Cable protection pipe connected with vertical pipe

Abstract

The invention discloses a cable protection pipe connected with a vertical pipe, the cable protection pipe connected with the vertical pipe comprises a vertical pipe body and a bent pipe body, the bent pipe body is inserted into the vertical pipe body through a sleeving guide cylinder, the bent pipe body is sleeved with a holding clamp, and the holding clamp is fixed on a guide pipe frame rod piece so as to fix the bent pipe body; a reducing cone section is arranged at one end of the bent pipe body and sleeves the sleeving guide cylinder, so that the bent pipe body is connected to the vertical pipe body; a steel wire rope connected with a cable is arranged in the elbow body, and the cable is pulled and installed by pulling the steel wire rope. According to the cable protection pipe connected with the vertical pipe, the bent pipe body is connected to the vertical pipe body, the bent pipe body is fixed through the embracing clamp, then the cable is protected, the cable is pulled by the steel wire rope to enter the vertical pipe body along the bent pipe body, and the cable is protected. The built platform stand pipe is transformed into the cable protection pipe, the built structure is fully utilized, the offshore construction difficulty is reduced, and the construction period is shortened.

Description

Technical Field

[0001] The invention belongs to the field of offshore oil engineering, and in particular relates to a cable protective pipe connected to a riser. Background Art

[0002] During the development of offshore oil and gas fields, new platforms are connected to old platforms by laying submarine pipelines and submarine cables. Therefore, the platform design should consider reserving risers or cable protection pipes for subsequent platform access. According to different development plans, there are many situations for reserving risers or protection pipes.

[0003] The subsequent access platform information is clear, the position, size and orientation of the reserved riser or protective pipe are determined, and they are pre-installed on the proposed platform conductor rack and installed together with the conductor rack. If the subsequent platform access parameters change, the reserved riser or protective pipe may not be available. The construction precision control of the base is high, and diving operations are required to install risers, protective pipes and clips. The diving operation has a large workload, and it is necessary to clear marine organisms at the clamp installation position, and avoid ancillary structures such as anodes. If it cannot be avoided, the interfering structure needs to be removed, which increases the construction time.

[0004] Therefore, it is urgent to design a cable protection tube connected to the riser to solve the above-mentioned problem of connecting the cable protection tube to the riser. Summary of the invention

[0005] In order to solve the technical problem mentioned in the background technology that when installed together with the conductor pipe, if the subsequent platform access parameters change, the reserved riser or protective pipe may not be used, the construction precision control of the base is required to be high, and diving operations are required to install the riser, a cable protective pipe connected to the riser is provided to solve the problem of connecting the cable protective pipe to the riser.

[0006] To achieve the above purpose, the specific technical solution of the cable protection tube connected to the riser of the present invention is as follows: A cable protective tube connected to a riser comprises a riser body and a bend body, the bend body being inserted into the riser body through a sleeve guide cylinder, the bend body being sleeved with a clamp, the clamp being fixed on a pipe frame rod to fix the bend body; a reducing cone section is provided at one end of the bend body, the reducing cone section is sleeved on the sleeve guide cylinder to connect the bend body to the riser body; a steel wire rope connected to the cable is provided in the bend body, the steel wire rope is pulled to pull and install the cable.

[0007] Further, a sleeve guide cylinder is connected along the cutting line of the riser body, one end of the bent pipe body is aligned with the riser body, and the bent pipe body is sleeved on one end of the sleeve guide cylinder away from the riser body.

[0008] Furthermore, one end of the clamp is sleeved on the elbow body, and one end of the clamp away from the elbow body is sleeved on the catheter frame rod to fix the elbow body.

[0009] Furthermore, the clamp includes a first clamp and a second clamp, one end of the first clamp is sleeved on an end of the bent pipe body close to the riser body, and one end of the second clamp is sleeved on an end of the bent pipe body away from the first clamp, and both the first clamp and the second clamp are sleeved on the conductor frame rod.

[0010] Furthermore, a reducing cone section is connected to one end of the bent pipe body connected to the sleeve guide cylinder, and the bent pipe body is sleeved on the sleeve guide cylinder through the reducing cone section.

