Air power unblocking and jet flow uranium mining method and integrated device

Abstract

The application discloses an air power blockage removal and jet flow uranium mining method and an integrated device, relates to the technical field of in-situ leaching uranium mining, and comprises a tubing, an air power jet flow pump installed on the tubing, a packer installed on the tubing, the packer being used for preventing power medium and uranium-containing liquid from channeling to a non-target layer, a sleeve arranged on the packer, a one-way valve installed on the tubing, a downhole air power sound wave jet flow blockage remover, an installed air cavity jet flow liquid on the tubing, which is used for adjusting mixed gas water into high-density bubbles to enter a producing layer, and for taking deep blockages in the producing layer to the ground, and simultaneously injecting air also plays the roles of expanding contact mixing of in-situ leaching agent and uranium ore, increasing energy of the producing layer, accelerating mining of high-concentration uranium blocked, and improving leaching rate. For in-situ leaching uranium mining mainly by injecting carbon dioxide and oxygen, the injected air also plays an auxiliary oxidation role, is beneficial to uranium production, and completes formation blockage removal.

Description

Technical Field

[0001] This invention relates to the field of in-situ leaching uranium mining engineering technology, specifically to an aerodynamic unblocking and jet uranium mining method and integrated device. Background Technology

[0002] With the accelerated development and utilization of nuclear energy, the existing in-situ leaching method for uranium mining involves injecting chemical fluids into injection wells and extracting uranium-containing fluids from uranium wells. Due to the dissolving, eroding, and scouring effects of the chemical fluids on the strata, blockages, scaling, and corrosion occur in the ore layer and uranium wells, leading to a decrease in uranium well production capacity or even shutdown.

[0003] The low-cost, rapid extraction mode of small-well-spacing uranium mining dictates that simplicity, practicality, speed, and efficiency are the core requirements and principles of extraction. Currently, most uranium well extraction methods rely on submersible centrifugal pumps. However, due to formation sand production, pump scaling and corrosion, and malfunctions of downhole submersible pumps and cables, the failure rate of the extraction system is high. Resolving these issues requires specialized well workover operations, such as using a workover rig to remove the tubing for inspection, repair, and treatment of the wellbore. This process is time-consuming, costly, and increases production costs. Furthermore, there is a lack of effective and suitable unblocking methods and equipment for uranium wells where the near-wellbore formation and bottom are blocked by sand and mud deposits and scaling. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an aerodynamic unblocking and jet uranium extraction method and integrated device, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an integrated aerodynamic unblocking and jet uranium extraction device, comprising: oil pipe; An air-powered jet pump installed on the oil pipe; A packer installed on the tubing is used to prevent the dynamic medium and uranium-containing liquid from flowing into the non-target layer; A sleeve disposed on the packer; A check valve installed on the oil pipe; A downhole pneumatic acoustic jet unblocking device is installed on the tubing and is used to introduce cavitation jet fluid, which is made of mixed gas and water into high-density bubbles, into the production formation. The pneumatic jet uranium extraction pump component is installed on the oil pipe and is used to stably achieve efficient pumping, gas-liquid mixing and atomization, and pressurization and return of uranium-containing liquid from the formation.

[0006] The downhole pneumatic acoustic jet unblocking device includes a central screen pipe installed on the tubing, an upper locking nut installed on the central screen pipe, a pneumatic acoustic generator assembly installed on the central screen pipe, and a lower locking nut installed on the central screen pipe. The upper locking nut and the lower locking nut are used to fix the pneumatic acoustic generator assembly. The central screen tube is used to filter large particulate impurities. The central screen tube has sieve holes. Under the action of expansion energy, the loosened blockage in the formation and the uranium-containing liquid are discharged back to the surface along the annulus of the oil casing under negative pressure. This has a rapid and large-radius negative pressure discharge and unblocking effect on the producing formation, bringing the deep blockage in the producing formation to the surface. At the same time, the injection of air also has the effect of expanding the contact and mixing between the in-situ leaching agent and the uranium ore, enhancing the energy of the producing formation, accelerating the extraction of the high-concentration uranium that is blocked, and improving the leaching rate. For in-situ leaching of uranium, which mainly uses carbon dioxide and oxygen, the injection of air also has an auxiliary oxidation effect, which is conducive to the production of uranium and completes the unblocking of the formation.

