Underground positioning device for petroleum drilling and production

Abstract

The utility model discloses an underground positioning device for petroleum drilling and production, which belongs to the technical field of petroleum drilling and production and comprises a box body, a hanging ring is fixedly connected to the top of the box body, partition plates are fixedly connected to the upper side and the lower side of an inner cavity of the box body, and a storage battery is arranged in the middle of the box body. And a controller and a range finder are arranged at the bottom of the inner cavity of the box body. Firstly, the four stabilizing plates can be controlled to move towards the side away from the box body at the same time through the positioning supporting mechanism, the stabilizing plates are attached to the well wall, the stability of the box body is improved, the four supporting rods at the top are combined to control the first stabilizing wheels to be attached to the well wall, the box body is prevented from inclining, and the stability of the box body is improved; and through extrusion of a limiting sliding block on a spring, the position of a first stabilizing wheel can be automatically buffered and changed when the diameter of the well wall changes, the stability of the box body is improved, and the using effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling, in particular to a downhole positioning device for oil drilling. Background Art

[0002] Oil drilling is a drilling project aimed at discovering hydrocarbons such as oil and natural gas. Drilling plays an irreplaceable and important role in the development of the oil and natural gas industry. The location of oil extraction in the well needs to be located through a positioning device in order to record and measure the actual oil extraction location and facilitate the data collection of extraction.

[0003] In existing oil production operations, there will be errors in the positioning of machines in oil wells, which is prone to shaking and affects the oil positioning measurement.

[0004] The utility model of Chinese patent application number CN202022644364.7 discloses a multifunctional downhole positioning device for oil drilling, including an outer shell, a fixed plate fixedly connected to the top of the outer shell, a suspension rope fixed to the top of the fixed plate, one end of the suspension rope passes through the fixed plate and is fixedly connected to a pull column, the bottom of the pull column is fixedly connected to the inner shell, and the top of the fixed plate is fixedly connected to a driving motor on both sides. The positioning device is provided with a driving motor to rotate the driven gear on the fixed column, and the driven gear rotates the gear rod to push the fixed rod, so that the fixed rod is fixed to the inner wall of the oil well, ensuring the stability of the equipment during measurement and preventing shaking, and the electric push rod pushes the support rod, so that the roller on the support rod contacts the inner wall of the oil well, so that the equipment moves, and the maneuverability of the equipment during measurement is improved.

[0005] However, from the drawings in the specification, it can be seen that the stability of the box is achieved by controlling the movement of the rods on both sides of the box to fit the well wall through the moving mechanism and the positioning mechanism. Since the box is located in the well, it is only supported and stabilized by the rods on both sides of the box, which can easily cause the box to tilt and be unable to limit the front and rear sides of the box, which can easily affect the accuracy of the measurement and the use effect. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a downhole positioning device for an oil drill.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a downhole positioning device for oil drilling, comprising a box, a lifting ring is fixedly connected to the top of the box, partition plates are fixedly connected to the upper and lower sides of the inner cavity of the box, a battery is arranged in the middle of the box, a controller and a rangefinder are arranged at the bottom of the inner cavity of the box, a positioning support mechanism is arranged at the bottom of the battery, and support rods are symmetrically rotatably connected to the top of the four sides of the box;

[0008] One end of the support rod is rotatably connected to a first stabilizing wheel, one side of the support rod is provided with a limiting slide groove, and the middle part of the limiting slide groove is provided with a connecting slider;

[0009] A first motor is arranged at the top of the inner cavity of the box body, and a rotating disk is connected to the output end of the first motor. Gears are symmetrically arranged around the bottom of the rotating disk. A first threaded rod is inserted in the middle of the gear, and a moving block is sleeved in the middle of the first threaded rod. A moving box is fixedly connected to the bottom of the moving block, an insertion rod is inserted at one end of the moving box, and one end of the insertion rod is fixedly connected to a limiting slider, and a spring is arranged on one side of the limiting slider.

[0010] Furthermore, a stabilizing support rod is fixedly connected to the top center position of the top partition plate, one end of the first threaded rod extends to the inside of the stabilizing support rod, the gear is meshed with the bottom wall of the rotating disk, and the first threaded rod is meshed with the moving block.

[0011] Furthermore, the limiting slide groove is matched with the connecting slider, one end of the insert rod is rotatably connected to the connecting slider, and the limiting slider and the spring are both arranged in the middle of the moving box.

