Natural gas front energizing fracturing device

Abstract

The utility model relates to the technical field of fracturing, in particular to a natural gas front energizing fracturing device which comprises a conveying pipe, an electronic valve is installed at the lower end of the conveying pipe, the middle of the conveying pipe is connected and communicated with a gas conveying pipe, a valve I is arranged at one end of the gas conveying pipe, and a gas conveying opening is formed in the other end of the gas conveying pipe. The upper end of the conveying pipe is connected and communicated with a liquid conveying pipe, one end of the liquid conveying pipe is provided with a valve II, the other end of the liquid conveying pipe is provided with a liquid conveying opening, and the top end of the conveying pipe is connected and communicated with a discharging pipe. By arranging the gas conveying pipe and the liquid conveying pipe, gas conveying and liquid conveying are integrated, operation is easy, switching use is convenient according to stratums with different properties, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of fracturing, in particular to a natural gas pre - energy - increasing fracturing device. Background Technique

[0002] The fracturing process is a technical means commonly used in oil and gas field development to increase production capacity. After an oil and gas well has been produced for a certain stage, the production capacity and permeability decrease. By fracturing the oil and gas reservoir, the ability to drain oil and gas can be enhanced, effectively increasing the oil and gas production.

[0003] Fracturing methods are divided into two categories: hydraulic fracturing and high - energy gas fracturing. Hydraulic fracturing and high - energy gas fracturing rely on fracturing fluid and high - energy gas for fracturing operations respectively to adapt to different formations. However, the existing well - head fracturing device has a single structure and can only be used as a liquid or gas transportation channel, which is inconvenient to switch when facing different formations.

[0004] Therefore, there is an urgent need to provide a natural gas pre - energy - increasing fracturing device that integrates liquid and gas transportation. Content of the Utility Model

[0005] In order to overcome the shortcomings of the existing fracturing well - head device with a single structure, which can only be used as a liquid or gas transportation channel and is inconvenient to switch when facing different formations, the utility model provides a natural gas pre - energy - increasing fracturing device that integrates liquid and gas transportation.

[0006] To solve the above problems, the utility model adopts the following technical solutions: A natural gas pre - energy - increasing fracturing device includes a delivery pipe, a delivery pipe, and, an electronic valve is installed at the lower end of the delivery pipe, a gas transmission pipe is connected and communicated in the middle of the delivery pipe, a valve Ⅰ is arranged at one end of the gas transmission pipe, a gas outlet is arranged at the other end of the gas transmission pipe, an infusion pipe is connected and communicated at the upper end of the delivery pipe, a valve Ⅱ is arranged at one end of the infusion pipe, an infusion port is arranged at the other end of the infusion pipe, a discharge pipe is connected and communicated at the top end of the delivery pipe, a valve Ⅲ is arranged at one end of the discharge pipe, a connection port is arranged at the other end of the discharge pipe, and a casing for docking with the well - head is arranged at the bottom end of the delivery pipe.

[0007] Furthermore, the delivery pipe is connected to the gas transmission pipe, the infusion pipe, and the discharge pipe by flanges, and the connection method is simple, firm, and convenient for disassembly.

[0008] Furthermore, a connecting pipe is connected and communicated on the discharge pipe, a temperature detector is arranged on the support frame of the connecting pipe, a temperature detection rod is arranged on the temperature detector, the temperature detection rod passes through the connecting pipe and extends into the interior of the delivery pipe, symmetrically distributed alarms are installed outside the temperature detector, and a sealing ring is arranged on the temperature detection rod, and the sealing ring is used to fill the gap between the temperature detection rod and the connecting pipe.

[0009] Further, a blocking disk is rotatably arranged inside the lower end of the conveying pipe. Both ends of the blocking disk pass through the conveying pipe and are connected with warning signs. Sealing rings are sleeved on both ends of the blocking disk. The sealing rings are used to fill the gaps between both ends of the blocking disk and the conveying pipe. A torsion spring for resetting the blocking disk is connected between the warning sign and the conveying pipe.

[0010] Further, a protective shell is arranged between the warning sign and the conveying pipe.

[0011] Further, a dust-proof cover is arranged outside the sleeve.

[0012] Further, anti-slip pads are arranged on the electronic valve, Valve I, Valve II and Valve III.

[0013] Compared with the prior art, the utility model has the following technical effects: 1. By arranging an air delivery pipe and an infusion pipe, the device integrates gas and liquid transportation, is simple to operate, and is convenient to switch and use according to different formations, with a wide range of applications.

[0014] 2. By arranging a temperature detector and a temperature detection rod, real-time monitoring of the temperature of the conveying pipe and the wellhead is realized. When the wellhead temperature exceeds 200 degrees, an alarm is started for alarm reminder to ensure the output, quality and safety of oil and gas extraction and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a first three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 It is a second three-dimensional structural schematic diagram of the utility model.

