Air pressure type fluid conveying device

Abstract

The utility model relates to the technical field of oil and gas well production, in particular to an air pressure type fluid conveying device to solve the problems that in flowing well maintenance, the labor intensity of operators is large, and potential safety hazards exist. The device comprises a liquid storage tank and a gas storage tank, the liquid storage tank is used for storing fluid and is provided with a liquid discharge pipe communicated with a wellhead liquid injection point; the gas storage tank is communicated with the liquid storage tank through a gas supply pipe, and gas can be conveyed into the liquid storage tank to drive fluid to flow towards a wellhead liquid injection point. Liquid is directly conveyed to a well mouth in an air pressure driving mode, the aerial work requirement is reduced, safety risks caused by operation instability are reduced, the operation environment and safety are remarkably improved, consumption of human resources is reduced, and a safer, more economical and more efficient operation mode is provided for operators.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas well production, in particular to a pneumatic fluid conveying device. Background Technique

[0002] During the process of oil extraction, the operation of conveying mobile fluids on site is frequent and complex, especially in the maintenance of flowing wells. In order to extend the service life of flowing wells, regular wax removal operations are crucial. Operators must climb to the wellhead 4 - 5 meters high, reach the wax removal port by grasping the handrail ladder, and manually lubricate it. However, this process not only requires labor but also has certain safety hazards. In addition to wax removal, in order to prevent wax deposition and corrosion of oil well pipe strings, wax removers and corrosion inhibitor and scale inhibitor need to be added regularly; in order to reduce the viscosity of crude oil, viscosity reducers will be added. These chemical agents are usually stored in 200L large barrels. When handling, multiple operators must cooperate to pour the large barrel of agent into small barrels and then pour it from the small barrels into the chemical injection funnel. Such operation steps are cumbersome, consuming a large amount of labor and increasing safety risks due to the instability during climbing and chemical agent transfer. Therefore, how to simplify the operation process and improve safety has become an important issue in oil extraction. Content of the Utility Model

[0003] The utility model provides a pneumatic fluid conveying device to alleviate the problems of high labor intensity and potential safety hazards for operators during the maintenance of flowing wells.

[0004] In order to alleviate the above technical problems, the technical solution provided by the utility model lies in:

[0005] This solution provides a pneumatic fluid conveying device, including a liquid storage tank and a gas storage tank;

[0006] The liquid storage tank is used for storing fluids and has a drain pipe connected to the liquid injection point of the wellhead;

[0007] The gas storage tank is connected to the liquid storage tank through a gas supply pipe and can transport gas into the liquid storage tank to drive the fluid to flow towards the liquid injection point of the wellhead.

[0008] Furthermore,

[0009] The gas supply pipe is inserted into the upper part of the liquid storage tank;

[0010] The liquid inlet of the drain pipe is arranged at the bottom of the liquid storage tank.

[0011] Furthermore,

[0012] It further includes a gas replenishment mechanism;

[0013] The gas replenishment mechanism is connected to the gas storage tank.

[0014] Furthermore,

[0015] A first pressure control valve and a first pressure gauge are successively arranged on the pipeline between the gas replenishing mechanism and the gas storage tank.

[0016] Furthermore,

[0017] A second pressure gauge is arranged on the side wall of the gas storage tank.

[0018] Furthermore,

[0019] A second pressure control valve is arranged on the pipeline between the gas storage tank and the liquid storage tank.

[0020] Furthermore,

[0021] A third pressure gauge is arranged on the liquid storage tank.

[0022] Furthermore,

[0023] An electrostatic discharger is arranged on the liquid storage tank.

[0024] Furthermore,

[0025] A liquid replenishing port is arranged on the liquid storage tank.

[0026] The beneficial effects of the pneumatic fluid conveying device in the present utility model are analyzed as follows:

[0027] This device includes a liquid storage tank and a gas storage tank; the liquid storage tank is used for storing fluid and has a liquid discharge pipe communicated with the wellhead liquid injection point; the gas storage tank is communicated with the liquid storage tank through a gas supply pipe and can convey gas into the liquid storage tank to drive the fluid to flow towards the wellhead liquid injection point.

[0028] By means of pneumatic drive, the liquid is directly conveyed to the wellhead, reducing the need for high-altitude operations, lowering the safety risks caused by operational instability, significantly improving the operating environment and safety, reducing the consumption of human resources, and providing a safer, more economical and efficient operation mode for the operators. Description of the Drawings

[0029] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the related art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the related art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 It is a schematic structural diagram when a large amount of liquid is filled;

[0031] Figure 2 It is a schematic structural diagram when a small amount of liquid is filled.

