Uranium mine stratum permeability increasing device

By using a controllable shock wave generator in the uranium stratum to expand tiny pores and create a new fracture network, the blockage problem of the uranium stratum was solved, the uranium mining efficiency and leaching rate were improved, and the cost was reduced.

CN223398661UActive Publication Date: 2025-09-30CHINA SHAANXI NUCLEAR IND GRP SHAANXI 210 RES INST CO LTD
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Patent Information

Application Number
CN202422969881.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-03
Publication Date
2025-09-30
Estimated Expiration
2034-12-03

AI Technical Summary

Technical Problem

During the mining process of uranium strata, the fluidity of in-situ leaching fluid is hindered due to blockage by fine particles and chemical precipitates, which reduces the extraction rate. The existing well washing and unblocking methods are inefficient and costly.

Method used

A controllable shock wave generator is used to release shock waves around pumping wells, injection wells or shock wave wells through hoisting equipment, expanding tiny pores and generating new fracture networks, removing blockages and restoring seepage channels.

Benefits of technology

It achieves efficient unblocking of uranium strata, improves mining efficiency, reduces costs, maintains a long time, does not affect normal production, and improves the leaching rate of uranium ore.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a uranium mine stratum permeability increasing device which comprises hoisting equipment arranged on the ground around a pumping well, an injection well or a shock wave well, a controllable shock wave generator is connected with the hoisting equipment through a cable, and the tail end of the cable is further connected with a controllable shock wave controller. The controllable shock wave generator is put into / taken out of the pumping well, the injection well or the shock wave well through the hoisting equipment; the shock wave well is formed by drilling a motor-pumped well beside a mine of the uranium mine, the depth of the shock wave well is 5-15 meters deeper than that of an injection well or a pumping well beside the shock wave well, and a communicated ground seam exists between the shock wave well and the injection well and / or the pumping well. According to the device, controllable shock wave operation can be carried out in one or a small quantity of shock wave wells to increase gaps and unblock a mining area, the wave range is 25-30 meters, and the maintenance time of one-time operation is at least more than half a year.
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Description

Technical Field

[0001] The utility model belongs to the technical field of uranium mining and relates to a uranium stratum permeability increasing device. Background Art

[0002] The current uranium mining process suffers from low leaching efficiency. One of the main reasons is that the cracks in the uranium strata are clogged by fine particles such as sand and rock dust, as well as chemical precipitates such as calcium, magnesium, and aluminum. This hinders the flow of the leaching solution, reducing the extraction rate. The current solution to this problem in in-situ uranium leaching is well flushing, but this only addresses filter clogs and is inefficient and costly, without being able to clear the uranium strata. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a uranium stratum permeability increasing device, which can realize the unblocking of uranium stratum at low cost and high efficiency without affecting uranium mining production.

[0004] The utility model is realized through the following technical solutions:

[0005] A uranium stratum permeability enhancement device includes a hoisting device installed on the ground around a pumping well, injection well, or shock wave well. A controllable shock wave generator is connected to the hoisting device via a cable, and the end of the cable is also connected to a controllable shock wave controller. The hoisting device lowers the controllable shock wave generator into or out of the pumping well, injection well, or shock wave well.

[0006] The shock wave well is a machine-driven well drilled beside the uranium mine. The depth of the shock wave well is 5 to 15 meters deeper than the injection well or pumping well beside it. There is a connectable ground fracture between the shock wave well and the injection well and / or pumping well.

[0007] The hoisting equipment comprises a winch, a ground pulley and an overhead pulley, and the cable is wound around the winch, the ground pulley and the overhead pulley in sequence; and the controllable shock wave controller is arranged beside the winch.

[0008] The hoist is powered by a 380V power supply; the controllable shock wave controller is powered by a 220V power supply;

[0009] The winch rotates and the controllable shock wave generator is lowered / raised through the cable.

[0010] The controllable shock wave generator is provided with 0.25 to 10 g of energetic material.

[0011] Furthermore, if the controllable shock wave generator is placed in / out of the pumping well or injection well, the controllable shock wave generator is provided with 0.25 to 2.5 g of energetic material; the shock wave generated by the controllable shock wave generator cannot expand the diameter of the filter or damage the filter screen;

[0012] If the controllable shock wave generator is put into / taken out of the shock wave well, 1 to 10 g of energetic material is arranged in the controllable shock wave generator.

[0013] The cable is provided with a plurality of controllable shock wave generators, which are lowered to placement points in the pumping well or injection well, with one controllable shock wave generator being provided at each placement point;

[0014] The placement points are respectively located in the middle and / or upper end and lower end of the filter in the well.

