Large-drift-diameter high-pressure manifold for oil field fracturing

Abstract

The utility model provides a large-drift-diameter high-pressure manifold for oil field fracturing, which belongs to the technical field of oil field fracturing equipment and comprises a square central pivot pipe, dredging holes are formed in four side surfaces of the square central pivot pipe, side fixing discs are fixedly connected to the side surfaces of the square central pivot pipe and arranged on the outer sides of the dredging holes, and the dredging holes are communicated with the side fixing discs. A plurality of threaded holes are formed in the side face of the side fixing disc in an annular array mode, connecting pieces are arranged between the adjacent square pivot pipes, and communicating structures are arranged on the outer sides of the square pivot pipes. Due to the fact that the side fixing disc is arranged on the side face of the square central pivot pipe, when other pipelines are connected, only the connecting disc on the side face of the pipeline needs to be tightly attached to the side face of the side fixing disc, the connecting disc can be directly connected into the threaded hole of the side fixing disc in a threaded mode through the penetrating hole by a screw, and operation steps can be simplified in the disassembling and assembling process.

Description

Technical Field

[0001] This utility model belongs to the technical field of oilfield fracturing equipment, and in particular relates to large-diameter high-pressure manifolds for oilfield fracturing. Background Technology

[0002] Large-diameter high-pressure manifolds for oilfield fracturing are an important piece of equipment used in oil and gas field development, mainly for high-pressure liquid transport and fracturing operations;

[0003] High-pressure fracturing manifold: refers to the process of injecting high-pressure fluid into underground rock formations during oil and gas extraction to increase oil and gas production.

[0004] Working principle:

[0005] Fracturing operations typically involve injecting high-pressure fluids (such as water, chemicals, etc.) into underground rock formations through fracturing manifolds to crack the rock and increase the flow channels for oil and gas. During fracturing, the manifold system needs to maintain a stable high pressure while ensuring rapid fluid flow.

[0006] The present invention, disclosed in CN114687720A, is a 175MPa high-pressure large-diameter fracturing manifold, comprising a skid assembly and a manifold assembly. The manifold assembly is provided at the top of the skid assembly. Several clamp-type acid-resistant butterfly valves are provided at intervals on the outer walls of both sides of the manifold assembly. Branch pipe assemblies are provided on both sides of the manifold assembly, and two branch pipe assemblies are connected by a first flange.

[0007] Existing large-diameter high-pressure manifolds for oilfield fracturing still have the following shortcomings:

[0008] 1. In the existing design, connecting multiple pipes requires the use of screws and nuts to fix them. However, it is quite cumbersome to fix both screws and nuts during installation or disassembly.

[0009] 2. When fracturing tubing is used for fluid delivery, it needs to supply fluid in multiple directions. During this process, it is necessary to ensure the stability of the fluid delivery pressure. Utility Model Content

[0010] The purpose of this utility model is to solve the problem that in the existing technology, screws and nuts need to be fixed during installation or disassembly, which is cumbersome. When fracturing pipes are used for fluid delivery, they need to supply fluid in multiple directions. During this process, it is necessary to ensure the stability of the fluid delivery pressure. The proposed solution is a large-diameter high-pressure manifold for oilfield fracturing.

[0011] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0012] A large-diameter high-pressure manifold for oilfield fracturing includes: a square central pipe, with unblocking holes on all four sides of the square central pipe; a side fixing plate fixedly connected to the side of the square central pipe, the side fixing plate being located outside the unblocking holes; a number of threaded holes arranged in a ring array on the side of the side fixing plate; a connector between adjacent square central pipes; a connecting structure on the outside of the square central pipe; and a supporting structure on the lower side of the square central pipe.

[0013] Preferably, the connector includes a connecting pipe, with fixed rings fixedly connected to both ends of the connecting pipe, and the fixed rings having a plurality of through holes arranged in a ring array on their sides.

[0014] Preferably, the inner diameters of the through hole and the threaded hole are equal, a short-pitch screw is threaded into the through hole, and the end of the short-pitch screw is threaded into the threaded hole.

