Vortex atomization drainage gas production device and method
By installing a vortex atomizing drainage and gas production device inside the tubing, the gas-liquid two-phase fluid is adjusted into a vortex and atomized. By using gas to carry liquid droplets, the high failure rate and high cost of the existing drainage and gas production process are solved, and efficient drainage of accumulated liquid and increased gas well production are achieved.
Patent Information
- Application Number
- CN202411695904.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2026-05-26
AI Technical Summary
Existing drainage and gas production technologies suffer from drawbacks such as numerous components, high failure rates, and high costs. They are particularly effective for low-pressure, low-production gas wells and require external energy input.
A vortex atomization drainage and gas extraction device is adopted. This device is installed inside the oil pipe. The gas-liquid two-phase fluid is adjusted into a vortex and atomized by the vortex forming part and the atomizing part. The gas carries the liquid droplets, reducing slippage loss. The fluid is lifted by the pressure of the oil casing annulus, realizing the discharge of accumulated liquid without external energy input.
It increases gas well production, extends gas well life, reduces failure rate and cost, has a simple structure with no moving parts, and improves gas-liquid carrying capacity.
Smart Images
Figure CN122082689A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of natural gas well drainage and gas production technology, specifically relating to a vortex atomization drainage and gas production device and a vortex atomization drainage and gas production method. Background Technology
[0002] In the later stages of natural gas extraction, formation productivity declines and gas well production decreases. When the gas well production drops below the critical fluid carrying capacity, fluid begins to accumulate in the wellbore. This accumulation further reduces the bottom hole flowing pressure, thereby reducing the gas well's production. Therefore, it is necessary to take corresponding measures to remove the bottom hole fluid, increase gas well production, and extend the gas well's lifespan.
[0003] Currently, commonly used methods for fluid drainage and gas production mainly include foam drainage, gas lift drainage, and mechanical pumping drainage. Foam drainage involves adding a foaming agent to the wellbore to reduce the density of the fluid at the bottom of the well, increasing the gas's fluid-carrying capacity. Gas lift drainage utilizes a high-pressure gas source at the surface to inject a large amount of gas into the wellbore, improving the fluid flow pattern and reducing its density, then using the injected gas to lift the fluid to the surface. Mechanical pumping drainage involves installing a pumping unit at the wellhead, using its mechanical energy to lift the fluid in the wellbore to the surface, thus restoring production to the well. However, all of these fluid drainage and gas production processes require external energy input, and they suffer from drawbacks such as numerous components, high failure rates, and high costs. Furthermore, their effectiveness is limited for low-pressure, low-production gas wells, resulting in a low return on investment.
[0004] Therefore, it is evident that there is an urgent need to improve the aforementioned liquid drainage and gas extraction process. Summary of the Invention
[0005] The purpose of this application is to provide a vortex atomization liquid drainage and gas collection device and a vortex atomization liquid drainage and gas collection method to overcome at least one of the defects of existing liquid drainage and gas collection processes such as foam drainage, gas lift process drainage, and mechanical pumping drainage, such as many parts, high failure rate, and high cost.
[0006] To overcome the above problems, the first aspect of this application provides a vortex atomizing drainage and gas extraction device. The device is used to install inside an oil pipe. The device has an atomizing part, which has a connecting pipe open at both ends and a jet pipe open at only one end. The first open end of the connecting pipe is connected to a tubular vortex forming part, and the second open end of the connecting pipe is connected to a first through hole opened on the closed end of the jet pipe. The connecting pipe gradually narrows from its first open end to its second open end. A second through hole is opened on the side wall of the jet pipe. The second through hole is connected to one end of a first channel, and the other end of the first channel is used to connect to a third through hole opened on the oil pipe. During gas extraction, the gas-liquid two-phase fluid enters from the end of the vortex forming part away from the first open end of the connecting pipe, and the gas-liquid two-phase fluid is ejected from the end of the jet pipe away from the second open end of the connecting pipe.
[0007] In a specific embodiment of this application, a flow guiding structure is provided inside the vortex forming section.
[0008] In a specific embodiment of this application, the flow guiding structure is a spiral structure.
[0009] In a specific embodiment of this application, the vortex forming part is a non-variable diameter circular tube.
[0010] In a specific embodiment of this application, the connecting pipe is a variable diameter circular pipe.
