Drilling tool for seismic exploration and drilling method thereof

Abstract

The invention relates to a drilling tool for seismic exploration and a drilling method thereof.The drilling tool for seismic exploration comprises a supporting frame and a drill bit assembly, the drill bit assembly is used for drilling the ground, a lifting assembly used for controlling the height of the drill bit assembly is arranged on the supporting frame, and a plurality of supporting screw rods are arranged on the supporting frame at intervals in the circumferential direction; the supporting screw rod is arranged in the height direction and is in threaded connection with the supporting frame, a supporting rod is arranged below the supporting screw rod, a supporting base is hinged to the end, away from the supporting screw rod, of the supporting rod, and a buffering assembly is arranged between the supporting rod and the supporting screw rod. The supporting frame is placed at the position needing to be drilled, the different supporting screws are sequentially rotated, the heights of the different supporting rods are adjusted, the supporting base abuts against the ground, the lengths, extending towards the ground, of the different supporting rods are different, the supporting frame can be conveniently installed on the steep ground, and the stability of the drill bit assembly in the drilling process is improved.

Description

Technical Field

[0001] The present application relates to the technical field of drilling equipment, and in particular to a drilling tool for seismic exploration and a drilling method thereof. Background Art

[0002] Seismic exploration needs to be carried out in mining areas related to igneous and metamorphic rocks. The difficulty of exploration is much higher than that of general energy seismic exploration. Seismic data acquisition is the basis for obtaining good seismic data. The key step in seismic acquisition is drilling and well formation, which is a difficult problem that needs to be solved urgently in seismic production. The surface environment is poor, the terrain is undulating, the rocks are exposed, and there are dense thorns. All of these factors are not conducive to drilling.

[0003] Related technologies can refer to the Chinese patent with authorization announcement number CN213330892U, which discloses a geological and hydrological exploration drilling tool, including a drilling frame, a lifting plate is arranged in the middle of the drilling frame, a motor is fixedly connected to the upper surface of the lifting plate, the output end of the motor passes through the lifting plate, a drill rod is arranged at the output end of the motor, a first cavity is opened in the lifting plate, and a worm gear is fixedly connected to the output end of the motor located in the first cavity. When the motor rotates, the cooperation of the worm gear and the worm drives the gear to rotate. When the drill rod rotates, the lifting plate moves up and down along the support rod through the cooperation of the gear and the rack, thereby driving the drill rod to drill the ground.

[0004] Regarding the above-mentioned related technologies, the drilling rig is made of welded steel pipes and cannot be adjusted. It is difficult to level it in steep areas and has poor stability. The drilling process is not stable enough and is easily affected by factors such as stratum changes and geological structures, making it difficult to obtain accurate underground geological information. Summary of the invention

[0005] In order to improve the stability of the drilling process of the drilling tool, the present application provides a drilling tool for seismic exploration and a drilling method thereof.

[0006] In the first aspect, the present application provides a drilling tool for seismic exploration, which adopts the following technical solution: A drilling tool for seismic exploration comprises a support frame and a drill bit assembly, wherein the drill bit assembly is used for drilling the ground, a lifting assembly for controlling the height of the drill bit assembly is arranged on the support frame, a plurality of support screws are arranged at intervals in the circumferential direction of the support frame, the support screws are arranged along the height direction and are threadedly connected to the support frame, a support rod is arranged below the support screw, a support base is hinged at one end of the support rod away from the support screw, and a buffer assembly is arranged between the support rod and the support screw.

[0007] By adopting the above technical solution, the support frame is placed at the position where drilling is required, and different support screws are rotated in sequence to adjust the heights of different support rods so that the support base is in contact with the ground. Different support rods extend to different lengths toward the ground, which makes it convenient to install the support frame on steep ground and improves the stability of the drill assembly during drilling.