[0011] Furthermore, the sleeve guide cylinder is provided with a buckle to fix the reducing cone section sleeved on the sleeve guide cylinder.

[0012] Furthermore, a guide opening is provided at one end of the bent pipe body away from the riser body, and the cable enters the interior of the bent pipe body through the guide opening.

[0013] Furthermore, a steel wire rope is provided inside the bend pipe body, and the steel wire rope is fixedly connected to one end of the cable entering the bend pipe body, and the steel wire rope is pulled to allow the cable to enter the bend pipe body.

[0014] Furthermore, the steel wire rope enters the bend pipe body from the riser body, and the steel wire rope is pulled so that the cable enters the riser body along the bend pipe body.

[0015] Furthermore, the inner diameter of the reducing cone section and the riser body at the joint is consistent to prevent one end of the cable from getting stuck when it is pulled out.

[0016] The cable protection tube for connecting the riser of the present invention has the following advantages: By connecting the bent pipe body to the riser body and fixing the bent pipe body through the clamp, the cable is protected, and the cable is pulled along the bent pipe body into the riser body using a wire rope to protect the cable. This application transforms the built platform riser into a cable protection pipe, making full use of the built structure, reducing the difficulty of offshore construction, shortening the construction period, and saving engineering materials. The transformed cable protection pipe has sufficient strength to meet the force requirements during cable installation and subsequent operation, does not add wind, wave and current environmental forces to the built platform, and has little impact on the overall strength and bearing capacity of the platform structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the cable protection pipe connected to the riser of the present invention; Figure 2 The present invention is a connection diagram of a sleeve guide cylinder and a bent pipe body of a cable protection pipe connected to a riser.

[0018] Description of the markings in the figure: 1. Riser body; 2. Bend body; 3. Sleeve guide cylinder; 4. First clamp; 5. Second clamp; 6. Conductor frame rod; 7. Reducer section; 9. Wire rope; 10. Cable; 11. Guide head. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0020] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0021] Please refer to the attached Figure 1 To Attachment Figure 2 A cable guard for connecting a riser according to the present invention is described.

[0022] like Figure 1 As shown, the cable protection tube for connecting the riser in the present invention comprises a riser body 1 and a bend body 2. The bend body 2 is plugged into the riser body 1 through a sleeve guide cylinder 3. A clamp is sleeved on the bend body 2, and the clamp is fixed on the pipe frame rod 6 to fix the bend body 2. A reducing cone section 7 is provided at one end of the bend body 2, and the reducing cone section 7 is sleeved on the sleeve guide cylinder 3 to connect the bend body 2 to the riser body 1. A steel wire rope 9 connected to the cable 10 is provided in the bend body 2, and the steel wire rope 9 is pulled to pull and install the cable 10. By connecting the bend body 2 to the riser body 1 and fixing the bend body 2 through the clamp, the cable 10 is protected, and the steel wire rope 9 is used to pull the cable 10 along the bend body 2 into the riser body 1 to protect the cable 10.

[0023] This application transforms the existing platform riser into a cable protective pipe, fully utilizing the existing structure, reducing the difficulty of offshore construction, shortening the construction period, and saving engineering materials. The transformed cable protective pipe has sufficient strength to meet the force requirements during cable installation and subsequent operation, does not add new wind, wave and current environmental forces to the existing platform, and has little impact on the overall strength and bearing capacity of the platform structure.

[0024] Further, if Figure 1 and Figure 2As shown, a sleeve guide cylinder 3 is connected along the cutting line of the riser body 1, one end of the elbow body 2 is aligned with the riser body 1, and the sleeve guide cylinder 3 is sleeved with the elbow body 2 at one end away from the riser body 1; one end of the clamp is sleeved on the elbow body 2, and the end of the clamp away from the elbow body 2 is sleeved on the conductor frame rod 6 to fix the elbow body 2; the clamp includes a first clamp 4 and a second clamp 5, one end of the first clamp 4 is sleeved on the end of the elbow body 2 close to the riser body 1, and one end of the second clamp 5 is sleeved on the end of the elbow body 2 away from the first clamp 4, and the first clamp 4 and the second clamp 5 are both sleeved on the conductor frame rod 6.

