Gas well shaft drainage device capable of continuously moving
By designing a continuously movable gas wellbore drainage device, the combination of fluid channels and moving parts is used to solve the problem of accidental closing of the plunger bypass mechanism, stable lifting and efficient fluid discharge are achieved, and gas well production efficiency is improved.
Patent Information
- Application Number
- CN202422636421.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-10-30
AI Technical Summary
The bypass mechanism of the plunger relies on the buffer at the wellhead and bottom to open and close the valve, which is prone to accidental closing and cannot effectively lift fluid accumulation.
A continuously movable gas wellbore drainage device is designed, through the combination of the first fluid passage and the second fluid passage, the movement of the moving member realizes a stable opening and closing of the bypass mechanism, avoiding accidental closing, and combining thread connections to ensure the stability and sealing of the device.
Ensure the stability of the bypass mechanism during operation, prevent accidental closure, improve the efficiency and speed of fluid discharge, reduce the weight of the device, and improve the production efficiency of the gas well.
Smart Images
Figure CN223164513U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of oil and gas drainage gas production, in particular to a liquid drainage device for a continuously moving gas well wellbore. Background Technique
[0002] During the natural gas development process, as the gas well continuously produces, the produced water of natural gas gradually increases. When the gas well cannot bring all the produced water out of the wellbore, liquid accumulation will gradually occur in the gas well wellbore. To ensure the stable production of the gas well, various drainage gas production measures are usually adopted to remove the liquid accumulation in the wellbore and extend the production cycle of the gas well. Among them, the plunger gas lift drainage gas production process is the drainage gas production process with the widest application range. The plunger gas lift drainage gas production method uses the energy of the gas well itself to push the plunger in the tubing to lift water, without the need for other power equipment, and the production cost is low. The maximum cross-sectional area of the plunger is very close to the inner cross-sectional area of the production tubing. When the plunger moves in the tubing, the resistance it receives is very large, which affects the downward speed of the plunger. Therefore, a bypass mechanism is provided on the plunger. During the downward movement of the plunger, the bypass mechanism opens, and the liquid and gas pass through the bypass mechanism from below the plunger to above the plunger. During the upward movement of the plunger, the bypass mechanism closes, and the spaces at both ends of the plunger are not connected. The gas lifts the plunger and the liquid above the plunger upward to achieve the discharge of the liquid accumulation in the tubing.
[0003] However, the opening and closing of the valve in the bypass mechanism mainly rely on the plunger hitting the buffers at the wellhead and the bottom of the well. However, during the movement of the plunger in the tubing, it is inevitable to collide with the tubing wall, causing the valve in the bypass mechanism of the plunger to close accidentally before reaching the predetermined position, which fails to play the role of lifting the liquid accumulation. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a liquid drainage device for a continuously moving gas well wellbore to solve the problem in the background technique that the bypass mechanism of the plunger relies on the plunger hitting the buffers at the wellhead and the bottom of the well to open and close the valve, which is prone to accidental closing and cannot lift the liquid accumulation.
[0005] To achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A liquid drainage device for a continuously moving gas well wellbore of the utility model includes a device body and connectors detachably and symmetrically connected to both ends of the device body respectively;
[0007] A first fluid channel is opened at the top of the device body, and a second fluid channel is opened at the bottom. A moving part is arranged in the first fluid channel and the second fluid channel. Openings communicating with the first fluid channel and the second fluid channel respectively are arranged on the device body. When the moving part moves in the first fluid channel or the second fluid channel, according to the positional relationship between the moving part and the openings, the truncation or connection of the first fluid channel or the second fluid channel is realized.
[0008] As a further improvement, the device body is connected to the connecting piece by a screw thread.
[0009] As a further improvement, a communication channel is provided inside the connecting piece. When the connecting piece is connected to the device body, the communication channel will communicate with the first fluid channel or the second fluid channel.
[0010] As a further improvement, an inlet is also provided on the communication channel.
[0011] As a further improvement, the first fluid channel and the second fluid channel are arranged along the axial direction of the device body.
[0012] As a further improvement, openings are provided at one ends of the first fluid channel and the second fluid channel away from the connecting piece.
[0013] As a further improvement, the openings are inclined, and the openings are symmetrically arranged on both sides of the device body.
[0014] As a further improvement, the inclination angle is 60 - 75°.
[0015] As a further improvement, a step is provided in the middle of the device body.
[0016] As a further improvement, steps are provided on the outer surface of the connecting piece.
[0017] The utility model has achieved the following technical effects compared with the prior art:
[0018] The bypass mechanism of the utility model is composed of a first fluid channel, a second fluid channel and an opening. The opening and closing of the bypass mechanism are realized by the movement of a moving part, ensuring the stability of the bypass mechanism during operation, effectively preventing the bypass mechanism from accidentally closing halfway, avoiding the problem of insufficient water lifting capacity caused by bypass failure, and at the same time, through the moving part, it can also avoid the problem that the bypass mechanism cannot be closed after the device body reaches the bottom of the well, resulting in the plunger body being stuck at the bottom of the well.