[0011] In a specific embodiment of this application, the injection pipe is a non-variable diameter circular pipe.
[0012] In a specific embodiment of this application, the radius of the vortex forming part is smaller than the radius of the jet pipe.
[0013] A second aspect of this application provides a vortex atomization liquid drainage and gas extraction method, comprising: Remove each section of tubing from the target wellbore; A third through hole is made in the target oil pipe, and at least one section of the oil pipe is the target oil pipe; The vortex atomizing drainage and gas production device according to the first aspect of this application is placed into the target wellbore and fixedly connected to the wall of the target oil pipe, and the first channel of the vortex atomizing drainage and gas production device is connected to the third through hole. Lower the tubing into the target wellbore; Initiate gas extraction operations; The vortex forming section adjusts the incoming gas-liquid two-phase fluid into a vortex; The vortex enters the atomizing section, which atomizes the liquid in the vortex. The droplets generated after atomization are carried out of the target wellbore by the gas.
[0014] In a specific embodiment of this application, the method further includes: The first installation interval is determined to achieve the optimal drainage and gas production effect. The first installation interval is the interval between adjacent vortex atomization drainage and gas production devices after the vortex atomization drainage and gas production device is installed on the oil pipe, and the first installation interval is the interval between adjacent third through holes. The target tubing is determined based on the first installation interval to trigger the opening of a third through hole in the target tubing.
[0015] In a specific embodiment of this application, determining the first installation interval to achieve the optimal drainage and gas collection effect includes: Numerical simulation analysis was performed on the gas extraction process after the vortex atomization drainage gas extraction device was inserted into the oil pipe. The installation interval of the vortex atomization drainage and gas collection device corresponding to the optimal drainage and gas collection effect in the numerical simulation analysis is taken as the first installation interval.
[0016] In the above technical solution, the vortex forming section transforms the flow pattern of the gas-liquid two-phase fluid into a vortex, and the atomizing section transforms the vortex into a mist flow. The gas-liquid carrying method changes from liquid film carrying to droplet carrying. The mist flow significantly reduces liquid slippage loss, thereby improving the gas-liquid carrying effect. Simultaneously, the atomizing section is connected to a first channel, which allows a small amount of gas to enter the tubing from the annulus, thus partially lifting the fluid inside the tubing with the help of the annulus, further improving the gas-liquid carrying effect within the tubing. This improved gas-liquid carrying effect within the tubing allows for the smooth discharge of accumulated liquid, overcoming the problems of reduced gas well productivity and lifespan caused by accumulated liquid. Furthermore, the vortex atomization drainage and gas production device requires no external energy input throughout the drainage process, relying solely on the wellbore's own energy, resulting in lower costs. In addition, the vortex atomization drainage and gas production device has a simple overall structure with no moving parts, leading to lower failure rates and costs, and a longer service life compared to more complex devices with moving parts.
[0017] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description
[0018] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. In the drawings: Figure 1 This schematic diagram illustrates the structure of a vortex atomizing liquid drainage and gas collection device according to an embodiment of this application. Figure 2 A schematic diagram of eddy current flow patterns according to an embodiment of this application is shown. Figure 3 This diagram schematically illustrates the effect of an atomizing nozzle according to an embodiment of the present application atomizing a vortex. Figure 4 This schematically illustrates a first process diagram of the vortex atomization liquid drainage and gas collection method according to an embodiment of this application; Figure 5 This schematically illustrates a second process diagram of the vortex atomization liquid drainage and gas collection method according to an embodiment of this application; Figure 6 The diagram illustrates the pressure drop using different numbers of vortex atomizing liquid drainage and gas extraction devices; Figure 7 The diagram illustrates the production effect of gas well A obtained by the vortex atomization drainage gas production method according to an embodiment of this application.
[0019] Explanation of reference numerals in the attached figures In the figure, 1 is the vortex forming part; 2 is the atomizing part; 3 is the first channel; 4 is the oil pipe; 5 is the first through hole; 6 is the second through hole; and 7 is the third through hole. Detailed Implementation
[0020] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the embodiments of this application.
[0021] If the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.
[0022] The vortex atomization liquid drainage and gas extraction device according to this application is described below with reference to the accompanying drawings.