[0007] The pneumatic acoustic wave generator assembly includes a spacer ring mounted on the central sieve tube, an oscillating diaphragm mounted on the spacer ring, and a pin mounted on the spacer ring. The spacer ring has a gas channel. The pins are used to connect multiple oscillating diaphragms in series and fix them circumferentially to prevent the diaphragms from shifting and falling off due to the impact of high-pressure gas. The gas channel provides a flow path for the power gas. Under the oscillation of the oscillating diaphragms, the cavitation jet liquid is modulated into high-density bubbles. After the cavitation jet liquid enters the target formation, in addition to generating acoustic oscillation and the impact and shearing effect of high-speed jet, the bursting of bubbles will produce micro-explosion and micro-jet effects, which can deeply peel off stubborn scale and dense sandy mud blockages. At the same time, the mixed gas and water can homogenize the formation fluid and promote the chemical reaction between the leaching agent and uranium ore, further improving the unblocking quality and uranium ore leaching rate.

[0008] The pneumatic jet uranium extraction pump component includes a pump barrel assembly mounted on the oil pipe, a cylindrical pump core mounted on the pump barrel assembly, and a valve ball disposed inside the cylindrical pump core. The pump barrel assembly has an acceleration ring cavity, a pneumatic atomizing ring cavity, and a deceleration and pressure boosting cavity sequentially inside. A formation fluid intake port is provided on one side wall of the pump barrel assembly corresponding to the acceleration ring cavity. An atomizing liquid outlet and an atomizing gas-liquid outlet are provided on the pump barrel assembly.

[0009] The pneumatic jet uranium extraction pump component also includes a second pump barrel installed on the oil pipe. The second pump barrel has an acceleration injection section, a cylindrical atomization section, and a deceleration and pressurization section sequentially opened inside. The side wall of the second pump barrel has a liquid inlet corresponding to the acceleration injection section, and the end of the second pump barrel has an atomized gas-liquid outlet corresponding to the deceleration and pressurization section. The second pump core is movably disposed inside the second pump barrel, the second valve ball is disposed inside the second pump barrel, and the cup is fitted on the second pump core.

[0010] The deceleration and boosting chamber is an expanded-diameter chamber, and the air outlet of the deceleration and boosting chamber is connected to the atomized liquid outlet. Compressed air is used as the power medium, which fundamentally avoids the high failure rate problem caused by motor and cable failures and sand and scale buildup in traditional submersible centrifugal electric pumps. At the same time, it is equipped with two types of uranium production pump structures, namely ring spray and column spray, which are suitable for shallow uranium wells with low sand content and high sand production, respectively. It has excellent corrosion resistance, anti-clogging and wear resistance, and the equipment has high reliability and long service life in downhole operation.

[0011] The deceleration and pressurization section is a straight-through, expanded-diameter cylindrical cavity. The deceleration and pressurization section is connected to the cylindrical atomization section, and the atomized gas-liquid outlet is connected to the deceleration and pressurization section.

[0012] The atomized gas-liquid outlet is connected to the oil pipe, and the sleeve is connected to the atomized gas-liquid outlet.