[0008] Optionally, the buffer assembly includes a buffer rod, a buffer outer cylinder and a buffer inner cylinder located in the buffer outer cylinder, a compensation cavity is formed between the buffer outer cylinder and the buffer inner cylinder, the buffer rod is coaxially fixedly connected to the support screw, the buffer outer cylinder is coaxially fixedly connected to the support rod, a piston is slidably connected in the buffer inner cylinder, the buffer rod extends into the buffer inner cylinder and is slidably connected to the buffer inner cylinder, the piston is fixedly connected to the buffer rod at one end away from the support rod, the buffer inner cylinder is respectively provided with a first flow channel and a second flow channel located on both sides of the piston and connected to the compensation cavity, the piston divides the interior of the buffer inner cylinder into a rod cavity connected to the first flow channel and a rodless cavity connected to the second flow channel, a magnetic field generating part located in the rodless cavity is installed in the buffer inner cylinder, and the buffer inner cylinder and the buffer outer cylinder are filled with magnetorheological fluid.

[0009] By adopting the above technical scheme, when the drill bit assembly is started to drill the ground, the drill bit assembly works continuously to make the support frame vibrate continuously and the buffer rod move up and down. When the piston moves toward the rodless cavity, the magnetorheological fluid in the rodless cavity enters the buffer cavity through the magnetic field generating part and the second flow channel. The magnetic field generating part generates a magnetic field to change the viscosity of the magnetorheological fluid, restricts the piston, and performs buffering and vibration reduction. When the piston moves toward the rod cavity, the magnetorheological fluid in the rod cavity is squeezed through the first flow channel, the compensation cavity and the second flow channel to enter the magnetic field release part and the rodless cavity. The magnetic field generating part generates a magnetic field to change the viscosity of the magnetorheological fluid, restricts the piston, and performs buffering and vibration reduction. The buffer component buffers between the support screw and the support rod, thereby improving the stability of the support frame during the operation of the drill bit assembly.

[0010] Optionally, the magnetic field generating part includes a coil and a magnetic isolation sleeve, the magnetic isolation sleeve is installed in the buffer inner cylinder, and the coil is installed between the magnetic isolation sleeve and the buffer inner cylinder.

[0011] By adopting the above technical solution, a magnetic field is generated by a coil, and the viscosity of the magnetorheological fluid is changed to cushion the piston. The magnetic isolation sleeve is helpful to increase the magnetic field strength generated by the coil, which facilitates the cushioning of the piston.

[0012] Optionally, a plurality of magnetic conductive disks and magnetic conductive fan disks are arranged in the magnetic isolation sleeve, a guide hole is opened in the middle of the magnetic conductive disk, a plurality of guide grooves are opened in the circumferential direction of the magnetic conductive fan disk, and the magnetic conductive disks and magnetic conductive fan disks are staggered along the axial direction of the magnetic isolation sleeve.

[0013] By adopting the above technical solution, the magnetorheological fluid passes through the guide holes on the magnetic conductive disk and the guide grooves on the magnetic conductive fan disk in sequence, extending the path of the magnetorheological fluid in the magnetic field generating part, which is beneficial to improving the damping effect.

[0014] Optionally, the support screw is coaxially fixedly connected with a rotating disk at one end away from the support rod, the diameter of the rotating disk is larger than the diameter of the support screw, and a rotating handle is provided on the side of the rotating disk away from the support screw.

[0015] By adopting the above technical solution, the rotating disk is rotated by turning the handle, so that the supporting screw can be rotated conveniently.

[0016] Optionally, the lifting assembly includes a lifting bracket, a lifting screw and a lifting plate, the lifting bracket is installed on the support frame along the height direction, the lifting screw is installed on the support frame and is rotatably connected to the support frame, the drill bit assembly is installed on the lifting plate, and the lifting screw passes through the lifting plate and is threadedly connected to the lifting plate.

[0017] By adopting the above technical solution, the lifting screw is rotated to make the lifting plate move up and down along the length direction of the lifting screw, so that the height of the lifting plate can be adjusted conveniently.

[0018] Optionally, the support frame is provided with two limit brackets located on both sides of the lifting bracket, and the two limit brackets are both provided with limit guide rails along the height direction, and limit guide blocks matching with the limit guide rails are respectively provided on both sides of the lifting plate.