[0032] Icon:

[0033] 100 - Liquid storage tank; 110 - Drain pipe; 120 - Third pressure gauge; 130 - Static electricity eliminator; 140 - Liquid filling port;

[0034] 200 - Gas storage tank; 210 - Gas supply pipe; 220 - Second pressure gauge; 230 - Second pressure control valve; 300 - Gas supplement mechanism; 310 - First pressure control valve; 320 - First pressure gauge. Detailed implementation manners

[0035] Embodiment 1

[0036] In the maintenance of flowing well, in order to extend the service life of the flowing well, regular paraffin removal operation is crucial. The operator must climb to the wellhead 4 - 5 meters high, reach the paraffin removal port by grasping the handrail ladder, and manually lubricate it. This process not only requires manpower but also has certain safety hazards. In addition to paraffin removal, in order to prevent wax deposition and corrosion of the oil well pipe string, paraffin remover and corrosion inhibitor and scale inhibitor need to be added regularly; in order to reduce the viscosity of crude oil, viscosity reducer will be added. These chemical agents are usually stored in 200L large barrels. When handling, multiple operators must cooperate to pour the large barrel of agent into small barrels and then pour it from the small barrels into the chemical addition funnel, which not only consumes a lot of manpower but also increases the safety risk due to the height and instability during the transfer of the agent.

[0037] In view of this, as Figure 1 and Figure 2 shown, this solution provides a pneumatic fluid conveying device to alleviate the above problems.

[0038] This device includes a liquid storage tank 100 and a gas storage tank 200;

[0039] The liquid storage tank 100 is used for storing fluid and has a drain pipe 110 connected to the liquid injection point of the wellhead;

[0040] The gas storage tank 200 is connected to the liquid storage tank 100 through a gas supply pipe 210 and can convey gas into the liquid storage tank 100 to drive the fluid to flow towards the liquid injection point of the wellhead.

[0041] When using this device, lubricating oil, paraffin remover, corrosion inhibitor and scale inhibitor, etc. can be conveyed to the wellhead according to on - site requirements, reducing the handling and climbing operations of the operator, and improving the labor efficiency while reducing the labor intensity and safety risk.

[0042] The structure of this device is as Figure 1 shown:

[0043] The gas supply pipe 210 is inserted into the upper part of the liquid storage tank 100;

[0044] The liquid inlet of the drain pipe 110 is arranged at the bottom of the liquid storage tank 100;

[0045] Also includes a gas replenishing mechanism 300;

[0046] The gas replenishing mechanism 300 is in communication with the gas storage tank 200;

[0047] The pipeline between the gas replenishing mechanism 300 and the gas storage tank 200 is provided with a first pressure control valve 310 and a first pressure gauge 320 in sequence;

[0048] A second pressure gauge 220 is provided on the side wall of the gas storage tank 200;

[0049] The pipeline between the gas storage tank 200 and the liquid storage tank 100 is provided with a second pressure control valve 230;

[0050] The liquid storage tank 100 is provided with a third pressure gauge 120 .

[0051] Specifically, the gas replenishing mechanism 300 can be a gas delivery device such as a micro air compressor, a nitrogen high-pressure storage tank or an air pump. The first pressure gauge 320 and the first pressure control valve 310 are used in conjunction with each other to monitor and adjust the gas pressure of the gas replenishing mechanism 300 flowing to the gas storage tank 200, so as to replenish the gas into the gas storage tank 200 in time; when using this device, it is necessary to open the second pressure control valve 230 to allow the gas in the gas storage tank 200 to flow to the liquid storage tank 100, so that the gas gathers at the top of the liquid storage tank 100, applies pressure to the liquid in the liquid storage tank 100, and causes the liquid to flow out from the drain pipe 110 at the bottom of the liquid storage tank 100.

[0052] Preferably, a control valve may be provided on the discharge pipe 110 outside the liquid storage tank 100 so as to be closed in time after the liquid filling demand is met.

[0053] In this solution, the liquid storage tank 100 is provided with an electrostatic discharger 130. When filling with dangerous liquids such as flammable and explosive liquids, the operator can release his own static electricity by touching the electrostatic discharger 130 to avoid accidents of static electricity fire.