[0015] The cable is provided with a plurality of controllable shock wave generators, which are lowered into the shock wave well;

[0016] The controllable shock wave generator is placed at a depth in the shock wave well equal to the depth of the filter in the pumping well or injection well;

[0017] Alternatively, not more than 5 metres above / below that depth.

[0018] If there are more than three controllable shock wave generators on the cable, the controllable shock wave generators should be set 1 to 3 meters apart from each other;

[0019] If 1 to 3 controllable shock wave generators are provided on the cable, the controllable shock wave generators are arranged 2 to 3 meters apart from each other.

[0020] Compared with the prior art, the present invention has the following beneficial technical effects:

[0021] The uranium stratum permeability increasing device provided by the utility model is a hoisting device arranged around a pumping well, an injection well or a shock wave well. A controllable shock wave controller is hoisted in the well to release the shock wave. When the shock wave generated acts on the uranium stratum, the energy of the shock wave can expand the original tiny pores of the uranium stratum and may generate a new fracture network inside the uranium stratum, thereby achieving the effect of increasing the gap. In terms of unblocking, the shock wave can impact away the particles and blockages attached to the cracks in the uranium stratum, thereby unblocking the seepage channels of the reservoir, improving the seepage conditions of the in-situ leaching liquid, and helping to increase the mining efficiency of the uranium ore.

[0022] If a controlled shock wave operation is performed in an injection well or a pumping well to unblock the filter, the shock wave will impact, vibrate off, and peel off fine particles such as sand and rock powder attached to the filter net, as well as chemical precipitates such as calcium, magnesium, and aluminum, thereby restoring the filtering performance; one operation can be maintained for at least half a year; if a controlled shock wave operation is performed in a shock wave well, since another well is drilled next to the injection well and the pumping well, the controlled shock wave operation is performed in the shock wave well without affecting the normal operation of the injection well and the pumping well.

[0023] The utility model can carry out controllable shock wave operation in one or a small number of shock wave wells to increase the gap and remove blockage in a mining area. The wave covers a range of 25 to 30 meters, and the operation can be maintained for at least half a year. Compared with the existing well washing and unblocking, the utility model is simple to operate, takes less time for one operation, and can be maintained for a long time. It has the advantages of short operation time, high efficiency and low cost. Compared with chemical washing, it does not require soaking, has a short processing time, and does not affect the equipment in the well. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the present utility model.

[0025] Among them, 1 is the overhead pulley, 2 is the armored cable, 3 is the controllable shock wave, 4 is the shock wave well, 5 is the shock wave generating point, 6 is the ground pulley, 7 is the winch, 8 is the ground leaching liquid, 9 is the ground leaching liquid filter, 10 is gravel, 11 is the formation, 12 is the first physical blockage, 13 is the second physical blockage, 14 is the chemical blockage, and 15 is the well pumping filter. DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below with reference to the embodiments, which are intended to explain rather than limit the present invention.

[0027] like Figure 1 As shown, the utility model provides a uranium stratum permeability enhancement device, comprising a hoisting device arranged on the ground around a pumping well, an injection well, or a shock wave well. A controllable shock wave generator is connected to the hoisting device via a cable, and the end of the cable is also connected to a controllable shock wave controller. The hoisting device lowers the controllable shock wave generator into / out of the pumping well, the injection well, or the shock wave well.

[0028] The shock wave well is a machine-driven well drilled beside the uranium mine. The depth of the shock wave well is 5 to 15 meters deeper than the injection well or pumping well beside it. There is a connectable ground fracture between the shock wave well and the injection well and / or pumping well.

[0029] Furthermore, the hoisting equipment includes a winch, a ground pulley and an overhead pulley, and the cable is wound around the winch, the ground pulley and the overhead pulley in sequence; and the controllable shock wave controller is arranged beside the winch.

[0030] Specifically, the hoist is powered by a 380V power supply; the controllable shock wave controller is powered by a 220V power supply;

[0031] The winch rotates and the controllable shock wave generator is lowered / raised through the cable.

[0032] Furthermore, the controllable shock wave generator is provided with 0.25 to 10 g of energetic material.

[0033] Specifically, when the controllable shock wave generator is placed in / out of the pumping well or injection well, the controllable shock wave generator is provided with 0.25 to 2.5 grams of energetic material; the shock wave generated by the controllable shock wave generator cannot expand the diameter of the filter or damage the filter screen;

[0034] If the controllable shock wave generator is put into / taken out of the shock wave well, 1 to 10 g of energetic material is arranged in the controllable shock wave generator.