[0019] By adopting the above technical solution, when the lifting plate moves along the length direction of the lifting screw, the limiting guide block moves along the limiting guide rail to provide limiting support for the movement of the lifting plate, thereby improving the stability of the lifting process of the lifting plate.

[0020] Optionally, a level is installed on the lifting plate.

[0021] By adopting the above technical solution, leveling is facilitated by using a spirit level, so that the lifting plate is set in the horizontal direction and the drill assembly works in the vertical direction.

[0022] Optionally, universal wheels are installed at the four corners below the support frame.

[0023] By adopting the above technical solution, the support frame can be conveniently moved through the universal wheels, and the entire drilling tool can be moved.

[0024] In a second aspect, the present application provides a drilling method for a seismic exploration drilling tool, comprising the following steps: S1. Place the support frame at the location where drilling is required; S2, turn the different support screws in sequence to make the support base fit the ground and keep the drill bit in the vertical direction; S3. Start the drill assembly and adjust the height of the drill assembly through the lifting component to perform drilling work.

[0025] By adopting the above technical solution, by rotating different support screws, the support base and the ground lifting box are made to maintain the horizontal setting of the support frame on steep ground, so that the drill bit assembly is set in the vertical direction, thereby improving the stability of the drill bit assembly during drilling.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Place the support frame at the position where drilling is required, turn different support screws in sequence, adjust the height of different support rods, make the support base contact the ground, and different support rods extend to different lengths toward the ground, which is convenient for installing the support frame on steep ground and improving the stability of the drill assembly during drilling; 2. When the drill bit assembly is started and the ground is drilled, the drill bit assembly works continuously to make the support frame vibrate continuously and the buffer rod move up and down. When the piston moves toward the rodless cavity, the magnetorheological fluid in the rodless cavity enters the buffer cavity through the magnetic field generating part and the second flow channel. The magnetic field generating part generates a magnetic field to change the viscosity of the magnetorheological fluid, restricts the piston, and performs buffering and vibration reduction. When the piston moves toward the rod cavity, the magnetorheological fluid in the rod cavity is squeezed through the first flow channel, the compensation cavity, and the second flow channel to enter the magnetic field release part and the rodless cavity. The magnetic field generating part generates a magnetic field to change the viscosity of the magnetorheological fluid, restricts the piston, and performs buffering and vibration reduction. The buffer assembly buffers between the support screw and the support rod, thereby improving the stability of the support frame during the operation of the drill bit assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a drilling tool for seismic exploration.

[0028] Figure 2 The present invention is a schematic diagram showing the internal structure of a buffer component in a drilling tool for seismic exploration.

[0029] Figure 3 The present invention is a schematic diagram showing the connection relationship between a magnetic disk and a magnetic fan disk in a drilling tool for seismic exploration.

[0030] Figure 4 The present invention is a schematic flow chart of a drilling method of a drilling tool for seismic exploration.

[0031] Explanation of the reference numerals in the accompanying drawings: 1. Support frame; 11. Universal wheel; 2. Drill assembly; 3. Lifting assembly; 31. Lifting bracket; 32. Lifting screw; 33. Lifting plate; 331. Limiting guide block; 34. Lifting motor; 4. Limiting bracket; 41. Limiting guide rail; 5. Support screw; 51. Rotating disk; 511. Rotating handle; 6. Support rod; 61. Support base; 7. Buffer assembly; 71. Buffer rod; 711. Piston; 72. Buffer outer cylinder; 73. Buffer inner cylinder; 731. First flow channel; 732. Second flow channel; 74. Rod chamber; 75. Rodless chamber; 8. Magnetic field generating part; 81. Coil; 82. Magnetic isolation sleeve; 83. Magnetic conductive disc; 831. Guide hole; 84. Magnetic conductive fan disc; 841. Guide groove; 9. Level. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0033] Embodiment 1: The embodiment of the present application discloses a drilling tool for seismic exploration.

[0034] Reference Figure 1 A drilling tool for seismic exploration includes a support frame 1 and a drill bit assembly 2. The drill bit assembly 2 is used for drilling the ground. The drill bit assembly 2 includes a drill rod, a drill bit installed at the end of the drill rod, and a driving assembly for driving the drill rod to rotate. The driving assembly for driving the drill rod is a prior art and will not be described in the embodiments of the present application.