[0019] The utility model can better achieve the discharge of accumulated liquid by providing a first fluid channel and a second fluid channel. The provided second fluid channel will, under the push of gas, increase the rising speed of the device during discharge, significantly improving the efficiency of accumulated liquid discharge. In addition, due to the provision of a dual-fluid channel, the structure of the device body is lightened. Compared with the traditional plunger structure, the overall weight is reduced, making the device descend or ascend faster. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the overall structure of the continuously movable gas well wellbore liquid drainage device of the utility model;
[0021] Figure 2 Schematic diagram of the device body of the continuous motion gas well wellbore liquid drainage device of the present utility model;
[0022] Figure 3 Schematic diagram of the connecting piece of the continuous motion gas well wellbore liquid drainage device of the present utility model;
[0023] Figure 4 Schematic diagram of the motion of the continuous motion gas well wellbore liquid drainage device of the present utility model.
[0024] Reference numerals: 1, device body; 2, connecting piece; 3, opening; 4, step; 5, first fluid channel; 6, second fluid channel; 7, communication channel; 8, inlet; 9, moving part. Detailed implementation manners
[0025] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary only for explaining the present application and should not be construed as limiting the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.
[0026] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0027] As Figure 1 shown, a continuous motion gas well wellbore liquid drainage device of the present utility model includes a device body 1 and connecting pieces 2 detachably and symmetrically connected to both ends of the device body 1 respectively; a first fluid channel 5 is opened at the top of the device body 1, and a second fluid channel 6 is opened at the bottom. A moving part 9 is arranged in the first fluid channel 5 and the second fluid channel 6. An opening 3 communicating with the first fluid channel 5 and the second fluid channel 6 respectively is arranged on the device body 1. When the moving part 9 moves in the first fluid channel 5 or the second fluid channel 6, according to the positional relationship between the moving part 9 and the opening 3, the truncation or communication of the first fluid channel 5 or the second fluid channel 6 is realized.
[0028] In the embodiment, the moving part 9 is a block, and the size of the moving part 9 matches the diameters of the first fluid passage 5 and the second fluid passage 6, so that the moving part 9 can move smoothly in the first fluid passage 5 or the second fluid passage 6 to close the first fluid passage 5 or the second fluid passage 6. However, this is not the only case. The moving part 9 can also be designed as a sphere or other shapes according to specific usage requirements, and no further limitations are imposed here. The device body 1 and the connecting part 2 are connected by screw threads. In the embodiment, screw thread connection is adopted, which can ensure the stability between the device body 1 and the connecting part 2, and can achieve sealing after connection to prevent fluid leakage. In addition, when using screw thread connection, the connection and disassembly of the device body 1 and the connecting part 2 can be realized without complex tools, and the installation process is simple.
[0029] A communication passage 7 is provided in the connecting part 2. When the connecting part 2 is connected to the device body 1, the communication passage 7 will communicate with the first fluid passage 5 or the second fluid passage 6. In the embodiment, the diameters of the first fluid passage 5, the second fluid passage 6 and the communication passage 7 match each other. When the device body 1 is connected to the connecting part 2, the first fluid passage 5 and the second fluid passage 6 will communicate with the communication passage 7, enabling the moving part 9 to move therein.
[0030] An inlet 8 is also provided on the communication passage 7. The inlet 8 in the embodiment is Figure 4 the C port in. During use, the fluid will enter the device body from the inlet 8.
[0031] The first fluid passage 5 and the second fluid passage 6 are arranged along the axial direction of the device body 1. In the embodiment, the first fluid passage 5 and the second fluid passage 6 are axially arranged, which helps to increase the structural stability of the device body 1 and reduce the vibration and stress generated by fluid impact.
[0032] An opening 3 is provided at one end of the first fluid passage 5 and the second fluid passage 6 away from the connecting part 2. As Figure 1 or Figure 2 shown, in the embodiment, the position where the opening 3 is provided on the device body 1 is close to the middle of the device body 1, and the opening 3 is symmetrically arranged with the middle of the device body 1 as the center.
[0033] The opening 3 is inclined and symmetrically arranged on both sides of the device body 1. The inclination angle is 60 - 75°. In the embodiment, the provided opening 3 is similar to a horn structure, and the shape of the opening 3 is processed. By changing the size of the opening 3, the downward speed of the device can be effectively changed, the fluid resistance inside the device can be reduced, and thus the production efficiency of the gas well can be improved.
[0034] In the embodiment, the inclination angle of the opening 3 is preferably 60°. The smaller the angle between the opening 3 and the upward movement direction of the plunger body, the smaller the resistance suffered by the gas and the liquid when flowing through the opening 3, and the greater the downward speed of the plunger body. Setting the angle between 60° and 75° results in a relatively small resistance when the gas and liquid flow through.