[0015] Preferably, the communication structure includes a control valve, the end of which is fixedly connected to a No. 1 connecting plate, the side of which is in close contact with the side of the side fixing plate, and a long-pitch screw is internally threaded onto the No. 1 connecting plate, the long-pitch screw being threaded into a threaded hole.

[0016] Preferably, a side pipe is provided on the side of the square central pipe away from the control valve, and a second connecting plate is fixedly connected to the side of the side pipe. The side of the second connecting plate is in close contact with the side of the side fixing plate, and a long-pitch screw is internally threaded onto the second connecting plate.

[0017] The supporting structure includes a base plate, a support column fixedly connected to the lower surface of the square central tube, the support column fixedly connected to the upper surface of the base plate, an arc-shaped support plate fixedly connected to the lower side of the side fixing plate, two support rods fixedly connected to the lower side of the arc-shaped support plate, and the support rods fixedly connected to the upper surface of the base plate.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. This utility model sets a side fixing plate on the side of the square central tube. When connecting other pipes, it is only necessary to press the connecting plate on the side of the pipe tightly against the side of the side fixing plate. The screw can be directly threaded into the threaded hole of the side fixing plate through the through hole. This simplifies the operation steps during disassembly and assembly.

[0020] 2. This utility model has unblocking holes on the four sides of the square central tube, which can be connected to other pipes through the side fixing plate set on the outside. Furthermore, a control valve is set on the side of the square central tube, which can control the flow rate and pressure inside the pipe. Attached Figure Description

[0021] Figure 1 This is a side view of the structure of the large-diameter high-pressure manifold for oilfield fracturing proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of a single side of the large-diameter high-pressure manifold for oilfield fracturing proposed in this utility model;

[0023] Figure 3 for Figure 2 Enlarged view of part A;

[0024] Figure 4 This is a schematic diagram of the disassembled structure of the large-diameter high-pressure manifold for oilfield fracturing proposed in this utility model.

[0025] In the diagram: 1. Square central tube, 2. Side fixing plate, 3. Threaded hole, 4. No. 1 connecting plate, 5. Long-distance screw, 6. Control valve, 7. Short-distance screw, 8. No. 2 connecting plate, 9. Side tube, 10. Support column, 11. Arc-shaped support plate, 12. Support rod, 13. Connecting tube, 14. Base plate, 15. Fixing ring plate. Detailed Implementation

[0026] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0027] Reference Figure 1-Figure 4 A large-diameter high-pressure manifold for oilfield fracturing includes: a square central pipe 1, with unblocking holes on all four sides of the square central pipe 1; a side fixing plate 2 fixedly connected to the side of the square central pipe 1, the side fixing plate 2 being located outside the unblocking holes; several threaded holes 3 arranged in a ring array on the side of the side fixing plate 2; a connector between adjacent square central pipes 1; a connecting structure on the outside of the square central pipe 1; and a support structure on the lower side of the square central pipe 1. By providing unblocking holes on the four sides of the square central pipe 1, other pipelines can be connected through the side fixing plates 2 on the outside. A control valve is provided on the side of the square central pipe 1 to control the flow rate and pressure inside the pipeline.

[0028] The connector includes a connecting pipe 13, with fixed ring discs 15 fixedly connected to both ends of the connecting pipe 13. The fixed ring discs 15 have several through holes arranged in a ring array on the side. The inner diameter of the through holes and the threaded holes 3 are equal. A short screw 7 is threaded into the through hole, and the end of the short screw 7 is threaded into the threaded hole 3.

