Salt lake shallow layer horizontal brine mining well and well drilling method
Through the shallow horizontal brine well mining and drilling method of salt lake, crane and drilling rig systems are used to directly extract pressure brine bypassing surface obstacles, solving the maintenance problems of traditional vertical shafts under environmental factors, and achieving efficient brine extraction and The well body is reinforced, which significantly increases the total water output and extraction life.
Patent Information
- Application Number
- CN202411104555.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-01-10
AI Technical Summary
The stable brine extraction of traditional vertical shafts requires mining without surface interference, but it is difficult to maintain due to environmental factors. Especially in inland areas, the surface water accumulation problem caused by climate change and flooding is difficult to effectively extract salt lake brine through conventional methods. .
The shallow horizontal brine well and drilling method of salt lake are adopted. Through cranes and drilling rig systems, casing and screen pipes are extended inclined to form a pipeline to directly extract pressure-bearing brine bypassing surface obstacles, and casing is used to fix the well under the surface. and the horizontal section is placed in the screen tube to strengthen the well body and filter the sediment.
It has achieved porous extraction on small platforms, increasing land use efficiency, with a large contact area of a single well, and a single well can extract more pressure-bearing brine, effectively preventing well collapse and silt and extending the service life of the well.
Smart Images
Figure CN119288388A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of salt lake brine extraction, and in particular to a salt lake shallow horizontal brine extraction well and a drilling method. Background Art
[0002] Salt lake brine is divided into lake surface water, submerged brine and pressurized brine. Conventional mining methods include direct extraction, channel extraction and well extraction. At present, channel extraction is mainly limited to brine layers with a burial depth of more than 30m, while well extraction is suitable for brine layers with a burial depth of less than 30m. In inland areas, due to continuous mining in recent years and the lack of water supply in most of the salt lakes, the brine layers have a tendency to gradually deepen. The existing well extraction method for pressurized brine in salt lakes is mainly based on vertical shaft extraction, using layered screens and casings to distinguish between brine layers and aquicludes.
[0003] In the actual mining process, the traditional vertical shaft stable brine extraction requires no surface interference. However, with the continuous warming of the global climate, it has caused a considerable impact on the surface. The impact of multiple floods in recent years has caused the lake surface in inland areas to be in a state of large amounts of water for a long time, making it impossible to use conventional methods such as vertical shafts or canal digging to extract brine for production. In view of this, we propose a shallow horizontal brine extraction well and drilling method for salt lakes. Summary of the invention
[0004] In view of the shortcomings of the prior art, the present invention provides a shallow horizontal brine mining well and drilling method in a salt lake, which solves the problem that stable brine mining in traditional vertical shafts requires mining without surface interference, but is difficult to maintain due to environmental factors.
[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a shallow horizontal brine mining well in a salt lake, comprising a crane, a boom of the crane is fixedly connected to a casing to be inserted through a steel cable, the upper end of the casing to be inserted is fixedly connected to a conversion joint, the lower end of the casing to be inserted is fixedly connected to an inserted casing, a wellway is opened on the ground outside the inserted casing, a drilling rig boom is arranged on the outside of the casing to be inserted, the outer side of the casing to be inserted is in contact with a support block, the lower end of the support block is provided with an anti-impact device, the inner surface of the inserted casing is in contact with an oil pipe, the lower end of the oil pipe is fixedly connected to a submersible pump, the end of the submersible pump away from the oil pipe is fixedly connected to a screen pipe, the left and right ends of the support block are slidably connected to a group of support columns, the outer lower end of the support column is fixedly connected to a connecting block, the inner lower end of the support column is fixedly connected to an electric push rod, and the lower end of the conversion joint is fixedly connected to a horizontal crossing drilling rig.
[0006] Preferably, the anti-impact device includes a slider, an elastic telescopic rod is fixedly connected to the upper surface of the slider, a fixed rod is fixedly connected to the outer arc surface of the elastic telescopic rod, a piston is connected to a piston block at the outer arc surface of the fixed rod, a damping chamber is connected to the piston at the outer arc surface of the piston block, and a connecting rod is hinged to the upper end of the outer arc surface of the piston block.
[0007] Preferably, a steel cable is provided at the lower end of the boom of the crane, the interior of the casing is arranged to be hollow, the casing to be inserted is exposed on the ground, the inserted casing is located underground, a plurality of groups of through holes are provided on the outer arc surface of the screen pipe, and an arc surface is provided on the upper end of the support block.