[0013] The aerodynamic unblocking and jet uranium extraction method includes the following steps: Step 1: Running the tubing string. The integrated tubing string equipped with the downhole pneumatic acoustic jet unblocking device and the pneumatic jet uranium production pump is run into the uranium production well. The non-producing section is sealed off by the packer, so that the tubing, downhole pneumatic acoustic jet unblocking device, and pneumatic jet uranium production pump are connected to the target producing layer. Step Two: Unblocking Operation. High-pressure dynamic medium is injected into the tubing. The dynamic medium flows into the gas channel through the screen holes of the central screen tube, impacting the oscillating diaphragm to generate sound waves. The sound waves, along with the dynamic medium jet, enter the target production formation, impacting, oscillating, shearing, and loosening the blockage. At the same time, the dynamic medium replenishes energy to the formation. After reaching the set injection volume, the well is shut in to equalize the pressure. After shutting in, the well is opened to release the flow. The high-pressure dynamic medium expands and does work, expelling the blockage in the formation along with the uranium-containing fluid back to the surface through the annulus of the casing and tubing. Step 3: The appropriate pump core is dropped into the oil pipe. The pump core is set inside the pump barrel. High-pressure air is injected into the oil pipe. The air forms a high-speed jet through the acceleration channel, which generates negative pressure to draw in uranium-containing liquid from the formation. The uranium-containing liquid and air are mixed in the atomization channel to form a gas-mist two-phase medium. After being pressurized by the pressurization channel, it is discharged back to the ground along the annulus of the oil casing. The uranium-containing liquid is obtained through gas-liquid separation. Step 4: During uranium mining, the pumping rate can be adjusted by replacing pump core 2 with different outer diameter specifications to adapt to changes in the production of uranium-bearing liquid in the formation. Pump core 2 can be removed in time, and the unblocking steps can be repeated to restore formation permeability. Pump core 2 can be retrieved and replaced simultaneously without removing the entire tubing string, thus reducing maintenance costs.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention allows for convenient conversion between air-supported acoustic oscillation unblocking and air jet drainage without requiring further movement of the production tubing. It features a large unblocking radius, strong negative pressure backflow effect, convenient adjustment of production parameters, simplified construction procedures, and significantly reduced construction costs. It also greatly simplifies the in-situ leaching uranium mining process, reducing tubing operation and equipment investment costs. Furthermore, the integrated tubing allows for a single cyclic operation, significantly improving downhole efficiency. Under the influence of expansion energy, the loosened blockages in the formation, along with the uranium-containing fluid, are backflowed to the surface via the annulus of the casing and casing under negative pressure. This provides rapid, large-radius negative pressure backflow unblocking of the producing formation, bringing deep blockages to the surface. Simultaneously, air injection expands the contact and mixing of the leaching agent and uranium ore, enhances the energy of the producing formation, accelerates the extraction of high-concentration uranium that has been blocked, and increases the leaching rate. For in-situ leaching uranium mining primarily using carbon dioxide and oxygen injection, air injection also plays an auxiliary oxidation role, which is beneficial for uranium production and completes formation unblocking.

[0015] 2. In this invention, the pneumatically driven unblocking device and jet pump have a simple structure with no relatively moving parts. They are corrosion-resistant, wear-resistant, scale-inhibiting, and anti-clogging, and have high reliability. The pneumatic medium is pollution-free, readily available, and helps improve the efficiency of uranium mining and leaching rate through in-situ leaching chemical reaction. The injected unblocking air and mixed air water have the effect of assisting diffusion and migration of the injected uranium leaching liquid, expanding the leaching range in areas that are difficult for leaching chemicals to reach, which is beneficial to improving the leaching rate and leaching volume of uranium ore. Under the oscillation action of the oscillating diaphragm, the cavitation jet liquid is modulated into high-density bubbles. After the cavitation jet liquid enters the target producing layer, in addition to generating acoustic oscillation and high-speed jet impact shearing action, the bubble bursting will produce micro-explosion and micro-jet effects, which can deeply peel off stubborn scale and dense sandy mud blockages. At the same time, the mixed air water can homogenize the formation fluid and promote the chemical reaction between the in-situ leaching agent and uranium ore, further improving the unblocking quality and uranium ore leaching rate.

[0016] 3. In this invention, compressed air is used as the power medium, which fundamentally avoids the high failure rate problem caused by motor and cable failures and sand and scale buildup in traditional submersible centrifugal electric pumps. At the same time, it is equipped with two types of uranium production pump structures, namely ring jet and column jet, which are suitable for shallow uranium wells with low sand content and high sand production, respectively. It has excellent corrosion resistance, anti-clogging and wear resistance, and the equipment has high reliability and long service life in downhole operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the integrated tubular structure for pneumatic acoustic jet unblocking and uranium extraction according to the present invention; Figure 2 This is a schematic diagram of the pneumatic ring jet uranium extraction pump structure of the present invention; Figure 3 This is a schematic diagram of the downhole pneumatic acoustic jet unblocking device of the present invention; Figure 4 This is a schematic cross-sectional view of the pneumatic acoustic wave generator assembly of the present invention; Figure 5 This is a schematic diagram of the pneumatic column jet flow uranium extraction pump structure of the present invention.