[0023] Figure 1 A structural diagram of a vortex atomizing liquid drainage and gas collection device according to an embodiment of this application is shown. (Combined with...) Figure 1 As shown, the vortex atomizing drainage and gas collection device provided in this application embodiment is used to be installed inside the oil pipe 4. The vortex atomizing drainage and gas collection device has a tubular vortex forming part 1, an atomizing part 2 and a first channel 3.
[0024] Specifically, the atomizing section 2 has a connecting pipe open at both ends and a spray pipe open at only one end. The first open end of the connecting pipe is connected to one end of the vortex forming section 1, and the second open end of the connecting pipe is connected to a first through hole 5 opened on the closed end of the spray pipe. The connecting pipe gradually narrows from its first open end to its second open end. A second through hole 6 is opened on the side wall of the spray pipe, and the second through hole 6 is connected to one end of the first channel 3. The other end of the first channel 3 is used to connect to a third through hole 7 opened on the oil pipe 4. During gas extraction, the gas-liquid two-phase fluid enters from the end of the vortex forming section 1 away from the first open end of the connecting pipe, and the gas-liquid two-phase fluid is sprayed out from the end of the spray pipe away from the second open end of the connecting pipe.
[0025] The principle of the vortex atomizing drainage and gas collection device provided in the above embodiments of this application after being inserted into the oil pipe 4 is as follows: After the gas-liquid two-phase fluid flows into the vortex forming part 1, the flow state of the gas-liquid two-phase fluid is first changed by the vortex forming part 1, that is, the flow state of the gas-liquid two-phase fluid is changed into a high-speed rotating annular flow, i.e., a vortex. Then, the vortex is further atomized by the atomizing part 2. After atomization, the liquid is dispersed in the gas in the form of small droplets, so that the liquid carrying method of the gas changes from liquid film carrying to liquid droplet carrying, and the flow state of the gas-liquid two-phase fluid changes from vortex to mist flow. The mist flow greatly reduces the slippage loss of the liquid and reduces the average density of the gas-liquid two-phase fluid in the oil pipe 4, thereby improving the liquid carrying effect of the gas. Furthermore, during the actual production process on site, due to the high pressure inside the annulus and the low pressure inside the tubing 4, some of the gas inside the annulus can enter the tubing 4 through the first channel 3 connected to the injection pipe during the liquid drainage and gas extraction process. This allows the fluid inside the tubing 4 to be lifted by the force of the annulus, improving the liquid flow effect inside the tubing 4 and further improving the liquid carrying effect of the gas inside the tubing 4.
[0026] In summary, the vortex atomization drainage and gas production device provided in the above embodiments of this application improves the liquid-carrying effect of gas in tubing 4. It can discharge accumulated liquid in the wellbore using only its own energy without external energy input, and has no moving parts, resulting in a low failure rate. Furthermore, its simple components reduce the cost of drainage. The discharge of accumulated liquid in the wellbore increases the gas well's production and extends its lifespan.
[0027] As an optional embodiment of this application, a flow guiding structure is provided in the vortex forming part 1, and the flow guiding structure is preferably a spiral structure.
[0028] As an optional embodiment of this application, the vortex forming part 1 is a non-variable diameter circular tube.
[0029] As an optional embodiment of this application, the connecting pipe is a variable diameter circular pipe.
[0030] As an optional embodiment of this application, the injection pipe is a non-variable diameter circular pipe.
[0031] As an optional embodiment of this application, the vortex forming part 1 is a non-variable diameter circular pipe, the injection pipe is a non-variable diameter circular pipe, and the radius of the vortex forming part 1 is smaller than the radius of the injection pipe.
[0032] As an example, the specific structure of the vortex atomizing liquid drainage and gas collection device in this example is as follows: Figure 1 As shown. Figure 1 As shown, the vortex forming section 1 has a spiral structure for guiding the flow; therefore, the vortex forming section 1 in this example can be called the vortex guiding section. The connecting pipe in the atomizing section 2 is a variable diameter circular pipe, while the injection pipe is a non-variable diameter circular pipe; therefore, the atomizing section 2 in this example is called the atomizing nozzle. Figure 1 The principle of liquid drainage and gas collection achieved by the vortex atomization liquid drainage and gas collection device shown is as follows: 1) Combining Figure 2 As shown, the gas-liquid two-phase fluid first rotates at high speed after passing through the spiral structure inside the vortex guide section. Due to the high density and inertia of the liquid, the liquid will rotate along the inside of the pipe wall, while the gas has a low density and low inertia, so the gas rotates in the middle. The flow state of the gas-liquid two-phase fluid after passing through the vortex guide section becomes a high-speed rotating annular flow, i.e., a vortex, which prepares for the atomization of the gas-liquid two-phase fluid. Figure 2 The image shows the air core and liquid film of the vortex.