[0054] In this solution, the liquid storage tank 100 is provided with a liquid replenishing port 140. Since the device can store liquid for a long time, the spare parts can be directly replenished into the liquid storage tank 100 through the liquid replenishing port 140 without the need for a separate equipment warehouse for storage.

[0055] Embodiment 2

[0056] When adding liquids with large usage volume such as paraffin removers and corrosion and scale inhibitors, the method of use in the first embodiment is preferred. When adding liquids with small usage volume such as lubricating oil, the equipment of the device can be appropriately simplified, such as Figure 2 As shown:

[0057] At the upper part of the liquid storage tank 100, there are a liquid replenishing port 140, a first pressure gauge 320, a gas supply pipe 210 and a liquid discharge pipe 110. The liquid storage tank 100 is inflated through a high-pressure air cylinder, so that the pressurized liquid flows out from the liquid discharge pipe 110 at the bottom of the liquid storage tank 100, and the pressure in the liquid storage tank 100 is monitored in real time through the first pressure gauge 320 to ensure safe use. More preferably, control valves can be respectively arranged outside the liquid storage tank 100 for the liquid replenishing port 140, the first pressure gauge 320, the gas supply pipe 210 and the liquid discharge pipe 110 to improve the sealing performance of the liquid storage tank 100 and facilitate the long-term storage of the internal liquid.

[0058] The beneficial effects of this solution are analyzed as follows:

[0059] This solution optimizes and improves the traditional methods for wax removal operation and liquid filling in the maintenance of flowing wells, significantly improving the safety and efficiency of the operation. In the traditional methods, operators need to perform high-altitude operations and manually carry and fill liquids such as lubricating oil, wax remover, corrosion inhibitor and scale inhibitor. This not only has a high labor intensity, but also has great potential safety hazards. This solution uses a pneumatic drive method to directly transport the liquid to the wellhead, reducing the need for high-altitude operations and the safety risks caused by operational instability. At the same time, the design of the static electricity release device and the liquid replenishing port of the device ensures the operational safety when dealing with flammable and explosive liquids. In addition, the device allows long-term storage of the liquid, reducing the need for frequent replenishment, and through the pressure gauge and control valve for real-time monitoring, it ensures the simplicity of the operation and the accuracy of fluid transportation. Generally speaking, this solution not only improves the working efficiency of the maintenance of flowing wells, but also significantly improves the operation environment and safety, reduces the consumption of human resources, and provides a safer, more economical and efficient operation method for operators.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pneumatic fluid conveying device, characterized in that: It comprises a liquid storage tank (100) and a gas storage tank (200); The liquid storage tank (100) is used to store fluid and has a liquid discharge pipe (110) connected to a wellhead injection point; The gas storage tank (200) is connected to the liquid storage tank (100) via a gas supply pipe (210), and is capable of conveying gas into the liquid storage tank (100) to drive the fluid to flow toward the wellhead injection point.

2. The pneumatic fluid delivery device according to claim 1, characterized in that: The air supply pipe (210) is plugged into the upper portion of the liquid storage tank (100); The liquid inlet of the liquid discharge pipe (110) is arranged at the bottom of the liquid storage tank (100).

3. The pneumatic fluid delivery device according to claim 2, characterized in that: Also included is a gas replenishment mechanism (300); The gas replenishing mechanism (300) is in communication with the gas storage tank (200).

4. The pneumatic fluid delivery device according to claim 3, characterized in that: The pipeline between the gas replenishing mechanism (300) and the gas storage tank (200) is provided with a first pressure control valve (310) and a first pressure gauge (320) in sequence.

5. The pneumatic fluid delivery device according to claim 1, characterized in that: A second pressure gauge (220) is provided on the side wall of the gas storage tank (200).

6. The pneumatic fluid delivery device according to claim 1, characterized in that: The pipeline between the gas storage tank (200) and the liquid storage tank (100) is provided with a second pressure control valve (230).

7. The pneumatic fluid delivery device according to claim 1, characterized in that: The liquid storage tank (100) is provided with a third pressure gauge (120).

8. The pneumatic fluid delivery device according to claim 1, characterized in that: The liquid storage tank (100) is provided with an electrostatic discharger (130).

9. The pneumatic fluid delivery device according to claim 1, characterized in that: The liquid storage tank (100) is provided with a liquid replenishing port (140).

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