[0018] The meanings of the labels in the diagram are as follows: 1. Tubing; 2. Casing; 3. Pneumatic jet pump; 4. Packer; 5. Downhole pneumatic acoustic jet unblocker; 6. Check valve; 7. Accelerating annular cavity; 8. Formation fluid intake port; 9. Pneumatic atomizing annular cavity; 10. Cylindrical pump core one; 11. Deceleration and pressurization chamber; 12. Pump barrel assembly one; 13. Atomized liquid outlet; 14. Valve ball one; 15. Center screen tube; 16. Upper lock nut; 17. Pneumatic acoustic generator assembly; 18. Lower lock nut; 19. Pin; 20. Spacer ring; 21. Oscillating diaphragm; 22. Gas passage; 23. Pump core two; 24. Leather cup; 25. Accelerating injection section; 26. Pump barrel two; 27. Columnar atomizing section; 28. Deceleration and pressurization section; 29. ​​Atomized gas-liquid outlet; 30. Valve ball two. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: Please see Figures 1-5 One embodiment of the present invention is: an integrated device for pneumatic unblocking and jet uranium extraction, including a tubing 1, a pneumatic jet pump 3 installed on the tubing 1, a packer 4 installed on the tubing 1, the packer 4 being used to prevent the dynamic medium and uranium-containing liquid from flowing into non-target layers, a casing 2 installed on the packer 4, a check valve 6 installed on the tubing 1, and a downhole pneumatic acoustic jet unblocking device 5 installed on the tubing 1, used to introduce cavitation jet liquid, which is mixed with gas and water and converted into high-density bubbles, into the producing layer; The pneumatic jet uranium extraction pump component is installed on the oil pipe 1 and is used to stably achieve efficient extraction, gas-liquid mixing and atomization, and pressurization and return of uranium-containing liquid from the formation.

[0021] The downhole pneumatic acoustic jet unblocking device 5 includes a central screen pipe 15 installed on the tubing 1, an upper locking nut 16 installed on the central screen pipe 15, a pneumatic acoustic generator assembly 17 installed on the central screen pipe 15, and a lower locking nut 18 installed on the central screen pipe 15. The upper locking nut 16 and the lower locking nut 18 are used to fix the pneumatic acoustic generator assembly 17. The central screen tube 15 is used to filter large particulate impurities, and the central screen tube 15 has sieve holes.

[0022] In this embodiment, after the device is positioned downhole, the operator confirms that the packer 4 is tightly sealed. Then, the cylindrical pump core 10 inside the pneumatic jet pump 3 is pulled out to ensure that the medium channel from the tubing 1 to the target production layer is completely unobstructed, preparing to inject power gas. During the unblocking operation, the power gas is injected into the tubing 1. When the gas flows through the tubing 1 and passes through the downhole pneumatic acoustic jet unblocker 5, it is evenly distributed through the sieve holes on the side wall of the central screen tube 15 to the gas channel 22 of the pneumatic acoustic generator assembly 17. The high-speed air impacts the oscillating diaphragm 21, causing it to generate high-frequency mechanical oscillation, forming continuous oscillating sound waves. The sound waves enter the target production layer along with the high-speed air jet, impacting, oscillating, and shearing the sand and mud deposits, slight scaling, and other blockages in the near-wellbore formation, causing the blockages to loosen and peel off from the formation matrix. At the same time, the high-pressure air replenishes the formation with energy and increases the formation pressure.

[0023] The pneumatic jet uranium extraction pump components include a pump barrel assembly 12 mounted on the oil pipe 1, a cylindrical pump core 10 mounted on the pump barrel assembly 12, and a valve ball 14 disposed inside the cylindrical pump core 10. The pump barrel assembly 12 has an acceleration ring cavity 7, a pneumatic atomizing ring cavity 9, and a deceleration and pressure boosting cavity 11 sequentially opened inside. A formation fluid suction port 8 is opened on the side wall of the pump barrel assembly 12 corresponding to the position of the acceleration ring cavity 7. The uranium-containing liquid in the formation is drawn into the pump body through the formation fluid suction port 8 and flows into the pneumatic atomizing ring cavity 9 together with high-speed air. The pump barrel assembly 12 has an atomized liquid outlet 13 and an atomized gas-liquid outlet 29.

