixedly connected to the two horizontal frames, respectively. The first pin hole is provided on each vertical column.

[0009] In some embodiments, the tension platform assembly further includes a mounting base, the mounting base is fixedly connected to the horizontal frame, and the tension platform body is fixedly connected to the mounting base.

[0010] In some embodiments, the connecting piece is a box structure, the second pin hole is arranged on each of two opposite sides of the box structure, the positions of the two second pin holes correspond to each other, and the connecting pin can pass through the two second pin holes and extend into the first pin hole.

[0011] In some embodiments, the tension platform body has a horizontal spacing from the stand.

[0012] In some embodiments, a connecting bolt and a connecting nut are further included, the connecting pin has a connecting nut, the first screw hole is arranged on the connecting nut, the second screw hole is arranged on the connecting piece, the connecting bolt can pass through the first screw hole and the second screw hole, and the connecting nut can be screwed on the connecting bolt and detachably connect the connecting bolt to the connecting piece.

[0013] In some embodiments, the support structure further includes a plurality of inclined struts, the inclined struts have an included angle with the stand and the horizontal frame, one end of the inclined struts is fixedly connected to the horizontal frame, and the other end of the inclined struts is fixedly connected to the stand.

[0014] The utility model further provides a wellhead platform, including platform body, riser and above-mentioned riser tension platform, the riser is fixedly connected on the platform body, the connecting piece is fixedly connected on the platform body and is close to the top of the riser, the riser tension platform is detachably connected on the platform body.

[0015] The utility model has the following technical effects relative to the prior art:

[0016] The riser tension platform provided by the utility model can be hoisted to the top of the wellhead platform by the hoisting device on the work ship during installation, then slowly lowered, and the positions of the first pin hole and the second pin hole are made to correspond, then the connecting pin is inserted into the first pin hole and the second pin hole, and then the connecting pin is detachably connected to the connecting piece, so that the installation of the tension platform assembly is completed, and the riser tension platform can be replaced and disassembled conveniently. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.

[0018] Figure 1 It is a front view of the riser tension platform in some embodiments of the utility model.

[0019] Figure 2 for Figure 1 Side view of the tension platform of the central water separator;

[0020] Figure 3 for Figure 1 Top view of the tension platform of the central water separator;

[0021] Figure 4 for Figure 1 A magnified view of a section at point A in the middle;

[0022] Figure 5 This is a front view of the wellhead platform in some embodiments of this utility model;

[0023] In the diagram: 1. Tension platform body; 2. Connector; 3. Connecting pin; 4. Support structure; 5. Horizontal frame; 6. Column; 7. Diagonal brace; 8. Connecting bolt; 9. Connecting nut; 10. Connecting cap; 11. Mounting base; 12. Platform body. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] The purpose of this invention is to provide a riser tension platform and a wellhead platform to solve the problems existing in the prior art, making disassembly easier and assembly more convenient.

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Example 1

[0028] This embodiment provides a water-jacking pipe tension platform, such as Figures 1-4 As shown, it includes: a tension platform assembly, a connector 2 and a connecting pin 3. The connector 2 is used to fix it to the wellhead platform. The tension platform assembly is provided with a first pin hole, and the connector 2 is provided with a second pin hole. The positions of the first pin hole and the second pin hole can correspond. The connecting pin 3 can pass through the first pin hole and the second pin hole and form a detachable connection with the connector 2.

[0029] The riser tension platform provided by the embodiment can be hoisted to the wellhead platform by the hoisting device on the work ship, then slowly lowered, and the first pin hole and the second pin hole are corresponded, then the connecting pin 3 is inserted into the first pin hole and the second pin hole, and then the connecting pin 3 is detachably connected to the connecting piece 2, so that the installation of the tension platform assembly is completed. The riser tension platform can be disassembled and replaced, and the disassembly and assembly are simple.

[0030] In an embodiment of the embodiment, the tension platform assembly comprises the tension platform body 1 and the support structure 4, the tension platform body 1 is fixedly connected to the support structure 4, and the first pin hole is arranged on the support structure 4. The support structure 4 can support the tension platform body 1 and enhance the stability.

[0031] In an embodiment of the embodiment, the support structure 4 is a frame structure. The frame structure can reduce the weight of the riser tension platform, thereby facilitating the disassembly and transportation.

[0032] In an embodiment of the embodiment, the support structure 4 comprises two horizontal frames 5 and a plurality of vertical columns 6, each vertical column 6 is vertically arranged and located between the two horizontal frames 5, both ends of the vertical column 6 are fixedly connected to the two horizontal frames 5, and each vertical column 6 is provided with the first pin hole. The first pin hole is arranged on the vertically extending vertical column 6, so that the position of the first pin hole and the second pin hole is corresponded by moving the tension platform assembly in the vertical direction.