[0033] 2) Combining Figure 3 As shown, because the atomizing nozzle includes a connecting pipe with a variable diameter, the flow area of the vortex before entering the atomizing nozzle is large, and the flow area after entering the atomizing nozzle suddenly becomes smaller. This causes the flow velocity of the vortex to suddenly increase and the pressure to suddenly decrease when it passes through the atomizing nozzle. Therefore, the vortex fluid will be rapidly atomized at an extremely high flow velocity at the atomizing nozzle. After atomization, the liquid is dispersed in the gas in the form of small droplets. The gas-liquid carrying method changes from liquid film carrying method to droplet carrying method. The flow state of the gas-liquid two-phase fluid changes from vortex flow to mist flow. Mist flow can significantly reduce the slippage loss of liquid, thus making it more conducive to gas carrying liquid.
[0034] 3) The upper part of the atomizing nozzle has a first channel 3. Since the pressure inside the annulus is higher than the pressure inside the oil pipe 4, a small amount of gas will enter the oil pipe 4 from the annulus. It can partially use the force of the annulus to lift the fluid inside the oil pipe 4, further improving the liquid carrying effect of the gas inside the oil pipe 4.
[0035] Based on the vortex atomization liquid drainage and gas collection device provided in the above embodiments, this application also provides a method for liquid drainage and gas collection using the above-mentioned vortex atomization liquid drainage and gas collection device. Specifically, as follows Figure 4As shown, the vortex atomization liquid drainage and gas extraction method provided in this application embodiment includes the following implementation steps 102 to 114. It should be understood that a vortex atomization liquid drainage and gas extraction method may include all steps 102 to 114, or may only include some steps 102 to 114.
[0036] Step 102: Remove each section of tubing 4 from the target wellbore.
[0037] Step 104: Open a third through hole 7 on the target oil pipe 4, and at least one section of each oil pipe 4 is the target oil pipe 4.
[0038] Step 106: The vortex atomizing drainage and gas production device is placed into the target wellbore and fixedly connected to the pipe wall of the target tubing 4, and the first channel 3 is connected to the third through hole 7 on the target tubing 4.
[0039] Step 108: Lower tubing 4 into the target wellbore.
[0040] Step 110: Start gas extraction.
[0041] Step 112, the vortex forming unit 1 adjusts the incoming gas-liquid two-phase fluid into a vortex.
[0042] Step 114: The vortex enters the atomizing section 2, which atomizes the liquid in the vortex. The droplets generated after atomization are carried out of the target wellbore by the gas.
[0043] As described in the above embodiment, during gas production, the flow regime of the gas-liquid two-phase fluid is changed by utilizing a vortex atomization drainage gas production device, transforming the traditional liquid film carrying method into a droplet carrying method. Because the liquid slippage loss is significantly reduced, the gas-liquid carrying effect is improved. Simultaneously, the first channel 3 allows for partial lifting of the fluid within the tubing 4 using the force of the annulus, further enhancing the gas-liquid carrying effect. Therefore, without external energy input, the liquid accumulation in the wellbore is reduced solely by its own energy. It is evident that the drainage gas production method implemented in the above embodiment of this application balances low cost and high reliability.
[0044] However, in practical applications, the flow of gas-liquid two-phase fluids inside the wellbore is extremely complex. In a wellbore with accumulated liquid gas, if too few vortex atomizing drainage and gas production devices are installed, the atomized droplets will collide and re-aggregate into a liquid column during their ascent, resulting in a less than expected atomization effect. Conversely, if too many vortex atomizing drainage and gas production devices are installed, the pressure drop generated after the gas-liquid two-phase fluid passes through them will be too large, further hindering atomization. Therefore, the vortex atomizing drainage and gas production method based on vortex atomizing drainage and gas production devices provided in the above embodiments needs improvement.