[0008] Preferably, the outer surface of the slider is slidably connected to the support column, the lower end of the slider is fixedly connected to the movable end of the electric push rod, the upper end of the elastic telescopic rod is fixedly connected to the support block, the left and right ends of the fixed rod are fixedly connected to a group of elastic telescopic rods, a through hole is provided at the center of the inner surface of the piston block, and multiple groups of through holes are provided at the end of the piston block close to the damping bin. The piston blocks are provided with two groups, and the proximal ends of the two groups of piston blocks are set to rubber material. The outer arc surfaces of the two groups of piston blocks are provided with magnetic rings close to the rubber blocks, the left and right ends of the damping bin are provided with through holes, the outer arc surface of the damping bin is fixedly connected to the slider, and the upper end of the connecting rod is hinged to the support block.
[0009] A method for drilling a shallow horizontal brine well in a salt lake comprises the following steps: S1: Build a simple drilling platform on top of the target brine layer The drilling platform is located above the target pressure brine layer, and the wellhead needs to be fixed on the platform. S1 uses directional drilling technology with an entry angle of 18°-22° to drill to the target point 1-2m above the bottom plate of the target water layer. The hole is first expanded with a palm plate, and then the casing is lowered for cementing. S2: Directional drilling technology An upward inclination is created at a low angle along the extension direction of the target aquifer to form an upward inclined surface. The preset length of the second opening is 250m-350m. After reaching the preset well depth, drilling is stopped and the screen pipe is lowered to complete the well. Another target point at the end of the second opening is located below the top plate of the target pressurized brine layer.
[0010] Preferably, in S1, a directional drilling process, a D311.2 mm PDC drill bit, and a D346 palm plate are used to drill to 1-2 m above the bottom plate of the target pressure brine layer, and the palm plate is used to expand the hole and the annulus, and then a D244.5 mm casing is run in for cementing.
[0011] Preferably, in S2, a directional drilling technique and a D215.9 mm PDC drill bit are used, and a D139.7 mm screen pipe is lowered to complete the well.
[0012] Preferably, during the process of inserting the casing in steps S1 and S2, in order to ensure that the overall inclination angle of the casing meets the burial angle, the casing in the exposed area needs to be placed above the support block as a whole, and the height position of the upper support block is controlled by an electric push rod to provide support for the casing as a whole, and the spacing distance between two adjacent groups of support columns is between 120cm and 250cm.
[0013] A method for drilling a shallow horizontal brine well in a salt lake comprises the following steps: S101: Casing delivery and installation Use a crane to lift the casing onto the horizontal drilling rig, connect it to the drilling rig through a conversion joint, and then slowly lower it; S102: Casing installation completed When the casing is about to be completely submerged in the borehole, fix the casing with the small crane of the drilling rig, then remove the conversion joint, connect the next casing to the drilling rig, and connect the next casing to the previous casing, and then continue to send it down, and repeat this process until the casing is completely lowered to the bottom of the well. S201: Screen tube lowering Use the drill pipe to add a conversion joint and then connect the screen pipe, connect the next screen pipe to the drilling rig, connect the next screen pipe to the previous screen pipe, and then continue to send it down, and repeat this process.
[0014] Preferably, the outer diameter of the sieve tube is smaller than the inner diameter of the casing tube, the sieve tubes are fixedly connected to each other via a connecting piece, and the casing tubes are fixedly connected to each other via a connecting piece.
[0015] The present invention provides a shallow horizontal brine mining well in a salt lake and a drilling method. It has the following beneficial effects: 1. The present invention forms a pipeline by extending the inclined casing, thereby bypassing the influence of surface obstacles and directly extracting pressurized brine. At the same time, it can save land, realize multiple holes on a smaller platform, and increase land use efficiency.
[0016] 2. The shallow horizontal brine extraction well in the salt lake of the present invention has a large contact surface with the pressurized brine. The contact length of a single well is 10-30 times that of a traditional brine extraction shaft, and the total contact area is more than 10 times that of a traditional shaft. A single well can extract more pressurized brine.