[0035] A step 4 is provided in the middle of the device body 1. The outer surface of the connecting piece 2 is provided with a step 4. As in the embodiment Figure 1 shown, the provided step 4 is an annular step 4. The purpose of setting the step 4 is that, on the one hand, by using the structure of multiple annular steps 4, the stability of the device body 1 and the connecting piece 2 can be increased; on the other hand, it also plays a role of transition and guidance. The step 4 enables the fluid to more smoothly change the flow direction when passing through the first fluid channel 5 and the second fluid channel 6, reduces the fluid resistance, and improves the efficiency of liquid accumulation discharge. Before using this device, first analyze the production state of the gas well, run a wellbore cleaning operation to ensure the wellbore is unobstructed, select the structure of this device with matching dimensions, place the moving part 9 into the first flow channel and the second flow channel to ensure that the moving part 9 can move back and forth, and then connect the connecting piece 2 to both ends of the device body 1 through threads. After assembly, the structure is as Figure 1 shown.
[0036] When using this device, as Figure 4 shown in the right view in, place this device into the gas wellbore. At this time, when the device reaches the appropriate position, the fluid will enter the inside of the first fluid channel 5 and the second fluid channel 6 through A1, A2, B1, B2 (the opening 3). Therefore, the fluid will push the moving part 9 to block C1, C2 (the inlet 8);
[0037] When the gas well is opened, as Figure 4 shown in the left view in, the fluid in the wellbore will move upward under the action of the gas. During the upward movement, the fluid enters the second fluid channel 6 from the bottom C2 port of this device. Under the push of the gas, the fluid is pushed, causing the moving part 9 to block the A2 and B2 ports; the moving part 9 in the first fluid channel 5 will move from the C1 port to A1 and B1 under the action of gravitational acceleration and block them, enabling this device to lift the liquid out of the wellbore.
[0038] It should be noted that in the description of this application, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise stated, the meaning of "a plurality of" is two or more.
[0039] Any process or method description set forth in the flowchart or described otherwise herein may be understood to represent modules, segments, or portions of code including one or more executable instructions for implementing specific logical functions or processes, and the scope of the preferred embodiments of the present application includes additional implementations in which functions may be performed out of the order shown or discussed, including in a substantially simultaneous manner or in reverse order according to the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application pertain.
[0040] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0041] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.
[0042] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only for explaining the present application and should not be construed as limiting the present application. On the contrary, the embodiments of the present application include all changes, modifications, and equivalents falling within the spirit and scope of the appended claims.
[0043] Examples of the present application will be described in detail below. Examples of the examples are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The examples described below with reference to the drawings are exemplary and are intended to be used for explaining the present application and should not be construed as limiting the present application.
Claims
1. A liquid drainage device for a continuously moving gas well wellbore, characterized in that, It includes a device body and connectors that are detachably and symmetrically connected to both ends of the device body respectively; A first fluid passage is provided at the top of the device body, and a second fluid passage is provided at the bottom. A moving member is provided in the first fluid passage and the second fluid passage. Openings that are respectively communicated with the first fluid passage and the second fluid passage are provided on the device body. When the moving member moves in the first fluid passage or the second fluid passage, the truncation or connection of the first fluid passage or the second fluid passage is realized according to the positional relationship between the moving member and the openings.
2. The liquid drainage device for a continuously moving gas well wellbore according to claim 1, wherein The device body and the connectors are connected by screw threads.
3. The liquid drainage device for a continuously moving gas well wellbore according to claim 2, characterized in that, A communication passage is provided in the connectors. When the connectors are connected to the device body, the communication passage will be communicated with the first fluid passage or the second fluid passage.
4. The liquid drainage device for a continuously moving gas well wellbore according to claim 3, wherein, An inlet is further provided on the communication passage.
5. The liquid drainage device for a continuously moving gas well wellbore according to claim 1, wherein The first fluid passage and the second fluid passage are arranged along the axial direction of the device body.
6. The drain device for a gas well wellbore capable of continuous movement according to claim 5, characterized in that, Openings are provided at the ends of the first fluid passage and the second fluid passage away from the connectors.
7. The liquid drainage device for a continuously moving gas well wellbore according to claim 6, characterized in that, The openings are inclined and symmetrically arranged on both sides of the device body.
8. The liquid drainage device for a continuously moving gas well wellbore according to claim 7, wherein The inclination angle is 60 - 75°.
9. The liquid drainage device for a continuously moving gas well wellbore according to claim 1, characterized in that, A step is provided in the middle of the device body.
10. The liquid drainage device for a continuously moving gas well wellbore according to claim 1, characterized in that, Steps are provided on the outer surface of the connectors.