[0017] Figure 3 It is a sectional structural schematic diagram of the infusion pipe, connecting pipe and sleeve of the utility model.

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the support frame, temperature detector and temperature detection rod of the utility model.

[0019] Figure 5 It is a three-dimensional structural schematic diagram of the blocking disk, warning sign and sealing ring of the utility model.

[0020] Among them: 1 - conveying pipe, 2 - electronic valve, 3 - gas transmission pipe, 4 - valve I, 5 - gas outlet, 6 - liquid infusion pipe, 7 - valve II, 8 - liquid infusion port, 9 - discharge pipe, 10 - valve III, 11 - connection port, 12 - casing, 13 - connecting pipe, 14 - support frame, 15 - temperature detector, 16 - temperature detection rod, 17 - sealing ring, 18 - alarm, 19 - retaining disc, 20 - sign, 21 - sealing ring, 22 - torsion spring, 23 - protective shell, 24 - dust cover, 25 - anti-slip pad. Specific embodiments

[0021] The following further illustrates the technical solution with specific embodiments. It should be noted that: The words indicating directions such as up, down, left, and right mentioned in this article are only for the positions of the shown structures in the corresponding drawings. The serial numbers assigned to the components in this article, such as: first, second, etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. And as used in this application: connections, couplings, unless otherwise specified, all include direct and indirect connections (couplings).

[0022] Embodiment 1

[0023] Please refer to Figures 1 - 3 , a natural gas pre - energy - enhanced fracturing device, including a conveying pipe 1, a conveying pipe 1 and, the lower end of the conveying pipe 1 is installed with an electronic valve 2, the opening and closing of the electronic valve 2 can control the overall opening and closing of the device, the middle part of the conveying pipe 1 is connected and communicated with a gas transmission pipe 3, the gas transmission pipe 3 is used for transporting fracturing gas, one end of the gas transmission pipe 3 is provided with a valve I 4, the other end of the gas transmission pipe 3 is provided with a gas outlet 5, the upper end of the conveying pipe 1 is connected and communicated with a liquid infusion pipe 6, the liquid infusion pipe 6 is used for transporting fracturing liquid, so that it is convenient to switch and use according to the formation conditions, one end of the liquid infusion pipe 6 is provided with a valve II 7, the other end of the liquid infusion pipe 6 is provided with a liquid infusion port 8, the top end of the conveying pipe 1 is connected and communicated with a discharge pipe 9, the discharge pipe 9 is used for discharging oil and gas, one end of the discharge pipe 9 is provided with a valve III 10, the other end of the discharge pipe 9 is provided with a connection port 11, the bottom end of the conveying pipe 1 is provided with a casing 12 for docking with the wellhead, a dust cover 24 is arranged outside the casing 12, the dust cover 24 is used to block external dust and prevent the dust from getting stuck at the docking place between the casing 12 and the wellhead, and anti - slip pads 25 are arranged on the electronic valve 2, valve I 4, valve II 7 and valve III 10 to play an anti - slip role.

[0024] When performing energy - enhanced fracturing work, the gas transmission pipe 3 is installed at the wellhead. Subsequently, different fracturing methods are selected according to the different properties of the oil - field formation. Valve I 4 is selected to be opened, and high - energy gas quickly enters the gas transmission pipe 3 from the gas inlet 5, and then enters the bottom of the well through the delivery pipe 1. While valve II 7 is selected to be opened, the fracturing fluid enters the infusion pipe 6 from the infusion port 8 and then quickly enters the bottom of the well. After the high - energy gas or the fracturing fluid is injected, the bottom - hole pressure rapidly rises until it is equal to or exceeds the pressure required for formation fracture, causing multiple radial fractures to occur near the oil - gas well, thus completing the fracturing. After that, during the oil - gas production process, valve III 10 is started, and the oil - gas is discharged from the connection port 11 of the discharge pipe 9.

[0025] Embodiment 2

[0026] Based on Embodiment 1, please refer to Figure 3 and Figure 4 The top of the discharge pipe 9 is connected and communicated with a connecting pipe 13. A temperature detector 15 is arranged on the support frame 14 of the connecting pipe 13. A temperature detection rod 16 is arranged on the temperature detector 15. The temperature detection rod 16 passes through the connecting pipe 13 and extends into the interior of the delivery pipe 1 for temperature detection. Alarm devices 18 are symmetrically installed on the left and right outside the temperature detector 15. A sealing ring 17 is arranged on the temperature detection rod 16. The sealing ring 17 is used to fill the gap between the temperature detection rod 16 and the connecting pipe 13 and plays a sealing role.