[0024] Once the high-pressure compressed air injection volume reaches the set value, close the air injection gate valve on the outside of tubing 1 and allow the well to be sealed and pressure equalized for four to six hours. This allows the high-pressure air to fully diffuse into the depths of the producing formation, ensuring thorough contact with the blockages and uranium-bearing fluid within the formation. After sealing, slowly open the gate valve on the outside of casing 2 to release the air. Under the influence of expansion energy, the high-pressure air carries the loosened blockages and uranium-bearing fluid back to the surface along the annulus of casing 2. This provides a rapid, large-radius negative pressure backflow to unblock the producing formation, bringing the deep blockages to the surface. Simultaneously, the injected air also expands the contact and mixing between the leaching agent and the uranium ore, enhances the formation's energy, accelerates the extraction of the blocked high-concentration uranium, and improves the leaching rate. For in-situ leaching of uranium, which primarily uses carbon dioxide and oxygen, the injected air also acts as an auxiliary oxidation agent, which is beneficial for uranium production. After unblocking the formation and releasing the air, confirm that the formation pressure is stable. A cylindrical pump core 10, compatible with the pneumatic jet pump 3, is inserted into the oil pipe 1. The pump core falls along the oil pipe 1 and is precisely seated inside the pump assembly 12. High-pressure compressed air is injected into the oil pipe 1 again. After the high-pressure air enters the acceleration annular cavity 7 of the pump assembly 12, it forms a high-speed jet due to the contraction of the cavity. A strong negative pressure is generated around the jet. Under the action of the negative pressure, the uranium-containing liquid in the formation is drawn into the pump body through the formation liquid suction port 8. It flows into the pneumatic atomizing annular cavity 9 together with the high-speed air. After being fully mixed, it forms a low-density two-phase medium in the form of air as the continuous phase and uranium-containing liquid as the dispersed phase. After flowing into the deceleration and pressurization cavity 11, the two-phase medium is decelerated and pressurized to form a low-speed, high-pressure transportable medium. Finally, it is discharged through the atomized liquid outlet 13 and stably returned to the ground along the annulus of the oil casing 2. The ground uses a gas-liquid separation device to separate the returned gas-liquid mixture, collect the uranium-containing liquid, and complete the uranium mining operation.

[0025] During uranium mining, if it is necessary to adjust the uranium production rate, the cylindrical pump core-10 downhole can be retrieved using surface retrieval equipment. A cylindrical pump core-10 with a different outer diameter can then be reinserted into the pump assembly-12 to adjust the pumping rate without modifying the pump body or tubing structure. If the formation pressure drops or the near-well formation becomes blocked again, causing a decrease in production capacity, simply retrieve the cylindrical pump core-10 again and repeat the above steps. This will enable the cyclical operation of unblocking uranium mining and ensure stable production of uranium wells.

[0026] Example 2: Please see Figures 1-5 Based on the above embodiments, in another embodiment of the present invention, the pneumatic acoustic wave generator assembly 17 includes a spacer ring 20 mounted on the central screen tube 15, an oscillating diaphragm 21 mounted on the spacer ring 20, and a pin 19 mounted on the spacer ring 20. The spacer ring 20 is provided with a gas channel 22, and high-speed air impacts the oscillating diaphragm 21 to generate high-frequency mechanical oscillation. Among them, pin 19 is used to connect multiple oscillating diaphragms 21 in series and fix them circumferentially to prevent the diaphragms from shifting and falling off due to the impact of high-pressure gas. Gas channel 22 is used to provide a flow path for power gas. High-speed air and sand-containing uranium-containing liquid flow into the columnar atomization section 27 together.

[0027] In this embodiment, during unblocking operations, the power medium is changed from pure compressed air to mixed air and water. The cavitation jet fluid formed by the mixed air and water enhances the unblocking effect. High-pressure mixed air and water is injected into the well through tubing 1. When the mixed air and water flows through the downhole pneumatic acoustic jet unblocking device 5, it is diverted to the gas channel 22 through the central screen tube 15. Under the oscillation action of the oscillating diaphragm 21, it is modulated into a high-density bubble cavitation jet fluid. After the cavitation jet fluid enters the target production layer, in addition to generating acoustic oscillation and high-speed jet impact shearing action, the bubble bursting will produce micro-explosion and micro-jet effects, which deeply strip away stubborn scale and dense sandy mud blockages. At the same time, the mixed air and water can homogenize the formation fluid and promote the chemical reaction between the leaching agent and uranium ore, further improving the unblocking quality and uranium ore leaching rate. After the mixed air and water injection volume reaches the set value, the well is shut down to equalize the pressure, so that the cavitation jet fluid can fully act on the formation blockage. Then the well is opened and the blockage is discharged back to the surface along with the uranium-containing fluid.