[0017] 3. In the present invention, the shallow horizontal brine mining well in the salt lake is cemented by casing under the surface layer, and a screen pipe is lowered into the horizontal section, which effectively reinforces the well body and prevents the well body from collapsing. At the same time, it can also effectively filter out mud and sand to prevent the well from being blocked by mud and sand, thereby extending the service life of the well. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the wellbore structure of the present invention.
[0019] Figure 2 It is a schematic diagram of the casing running well forming process of the present invention.
[0020] Figure 3 It is a cross-sectional projection diagram of the well inclination data of the horizontal brine production well in the example of the present invention.
[0021] Figure 4 It is a three-dimensional schematic diagram of the support column of the present invention.
[0022] Figure 5 It is a schematic diagram of the anti-impact device of the present invention.
[0023] Figure 6 It is a schematic diagram of the cross section of the damping chamber of the present invention.
[0024] Figure 7 The present invention is a flow chart of the drilling method for a shallow horizontal brine well in a salt lake.
[0025] Figure 8 The present invention is a flow chart of a method for drilling a shallow horizontal brine well in a salt lake.
[0026] Figure numerals: 1. crane; 2. horizontal crossing drilling rig; 3. conversion joint; 4. drilling rig boom; 5. casing to be inserted; 6. inserted casing; 7. well; 8. support column; 9. anti-impact device; 10. support block; 11. electric push rod; 12. oil pipe; 13. submersible pump; 14. screen pipe; 901. elastic telescopic rod; 902. sliding block; 903. fixing rod; 904. piston block; 905. damping chamber; 906. connecting rod. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0028] Example: Please see attached Figure 1 -Attached Figure 4The present invention discloses a shallow horizontal brine mining well in a salt lake and a drilling method, comprising a crane 1, a casing 5 to be inserted is fixedly connected to the boom of the crane 1 through a steel cable, a conversion joint 3 is fixedly connected to the upper end of the casing 5 to be inserted, a casing 6 to be inserted is fixedly connected to the lower end of the casing 5 to be inserted, a well 7 is opened on the ground outside the casing 6 to be inserted, a drilling rig boom 4 is arranged on the outside of the casing 5 to be inserted, a support block 10 is contacted to the outside of the casing 5 to be inserted, an anti-impact device 9 is arranged at the lower end of the support block 10, an oil pipe 12 is contacted to the inner surface of the casing 6 to be inserted, a submersible pump 13 is fixedly connected to the lower end of the oil pipe 12, a screen pipe 14 is fixedly connected to the end of the submersible pump 13 away from the oil pipe 12, a group of support columns 8 are slidably connected to the left and right ends of the support block 10, a connection block 12 is fixedly connected to the outer lower end of the support column 8, an electric push rod 11 is fixedly connected to the inner lower end of the support column 8, and a horizontal crossing drilling rig 2 is fixedly connected to the lower end of the conversion joint 3.
[0029] A steel cable is provided at the lower end of the boom of the crane 1, so that the steel cable can be wound around the outer surface of the casing 5 to be inserted. The interior of the casing 5 is arranged to be hollow, the casing 5 to be inserted is exposed on the ground, and the inserted casing 6 is located underground. A plurality of groups of through holes are provided on the outer arc surface of the screen tube 14, so that the extracted brine can be filtered through the sieve holes on its surface. The upper end of the support block 10 is provided with an arc surface, so that it provides sufficient support to the casing 5 to be inserted when it contacts the casing 5 to be inserted.
[0030] Please see attached Figure 4 -Attached Figure 6 The anti-impact device 9 includes a slider 902, an elastic telescopic rod 901 is fixedly connected to the upper surface of the slider 902, a fixed rod 903 is fixedly connected to the outer arc surface of the elastic telescopic rod 901, a piston is connected to a piston block 904 at the outer arc surface of the fixed rod 903, and a damping chamber 905 is connected to the piston at the outer arc surface of the piston block 904. The damping chamber 905 is filled with damping fluid, so when the piston block 904 moves inside the damping chamber 905, it will be hindered by the damping fluid, and the movement damping of the piston block 904 is formed by the damping fluid, and a connecting rod 906 is hinged to the upper end of the outer arc surface of the piston block 904.
