Novel ultrahigh-pressure large-drift-diameter module shunting manifold

Abstract

The novel ultrahigh-pressure large-drift-diameter module shunting manifold is obviously characterized in that the main pipeline and the branch pipelines are of an F-shaped shunting structure, the uniform drift diameter is arranged in the main pipeline, fluid can be evenly distributed into all the branch pipelines, and therefore accurate flow control is achieved, the fluid enters from an inlet of the main pipeline, and the flow rate of the fluid is increased. After the flow division effect of the fracturing eight-way assembly, the gas is distributed into each branch pipeline according to a preset proportion and flow, and finally is conveyed to different working areas, so that the stability and the working efficiency of the system are improved; the branch pipelines and the main pipeline are installed through the short section assemblies, the modular design enables installation, maintenance and replacement of the manifold to be more convenient, and the production cost and the downtime are reduced; the molybdenum disulfide layer is laid on the inner side face of the pipeline, the short-circuit assembly is connected with the main pipeline through the flange, the high pressure resistance and the corrosion resistance of the manifold are improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of fluid transportation, and particularly relates to a novel ultra-high pressure large-diameter modular shunt manifold. Background Technique

[0002] With the progress of science and technology and the large-scale exploitation of low-permeability oil and gas resources, using numerous pump trucks and extremely high pressures to conduct large-scale fracturing operations on multiple oil and gas wells has become a common technology for the exploitation of low-permeability oil and gas resources such as shale gas and sandstone gas. Due to large-scale, multi-well fracturing operations, the equipment occupies a large area and has a long transportation distance. Therefore, using a fracturing shunt manifold to connect the fracturing manifold and multiple distributed fracturing wellhead devices to conduct fracturing operations simultaneously or separately is a major measure in the development of fracturing complete equipment technology.

[0003] However, when facing ultra-high pressure working conditions, traditional shunt manifolds often have problems such as small diameters resulting in limited flow rates, uneven internal fluid pressure distribution, complex connections between modules, and low integration. These problems not only affect production efficiency but also increase the equipment maintenance cost and potential safety risks. Content of the Utility Model

[0004] Purpose of the utility model: To overcome the above deficiencies, the purpose of the utility model is to provide a novel ultra-high pressure large-diameter modular shunt manifold, whose remarkable feature is that the main pipeline and the branch pipelines are in an "F"-shaped shunt structure, with a unified diameter set inside the main pipeline, which can evenly distribute the fluid to each branch pipeline, thereby achieving precise flow control. The fluid enters from the inlet of the main pipeline, and after the shunting effect of the fracturing octagon assembly, it is distributed to each branch pipeline according to a predetermined ratio and flow rate, and finally transported to different working areas, improving the stability and working efficiency of the system.

[0005] Technical solution: To achieve the above purpose, the utility model provides a novel ultra-high pressure large-diameter modular shunt manifold, including a main pipeline and branch pipelines. At least one branch pipeline is connected to the main pipeline, and the branch pipeline is connected to the main pipeline through a set of short joint assemblies, and the main pipeline and the branch pipelines are in an "F" shape.

[0006] Further, the short joint assembly includes a short joint pipe and a four-way pipe. The four-way pipe is connected into the main pipeline. The short joint pipe is connected into the main pipeline through the four-way pipe and is collinear with the main pipeline. One end of the short joint pipe is connected to the four-way pipe, and the other end is connected to the next short joint assembly or the outlet of the main pipeline. The connection of the branch pipeline to the main pipeline through the short joint assembly realizes modular installation, and the reduction or increase of the branch pipeline can be achieved only by removing or adding the corresponding short joint assembly.

[0007] Among them, a safety valve assembly and a first fracturing octo-connection assembly are arranged on the branch pipeline. The first fracturing octo-connection assembly is arranged at the outlet of the branch pipeline, and the safety valve assembly is arranged between the first fracturing octo-connection assembly and the main pipeline.

[0008] In a further optimized solution, the safety valve assembly includes a manual gate valve and a hydraulic gate valve arranged in sequence on the branch pipeline. One end of the manual gate valve is communicated with a four-way pipe, and the other end is communicated with the hydraulic gate valve. The other end of the hydraulic gate valve is communicated with the first fracturing octo-connection assembly. Both the manual gate valve and the hydraulic gate valve in the safety valve assembly can control the conduction of the branch pipeline. During normal operation, both are in the normally open state. When an emergency occurs, the hydraulic gate valve is controlled to close the branch pipeline, while the manual gate valve is used to close the branch pipeline manually when the hydraulic gate valve fails, ensuring safe production.

