Ball throwing manifold device for fracturing construction

Abstract

A ball injection manifold device for fracturing construction relates to the technical field of oil and gas well exploration and development and comprises a ball injection pipe body, the ball injection pipe body is fixedly connected to a fracturing bottom pry through a supporting seat, a ball inlet is formed in the top of the ball injection pipe body, and a sealing assembly is arranged at the upper end of the ball inlet; an inlet valve is arranged at the inlet end of the ball throwing pipe body, an outlet valve is arranged at the outlet end of the ball throwing pipe body, and the inlet valve and the outlet valve are integrally formed with the ball throwing pipe body; a ball cylinder is arranged in the ball throwing pipe body, the ball cylinder is communicated with a ball inlet, the two ends of the ball cylinder are controlled to be opened and closed through an inlet valve and an outlet valve respectively, a plurality of plugging balls are arranged in the ball cylinder, and the ball throwing pipe body and the fracturing main pipeline are arranged in a prizing mode, so that transportation, disassembly and assembly are convenient; the inlet valve and the outlet valve are integrated with the ball throwing pipe body, so that the sealing performance is good, and the leakage risk is reduced; and the ball throwing pipe body is directly connected with the fracturing main pipeline through the union joint, so that the use amount of the pipeline is reduced, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas well exploration and development, in particular to a ball-dropping manifold device for fracturing construction. Background Art

[0002] At the fracturing construction site of shale oil, shale gas and coal gas, it is necessary to carry out fracturing ball throwing according to the fracturing construction process, temporarily plug the perforated and fracturing area, and carry out the next fracturing in the unfractured perforated area. However, the current ball throwing process at the fracturing site is relatively cumbersome and the pipelines are chaotic. Generally, pipelines, unions and plug valves are combined to carry out fracturing ball throwing. There are too many pipelines and maintenance is quite difficult. Once puncture leakage occurs at the fracturing site, maintenance is time-consuming and laborious, which seriously affects the operation of the fracturing construction site. In addition, the cost of using plug valves for ball throwing is relatively high, and the plug valve requires high sealing with the pipeline during installation. Once the sealing is not good, it will cause leakage. Utility Model Content

[0003] In view of the above shortcomings of the prior art, the purpose of the utility model is to provide a ball dropping manifold device for fracturing construction, which can solve the above technical problems.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A ball-throwing manifold device for fracturing construction comprises a ball-throwing tube body, the ball-throwing tube body is fixedly connected to a fracturing bottom skid via a support seat, a goal hole is provided on the top of the ball-throwing tube body, a sealing assembly is provided on the upper end of the goal hole; an inlet valve is provided at the inlet end of the ball-throwing tube body, and an outlet valve is provided at the outlet end, the inlet valve and the outlet valve are both integrally formed with the ball-throwing tube body; a ball barrel is provided in the ball-throwing tube body, the ball barrel is connected to the goal hole, the two ends of the ball barrel are controlled to switch via the inlet valve and the outlet valve respectively, and a plurality of blocking balls are provided in the ball barrel.

[0006] Preferably, both the inlet and outlet ends of the ball pitching tube body are provided with end covers.

[0007] Preferably, the sealing assembly comprises a union sealing ring, a union plug, a tight cap and a retaining ring, and the union sealing ring, the union plug, the tight cap and the retaining ring are sequentially installed at the upper end of the ball opening.

[0008] Preferably, the inlet valve is a manual valve, a hydraulic valve, a manual-hydraulic integrated valve or an electrically driven valve.

[0009] Preferably, the outlet valve is a manual valve, a hydraulic valve, a manual-hydraulic integrated valve or an electrically driven valve.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The ball-throwing pipe body and the fracturing main line of the utility model are arranged on the same bottom skid, which is convenient for transportation and disassembly.

[0012] 2. The utility model saves costs by using ordinary valves to replace plug valves. At the same time, the ordinary valve and the ball-casting pipe body adopt an integrated structure with good sealing performance, thereby reducing the risk of leakage.