[0033] In order to further improve the stability of the installation of the tension platform body 1, in an embodiment of the embodiment, the tension platform assembly further comprises an installation base 11, the installation base 11 is fixedly connected to the horizontal frame 5, and the tension platform body 1 is fixedly connected to the installation base 11.

[0034] In an embodiment of the embodiment, the connecting piece 2 is a box structure, the box structure is provided with the second pin hole on the opposite two sides, the positions of the two second pin holes are corresponded, and the connecting pin 3 can pass through the two second pin holes and extend into the first pin hole. The box structure can protect the connecting pin 3, prevent the damage of the connecting pin 3 caused by environmental factors, and improve the service life.

[0035] In an embodiment of the embodiment, the tension platform body 1 and the vertical column 6 have a horizontal spacing. The spacing between the tension unit and the vertical column 6 can facilitate the installation of the hydraulic station, the accumulator and other related equipment.

[0036] To facilitate the assembly and disassembly of the connecting pin 3, in this first embodiment, a connecting bolt 8 and a connecting nut 9 are also included. The connecting pin 3 has a connecting nut 10 with a first screw hole, and the connecting member 2 has a second screw hole. The connecting bolt 8 can pass through the first screw hole and the second screw hole, and the connecting nut 9 can be screwed onto the connecting bolt 8 to make the connecting bolt 8 detachably connected to the connecting member 2.

[0037] In this first embodiment, the support structure 4 further includes multiple diagonal braces 7. The diagonal braces 7 form an angle with both the column 6 and the horizontal frame 5. One end of the diagonal brace 7 is fixedly connected to the horizontal frame 5, and the other end is fixedly connected to the column 6. The diagonal braces 7 can form a triangular structure with the horizontal frame 5 and the column 6 in the support structure 4, further improving the stability of the support structure 4.

[0038] Example 2

[0039] This embodiment provides a wellhead platform, such as Figure 5 As shown, the system includes a platform body 12, a water-tight pipe, and the aforementioned water-tight pipe tension platform. The water-tight pipe is fixedly connected to the platform body 12, and the connector 2 is fixedly connected to the platform body 12 and close to the top of the water-tight pipe. The water-tight pipe tension platform is detachably connected to the platform body 12.

[0040] The wellhead platform in this embodiment adopts the riser tension platform in Embodiment 1. The riser tension platform is detachable and easy to assemble and disassemble.

[0041] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A riser tension platform characterized by: The application relates to a tension platform assembly, a connecting piece and a connecting pin, wherein the connecting piece is fixedly connected to a wellhead platform, the tension platform assembly is provided with a first pin hole, the connecting piece is provided with a second pin hole, the first pin hole and the second pin hole can be corresponded, and the connecting pin can pass through the first pin hole and the second pin hole and be detachably connected to the connecting piece. The tension platform assembly comprises a tension platform body and a support structure, the tension platform body is fixedly connected to the support structure, and the first pin hole is arranged on the support structure.

2. The riser tension platform of claim 1, wherein: The support structure is a frame structure.

3. The riser tension platform of claim 2, wherein: The support structure comprises two horizontal frames and a plurality of vertical columns, the vertical columns are vertically arranged and located between the two horizontal frames, two ends of the vertical columns are fixedly connected to the two horizontal frames respectively, and the first pin hole is arranged on each vertical column.

4. The riser tension platform of claim 3, wherein: The tension platform assembly further comprises a mounting base, the mounting base is fixedly connected to the horizontal frame, and the tension platform body is fixedly connected to the mounting base.

5. The riser tension platform of claim 4, wherein: The connecting piece is a box structure, the second pin holes are arranged on opposite sides of the box structure, the positions of the two second pin holes are corresponded, and the connecting pin can pass through the two second pin holes and extend into the first pin hole.

6. The riser tension platform of claim 2, wherein: The tension platform body and the vertical column have a horizontal spacing.

7. The riser tension platform of claim 4, wherein: The application further relates to a connecting bolt and a connecting nut, the connecting pin is provided with a connecting nut, the first screw hole is arranged on the connecting nut, the second screw hole is arranged on the connecting piece, the connecting bolt can pass through the first screw hole and the second screw hole, and the connecting nut can be screwed on the connecting bolt and detachably connect the connecting bolt to the connecting piece.

8. The riser tension platform of claim 2, wherein: The support structure further comprises a plurality of inclined struts, the inclined struts form an angle with the vertical columns and the horizontal frames, one end of the inclined struts is fixedly connected to the horizontal frames, and the other end is fixedly connected to the vertical columns.

9. The riser tension platform of claim 4, wherein: The application relates to a platform body, a riser and a riser tension platform as claimed in any one of claims 1-9, the riser is fixedly connected to the platform body, the connecting piece is fixedly connected to the platform body and close to the top of the riser, and the riser tension platform is detachably connected to the platform body.

10. A wellhead platform characterized by: ​

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