[0009] Further, a second fracturing octo-connection assembly is arranged at the outlet end of the main pipeline. There is a diverter base at the bottom of the second fracturing octo-connection assembly, and the second fracturing octo-connection assembly is arranged on the diverter base.

[0010] There is a branch pipeline bottom skid at the bottom of the branch pipeline, and the branch pipeline is arranged on the branch pipeline bottom skid.

[0011] The outlet of the four-way pipe opposite to the branch pipeline is blocked by a blind flange.

[0012] Preferably, connecting flange plates are arranged at both ends of the short pipe section. Arranging connecting flanges at both ends of the short pipe section is for the convenience of installation on the one hand, and on the other hand, flange connection has high reliability, ensuring the reliability of the entire diverter manifold under high-pressure working conditions.

[0013] Furthermore, a molybdenum disulfide layer is laid on the inner surfaces of the main pipeline and the branch pipeline. The molybdenum disulfide layer can effectively avoid the corrosion of the pipeline by the liquid, improve the corrosion resistance of the diverter manifold and extend its service life.

[0014] From the above technical solutions, the following beneficial effects can be seen in the present utility model:

[0015] 1. A novel ultra-high pressure large-diameter modular diverter manifold provided by the present utility model has a remarkable feature that the main pipeline and the branch pipelines are in an F-shaped diversion structure. A unified diameter is set inside the main pipeline, which can evenly distribute the fluid to each branch pipeline, thereby realizing precise flow control. The fluid enters from the inlet of the main pipeline, and after the diversion effect of the fracturing octo-connection assembly, it is distributed to each branch pipeline according to a predetermined ratio and flow rate, and finally transported to different working areas, improving the stability and working efficiency of the system.

[0016] 2. The branch pipeline is installed with the main pipeline through the short joint assembly. The modular design makes the installation, maintenance and replacement of the manifold more convenient, reducing the production cost and downtime.

[0017] 3. In the utility model, a molybdenum disulfide layer is laid on the inner side surface of the pipeline. The short joint assembly and the main pipeline are connected by flanges, improving the high-pressure resistance and corrosion resistance of the manifold and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a novel ultra-high pressure large-diameter modular shunt manifold according to the utility model;

[0019] Figure 2 It is a side view of the branch pipeline according to the utility model.

[0020] In the figure: 1-main pipeline, 11-second fracturing octagon assembly, 111-shunt head base, 2-branch pipeline, 21-safety valve assembly, 211-manual gate valve, 212-hydraulic gate valve, 22-first fracturing octagon assembly, 23-branch pipeline skid, 3-short joint assembly, 31-short joint pipe, 32-four-way pipe, 321-blind flange. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0022] In one embodiment, as Figure 1 - Figure 2 shown: A novel ultra-high pressure large-diameter modular shunt manifold includes a main pipeline 1 and a branch pipeline 2. At least one branch pipeline 2 is connected to the main pipeline 1. In this embodiment, the number of branch pipelines 2 is 3. The branch pipeline 2 is connected to the main pipeline 1 through a set of short joint assemblies 3. The main pipeline 1 and the branch pipeline 2 are in an "F" shape.

[0023] An optional or preferred solution is that the short joint assembly 3 includes a short joint pipe 31 and a four-way pipe 32. The four-way pipe 32 is connected into the main pipeline 1. The short joint pipe 31 is connected into the main pipeline 1 through the four-way pipe 32 and is collinear with the main pipeline 1. One end of the short joint pipe 31 is connected to the four-way pipe 32, and the other end is connected to the next short joint assembly 3 or the outlet of the main pipeline 1.

[0024] In a preferred embodiment, a safety valve assembly 21 and a first fracturing octo-connection assembly 22 are provided on the branch pipeline 2. The first fracturing octo-connection assembly 22 is arranged at the outlet of the branch pipeline 2, and the safety valve assembly 21 is arranged between the first fracturing octo-connection assembly 22 and the main pipeline 1. The safety valve assembly 21 includes a manual gate valve 211 and a hydraulic gate valve 212 arranged in sequence on the branch pipeline 2. One end of the manual gate valve 211 is communicated with the four-way pipe 32, and the other end is communicated with the hydraulic gate valve 212. The other end of the hydraulic gate valve 212 is communicated with the first fracturing octo-connection assembly 22. In addition, in order to further implement safe production, a pressure relief tank can also be installed between the safety valve assembly 21 and the first fracturing octo-connection assembly 22 to prevent accidents caused by excessive pressure.