[0031] The outer surface of the slider 902 is slidably connected to the support column 8, and the lower end of the slider 902 is fixedly connected to the movable end of the electric push rod 11. Therefore, by controlling the electric push rod 11, the slider 902 can be driven to slide inside the support column 8 as a whole and adjust its support height. The upper end of the elastic telescopic rod 901 is fixedly connected to the support block 10, and the left and right ends of the fixed rod 903 are fixedly connected to a group of elastic telescopic rods 901. A through hole is provided at the center of the inner surface of the piston block 904, so that it can slide on the outer arc surface of the fixed rod 903. The end of the piston block 904 close to the damping chamber 905 is provided with multiple groups of through holes. Therefore, when it moves inside the damping chamber 905, it will not be completely blocked by the damping fluid inside the damping chamber 905, but will only be hindered by the damping fluid inside the damping chamber 905. The piston block 904 is provided with two groups, and the two groups The adjacent ends of the piston blocks 904 are made of rubber material. Therefore, when the impact force on the support block 10 is large and drives the piston blocks 904 to approach each other, it is not easy for the two groups of piston blocks 904 to collide and be damaged with each other. Magnetic rings are provided on the outer arc surfaces of the two groups of piston blocks 904 near the rubber blocks. The polarities of the magnetic blocks on the adjacent surfaces of the two groups of piston blocks 904 are the same. Therefore, when the two groups of piston blocks 904 are about to contact, the magnetic rings can hinder the mutual approach of the piston blocks 904 through their own magnetic force. Through holes are provided on the left and right ends of the damping chamber 905, so that the piston blocks 904 can slide at both ends. The outer arc surface of the damping chamber 905 is fixedly connected to the slider 902, and the upper end of the connecting rod 906 is hinged to the support block 10. Since the connecting rod 906 is arranged in an inclined shape as a whole, it can synchronously push the two groups of piston blocks 904 below to move toward each other when it is subjected to impact force from above.
[0032] Please see attached Figure 7 A method for drilling a shallow horizontal brine well in a salt lake comprises the following steps: S1: Build a simple drilling platform on top of the target brine layer A simple drilling platform with a size of 40m×40m is built on the top of the target brine layer. It is located above the target pressure brine layer. The wellhead is set at a suitable position on the platform. Directional drilling technology is used at the beginning. The entry angle is 18°-22°. Drill to the target point A between 1-2m above the bottom plate of the target water layer. First, the hole is expanded with a palm plate, and then the casing is lowered for cementing. S2: Directional drilling technology Directional drilling technology is used to create an upward inclination at a low angle along the extension direction of the target aquifer to form an upward inclined surface, which is conducive to converging downward to target point A for easy extraction. The opening length of S2 is preset to be 300m. Drilling is stopped after reaching the preset well depth, and the screen pipe is lowered to complete the well. Target point B at the end hole of the second opening section is located below the top plate of the target pressurized brine layer.
[0033] Wellbore structure drilling casing parameters Drilling sequence well deep Drill bit size mm Casing size mm Cementing method Environmental control cement slurry return height m Remark S1 1-2m into the top of the target aquifer D311.2 D244.5 Casing cementing ground Directional deflection is carried out downwards, and the first drilling is carried out 1-2m above the bottom plate of the target pressure brine layer, and the casing is lowered to seal the loose layer. S2 To the top of the target aquifer, length 300m D215.9 D139.7 Screen tube none Directional deflection upward to below the top of the target pressure brine layer, screen completion, no cementing In the S1, a directional drilling technique, a D311.2 mm PDC drill bit, and a D346 plate were used to drill to 1-2 m above the bottom plate of the target pressure brine layer, and the hole was expanded with a plate to expand the annulus, and then a D244.5 mm casing was run in for cementing.
[0034] In S2, a directional drilling technique and a D215.9 mm PDC drill bit are used, and a D139.7 mm screen pipe is run in to complete the well.
[0035] During the process of inserting the casing in steps S1 and S2, in order to ensure that the overall inclination angle of the casing meets the burial angle, the casing in the exposed area needs to be placed above the support block as a whole, and the height position of the upper support block is controlled by an electric push rod to provide support for the casing as a whole. The distance between two adjacent groups of support columns is between 120cm and 250cm.