[0035] Furthermore, the cable is provided with a plurality of controllable shock wave generators, which are lowered to placement points in the pumping well or injection well, with one controllable shock wave generator being provided at each placement point;

[0036] The placement points are respectively located in the middle and / or upper end and lower end of the filter in the well.

[0037] Specifically, a plurality of controllable shock wave generators are provided on the cable, and the controllable shock wave generators are lowered into the shock wave well;

[0038] The controllable shock wave generator is placed at a depth in the shock wave well equal to the depth of the filter in the pumping well or injection well;

[0039] Alternatively, not more than 5 metres above / below that depth.

[0040] If there are more than three controllable shock wave generators on the cable, the controllable shock wave generators should be set 1 to 3 meters apart from each other;

[0041] If 1 to 3 controllable shock wave generators are provided on the cable, the controllable shock wave generators are arranged 2 to 3 meters apart from each other.

[0042] If a controllable shock wave generator is suspended and lowered into the air to the filter in a pumping well or an injection well, located in the middle and / or upper end or the lower end; and the controllable shock wave generator is started, the shock wave generated by it will peel off the attachments on the filter and restore the filtering performance; and as the shock wave propagates, it will unblock and increase the gap in the uranium mining area strata near the filters in the pumping well and the injection well.

[0043] If a controllable shock wave generator is suspended and lowered into a shock wave well, and the controllable shock wave generator is started, when the shock wave generated by the generator acts on the uranium reservoir, the energy of the shock wave expands the original tiny pores of the uranium reservoir, and the shock wave also impacts and dislodges particles and / or blockages attached to the cracks in the uranium rock formation, thereby unblocking the seepage channels of the reservoir, improving the seepage conditions, and unblocking the uranium formation.

[0044] and / or, when the generated shock wave acts on the uranium reservoir, it is possible that a new fracture network is generated within the uranium reservoir, thereby increasing the gaps or seepage channels in the uranium strata around the shock wave well;

[0045] After the shock wave operation is completed, the controllable shock wave generator is lifted out of the shock wave well.

[0046] The particulate matter includes fine particles including sand and rock powder attached to the cracks in the uranium strata (physical blockages); the blockages include chemical precipitates including calcium-containing chemical precipitates, magnesium-containing chemical precipitates, and aluminum-containing chemical precipitates (chemical blockages).

[0047] Specifically, the shock wave well can be realized by drilling a well by a machine; the specific location can be determined according to geological conditions and hydrological data, as long as there is a connectable ground fracture between the shock wave well and the injection well and / or the pumping well.

[0048] Specific examples are given below.

[0049] Example 1

[0050] A uranium stratum permeability enhancement device, the operation of which includes the following operations:

[0051] The pumping well and injection well are generally shaped like a plum blossom. A ground device is set between the pumping well and the injection well, including a winch 7, a ground pulley 6, and an overhead pulley 1. The armored cable 2 (7-core cable) is wound around the winch, the ground pulley, and the overhead pulley in sequence. The winch rotates to place or lift the controllable shock wave generator 5 (model YF-01) into the well.

[0052] Specifically, a controllable shock wave generator is provided with 1g of energetic material, and two controllable shock wave generators are installed on the armored cable 2;

[0053] Lower the controllable shock wave generator into the well (either pumping well or injection well) through the armored cable to the filter position, and adjust the position to the upper end and the lower end of the filter;

[0054] Press the start button on the surface, and the control signal is transmitted to the controllable shock wave generator underground through a 7-core cable. The 220V voltage is inverted into a high-voltage discharge, releasing plasma to directly drive the energetic material to produce a high-intensity shock wave, which vibrates away the fine particles attached to the filter screen. The shock wave also knocks away fine particles such as sand and rock dust, as well as chemical precipitates such as calcium, magnesium, and aluminum, which are clogged in the cracks of the uranium ore rock formation.

[0055] After the controlled shock wave operation, the device is lifted out of the wellbore and the well is completed.

[0056] Example 2

[0057] A uranium stratum permeability enhancement device, the operation of which includes the following operations:

[0058] The pumping well and injection well are in the shape of a plum blossom as a whole, and a well is drilled between the pumping well and the injection well as a shock wave well;

[0059] The specific well selection needs to be determined based on geological conditions and hydrological data. In order to better remove blockage and increase gaps, it is sufficient to have a connectable ground fracture between the shock wave well and the injection well and / or pumping well;

[0060] A ground device is set up, including a winch 7, a ground pulley 6, and an overhead pulley 1; an armored cable 2 (7-core cable) is wound around the winch, the ground pulley, and the overhead pulley in sequence; the winch rotates to place a controllable shock wave generator (model YF-01) in or out;

[0061] Specifically, a controllable shock wave generator is provided with 5 g of energetic material, and two controllable shock wave generators are installed on the armored cable 2;

[0062] Lower the controllable shock wave generator into the shock wave well through the armored cable, and adjust the position to correspond to the upper end and lower end of the filter at the pumping well position;

[0063] Press the start button on the surface, and the control signal is transmitted to the controllable shock wave generator underground through a 7-core cable. The 220V voltage is inverted into a high-voltage discharge, releasing plasma to directly drive the energetic material to generate a high-intensity shock wave.

