Petroleum drill rod surface rust removal device

Abstract

The utility model discloses a petroleum drill rod surface rust removal device, which relates to the field of petroleum drill rods and comprises a first rod piece, a second rod piece is rotatably mounted at one end of the first rod piece, adjusting assemblies are mounted on the first rod piece and the second rod piece, and the adjusting assemblies are used for adjusting the diameters of the adjusting assemblies to adapt to drill rods with different inner diameters. The adjusting assembly comprises a plurality of first polishing parts and second polishing parts, the first polishing parts and the second polishing parts are arranged on the outer surface of the first rod piece in a sliding and sleeving mode, and each of the first polishing parts and the second polishing parts comprises a first moving ring. The diameter of the device can be automatically changed when the device moves in a petroleum drill rod even if the device encounters steps or pipelines with different diameters, it can be guaranteed that force applied to all positions of the inner surfaces of the pipelines is almost the same and cannot be blocked by the steps, and an operator only needs to control the device to move back and forth.

Description

Technical Field

[0001] The utility model relates to the field of oil drill pipes, in particular to a device for removing rust from the surface of oil drill pipes. Background Art

[0002] The oil drill pipe is an essential component in the oil drilling process. Its tail has threads and is used to connect the surface equipment of the drilling rig and the drilling and grinding equipment or bottom hole device at the bottom of the drilling. Its basic functions include tripping the drill bit, applying drilling pressure, transmitting power, conveying drilling fluid, and performing special operations such as squeezing cement and handling underground accidents.

[0003] The main function of oil drill pipe is to keep the wellbore stable and raise, lower or rotate the bottom hole device together with the drill bit. The drill pipe must be able to withstand huge internal and external pressure, twisting, bending and vibration loads during the drilling process, and have a certain strength, rigidity and stability.

[0004] Oil drill pipes are available in both hollow and solid types, each with its own characteristics and uses.

[0005] The inner cavity of the hollow drill pipe is hollow. This design allows circulating mud to be introduced through the wellhead to cool the drill bit and suppress rock cuttings. It is particularly suitable for large-diameter wells and deep well mining. Its structure is usually more complex than that of a solid drill pipe, requiring high-tech materials and advanced manufacturing technology support. It is usually made of wear-resistant materials and can withstand greater tension, compression, and torque, so it is more suitable for complex formations in deep wells.

[0006] Drill pipes are prone to rust after long-term use. This is because the drill pipes will constantly come into contact with various underground chemicals and formations during use, which may cause corrosion to the surface of the drill pipes. In addition, the drill pipes will also be affected by wear and stress concentration during operation, which will also accelerate the rust process.

[0007] Especially in the marine environment, drill pipes are more susceptible to corrosion because seawater contains a large amount of sodium chloride and other chemicals, which can cause corrosion to the drill pipe. At the same time, the humidity and salt spray in the marine environment can also accelerate the corrosion process of the drill pipe.

[0008] Therefore, it is necessary to frequently remove rust and maintain the oil drill pipe to prevent the rust from getting worse, which may cause damage or safety accidents during use. However, most of the existing rust removal devices can only clean the outer surface of the oil drill pipe, and lack the ability to remove rust on the inner surface. In addition, the traditional rust removal device cannot cope with drill pipes with different inner diameters when in use. When there are steps inside the drill pipe, the step position may be unable to be cleaned, and even the rust removal device may be damaged. In addition, the rust removal device has a single function and is cumbersome to operate.

[0009] Therefore, it is necessary to propose a device for removing rust from the surface of a petroleum drill pipe to solve the above problems. Utility Model Content

[0010] The utility model aims to provide a device for removing rust from the surface of a petroleum drill pipe, so as to solve the above-mentioned problem of lacking the ability to deal with the inner wall of the drill pipe and being unable to adapt to a variety of inner diameters.

[0011] To achieve the above object, the utility model provides the following technical solution: a device for removing rust from the surface of a petroleum drill pipe, comprising a first rod, a second rod being rotatably mounted on one end of the first rod, an adjustment assembly being mounted on the first rod and the second rod, the adjustment assembly being used to adjust its own diameter to adapt to drill pipes with different inner diameters;

[0012] The adjusting assembly comprises a plurality of first grinding parts and a second grinding part, wherein the first grinding part and the second grinding part are slidably sleeved on the outer surface of the first rod, the first grinding part and the second grinding part both comprise a first moving ring, a second moving ring is provided on one side of the first moving ring, the first moving ring and the second moving ring are both slidably sleeved on the outer surface of the first rod, a plurality of first supporting arms distributed in an annular shape are rotatably mounted on the outer ring of the first moving ring, a plurality of second supporting arms distributed in an annular shape are rotatably mounted on the outer ring of the second moving ring, a plurality of supporting plates are provided in the middle of the first moving ring and the second moving ring, an end of the first supporting arm away from the first moving ring is rotatably mounted on one end of the supporting plate, and an end of the second supporting arm away from the second moving ring is rotatably mounted on the other end of the supporting plate;

[0013] A driving assembly is installed inside the second rod, and the driving assembly is used to drive the first rod to rotate.