[0028] Example 3: Please see Figures 1-5 Based on the above embodiments, in another embodiment of the present invention, the pneumatic jet uranium extraction pump component further includes a second pump barrel 26 installed on the oil pipe 1. The second pump barrel 26 has an accelerating injection section 25, a cylindrical atomizing section 27, and a deceleration and pressure boosting section 28 sequentially opened inside. A liquid inlet is opened on the side wall of the second pump barrel 26 corresponding to the position of the accelerating injection section 25. An atomized gas-liquid outlet 29 is opened at the end of the second pump barrel 26 corresponding to the position of the deceleration and pressure boosting section 28. The second pump core 23 is movably disposed inside the second pump barrel 26. The second valve ball 20 is disposed inside the second pump barrel 26. A squeegee 24 is fitted on the second pump core 23. The squeegee 24 on the outside of the second pump core 23 is tightly fitted to the inner wall of the second pump barrel 26 to prevent high-pressure air leakage.

[0029] The deceleration and pressure boosting chamber 11 is an expanded diameter chamber, and the air outlet of the deceleration and pressure boosting chamber 11 is connected to the atomizing liquid outlet 13.

[0030] The deceleration and pressurization section 28 is a straight-through, expanded-diameter cylindrical cavity. The deceleration and pressurization section 28 is connected to the cylindrical atomization section 27. High-speed air and sand-containing and uranium-containing liquid flow into the cylindrical atomization section 27 together. The atomized gas-liquid outlet 29 is connected to the deceleration and pressurization section 28. The atomized gas-liquid outlet 29 is connected to the oil pipe 1. The casing 2 is connected to the atomized gas-liquid outlet 29.

[0031] In this embodiment, during operation: when switching the injection structure is required, pump core 23 inside the pneumatic column jet uranium production pump is retrieved to ensure unobstructed media channels. High-pressure compressed air is used to unblock the formation and remove near-wellbore blockages, clearing the channel for subsequent uranium production operations. Subsequently, pump core 23, compatible with the pneumatic column jet uranium production pump, is inserted into tubing 1. The outer cup 24 of pump core 23 fits tightly against the inner wall of pump barrel 26 to prevent high-pressure air leakage. High-pressure compressed air is injected into tubing 1. After entering the acceleration injection section 25 of pump barrel 26, the high-pressure air forms a high-speed columnar jet through a straight-through constricting columnar cavity, generating strong negative pressure. The sand-bearing and uranium-bearing formations are then subjected to this jet. The liquid is drawn into the pump body through the pump inlet. The valve ball 2 30 at the inlet enables one-way flow to prevent backflow of uranium-containing liquid and accumulation of sand particles. High-speed air and sand-containing uranium-containing liquid flow together into the columnar atomization section 27. They are fully mixed and atomized in the straight-through equal-diameter columnar cavity to form a gas-mist two-phase medium. The cavity has no complex gaps, which effectively avoids sand particle deposition and blockage. After flowing into the deceleration and pressurization section 28, the two-phase medium is decelerated and pressurized to form a low-speed high-pressure medium with sufficient upward force. Finally, it is discharged through the atomized gas-liquid outlet 29 and returned to the surface along the annulus of the oil casing 2. After gas-liquid separation and sand removal treatment, the uranium-containing liquid is collected at the surface, completing the uranium mining operation of the high sand-containing uranium well.

[0032] During uranium mining, the pumping rate can be adjusted by replacing pump core 23 with different outer diameter specifications to adapt to changes in the production of uranium-bearing liquid in the formation. Due to the high sand production in the formation, when slight blockage occurs in the formation and the production rate decreases, pump core 23 can be removed in time, and the unblocking steps can be repeated to restore the formation permeability. The diaphragm cup 24 of the pump body is a vulnerable part and can be replaced simultaneously by dropping pump core 23, without having to remove the entire tubing string, thus reducing maintenance costs.