[0035] Reference Figure 1 The support frame 1 is provided with a lifting assembly 3 for controlling the height of the drill assembly 2. The lifting assembly 3 includes a lifting bracket 31, a lifting screw 32 and a lifting plate 33. The lifting bracket 31 is installed on the support frame 1 along the height direction. The lifting screw 32 is installed on the support frame 1 and is rotatably connected with the support frame 1. The drill assembly 2 is installed on the lifting plate 33. The lifting screw 32 passes through the lifting plate 33 and is threadedly connected with the lifting plate 33. A lifting motor 34 is installed on the lifting bracket 31. The output shaft of the lifting motor 34 is coaxially fixedly connected with the lifting screw 32. The lifting screw 32 is driven to rotate by the lifting motor 34, so that the lifting plate 33 moves up and down along the length direction of the lifting screw 32, so as to facilitate the adjustment of the height of the lifting plate 33.

[0036] Reference Figure 1Two limit brackets 4 are installed on the support frame 1, which are located on both sides of the lifting bracket 31. The two limit brackets 4 are arranged in the height direction. The two limit brackets 4 are installed with limit guide rails 41 in the height direction. The two sides of the lifting plate 33 are respectively fixedly connected with limit guide blocks 331 that match the limit guide rails 41. When the lifting plate 33 moves along the length direction of the lifting screw 32, the limit guide block 331 is located in the limit guide rail 41 and moves along the length direction of the limit guide rail 41, so as to limit and support the movement of the lifting plate 33, thereby improving the stability of the lifting plate 33 during the lifting process.

[0037] Reference Figure 1 The support frame 1 is provided with a plurality of support screws 5 at intervals in the circumferential direction. The support screws 5 are arranged in the height direction and are threadedly connected to the support frame 1. A support rod 6 is connected below the support screw 5. A support base 61 is hingedly connected to the end of the support rod 6 away from the support screw 5. The support base 61 can rotate with the end of the support rod 6. A rotating disk 51 is coaxially fixedly connected to the end of the support screw 5 away from the support rod 6. The diameter of the rotating disk 51 is larger than the diameter of the support screw 5. A rotating handle 511 is provided on the side of the rotating disk 51 away from the support screw 5. The rotating disk 51 is rotated by the rotating handle 511, so that the support screw 5 can be rotated conveniently. Different support screws 5 are rotated in turn to adjust the height of different support rods 6 so that the support base 61 abuts against the ground. Different support rods 6 extend to different lengths in the direction of the ground. The support base 61 abuts against the ground, so that the support frame 1 can be installed on steep ground conveniently, and the stability of the drilling process of the drill assembly 2 can be improved.

[0038] Reference Figure 1 and Figure 2The buffer assembly 7 includes a buffer rod 71, a buffer outer cylinder 72 and a buffer inner cylinder 73 located in the buffer outer cylinder 72, a compensation chamber is formed between the buffer outer cylinder 72 and the buffer inner cylinder 73, the buffer rod 71 is coaxially fixedly connected to the support screw 5, the buffer outer cylinder 72 is coaxially fixedly connected to the support rod 6, a piston 711 is slidably connected in the buffer inner cylinder 73, the buffer rod 71 extends into the buffer inner cylinder 73 and is slidably connected to the buffer inner cylinder 73, the piston 711 is fixedly connected to the buffer rod 71 at one end away from the support rod 6, and the buffer inner cylinder 73 is respectively provided with a first flow channel 731 and a second flow channel 732 located on both sides of the piston 711 and connected to the compensation chamber, the piston 711 divides the interior of the buffer inner cylinder 73 into a rod chamber 74 connected to the first flow channel 731 and a rodless chamber 75 connected to the second flow channel 732, a magnetic field generating part 8 located in the rodless chamber 75 is installed in the buffer inner cylinder 73, and the buffer inner cylinder 73 and the buffer outer cylinder 72 are filled with magnetorheological fluid. When the drill bit assembly 2 is started to drill the ground, the drill bit assembly 2 continues to work so that the support frame 1 vibrates continuously and the buffer rod 71 moves up and down. When the piston 711 moves toward the rodless chamber 75, the magnetorheological fluid in the rodless chamber 75 enters the buffer chamber through the magnetic field generating part 8 and the second flow channel 732. The magnetic field generating part 8 generates a magnetic field to change the viscosity of the magnetorheological fluid, restricts the piston 711, and performs buffering and vibration reduction. When the piston 711 moves toward the rod chamber 74, the magnetorheological fluid in the rod chamber 74 is squeezed through the first flow channel 731, the compensation chamber and the second flow channel 732 to enter the magnetic field release part and the rodless chamber 75. The magnetic field generating part 8 generates a magnetic field to change the viscosity of the magnetorheological fluid, restricts the piston 711, and performs buffering and vibration reduction. The buffer component 7 buffers between the support screw 5 and the support rod 6, thereby improving the stability of the support frame 1 during the operation of the drill bit assembly 2.