[0014] Preferably, the adjustment assembly also includes a rotating ring, which is sleeved on the outer surface of the second rod through threaded cooperation, a movable plate is slidably sleeved on the outer surface of one end of the first rod close to the second rod, a rotating plate is rotatably installed on the side of the movable plate away from the second rod, the rotating plate is slidably sleeved on the outer surface of the first rod, and a first spring is sleeved on the outer surface of the second rod, the two ends of the first spring respectively resist the surfaces of the movable plate and the rotating ring, and a second spring is fixedly installed between the first movable ring and the second movable ring.

[0015] Preferably, a first threaded hole is provided in the middle of one end of the first rod away from the second rod, an extension rod is provided on the side of the first rod away from the second rod, a second threaded hole is provided in the middle of one end of the extension rod, a first screw is fixedly installed in the middle of one side of the extension rod away from the second threaded hole, and the first screw is installed inside the first threaded hole through threaded fitting.

[0016] Preferably, a blocking head component is provided on a side of the extension rod away from the first rod, a second screw is fixedly mounted on the middle of the blocking head component, and the second screw is mounted inside the second threaded hole by threaded engagement.

[0017] Preferably, a grinding assembly is detachably mounted on the surface of the support plate.

[0018] Preferably, the driving assembly is a motor, and the driving end of the motor extends to the outside of the second rod and is fixedly mounted on the end of the first rod.

[0019] Preferably, a rubber handle is fixedly mounted on a side of the second rod away from the first rod, and wires and cables are fixedly mounted inside the rubber handle.

[0020] Preferably, the cross-sections of the first rod and the extension rod are regular hexagonal, and the cross-section of the second rod is circular.

[0021] Technical effects and advantages of the utility model:

[0022] The device is provided with a first grinding component and a second grinding component, so that when the device moves inside the oil drill pipe, even if it encounters a step or a pipe with a different diameter, the diameter can be changed autonomously, and the force applied to each part of the inner surface of the pipe can be ensured to be almost the same, and will not be blocked by the step. The operator only needs to control the device to move back and forth;

[0023] The device only needs to install an appropriate number of additional extension rods to increase the overall length of the device, thereby making it possible to carry more first grinding components and second grinding components, install more rust removal components, or install components such as grinding and cleaning cloth to perform multi-stage work at the same time, so that the device can change the components thereon according to the actual situation of the oil drill pipe, can adapt to oil drill pipes of various inner diameters, and can perform rust removal, grinding, polishing, cleaning and other work at the same time, and is simple to operate and practical in effect;

[0024] When the device is not in use, the rotating ring can be screwed to the initial position. At this time, the support plate is attached to the surface of the first rod, and the diameters of the first grinding component and the second grinding component are minimized, making it easy to store them, reducing the floor space occupied by the first grinding component and the second grinding component, reducing the possibility of damage, and facilitating storage or transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The utility model is a structural schematic diagram of a device for removing rust from the surface of a petroleum drill pipe.

[0026] Figure 2 The utility model is a structural schematic diagram of the oil drill pipe surface rust removal device after the extension rod is installed.

[0027] Figure 3 It is a schematic diagram of the connection structure of the first rod and the extension rod in the utility model.

[0028] Figure 4 It is a structural schematic diagram of the first grinding component in the utility model.