[0033] Example 4: Based on Examples 1, 2, and 3, the aerodynamic unblocking and jet uranium extraction method provided in this example includes the following steps: Step 1: Run the tubing string. The integrated tubing string equipped with the downhole pneumatic acoustic jet unblocker and the pneumatic jet uranium production pump is run into the uranium production well. The non-producing section is sealed off by the packer 4, so that the tubing 1, the downhole pneumatic acoustic jet unblocker, and the pneumatic jet uranium production pump are connected to the target producing layer. Step 2: Unblocking operation. High-pressure dynamic medium is injected into tubing 1. The dynamic medium flows into gas channel 22 through the mesh of central screen pipe 15, impacting and oscillating diaphragm 21 to generate sound waves. The sound waves, along with the dynamic medium jet, enter the target production layer, impacting, oscillating, shearing, and loosening the blockage. At the same time, the dynamic medium replenishes energy to the formation. After reaching the set injection volume, the well is shut in and pressure is equalized. After shutting in, the well is opened and the flow is released. The high-pressure dynamic medium expands and does work, expelling the blockage in the formation along with the uranium-containing fluid back to the surface through the annulus of the casing and tubing. Step 3: Drop a suitable pump core into oil pipe 1. The pump core is set inside the pump barrel. High-pressure air is injected into oil pipe 1. The air forms a high-speed jet through the acceleration channel, which generates negative pressure to draw uranium-containing liquid from the formation. The uranium-containing liquid and air mix in the atomization channel to form a gas-mist two-phase medium. After being pressurized by the pressurization channel, it is discharged back to the ground along the annulus of the oil casing. The uranium-containing liquid is obtained through gas-liquid separation. Step 4: During uranium mining, the pumping rate can be adjusted by replacing pump core 23 with different outer diameter specifications to adapt to changes in the production of uranium-bearing liquid in the formation. Pump core 23 can be removed in time, and the unblocking steps can be repeated to restore formation permeability. Pump core 23 can be retrieved and replaced simultaneously without removing the entire tubing string, thus reducing maintenance costs.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated device for aerodynamic unblocking and jet uranium extraction, characterized in that, include: Oil pipe (1); An air-powered jet pump (3) is installed on the oil pipe (1). A packer (4) is installed on the oil pipe (1) to prevent the dynamic medium and uranium-containing liquid from flowing into the non-target layer; The sleeve (2) is installed on the packer (4); A check valve (6) is installed on the oil pipe (1); The downhole pneumatic acoustic jet unblocking device (5) is installed on the tubing (1) and is used to mix gas and water to form a cavitation jet liquid with high-density bubbles and enter the production layer. The pneumatic jet uranium extraction pump component is installed on the oil pipe (1) and is used to stably realize the efficient extraction, gas-liquid mixing and atomization and pressurization backflow of uranium-containing liquid in the formation.

2. The integrated aerodynamic unblocking and jet uranium extraction device according to claim 1, characterized in that: The downhole pneumatic acoustic jet unblocking device (5) includes a central screen pipe (15) installed on the tubing (1), an upper locking nut (16) installed on the central screen pipe (15), a pneumatic acoustic generator assembly (17) installed on the central screen pipe (15), and a lower locking nut (18) installed on the central screen pipe (15). The upper locking nut (16) and the lower locking nut (18) are used to fix the pneumatic acoustic generator assembly (17). The central sieve tube (15) is used to filter large particulate impurities, and the central sieve tube (15) has sieve holes.

3. The integrated aerodynamic unblocking and jet uranium extraction device according to claim 2, characterized in that: The pneumatic acoustic wave generator assembly (17) includes a spacer (20) mounted on the central screen tube (15), an oscillating diaphragm (21) mounted on the spacer (20), and a pin (19) mounted on the spacer (20). A gas passage (22) is provided on the spacer (20). The pin (19) is used to connect multiple oscillating diaphragms (21) in series and fix them circumferentially to prevent the diaphragms from shifting and falling off due to the impact of high-pressure gas. The gas channel (22) is used to provide a flow path for the power gas.