[0027] During the fracturing operation of this device, the temperature detector 15 uses the temperature detection rod 16 to monitor the temperature of the delivery pipe 1 and the wellhead in real - time. When the wellhead temperature exceeds 200 degrees, the alarm devices 18 are started for alarm reminder, so as to ensure the output, quality and safety of oil - gas production and transportation.

[0028] Please refer to Figure 3 and Figure 5 A baffle plate 19 is rotatably arranged inside the lower end of the delivery pipe 1. Both ends of the baffle plate 19 pass through the delivery pipe 1 and are connected with a sign 20. Sealing rings 21 are sleeved on both the left and right ends of the baffle plate 19. The sealing rings 21 are used to fill the gaps between both ends of the baffle plate 19 and the delivery pipe 1 to prevent gas or liquid in the delivery pipe 1 from leaking through the gaps between the baffle plate 19 and the delivery pipe 1. A torsion spring 22 for resetting the baffle plate 19 is connected between the sign 20 and the delivery pipe 1. The torsion spring 22 is sleeved on the end of the baffle plate 19. A protective shell 23 is arranged between the sign 20 and the delivery pipe 1. The torsion spring 22 is located inside the protective shell 23, and the protective shell 23 protects the torsion spring 22 to prevent foreign objects from getting stuck in the torsion spring 22.

[0029] Initially, the baffle plate 19 seals the space of the conveying pipe 1, and the signboard 20 is in a horizontal state. When the device is working, gas or fracturing fluid impacts the baffle plate 19, causing the baffle plate 19 to rotate and open the conveying pipe 1, and the signboard 20 rotates accordingly to a vertical state, so as to visually represent the state of the device and at the same time facilitate the staff to check whether the conveying pipe 1 is fully opened or closed.

[0030] The above are only specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A natural gas pre - energy - enhanced fracturing device, characterized in that, It includes a delivery pipe (1), an electronic valve (2) is installed at the lower end of the delivery pipe (1), a gas delivery pipe (3) is connected and communicated in the middle of the delivery pipe (1), a valve I (4) is arranged at one end of the gas delivery pipe (3), a gas delivery port (5) is arranged at the other end of the gas delivery pipe (3), an infusion pipe (6) is connected and communicated at the upper end of the delivery pipe (1), a valve II (7) is arranged at one end of the infusion pipe (6), an infusion port (8) is arranged at the other end of the infusion pipe (6), a discharge pipe (9) is connected and communicated at the top end of the delivery pipe (1), a valve III (10) is arranged at one end of the discharge pipe (9), a connection port (11) is arranged at the other end of the discharge pipe (9), and a casing (12) for docking with the wellhead is arranged at the bottom end of the delivery pipe (1).

2. The natural gas pre - energy - enhanced fracturing device according to claim 1, wherein, The delivery pipe (1) is connected to the gas delivery pipe (3), the infusion pipe (6), and the discharge pipe (9) by flanges. The connection method is simple, firm, and convenient for disassembly.

3. The natural gas pre - energy - enhanced fracturing device according to claim 1, characterized in that, A connection pipe (13) is connected and communicated to the discharge pipe (9). A temperature detector (15) is arranged on a support frame (14) of the connection pipe (13). A temperature detection rod (16) is arranged on the temperature detector (15). The temperature detection rod (16) passes through the connection pipe (13) and extends into the interior of the delivery pipe (1). Alarm devices (18) symmetrically distributed are installed outside the temperature detector (15). A sealing ring (17) is arranged on the temperature detection rod (16). The sealing ring (17) is used to fill the gap between the temperature detection rod (16) and the connection pipe (13).

4. A natural gas pre - energy - enhanced fracturing device as described in claim 1, characterized in that, A retaining disc (19) is rotatably arranged inside the lower end of the delivery pipe (1). Both ends of the retaining disc (19) pass through the delivery pipe (1) and are connected to a warning sign (20). Sealing rings (21) are sleeved on both ends of the retaining disc (19). The sealing rings (21) are used to fill the gaps between both ends of the retaining disc (19) and the delivery pipe (1). A torsion spring (22) for resetting the retaining disc (19) is connected between the warning sign (20) and the delivery pipe (1).

5. The natural gas pre - energy - enhanced fracturing device according to claim 4, characterized in that, A protective shell (23) is arranged between the warning sign (20) and the delivery pipe (1).

6. The natural gas pre - energy - enhanced fracturing device according to claim 1, wherein, A dust-proof cover (24) is arranged outside the casing (12).

7. The natural gas pre - energy - enhanced fracturing device according to claim 1, characterized in that, Anti-slip pads (25) are arranged on the electronic valve (2), the valve I (4), the valve II (7), and the valve III (10).

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