[0029] The connecting structure includes a control valve 6, with a first connecting plate 4 fixedly connected to the end of the control valve 6. The side of the first connecting plate 4 is tightly attached to the side of the side fixing plate 2. A long-pitch screw 5 is internally threaded onto the first connecting plate 4 and threaded into the threaded hole 3. A side pipe 9 is provided on the side of the square central tube 1 away from the control valve 6. A second connecting plate 8 is fixedly connected to the side of the side pipe 9 and the side of the second connecting plate 8 is tightly attached to the side of the side fixing plate 2. A long-pitch screw 5 is internally threaded onto the second connecting plate 8. By setting the side fixing plate 2 on the side of the square central tube 1, when connecting other pipes, it is only necessary to press the connecting plate on the side of the pipe tightly against the side of the side fixing plate 2, and the screw can be directly threaded into the threaded hole 3 of the side fixing plate 2 through the through hole. This simplifies the operation steps during disassembly and assembly.

[0030] The support structure includes a base plate 14, a support column 10 fixedly connected to the lower surface of the square central tube 1, the support column 10 fixedly connected to the upper surface of the base plate 14, an arc-shaped support plate 11 fixedly connected to the lower side of the side fixing plate 2, two support rods 12 fixedly connected to the lower side of the arc-shaped support plate 11, and the support rods 12 fixedly connected to the upper surface of the base plate 14.

[0031] The functional principle of this utility model can be explained through the following operation modes:

[0032] By setting the side fixing plate 2 on the side of the square central tube 1, when connecting other pipes, it is only necessary to press the connecting plate on the side of the pipe against the side of the side fixing plate 2, and then the screw can be directly threaded into the threaded hole 3 of the side fixing plate 2 through the through hole. This simplifies the operation steps during disassembly and assembly.

[0033] By providing unblocking holes on the four sides of the square central pipe 1, the remaining pipes can be connected through the side fixing plate 2 set on the outside. Furthermore, by providing control valves on the sides of the square central pipe 1, the flow rate and pressure inside the pipes can be controlled.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A large-diameter high-pressure manifold for oilfield fracturing, characterized in that, The device includes a square central tube (1), which has unblocking holes on all four sides. A side fixing plate (2) is fixedly connected to the side of the square central tube (1). The side fixing plate (2) is located outside the unblocking holes. The side of the side fixing plate (2) has several threaded holes (3) arranged in a ring array. A connector is provided between adjacent square central tubes (1). A connecting structure is provided on the outside of the square central tube (1). A support structure is provided on the lower side of the square central tube (1).

2. The large-diameter high-pressure manifold for oilfield fracturing according to claim 1, characterized in that, in: The connector includes a connecting pipe (13), and a fixing ring disc (15) is fixedly connected to both ends of the connecting pipe (13). The fixing ring disc (15) has several through holes arranged in a ring array on its side.

3. The large-diameter high-pressure manifold for oilfield fracturing according to claim 2, characterized in that, in: The inner diameters of the through hole and the threaded hole (3) are equal. A short screw (7) is threaded into the through hole, and the end of the short screw (7) is threaded into the threaded hole (3).

4. The large-diameter high-pressure manifold for oilfield fracturing according to claim 1, characterized in that, in: The communication structure includes a control valve (6), and a first connecting plate (4) is fixedly connected to the end of the control valve (6). The side of the first connecting plate (4) is closely attached to the side of the side fixing plate (2). A long-pitch screw (5) is threadedly connected to the first connecting plate (4), and the long-pitch screw (5) is threadedly connected to the threaded hole (3).

5. The large-diameter high-pressure manifold for oilfield fracturing according to claim 4, characterized in that, in: The square central tube (1) is provided with a side tube (9) on the side away from the control valve (6). A second connecting plate (8) is fixedly connected to the side of the side tube (9). The side of the second connecting plate (8) is close to the side of the side fixing plate (2). A long-pitch screw (5) is internally threaded onto the second connecting plate (8).

6. The large-diameter high-pressure manifold for oilfield fracturing according to claim 1, characterized in that, in: The support structure includes a base plate (14), a support column (10) is fixedly connected to the lower surface of the square central tube (1), the support column (10) is fixedly connected to the upper surface of the base plate (14), an arc-shaped support plate (11) is fixedly connected to the lower side of the side fixing plate (2), and two support rods (12) are fixedly connected to the lower side of the arc-shaped support plate (11), the support rods (12) are fixedly connected to the upper surface of the base plate (14).

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