4. The integrated aerodynamic unblocking and jet uranium extraction device according to claim 3, characterized in that: The pneumatic jet uranium extraction pump component includes a pump barrel assembly (12) installed on the oil pipe (1), a cylindrical pump core (10) installed on the pump barrel assembly (12), and a valve ball (14) disposed inside the cylindrical pump core (10). The pump barrel assembly (12) is provided with an acceleration ring cavity (7), a pneumatic atomizing ring cavity (9), and a deceleration and pressure boosting cavity (11) in sequence. The side wall of the pump barrel assembly (12) is provided with a formation fluid intake port (8) corresponding to the position of the acceleration ring cavity (7). The pump barrel assembly (12) is provided with an atomizing liquid outlet (13) and an atomizing gas-liquid outlet (29).

5. The integrated aerodynamic unblocking and jet uranium extraction device according to claim 4, characterized in that: The pneumatic jet uranium extraction pump component also includes a second pump barrel (26) installed on the oil pipe (1). The second pump barrel (26) has an acceleration jet section (25), a cylindrical atomization section (27), and a deceleration and pressure increase section (28) sequentially opened inside. The side wall of the second pump barrel (26) has a liquid inlet corresponding to the position of the acceleration jet section (25). The end of the second pump barrel (26) has an atomized gas-liquid outlet (29) corresponding to the position of the deceleration and pressure increase section (28). The second pump core (23) is movably arranged inside the second pump barrel (26). The second valve ball (30) is arranged inside the second pump barrel (26). The cup (24) is fitted on the second pump core (23).

6. The integrated aerodynamic unblocking and jet uranium extraction device according to claim 5, characterized in that: The deceleration and pressure boosting chamber (11) is an expanded diameter chamber, and the air outlet of the deceleration and pressure boosting chamber (11) is connected to the atomizing liquid outlet (13).

7. The integrated aerodynamic unblocking and jet uranium extraction device according to claim 6, characterized in that: The deceleration and pressure boosting section (28) is a straight-through expanded diameter cylindrical cavity. The deceleration and pressure boosting section (28) is connected to the cylindrical atomizing section (27), and the atomized gas-liquid outlet (29) is connected to the deceleration and pressure boosting section (28).

8. The integrated aerodynamic unblocking and jet uranium extraction device according to claim 7, characterized in that: The atomizing gas-liquid outlet (29) is connected to the oil pipe (1), and the sleeve (2) is connected to the atomizing gas-liquid outlet (29).

9. An aerodynamic unblocking and jet uranium extraction method, characterized in that, The integrated aerodynamic unblocking and jet uranium extraction device according to any one of claims 1-9 includes the following steps: Step 1: Run the tubing string. The integrated tubing string equipped with the downhole pneumatic acoustic jet unblocker and the pneumatic jet uranium pump is run into the uranium well. The non-producing section is sealed by the packer (4) so ​​that the tubing (1), the downhole pneumatic acoustic jet unblocker, and the pneumatic jet uranium pump are connected to the target producing layer. Step 2: Unblocking operation. High-pressure dynamic medium is injected into the tubing (1). The dynamic medium flows into the gas channel (22) through the screen holes of the central screen pipe (15). It impacts the oscillating diaphragm (21) to generate sound waves. The sound waves accompany the dynamic medium jet into the target production layer, impacting, oscillating, shearing and loosening the blockage. At the same time, the dynamic medium replenishes energy to the formation. After reaching the set injection volume, the well is shut in and simmered to equalize the pressure. After simmering, the well is opened and the flow is released. The high-pressure dynamic medium expands and does work, returning the blockage in the formation and the uranium-containing fluid to the surface along the annulus of the casing. Step 3: Drop a suitable pump core into the oil pipe (1). The pump core is set in the pump barrel. High-pressure air is injected into the oil pipe (1). The air forms a high-speed jet through the acceleration channel, which generates negative pressure to draw uranium-containing liquid from the formation. The uranium-containing liquid and air are mixed in the atomization channel to form a gas-mist two-phase medium. After being pressurized by the pressurization channel, it is discharged back to the ground along the annulus of the oil casing. The uranium-containing liquid is obtained through gas-liquid separation. Step 4: During the uranium mining process, the pumping volume can be adjusted by replacing the pump core 2 (23) with different outer diameter specifications to adapt to the changes in the production of uranium-containing liquid in the formation. Pump core 2 (23) can be removed in time, and the unblocking steps can be repeated to restore the formation permeability. Pump core 2 (23) can be retrieved and replaced simultaneously without having to remove the entire tubing string, thus reducing maintenance costs.

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