[0045] As an improvement to the above embodiments, an improved embodiment of this application enhances the effectiveness of liquid drainage and gas collection by optimizing the number of vortex atomization liquid drainage and gas collection devices used. Specifically, as follows... Figure 5 As shown, the vortex atomization liquid drainage and gas sampling method provided in an improved embodiment of this application includes the following steps 202 to 216. It should be understood that a vortex atomization liquid drainage and gas sampling method may include all steps 202 to 216, or may include only some steps 202 to 216.
[0046] Step 202: Remove each section of tubing 4 from the target wellbore.
[0047] Step 204: Perform numerical simulation analysis on the gas extraction process after the vortex atomization drainage and gas extraction device is installed in the oil pipe 4. The installation interval of the vortex atomization drainage and gas extraction device corresponding to the optimal drainage and gas extraction effect in the numerical simulation analysis is taken as the first installation interval. The first installation interval is the interval between adjacent vortex atomization drainage and gas extraction devices after the vortex atomization drainage and gas extraction device is installed in the oil pipe 4, and the first installation interval is the interval between adjacent third through holes 7.
[0048] Step 206: Determine the target oil pipe 4 according to the first installation interval, and open a third through hole 7 on the target oil pipe 4.
[0049] Step 208: The vortex atomizing drainage and gas production device is placed into the target wellbore and fixedly connected to the pipe wall of the target tubing 4, and the first channel 3 is connected to the third through hole 7 on the target tubing 4.
[0050] Step 210: Lower tubing 4 into the target wellbore.
[0051] Step 212: Start the gas extraction operation.
[0052] Step 214: The vortex forming unit 1 adjusts the incoming gas-liquid two-phase fluid into a vortex.
[0053] Step 216: The vortex enters the atomizing section 2, which atomizes the liquid in the vortex. The droplets generated after atomization are carried out of the target wellbore by the gas.
[0054] As described in the above embodiments, this application optimizes the number of vortex atomization drainage and gas production devices by determining the first installation interval, thereby enabling the target wellbore after installing the vortex atomization drainage and gas production devices to achieve the optimal drainage and gas production effect.
[0055] The following is a specific application of the above embodiment in gas well A. Gas well A experienced liquid accumulation, which severely affected the normal production of the gas well. Therefore, it was decided to carry out a liquid drainage and gas production operation.
[0056] Because of severe fluid accumulation inside the wellbore of gas well A, the well's potential cannot be fully realized. Therefore, it is necessary to remove the original tubing from the wellbore and install a new tubing, such as... Figure 1 The vortex atomizing drainage and gas production device is shown. Then, the tubing 4, after the vortex atomizing drainage and gas production device is installed, is lowered back into the wellbore. When the gas-liquid two-phase fluid at the bottom of the well passes through the vortex atomizing drainage and gas production device, after passing through the vortex guide section, due to the higher density of water, it flows tightly against the inner wall of the vortex guide section, while the lower density of gas flows in the middle of the vortex guide section wall, forming a... Figure 2 The vortex flow pattern shown indicates that the gas carries the liquid mainly through the liquid film, resulting in significant slippage losses. Following this, the vortex passes through the atomizing nozzle, as... Figure 3 As shown, after the vortex passes through the atomizing nozzle, the flow velocity changes abruptly due to the sudden change in area, and the fluid is rapidly atomized. The liquid is uniformly dispersed in the gas in the form of small droplets. At this time, the liquid-carrying mode of the gas changes to droplet-carrying, significantly reducing slippage losses and greatly improving liquid-carrying capacity. In addition, the wellhead oil pressure of this well is 2MPa, and the casing pressure is 7MPa. The casing pressure is significantly higher than the tubing pressure. The first channel 3 at the top of the vortex atomizing fluid drainage and gas production device can partially utilize the higher casing pressure in the wellbore to lift the fluid in the tubing 4, which can further improve the flow effect of the fluid in the tubing 4.
[0057] Since gas well A has a depth of 3000m, in order to achieve better drainage and gas production effects, it is necessary to optimize the number of vortex atomization drainage and gas production devices used in this well. Through calculation and analysis, the results are as follows: Figure 6 As shown, the pressure drop caused by different usage intervals of the vortex atomizing drainage and gas production device was compared and analyzed. The pressure drop was highest when the usage interval was 10m. As the usage interval increased, the pressure drop gradually decreased, reaching its minimum at 30m. However, at 40m, the pressure drop increased further. This indicates that when too few vortex atomizing drainage and gas production devices are used, the atomized liquid will re-aggregate to form a liquid column, resulting in a large pressure drop and failing to achieve the desired effect. Conversely, when too many devices are used, the excessively dense arrangement will also produce a large pressure drop. Therefore, the optimal usage interval is 30m. Since the oil tubing used at gas well A is 10m long, installing one vortex atomizing drainage and gas production device for every three oil tubing sections 4 will yield the best results.