[0013] 3. Both ends of the ball-throwing pipe body of the utility model are connected to the main fracturing line through union joints, which is easy to install, reduces the usage of various pipelines, elbows and straight pipes, and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Description of reference numerals:

[0017] 1-ball throwing tube body, 2-support seat, 3-bottom skid, 4-ball inlet, 5-inlet valve, 6-outlet valve, 7-ball cylinder, 8-sealing ball, 9-end cover, 10-union sealing ring, 11-union plug, 12-tightening cap, 13-retaining ring. DETAILED DESCRIPTION

[0018] The following is a detailed description of the invention of the utility model by way of examples in conjunction with the accompanying drawings of the specification. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Example

[0019] like Figure 1 As shown, the utility model discloses a ball-throwing manifold device for fracturing construction, including a ball-throwing tube body 1, which is fixedly connected to a fracturing bottom skid 3 through a support seat 2. By arranging the ball-throwing tube body 1 and the fracturing main line on the same bottom skid 3, transportation and disassembly are facilitated; a goal hole 4 is provided on the top of the ball-throwing tube body 1, and a sealing assembly is provided on the upper end of the goal hole 4. The sealing assembly includes a union sealing ring 10, a union plug 11, a tight cap 12 and a retaining ring 13. The union sealing ring 10, the union plug 11, the tight cap 12 and the retaining ring 13 are sequentially installed on the upper end of the goal hole 4. By arranging the sealing assembly, the fracturing fluid can be prevented from flowing out of the goal hole 4. When installing the ball, the retaining ring 13, the tight cap 12, the union plug 11 and the union sealing ring 10 can be disassembled in sequence, and then they can be installed in reverse order when sealing.

[0020] The inlet and outlet ends of the ball throwing tube body 1 are both provided with end covers 9, and the two end covers 9 are respectively connected to the multi-way connectors on the fracturing main line through unions, which reduces the use of various pipelines, elbows and straight pipes and reduces costs; the inlet end of the ball throwing tube body 1 is provided with an inlet valve 5, and the inlet valve 5 adopts one or more of a manual valve, a hydraulic valve, a hand-liquid integrated valve or an electric drive valve; the outlet end of the ball throwing tube body 1 is provided with an outlet valve 6, and the outlet valve 6 adopts one or more of a manual valve, a hydraulic valve, a hand-liquid integrated valve or an electric drive valve; the inlet valve 5 and the outlet valve 6 are both formed integrally with the ball throwing tube body 1 by free forging technology, have good sealing performance, and reduce the risk of leakage.

[0021] A ball barrel 7 is arranged in the ball throwing tube body 1 , and the ball barrel 7 is connected to the ball entry port 4 . The two ends of the ball barrel 7 are respectively controlled to switch by an inlet valve 5 and an outlet valve 6 . A plurality of blocking balls 8 are arranged in the ball barrel 7 .

[0022] Principle of use: During normal fracturing construction, the inlet valve 5 and the outlet valve 6 on the ball-dropping pipe body 1 are all closed. When the ball needs to be dropped, the outlet valve 6 is opened first, and then the inlet valve 5 is opened. The fracturing fluid will flush the sealing ball 8 in the ball barrel 7 into the wellbore, thereby sealing the wellbore after perforation fracturing, ensuring the smooth fracturing of shale oil, shale gas, and coal gas projects.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and application concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A ball-dropping manifold device for fracturing construction, comprising a ball-dropping pipe body (1), characterized in that: The ball-throwing tube body (1) is fixedly connected to the fracturing bottom skid (3) via a support seat (2); a ball-throwing port (4) is provided at the top of the ball-throwing tube body (1); a sealing assembly is provided at the upper end of the ball-throwing port (4); an inlet valve (5) is provided at the inlet end of the ball-throwing tube body (1); and an outlet valve (6) is provided at the outlet end; the inlet valve (5) and the outlet valve (6) are both integrally formed with the ball-throwing tube body (1); a ball cylinder (7) is provided inside the ball-throwing tube body (1); the ball cylinder (7) is connected to the ball-throwing port (4); the two ends of the ball cylinder (7) are respectively controlled to switch via the inlet valve (5) and the outlet valve (6); and a plurality of sealing balls (8) are provided inside the ball cylinder (7).

2. A ball dropping manifold device for fracturing construction as claimed in claim 1, characterized in that: The inlet end and the outlet end of the ball pitching tube body (1) are both provided with end covers (9).

3. A ball dropping manifold device for fracturing construction as claimed in claim 1, characterized in that: The sealing assembly comprises a union sealing ring (10), a union plug (11), a tight cap (12) and a retaining ring (13), wherein the union sealing ring (10), the union plug (11), the tight cap (12) and the retaining ring (13) are sequentially mounted on the upper end of the ball inlet (4).

4. A ball dropping manifold device for fracturing construction as claimed in claim 1, characterized in that: The inlet valve (5) is a manual valve, a hydraulic valve, a manual-hydraulic integrated valve or an electrically driven valve.

5. A ball dropping manifold device for fracturing construction as claimed in claim 1, characterized in that: The outlet valve (6) is a manual valve, a hydraulic valve, a manual-hydraulic integrated valve or an electrically driven valve.

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