[0025] In this embodiment, preferably, one end of the original riser body 1 is cut off along the cutting line, and the sleeve guide cylinder 3 is connected at the cutting line to ensure that one end of the elbow body 2 is aligned with the riser body 1, and the elbow body 2 is sleeved on the end of the sleeve guide cylinder 3 away from the riser body 1, thereby realizing the connection between the elbow body 2 and the riser body 1.

[0026] Preferably, both ends of the clamp are respectively connected with sleeves of the same size as the bend body 2 and the catheter frame rod 6, the sleeve at one end of the clamp is sleeved on the bend body 2, and the sleeve at the end away from the bend body 2 is sleeved on the catheter frame rod 6, thereby fixing the bend body 2.

[0027] The sleeve at one end of the first clamp 4 is sleeved on the end of the elbow body 2 close to the riser body 1, and the second clamp 5 is sleeved on the end of the elbow body 2 away from the first clamp 4. The sleeves of the first clamp 4 and the second clamp 5 away from the elbow body 2 are both arranged on the catheter frame rod 6 to fix the elbow body 2, and the existing pipe or protective pipe can be directly used when the subsequent platform is connected without modification, and it can adapt to changes in the size and direction of the riser or protective pipe. The clamp is connected to the base to avoid interference with the anode or other structures.

[0028] Further, if Figure 1 As shown, a reducing cone section 7 is connected to one end of the elbow body 2 and the sleeve guide cylinder 3, and the elbow body 2 is sleeved on the sleeve guide cylinder 3 through the reducing cone section 7; the sleeve guide cylinder 3 is provided with a buckle to fix the reducing cone section 7 sleeved on the sleeve guide cylinder 3; a guide port 11 is provided at one end of the elbow body 2 away from the riser body 1, and the cable 10 enters the interior of the elbow body 2 through the guide port 11.

[0029] In this embodiment, a reducing cone section 7 is connected to one end of the elbow body 2. Preferably, the reducing cone section 7 is trapezoidal, and the elbow body 2 is connected to the sleeve guide cylinder 3 through the reducing cone section 7, thereby connecting the elbow body 2 with a larger diameter to the riser body 1.

[0030] Preferably, a buckle is provided on the sleeve guide cylinder 3, which fixes the reducing cone section 7 sleeved on the sleeve guide cylinder 3, thereby fixing the reducing cone section 7; a guide port 11 is connected to the port of the bent pipe body 2 away from the end of the riser body 1, and the cable 10 enters the interior of the bent pipe body 2 from one end of the guide port 11, thereby protecting the cable 10, and the appropriate position and orientation can be flexibly selected.

[0031] Further, if Figure 1 As shown, a steel wire rope 9 is provided inside the bend pipe body 2, and the steel wire rope 9 is fixedly connected to one end of the cable 10 entering the bend pipe body 2, and the steel wire rope 9 is pulled to allow the cable 10 to enter the bend pipe body 2; the steel wire rope 9 enters the bend pipe body 2 from the riser body 1, and the steel wire rope 9 is pulled to allow the cable 10 to enter the riser body 1 along the bend pipe body 2; the inner diameter of the reducing cone section 7 is consistent with that of the riser body 1 at the joint to prevent one end of the cable 10 from getting stuck when it is pulled out.

[0032] In the present embodiment, preferably, a steel wire rope 9 for pulling the cable 10 is provided inside the bend pipe body 2, and the steel wire rope 9 is fixedly connected to one end of the cable 10 entering the bend pipe body 2, and the cable 10 enters the bend pipe body 2 by pulling the steel wire rope 9; the steel wire rope 9 extends from the riser body 1 to the bend pipe body 2, and the steel wire rope 9 is pulled, so that the cable 10 enters the riser body 1 along the bend pipe body 2, so that the cable 10 is protected by the riser body 1 and the bend pipe body 2; the inner diameter of the reducing cone section 7 is consistent with the inner diameter of the joint between the riser body 1 and the riser body 1, so as to prevent the cable 10 from being stuck in the column when the pulling head is pulled out.