[0025] In a preferred embodiment, a second fracturing octo-connection assembly 11 is provided at the outlet end of the main pipeline 1. There is a diverter base 111 at the bottom of the second fracturing octo-connection assembly 11, and the second fracturing octo-connection assembly 11 is arranged on the diverter base 111.

[0026] In a preferred embodiment, there is a branch pipeline skid 23 at the bottom of the branch pipeline 2, and the branch pipeline 2 is arranged on the branch pipeline skid 23.

[0027] In a preferred embodiment, the outlet of the four-way pipe 32 opposite to the branch pipeline 2 is blocked by a blind flange 321.

[0028] In a preferred embodiment, connecting flange plates are provided at both ends of the short pipe section 31.

[0029] In a preferred embodiment, a molybdenum disulfide layer is laid on the inner surfaces of the main pipeline 1 and the branch pipeline 2.

[0030] The above embodiments disclose a novel ultra-high pressure large-diameter modular diverter manifold. In practical applications, fluid enters from the inlet of the main pipeline 1 and is distributed to each branch pipeline according to a predetermined ratio and flow rate after the diversion of the first fracturing octo-connection assembly 22 and the second fracturing octo-connection assembly 11, and is finally transported to different working areas.

[0031] The number of the branch pipelines 2 can be increased or decreased according to actual situations. The branch pipelines 2 are communicated with the four-way pipe 32, and the four-way pipe 32 and the connecting short pipe 31 are combined and then connected to the main pipeline 1. When it is necessary to increase the branch pipelines 2, only one set of short pipe components 3 needs to be added.

[0032] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, several improvements can be made without departing from the principle of the present invention, and these improvements should also be regarded as the protection scope of the present invention.

Claims

1. A novel ultra-high pressure large-diameter modular flow dividing manifold, characterized in that: It includes a main pipeline (1) and a branch pipeline (2). At least one branch pipeline (2) is communicatively connected to the main pipeline (1). The branch pipeline (2) is communicatively connected to the main pipeline (1) through a set of short joint assemblies (3). The main pipeline (1) and the branch pipeline (2) are in an "F" shape.

2. A novel ultra-high pressure large-diameter modular flow-dividing manifold according to claim 1, characterized in that: The short joint assembly (3) includes a short joint pipe (31) and a four-way pipe (32). The four-way pipe (32) is connected into the main pipeline (1). The short joint pipe (31) is connected into the main pipeline (1) through the four-way pipe (32) and is collinear with the main pipeline (1). One end of the short joint pipe (31) is connected to the four-way pipe (32), and the other end is connected to the next short joint assembly (3) or the outlet of the main pipeline (1).

3. A novel ultra-high pressure large-diameter modular shunt manifold according to claim 2, characterized in that: A safety valve assembly (21) and a first fracturing eight-way assembly (22) are arranged on the branch pipeline (2). The first fracturing eight-way assembly (22) is arranged at the outlet of the branch pipeline (2). The safety valve assembly (21) is arranged between the first fracturing eight-way assembly (22) and the main pipeline (1).

4. A novel ultra-high pressure large-diameter modular flow-dividing manifold according to claim 3, characterized in that: The safety valve assembly (21) includes a manual gate valve (211) and a hydraulic gate valve (212) arranged in sequence on the branch pipeline (2). One end of the manual gate valve (211) is connected to the four-way pipe (32), and the other end is connected to the hydraulic gate valve (212). The other end of the hydraulic gate valve (212) is connected to the first fracturing eight-way assembly (22).

5. A novel ultra-high pressure large-diameter modular flow dividing manifold according to claim 1, characterized in that: A second fracturing eight-way assembly (11) is arranged at the outlet end of the main pipeline (1). There is a diverter head base (111) at the bottom of the second fracturing eight-way assembly (11), and the second fracturing eight-way assembly (11) is arranged on the diverter head base (111).

6. A novel ultra-high pressure large-diameter modular flow splitting manifold according to claim 1, characterized in that: There is a branch pipeline bottom skid (23) at the bottom of the branch pipeline (2), and the branch pipeline (2) is arranged on the branch pipeline bottom skid (23).

7. A novel ultra-high pressure large-diameter modular flow splitting manifold according to claim 2, characterized in that: The outlet of the four-way pipe (32) opposite to the branch pipeline (2) is blocked by a blind flange (321).

8. A novel ultra-high pressure large-diameter modular shunt manifold according to claim 2, characterized in that: Both ends of the short joint pipe (31) are provided with connecting flange plates.

9. A novel ultra-high pressure large-diameter modular flow-dividing manifold according to claim 1, characterized in that: The inner surfaces of the main pipeline (1) and the branch pipeline (2) are lined with a molybdenum disulfide layer.

Images