[0064] The energy of the shock wave can expand the original tiny pores in the uranium reservoir and may create a new fracture network within the uranium reservoir, thereby achieving the effect of increasing the gap. In terms of unblocking, the shock wave can break away the particles and blockages attached to the cracks in the uranium rock formation, thereby unblocking the seepage channels in the reservoir, improving the seepage conditions of the uranium solution and helping to increase the efficiency of uranium mining.

[0065] After the controlled shock wave operation, the controllable shock wave generator is taken out.

[0066] The controllable shock wave operation involves a uranium reservoir with a range of 25 to 30 meters, and the interval between two operations is at least 6 months.

[0067] The utility model can operate for a long time and at any time to achieve sustained effects, can increase the benefits of the ore deposit, and improve the service life of the mine; controllable shock wave operations can be carried out in one well or a small number of wells to unblock and increase the gap in a mining area, effectively reducing costs and improving the uranium leaching rate. It has broad application prospects and is of great significance for my country's nuclear industry to increase the strategic uranium material reserves.

[0068] The above embodiments are preferred examples for implementing the present invention, and the present invention is not limited to the above embodiments. Any non-essential additions or substitutions made by those skilled in the art based on the technical features of the present invention fall within the scope of protection of the present invention.

Claims

1. A uranium stratum permeability enhancement device, characterized in that: The device comprises a hoisting device arranged on the ground around a pumping well, an injection well or a shock wave well, wherein a controllable shock wave generator is connected to the hoisting device via a cable, and an end of the cable is also connected to a controllable shock wave controller; the hoisting device places the controllable shock wave generator into / out of the pumping well, the injection well or the shock wave well; The shock wave well is a machine-driven well drilled beside the uranium mine as a shock wave well. The depth of the shock wave well is 5 to 15 meters deeper than the injection well or pumping well beside it. There is a connectable ground fracture between the shock wave well and the injection well and / or pumping well.

2. The uranium stratum permeability enhancement device according to claim 1, wherein: The hoisting equipment comprises a winch, a ground pulley and an overhead pulley, and the cable is wound around the winch, the ground pulley and the overhead pulley in sequence; and the controllable shock wave controller is arranged beside the winch.

3. The uranium stratum permeability enhancement device according to claim 2, wherein: The hoist is powered by a 380V power supply; the controllable shock wave controller is powered by a 220V power supply; The winch rotates and the controllable shock wave generator is lowered / raised through the cable.

4. The uranium stratum permeability enhancement device according to claim 1, wherein: The controllable shock wave generator is provided with 0.25-10g of energetic material.

5. The uranium stratum permeability enhancement device according to claim 4, characterized in that: If the controllable shock wave generator is put into / taken out of the pumping well or injection well, the controllable shock wave generator is provided with 0.25~2.5g of energetic material; the shock wave generated by it cannot expand the diameter of the filter screen or damage it; If the controllable shock wave generator is put into / taken out of the shock wave well, 1-10 g of energetic material is provided in the controllable shock wave generator.

6. The uranium stratum permeability enhancement device according to claim 5, wherein: The cable is provided with a plurality of controllable shock wave generators, which are lowered to placement points in the pumping well or injection well, with one controllable shock wave generator being provided at each placement point; The placement points are respectively located in the middle and / or upper end and lower end of the filter in the well.

7. The uranium stratum permeability enhancement device according to claim 5, characterized in that: The cable is provided with a plurality of controllable shock wave generators, which are lowered into the shock wave well; The controllable shock wave generator is placed at a depth in the shock wave well equal to the depth of the filter in the pumping well or injection well; Alternatively, not more than 5 metres above / below that depth.

8. The uranium stratum permeability enhancement device according to claim 5, wherein: If there are more than three controllable shock wave generators on the cable, the controllable shock wave generators should be set 1 to 3 meters apart from each other; If 1 to 3 controllable shock wave generators are provided on the cable, the controllable shock wave generators are arranged 2 to 3 meters apart from each other.