[0033] The construction steps of the cable protection pipe connected to the riser in this application are as follows: The riser body 1 is connected to the sleeve guide cylinder 3 at the cutting line, one end of the bend pipe body 2 connected to the reducing cone section 7 is sleeved on the sleeve guide cylinder 3, the bend pipe body 2 is fixed to the conductor frame rod 6 through the first clamp 4 and the second clamp 5, the wire rope 9 is lowered from the top of the riser body 1, the wire rope 9 is fixed to the cable 10, the wire rope 9 is pulled, and the cable 10 enters the bend pipe body 2 and the riser body 1 along the pulling direction of the wire rope 9.

[0034] The cable protection tube based on the connection riser is connected to the curved tube body 2 on the riser body 1, and the curved tube body 2 is fixed by the first clamp 4 and the second clamp 5, so as to protect the cable 10, and the cable is pulled along the curved tube body 2 into the riser body 1 by the steel wire rope 9 to protect the cable 10. The present application transforms the built platform riser into a cable protection tube, fully utilizes the built structure, reduces the difficulty of offshore construction, shortens the construction period, and saves engineering materials. The transformed cable protection tube has sufficient strength to meet the force requirements during cable installation and subsequent operation, does not add wind, wave and current environmental forces to the built platform, and has little effect on the overall strength and bearing capacity of the platform structure.

[0035] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A cable protection tube connected to a riser, characterized in that: It includes a riser body and a bend body. The bend body is inserted into the riser body through a sleeve guide cylinder. A clamp is sleeved on the bend body, and the clamp is fixed on the conductor frame rod to fix the bend body. A reducing cone section is provided at one end of the bend body, and the reducing cone section is sleeved on the sleeve guide cylinder to connect the bend body to the riser body. A steel wire rope connected to the cable is provided in the bend body, and the steel wire rope is pulled to pull and install the cable.

2. The cable protection tube for connecting a riser according to claim 1, characterized in that: A sleeve guide cylinder is connected along the cutting line of the riser body, one end of the bent pipe body is aligned with the riser body, and the bent pipe body is sleeved on one end of the sleeve guide cylinder away from the riser body.

3. The cable protection tube for connecting a riser according to claim 1, characterized in that: One end of the clamp is sleeved on the elbow body, and one end of the clamp away from the elbow body is sleeved on the catheter frame rod to fix the elbow body.

4. The cable protection tube for connecting a riser according to claim 3, characterized in that: The clamp includes a first clamp and a second clamp. One end of the first clamp is sleeved on an end of the elbow body close to the riser body, and one end of the second clamp is sleeved on an end of the elbow body away from the first clamp. Both the first clamp and the second clamp are sleeved on the conductor frame rod.

5. The cable protection tube for connecting a riser according to claim 4, characterized in that: A reducing cone section is connected to one end of the bent pipe body connected to the sleeve guide cylinder, and the bent pipe body is sleeved on the sleeve guide cylinder through the reducing cone section.

6. The cable protection tube for connecting a riser according to claim 5, characterized in that: The sleeve guide cylinder is provided with a buckle to fix the diameter-reducing cone section sleeved on the sleeve guide cylinder.

7. The cable protection tube for connecting a riser according to claim 5, characterized in that: A guide opening is arranged at one end of the bent pipe body away from the riser body, and the cable enters the interior of the bent pipe body through the guide opening.

8. The cable protection tube for connecting a riser according to claim 7, characterized in that: A steel wire rope is arranged inside the bending pipe body, and the steel wire rope is fixedly connected to one end of the cable entering the bending pipe body, and the steel wire rope is pulled to allow the cable to enter the bending pipe body.

9. The cable protection tube for connecting a riser according to claim 8, characterized in that: The steel wire rope enters the bend pipe body from the riser body, and the steel wire rope is pulled so that the cable enters the riser body along the bend pipe body.

10. The cable protection tube for connecting a riser according to claim 5, characterized in that: The inner diameter of the reducing cone section is consistent with the inner diameter of the riser body to prevent one end of the cable from getting stuck when it is pulled out.

Images