[0039] Reference Figure 2 and Figure 3 The magnetic field generating part 8 includes a coil 81 and a magnetic isolation sleeve 82. The magnetic isolation sleeve 82 is installed in the buffer inner cylinder 73, and the coil 81 is installed between the magnetic isolation sleeve 82 and the buffer inner cylinder 73. The magnetic field is generated by the coil 81, and the viscosity of the magnetorheological fluid is changed to buffer the piston 711. The magnetic isolation sleeve 82 is conducive to improving the magnetic field strength generated by the coil 81, which is convenient for buffering the piston 711.

[0040] Reference Figure 2 and Figure 3 A plurality of magnetic disks 83 and magnetic fan disks 84 are arranged in the magnetic isolation sleeve 82. A flow guide hole 831 is provided in the middle of the magnetic disk 83, and a plurality of flow guide grooves 841 are provided in the circumferential direction of the outer periphery of the magnetic fan disk 84. The magnetic disks 83 and the magnetic fan disks 84 are arranged alternately along the axis direction of the magnetic isolation sleeve 82. The magnetorheological fluid passes through the flow guide holes 831 on the magnetic disk 83 and the flow guide grooves 841 on the magnetic fan disk 84 in sequence, extending the path of the magnetorheological fluid in the magnetic field generating part 8, which is beneficial to improving the damping effect.

[0041] Reference Figure 1 A level meter 9 is installed on the lifting plate 33, and the level meter 9 is used to facilitate leveling, so that the lifting plate 33 is set in the horizontal direction and the drill assembly 2 works in the vertical direction.

[0042] Reference Figure 1 Universal wheels 11 are installed at the four corners below the support frame 1 to facilitate the movement of the support frame 1 and the entire drilling tool.

[0043] The implementation principle of a drilling tool for seismic exploration in an embodiment of the present application is: place the support frame 1 at the position where drilling is required, rotate different support screws 5 in turn, adjust the heights of different support rods 6, make the support base 61 abut against the ground, and extend different support rods 6 to different lengths in the direction of the ground, so as to facilitate the installation of the support frame 1 on steep ground and improve the stability of the drill bit assembly 2 during drilling.

[0044] Embodiment 2: Reference Figure 4 The present application discloses a drilling method for a seismic exploration drill, comprising the following steps: S1, placing the support frame 1 at the position where drilling is required; S2, rotating different support screws 5 in sequence, so that the support base 61 fits the ground and the drill bit remains in a vertical direction; S3, start the drill assembly 2, and adjust the height of the drill assembly 2 through the lifting component 3 to perform drilling work.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A drilling tool for seismic exploration, characterized in that: The invention comprises a support frame (1) and a drill bit assembly (2), wherein the drill bit assembly (2) is used for drilling the ground, a lifting assembly (3) for controlling the height of the drill bit assembly (2) is arranged on the support frame (1), a plurality of support screws (5) are arranged at intervals in the circumferential direction of the support frame (1), the support screws (5) are arranged along the height direction and are threadedly connected to the support frame (1), a support rod (6) is arranged below the support screw (5), a support base (61) is hingedly connected to one end of the support rod (6) away from the support screw (5), and a buffer assembly (7) is arranged between the support rod (6) and the support screw (5).