[0058] Gas well A began using a vortex atomization drainage and gas production device in October 2023, combined with, for example... Figure 7 The daily gas production record curve shown indicates that the daily gas production has significantly increased after using the vortex atomization liquid drainage gas collection device, from an average of less than 1×10⁻⁶ per day previously. 4 m 3 Increased to an average of 3 x 10 per day 4 m3 It is evident that the vortex atomization drainage and gas production device has achieved a good drainage and gas production effect, and the production of gas well A has been restored.
[0059] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0060] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0062] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A vortex atomizing liquid drainage and gas collection device, characterized in that, The device is used to install inside an oil pipe. The device has an atomizing section, which has a connecting pipe open at both ends and a spray pipe open at only one end. The first open end of the connecting pipe is connected to a tubular vortex forming section, and the second open end of the connecting pipe is connected to a first through hole opened on the closed end of the spray pipe. The connecting pipe gradually narrows from its first open end to its second open end. A second through hole is opened on the side wall of the spray pipe. The second through hole is connected to one end of a first channel, and the other end of the first channel is used to connect to a third through hole opened on the oil pipe. During gas extraction, the gas-liquid two-phase fluid enters from the end of the vortex forming section away from the first open end of the connecting pipe, and the gas-liquid two-phase fluid is sprayed out from the end of the spray pipe away from the second open end of the connecting pipe.
2. The vortex atomizing liquid drainage and gas collection device according to claim 1, characterized in that, The vortex forming section is equipped with a flow guiding structure.
3. The vortex atomizing liquid drainage and gas collection device according to claim 2, characterized in that, The flow guiding structure is a spiral structure.
4. The vortex atomizing liquid drainage and gas collection device according to claim 1, characterized in that, The vortex forming part is a non-variable diameter circular tube.
5. The vortex atomizing liquid drainage and gas collection device according to claim 1, characterized in that, The connecting pipe is a variable diameter circular pipe.
6. The vortex atomizing liquid drainage and gas collection device according to claim 4, characterized in that, The injection pipe is a non-variable diameter circular pipe.
7. The vortex atomizing liquid drainage and gas collection device according to claim 6, characterized in that, The radius of the vortex forming part is smaller than the radius of the jet pipe.
8. A method for vortex atomization liquid drainage and gas extraction, characterized in that, include: Remove each section of tubing from the target wellbore; A third through hole is made in the target oil pipe, and at least one section of the oil pipe is the target oil pipe; The vortex atomizing fluid drainage and gas production device is placed inside the target wellbore and fixedly connected to the wall of the target oil pipe, and the first channel of the vortex atomizing fluid drainage and gas production device is connected to the third through hole. Lower the tubing into the target wellbore; Initiate gas extraction operations; The vortex forming section adjusts the incoming gas-liquid two-phase fluid into a vortex; The vortex enters the atomizing section, which atomizes the liquid in the vortex. The droplets generated after atomization are carried out of the target wellbore by the gas.
9. The vortex atomization liquid drainage and gas extraction method according to claim 8, characterized in that, Also includes: The first installation interval is determined to achieve the optimal drainage and gas production effect. The first installation interval is the interval between adjacent vortex atomization drainage and gas production devices after the vortex atomization drainage and gas production device is installed on the oil pipe, and the first installation interval is the interval between adjacent third through holes. The target tubing is determined based on the first installation interval to trigger the opening of a third through hole in the target tubing.
10. The vortex atomization liquid drainage and gas extraction method according to claim 9, characterized in that, The determination of the first installation interval to achieve the optimal drainage and gas collection effect includes: Numerical simulation analysis was performed on the gas extraction process after the vortex atomization drainage gas extraction device was inserted into the oil pipe. The installation interval of the vortex atomization drainage and gas collection device corresponding to the optimal drainage and gas collection effect in the numerical simulation analysis is taken as the first installation interval.