[0012] Furthermore, the positioning support mechanism includes a first gear ring arranged on the top of the bottom partition plate, second gear rings are symmetrically arranged around the top of the first gear ring, a limiting block is arranged on the top of the second gear ring, a second threaded rod is inserted in the middle of the second gear ring, and the second gear ring and the second threaded rod are threadedly connected.

[0013] Furthermore, one end of the second threaded rod extends to the outside of the box and is fixedly connected to a stabilizing plate, one side of the stabilizing plate is fixedly connected to a stabilizing rod, and the stabilizing rod and one end of the second threaded rod away from the stabilizing plate are both fixedly connected to a limiting plate.

[0014] Furthermore, second stabilizing wheels are symmetrically arranged around the middle of the first gear ring, the second stabilizing wheels are meshed with the second motor, the first gear ring is meshed with the second gear ring, and the bottom of one of the second stabilizing wheels is connected to the second motor.

[0015] The utility model has the following advantages:

[0016] 1. The utility model first connects the box body with the chain through the lifting ring, so that the box body is lowered into the well, and the four stabilizing plates can be controlled to move to the side away from the box body at the same time through the positioning support mechanism, so that the stabilizing plates fit the well wall, thereby improving the stability of the box body, and the four support rods on the top are combined to control the first stabilizing wheel to fit the well wall, thereby avoiding the box body from tilting and improving the stability of the box body, thereby improving the accuracy of the rangefinder detection and the use effect, and through the extrusion of the spring by the limit slider, the position of the first stabilizing wheel can automatically buffer the change when the well wall diameter changes, thereby improving the stability of the box body and improving the use effect;

[0017] 2. The utility model can also realize simultaneous control by starting the first motor to control multiple insertion rods in sequence to push the support rods, thereby supporting the box body from four directions, improving the stability of the box body moving up and down in the well, and improving the stability of the horizontal movement of the stabilizing plate through the stabilizing rod, and limiting the position of the second gear ring through the limiting block. The stabilizing support rod set on the surface of the top partition plate can improve the stability of the first threaded rod, thereby improving the transmission stability of the rotating disk to the gear and improving the use effect.

[0018] In summary, through the mutual influence of the above-mentioned multiple effects, the box can be supported from four directions by four support rods and a stabilizing plate, thereby improving the stability of the box, preventing the box from tilting, and improving the accuracy of rangefinder detection. At the same time, when the diameter of the well wall changes, the position of the first stabilizing wheel is automatically buffered to improve the stability of the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0023] Figure 3 For this utility model Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0024] Figure 4 This is a schematic diagram of the connection and separation structure of the support rod and the first motor of the utility model;

[0025] Figure 5 For this utility model Figure 2 A schematic diagram of the local enlarged structure at B in the middle;

[0026] Figure 6 This is a schematic diagram of the split structure of the second motor and the stabilizing plate of the utility model;

[0027] In the figure: 1. box body; 2. lifting ring; 3. partition plate; 4. battery; 5. controller; 6. rangefinder; 7. support rod; 8. first stabilizing wheel; 9. limiting slide groove; 10. first motor; 11. rotating disk; 12. gear; 13. first threaded rod; 14. moving box; 15. moving block; 16. plug rod; 17. limiting slider; 18. connecting slider; 19. spring; 20. first gear ring; 21. second stabilizing wheel; 22. second motor; 23. stabilizing plate; 24. stabilizing rod; 25. second threaded rod; 26. second gear ring; 27. limiting disk; 28. limiting block. DETAILED DESCRIPTION

[0028] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part 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.

[0029] Refer to the instruction manual Figure 1-6 , a downhole positioning device for oil drilling, including a box body 1, a lifting ring 2 is fixedly connected to the top of the box body 1, and the box body 1 is conveniently connected to the chain through the lifting ring 2, so that the box body 1 is lowered into the well, the upper and lower sides of the inner cavity of the box body 1 are fixedly connected with partition plates 3, and a battery 4 is arranged in the middle of the box body 1 to improve the internal electrical use time of the box body 1. A controller 5 and a rangefinder 6 are arranged at the bottom of the inner cavity of the box body 1, and a positioning support mechanism is arranged at the bottom of the battery 4. The top of the box body 1 is symmetrically rotatably connected with support rods 7. The rangefinder 6 can detect the downhole depth of the box body 1, and the detection value is transmitted to the handheld display terminal in real time through the controller 5, and the position of the box body 1 can be located through the positioning support mechanism, thereby improving the stability of the box body 1;