[0036] Please see attached Figure 8 A method for drilling a shallow horizontal brine well in a salt lake comprises the following steps: S101: Casing delivery and installation Use a crane to lift the casing onto the horizontal drilling rig, connect it to the drilling rig through a conversion joint, and then slowly lower it; S102: Casing installation completed When the casing is about to be completely submerged in the borehole, fix the casing with the small crane of the drilling rig, then remove the conversion joint, connect the next casing to the drilling rig, and connect the next casing to the previous casing, and then continue to send it down, and repeat this process until the casing is completely lowered to the bottom of the well. S201: Screen tube lowering Use the drill pipe to add a conversion joint and then connect the screen pipe, connect the next screen pipe to the drilling rig, connect the next screen pipe to the previous screen pipe, and then continue to send it down, and repeat this process.
[0037] Compared with vertical shafts, at least 3-4 horizontal wells can be constructed in 3-4 different directions on a drilling platform built with fill, which saves earthwork. The contact length between a single horizontal brine well and the pressurized brine layer is 300m, which is 10-30 times that of the traditional brine vertical shaft. It can significantly increase the total water output and extend the drilling and extraction life. For general shallow crossing wells, due to the small entry angle and large friction, it is impossible to directly lower the casing and screen into the predetermined position by gravity. Most of them are open holes or short casings (no more than 120m). Through this improvement in well completion technology, the casing can be easily lowered to more than 200m, and the screen can also be lowered to more than 300m, so that the entire horizontal well is reinforced. This not only solves the problem of weak formations that are prone to collapse and deformation, but also solves the problem of water seepage and sediment prevention in the horizontal section.
[0038] The outer diameter of the sieve pipe is smaller than the inner diameter of the casing pipe, the sieve pipes are fixedly connected to each other via a connecting piece, and the casing pipes are fixedly connected to each other via a connecting piece.
[0039] The parameters of the DT02-H1 well established according to the above steps are as follows: DT-H02 well deflection data Well depth (m) Vertex angle (°) Azimuth (°) Well depth (m) Vertex angle (°) Azimuth (°) 0 107.99 -18.15 259.2 107.78 0.8 28.8 107.91 -19.56 288 108.07 2.29 57.6 107.92 -17.98 316.8 107.89 0.56 86.4 107.93 -13.43 345.6 110.25 1.02 115.2 107.93 -8.27 374.4 108.48 0.47 144 107.91 -4.51 403.2 107.82 0.5 172.8 107.93 -0.29 432 107.86 0.35 201.6 106.7 0.29 460.8 107.91 0.23 230.4 108.05 1.6 489.6 108.1 0.43 The above data is based on the normal and stable extraction of brine for more than 6 months when the average lake water depth is above 1m, and the average flow rate of DT02-H1 well is 58m 3 / h, which is close to the theoretical numerical limit that the submersible pump and well diameter can reach. Compared with ordinary vertical shaft brine extraction, a single well can extract 80,000m more 3 .
Claims
1. A shallow horizontal brine mining well in a salt lake, comprising a crane (1), characterized in that: The boom of the crane (1) is fixedly connected to a casing (5) to be inserted via a steel cable; the upper end of the casing (5) to be inserted is fixedly connected to a conversion joint (3); the lower end of the casing (5) to be inserted is fixedly connected to an inserted casing (6); a well (7) is provided on the ground outside the inserted casing (6); a drilling rig boom (4) is provided outside the casing (5); the outer side of the casing (5) to be inserted is in contact with a support block (10); the lower end of the support block (10) is provided with an anti-impact device (9); the inserted casing (6) The inner surface of the support block (10) contacts an oil pipe (12), the lower end of the oil pipe (12) is fixedly connected to a submersible pump (13), the end of the submersible pump (13) away from the oil pipe (12) is fixedly connected to a screen pipe (14), the left and right ends of the support block (10) are slidably connected to a group of support columns (8), the outer lower end of the support column (8) is fixedly connected to a connecting block (12), the inner lower end of the support column (8) is fixedly connected to an electric push rod (11), and the lower end of the conversion joint (3) is fixedly connected to a horizontal drilling rig (2).
2. A shallow horizontal brine mining well in a salt lake according to claim 1, characterized in that: The anti-impact device (9) comprises a slider (902), the upper surface of the slider (902) being fixedly connected to an elastic telescopic rod (901), the outer arc surface of the elastic telescopic rod (901) being fixedly connected to a fixing rod (903), the piston at the outer arc surface of the fixing rod (903) being connected to a piston block (904), the piston at the outer arc surface of the piston block (904) being connected to a damping chamber (905), and the upper end of the outer arc surface of the piston block (904) being hinged to a connecting rod (906).