2. A seismic exploration drilling tool according to claim 1, characterized in that: The buffer assembly (7) comprises a buffer rod (71), a buffer outer tube (72) and a buffer inner tube (73) located inside the buffer outer tube (72); a compensation chamber is formed between the buffer outer tube (72) and the buffer inner tube (73); the buffer rod (71) is coaxially fixedly connected to the support screw (5); the buffer outer tube (72) is coaxially fixedly connected to the support rod (6); a piston (711) is slidably connected inside the buffer inner tube (73); the buffer rod (71) extends into the buffer inner tube (73) and is slidably connected to the buffer inner tube (73); the piston (711) is away from the support rod (6) One end is fixedly connected to the buffer rod (71), and the buffer inner tube (73) is respectively provided with a first flow channel (731) and a second flow channel (732) located on both sides of the piston (711) and connected to the compensation chamber. The piston (711) divides the interior of the buffer inner tube (73) into a rod chamber (74) connected to the first flow channel (731) and a rodless chamber (75) connected to the second flow channel (732). The buffer inner tube (73) is installed with a magnetic field generating part (8) located in the rodless chamber (75), and the buffer inner tube (73) and the buffer outer tube (72) are filled with magnetorheological fluid.

3. A seismic exploration drilling tool according to claim 2, characterized in that: The magnetic field generating part (8) comprises a coil (81) and a magnetic isolation sleeve (82); the magnetic isolation sleeve (82) is installed in a buffer inner cylinder (73); and the coil (81) is installed between the magnetic isolation sleeve (82) and the buffer inner cylinder (73).

4. A seismic exploration drilling tool according to claim 3, characterized in that: A plurality of magnetic conductive disks (83) and magnetic conductive fan disks (84) are arranged in the magnetic isolation sleeve (82); a flow guide hole (831) is provided in the middle of the magnetic conductive disk (83); a plurality of flow guide grooves (841) are provided in the circumferential direction of the outer periphery of the magnetic conductive fan disk (84); and the magnetic conductive disks (83) and the magnetic conductive fan disks (84) are arranged alternately along the axial direction of the magnetic isolation sleeve (82).

5. A seismic exploration drilling tool according to claim 2, characterized in that: A rotating disk (51) is coaxially fixedly connected to one end of the support screw (5) away from the support rod (6); the diameter of the rotating disk (51) is larger than the diameter of the support screw (5); and a rotating handle (511) is provided on the side of the rotating disk (51) away from the support screw (5).

6. A seismic exploration drilling tool according to claim 1, characterized in that: The lifting assembly (3) comprises a lifting bracket (31), a lifting screw (32) and a lifting plate (33); the lifting bracket (31) is mounted on the support frame (1) along the height direction; the lifting screw (32) is mounted on the support frame (1) and is rotatably connected to the support frame (1); the drill assembly (2) is mounted on the lifting plate (33); the lifting screw (32) passes through the lifting plate (33) and is threadedly connected to the lifting plate (33).

7. A seismic exploration drilling tool according to claim 6, characterized in that: The support frame (1) is provided with two limit brackets (4) located on both sides of the lifting bracket (31), and the two limit brackets (4) are both provided with limit guide rails (41) along the height direction, and the lifting plate (33) is respectively provided with limit guide blocks (331) matched with the limit guide rails (41) on both sides.

8. A seismic exploration drilling tool according to claim 6, characterized in that: A level gauge (9) is installed on the lifting plate (33).

9. A seismic exploration drilling tool according to claim 1, characterized in that: Universal wheels (11) are installed at the four corners below the support frame (1).

10. A drilling method for a seismic exploration drill, based on the seismic exploration drill according to any one of claims 1 to 9, characterized in that: The steps include: S1. Place the support frame (1) at the location where drilling is required; S2, rotating different support screws (5) in sequence, so that the support base (61) fits against the ground and the drill bit remains in a vertical direction; S3, starting the drill bit assembly (2), and adjusting the height of the drill bit assembly (2) through the lifting component (3) to perform drilling work.

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