[0030] One end of the support rod 7 is rotatably connected to the first stabilizing wheel 8, and a limiting slide groove 9 is provided on one side of the support rod 7. A connecting slider 18 is provided in the middle of the limiting slide groove 9. The first stabilizing wheel 8 is driven to move by the rotation of the support rod 7, so that the first stabilizing wheel 8 can be fitted with the well wall, thereby improving the stability of the box body 1 moving downward;

[0031] A first motor 10 is arranged at the top of the inner cavity of the box body 1, and a rotating disk 11 is connected to the output end of the first motor 10. Gears 12 are symmetrically arranged around the bottom of the rotating disk 11. A first threaded rod 13 is inserted in the middle of the gear 12. A moving block 15 is sleeved in the middle of the first threaded rod 13. A moving box 14 is fixedly connected to the bottom of the moving block 15. An insertion rod 16 is inserted at one end of the moving box 14. One end of the insertion rod 16 is fixedly connected to a limited slider 17. A spring 19 is arranged on one side of the limited slider 17. By starting the first motor 10 to control the rotating disk 11 to drive multiple gears 12 to rotate simultaneously, it can make The first threaded rod 13 rotates, thereby controlling the moving block 15 to drive the moving box 14 to move horizontally, and controlling one end of the insertion rod 16 to extend to push the support rod 7 through the connecting slider 18, and the connecting slider 18 slides inside the limiting slide groove 9, so that the support rod 7 can be easily rotated, so as to facilitate the adaptation to wellheads of different diameters for use, and the limiting slider 17 is driven by the insertion rod 16 to push the spring 19. During the downward movement, the first stabilizing wheel 8 can be squeezed to make the support rod 7 squeeze the insertion rod 16 in turn, which plays a buffering role, avoids damage to the well wall, and improves the use effect.

[0032] As attached Figure 2 , 3 As shown, a stabilizing support rod is fixedly connected to the top center position of the top partition plate 3, one end of the first threaded rod 13 extends to the inside of the stabilizing support rod, the gear 12 is meshed with the bottom wall of the rotating disk 11, and the first threaded rod 13 is meshed with the moving block 15. The stability of the first threaded rod 13 is improved by the stabilizing support rod, and the rotation of the first threaded rod 13 controls the horizontal movement of the moving block 15.

[0033] As attached Figure 2-4 As shown, the limiting slide groove 9 is adapted to the connecting slider 18, one end of the insert rod 16 is rotatably connected to the connecting slider 18, the limiting slider 17 and the spring 19 are both arranged in the middle of the moving box 14, and the connecting slider 18 is pushed by the insert rod 16 while sliding in the limiting slide groove 9, and the spring 19 is squeezed by the limiting slider 17 to play a buffering role.

[0034] As attached Figure 2 , 5As shown in , 6, the positioning support mechanism includes a first gear ring 20 arranged on the top of the bottom partition plate 3, second gear rings 26 are symmetrically arranged around the top of the first gear ring 20, a limiting block 28 is arranged on the top of the second gear ring 26, a second threaded rod 25 is inserted in the middle of the second gear ring 26, and the second gear ring 26 and the second threaded rod 25 are threadedly connected. The rotation of the first gear ring 20 controls the simultaneous rotation of multiple second gear rings 26, so that the second threaded rod 25 pushes the stabilizing plate 23, so that the second threaded rod 25 moves horizontally, and the position of the second gear ring 26 is limited by the limiting block 28, so as to improve the driving transmission effect.

[0035] As attached Figure 2 , 5 As shown in Figure 6, one end of the second threaded rod 25 extends to the outside of the box body 1 and is fixedly connected to the stabilizing plate 23, and a stabilizing rod 24 is fixedly connected to one side of the stabilizing plate 23. The stabilizing rod 24 and the end of the second threaded rod 25 away from the stabilizing plate 23 are both fixedly connected to a limiting plate 27. The stabilizing plate 23 can be limited by the stabilizing rod 24, so that the second threaded rod 25 can only move horizontally but not rotate, and the moving distance of the second threaded rod 25 and the stabilizing rod 24 is limited by the limiting plate 27. By controlling the stabilizing plate 23 to squeeze the well wall, the position of the box body 1 can be fixed, which is convenient for the rangefinder 6 to measure accurately and avoid affecting the positioning accuracy due to shaking.

[0036] As attached Figure 2 , 5 As shown in FIG. 6 , second stabilizing wheels 21 are symmetrically arranged around the middle of the first gear ring 20, the second stabilizing wheels 21 are meshed with the second motor 22, the first gear ring 20 is meshed with the second gear ring 26, and the bottom of one of the second stabilizing wheels 21 is connected to the second motor 22. By starting the first gear ring 20 to control the rotation of the second stabilizing wheel 21, the second motor 22 can be rotated, and the stability of the movement of the first gear ring 20 can be improved by multiple second stabilizing wheels 21.