3. A shallow horizontal brine mining well in a salt lake according to claim 1, characterized in that: A steel cable is provided at the lower end of the boom of the crane (1); the interior of the casing (5) is arranged to be hollow; the casing to be inserted (5) is exposed on the ground; the inserted casing (6) is located underground; a plurality of groups of through holes are provided on the outer arc surface of the screen tube (14); and the upper end of the support block (10) is provided with an arc surface.
4. A shallow horizontal brine mining well in a salt lake according to claim 2, characterized in that: The outer surface of the slider (902) is slidably connected to the support column (8), the lower end of the slider (902) is fixedly connected to the movable end of the electric push rod (11), the upper end of the elastic telescopic rod (901) is fixedly connected to the support block (10), the left and right ends of the fixed rod (903) are fixedly connected to a group of elastic telescopic rods (901), and a through hole is provided at the center of the inner surface of the piston block (904). The piston block (904) is close to the damping chamber (904). 05) has a plurality of through holes at one end, the piston block (904) is provided with two groups, the two groups of piston blocks (904) have one end close to each other and are made of rubber material, the outer arc surfaces of the two groups of piston blocks (904) are provided with magnetic rings near the rubber blocks, the left and right ends of the damping chamber (905) are provided with through holes, the outer arc surface of the damping chamber (905) is fixedly connected to the slider (902), and the upper end of the connecting rod (906) is hinged to the support block (10).
5. A method for drilling a shallow horizontal brine well in a salt lake according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1: Build a simple drilling platform on top of the target brine layer The drilling platform is located above the target pressure brine layer, and the wellhead needs to be fixed on the platform. Directional drilling technology is used at the beginning, with an entry angle of 18°-22°, and the target point is drilled 1-2m above the bottom plate of the target water layer. The hole is expanded with a palm plate first, and then the casing is lowered for cementing; S2: Directional drilling technology An upward inclination is created at a low angle along the extension direction of the target aquifer to form an upward inclined surface. The preset length of the second opening is 250m-350m. After reaching the preset well depth, drilling is stopped and the screen pipe is lowered to complete the well. Another target point at the end of the second opening is located below the top plate of the target pressurized brine layer.
6. A method for drilling a shallow horizontal brine well in a salt lake according to claim 5, characterized in that: In the S1, a directional drilling technique, a D311.2 mm PDC drill bit, and a D346 plate were used to drill to 1-2 m above the bottom plate of the target pressure brine layer, and the hole was expanded with a plate to expand the annulus, and then a D244.5 mm casing was run in for cementing.
7. The method for drilling a shallow horizontal brine well in a salt lake according to claim 5, characterized in that: In S2, a directional drilling technique and a D215.9 mm PDC drill bit are used, and a D139.7 mm screen pipe is run in to complete the well.
8. The method for drilling a shallow horizontal brine well in a salt lake according to claim 5, characterized in that: During the process of inserting the casing in steps S1 and S2, in order to ensure that the overall inclination angle of the casing meets the burial angle, the casing in the exposed area needs to be placed above the support block as a whole, and the height position of the upper support block is controlled by an electric push rod to provide support for the casing as a whole. The distance between two adjacent groups of support columns is between 120cm and 250cm.
9. A method for drilling a shallow horizontal brine well in a salt lake according to claim 5, characterized in that: The following steps are involved: S101: Casing delivery and installation Use a crane to lift the casing onto the horizontal drilling rig, connect it to the drilling rig through a conversion joint, and then slowly lower it; S102: Casing installation completed When the casing is about to be completely submerged in the borehole, fix the casing with the small crane of the drilling rig, then remove the conversion joint, connect the next casing to the drilling rig, and connect the next casing to the previous casing, and then continue to send it down, and repeat this process until the casing is completely lowered to the bottom of the well. S201: Screen tube lowering Use the drill pipe to add a conversion joint and then connect the screen pipe, connect the next screen pipe to the drilling rig, connect the next screen pipe to the previous screen pipe, and then continue to send it down, and repeat this process.
10. A method for drilling a shallow horizontal brine well in a salt lake according to claim 9, characterized in that: The outer diameter of the sieve pipe is smaller than the inner diameter of the casing pipe, the sieve pipes are fixedly connected to each other via a connecting piece, and the casing pipes are fixedly connected to each other via a connecting piece.