[0037] The use process of the utility model is as follows: when in use, it is only necessary to connect the chain with the lifting ring 2, and lower the box 1 into the well, and send instructions to the controller 5 through the external remote control to control the rangefinder 6 to start, so as to monitor the descending depth of the box 1 in real time;

[0038] When the box body 1 is completely inserted into the well, the first motor 10 is started to control the support rods 7 to rotate in sequence, so that the first stabilizing wheel 8 fits the well wall, which can improve the stability of the box body 1 moving downward;

[0039] When the box 1 is moved to a fixed position for positioning, the second motor 22 is started to control the stabilizing plate 23 to move to the side away from the box 1 in sequence until the stabilizing plate 23 fits against the well wall, which can improve the stability of the box 1. At this time, the distance measurement detection is performed by the rangefinder 6, which can improve the accuracy of the distance measurement, thereby achieving the accuracy of positioning and improving the use effect.

[0040] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

[0041] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of description and are not intended to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as within the scope of implementation of the present invention without substantially changing the technical content.

Claims

1. A downhole positioning device for oil drilling, comprising a housing (1), characterized in that: The top of the box (1) is fixedly connected to a lifting ring (2); the upper and lower sides of the inner cavity of the box (1) are fixedly connected to partition plates (3); a storage battery (4) is arranged in the middle of the box (1); a controller (5) and a rangefinder (6) are arranged at the bottom of the inner cavity of the box (1); a positioning support mechanism is arranged at the bottom of the storage battery (4); and support rods (7) are symmetrically rotatably connected to the top of the four sides of the box (1); One end of the support rod (7) is rotatably connected to a first stabilizing wheel (8), one side of the support rod (7) is provided with a limiting slide groove (9), and a connecting slider (18) is provided in the middle of the limiting slide groove (9); A first motor (10) is arranged at the top of the inner cavity of the box body (1), the output end of the first motor (10) is connected to a rotating disk (11), gears (12) are symmetrically arranged around the bottom of the rotating disk (11), a first threaded rod (13) is inserted in the middle of the gear (12), a moving block (15) is sleeved in the middle of the first threaded rod (13), the bottom of the moving block (15) is fixedly connected to a moving box (14), one end of the moving box (14) is inserted with an insertion rod (16), one end of the insertion rod (16) is fixedly connected to a limiting slider (17), and a spring (19) is arranged on one side of the limiting slider (17).

2. A downhole positioning device for oil drilling according to claim 1, characterized in that: A stabilizing support rod is fixedly connected to the center of the top of the partition plate (3), one end of the first threaded rod (13) extends to the inside of the stabilizing support rod, the gear (12) is meshed with the bottom wall of the rotating disk (11), and the first threaded rod (13) is meshed with the moving block (15).

3. A downhole positioning device for oil drilling according to claim 1, characterized in that: The limiting slide groove (9) is matched with the connecting slide block (18), one end of the insert rod (16) is rotatably connected to the connecting slide block (18), and the limiting slide block (17) and the spring (19) are both arranged in the middle of the moving box (14).

4. A downhole positioning device for oil drilling according to claim 1, characterized in that: The positioning support mechanism comprises a first toothed ring (20) arranged on the top of the partition plate (3) at the bottom, second toothed rings (26) are symmetrically arranged around the top of the first toothed ring (20), a limiting block (28) is arranged on the top of the second toothed ring (26), a second threaded rod (25) is inserted in the middle of the second toothed ring (26), and the second toothed ring (26) and the second threaded rod (25) are threadedly connected.

5. A downhole positioning device for oil drilling as claimed in claim 4, characterized in that: One end of the second threaded rod (25) extends to the outside of the box body (1) and is fixedly connected to a stabilizing plate (23); one side of the stabilizing plate (23) is fixedly connected to a stabilizing rod (24); and the stabilizing rod (24) and one end of the second threaded rod (25) away from the stabilizing plate (23) are both fixedly connected to a limiting plate (27).

6. A downhole positioning device for oil drilling as claimed in claim 4, characterized in that: Second stabilizing wheels (21) are symmetrically arranged around the middle of the first gear ring (20), the second stabilizing wheels (21) are meshed with the second motor (22), the first gear ring (20) is meshed with the second gear ring (26), and the bottom of one of the second stabilizing wheels (21) is connected to the second motor (22).

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