[0029] In the figure: 1. first rod; 2. first grinding component; 3. second grinding component; 4. extension rod; 5. blocking head component; 6. wires and cables; 11. second rod; 12. rubber handle; 13. rotating ring; 14. first spring; 15. moving plate; 16. rotating plate; 17. motor; 18. first threaded hole; 21. first moving ring; 22. second moving ring; 23. first support arm; 24. second support arm; 25. support plate; 26. second spring; 27. grinding assembly; 41. second threaded hole; 42. first screw; 51. second screw. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] The utility model provides Figure 1 - Figure 4The device for removing rust from the surface of a petroleum drill pipe shown in the figure comprises a first rod 1, a second rod 11 is rotatably mounted on one end of the first rod 1, a driving assembly is mounted inside the second rod 11, the driving assembly is a motor 17, an adjustment assembly is mounted on the first rod 1 and the second rod 11, the adjustment assembly is used to adjust its own diameter to adapt to drill pipes with different inner diameters, the adjustment assembly comprises a plurality of first grinding components 2 and second grinding components 3, the first grinding components 2 and the second grinding components 3 both comprise a first moving ring 21, a second moving ring 22 is arranged on one side of the first moving ring 21, and the first moving ring 21 and the second moving ring 22 are both slidably sleeved on the outer surface of the first rod 1 A plurality of first support arms 23 distributed in an annular shape are rotatably mounted on the outer ring of the first movable ring 21, a plurality of second support arms 24 distributed in an annular shape are rotatably mounted on the outer ring of the second movable ring 22, a plurality of support plates 25 distributed in an annular shape are provided in the middle position of the first movable ring 21 and the second movable ring 22, one end of the first support arm 23 away from the first movable ring 21 is rotatably mounted on one end of the support plate 25, one end of the second support arm 24 away from the second movable ring 22 is rotatably mounted on the other end of the support plate 25, a second spring 26 is fixedly mounted between the first movable ring 21 and the second movable ring 22, and a grinding assembly 27 is detachably mounted on the surface of the support plate 25.

[0032] When the support plate 25 is subjected to axial force, the support plate 25 pushes the second support arm 24 and the first support arm 23 to move to both sides, thereby reducing the radius of the circle formed by the multiple support plates 25, and the circle can pass through the inside of the oil drill pipe with a smaller diameter. When the first movable ring 21 and the second movable ring 22 are subjected to extrusion force, the first movable ring 21 and the second movable ring 22 approach each other, thereby driving the first support arm 23 and the second support arm 24 to rotate, and driving the support plate 25 to rise, so that the first grinding component 2 and the second grinding component 3 can adapt to oil drill pipes with more diameters, and ensure that the grinding assembly 27 of the device can fit closely to the inner surface of the oil drill pipe when in use. When the first movable ring 21 and the second movable ring 22 are not subjected to force, the second spring 26 will push them to both sides, thereby reducing the height of the support plate 25 to the minimum, and the diameter generated by the first grinding component 2 and the second grinding component 3 is the smallest.

[0033] It should be noted that, in actual use, the grinding assembly 27 on the surface of the support plate 25 corresponding to the first grinding component 2 and the second grinding component 3 can be installed with different types of components, and wire brushes and sandpaper of different mesh sizes can be installed respectively, so that rust removal and polishing can be performed simultaneously during use.

[0034] A motor 17 is fixedly installed in the middle position inside the second rod 11, and the driving end of the motor 17 extends to the outside of the second rod 11 and is fixedly installed on the end of the first rod 1. A rotating ring 13 is provided on one side of the outer surface of the second rod 11 through a threaded fitting sleeve, and a moving plate 15 is slidably sleeved on the outer surface of one end of the first rod 1 close to the second rod 11, and a rotating plate 16 is rotatably installed on the side of the moving plate 15 away from the second rod 11. The rotating plate 16 is slidably sleeved on the outer surface of the first rod 1, and a first spring 14 is sleeved on the outer surface of the second rod 11. The two ends of the first spring 14 respectively press against the surfaces of the moving plate 15 and the rotating ring 13, and a rubber handle 12 is fixedly installed on the side of the second rod 11 away from the first rod 1, and an electric wire and cable 6 is fixedly clamped inside the rubber handle 12.

[0035] When in use, first rotate the rotating ring 13 to the initial position, at which time the first spring 14 will not generate thrust, and then the first grinding component 2 and the second grinding component 3 are in the minimum diameter state, then hold the rubber handle 12 to extend the first grinding component 2 and the second grinding component 3 into the interior of the oil drill pipe, rotate the rotating ring 13 so that it presses the first spring 14, and at this time the first spring 14 will push the moving plate 15, and the moving plate 15 drives the rotating plate 16 to apply axial force to the first grinding component 2 and the second grinding component 3, so that the first moving ring 21 and the second The moving rings 22 are close to each other, and at this time, multiple support plates 25 are all in contact with the inner surface of the oil drill pipe. At this time, the control motor 17 is turned on, and the motor 17 will drive the first rod 1 to rotate, and then drive the first grinding component 2 and the second grinding component 3 carried thereon to rotate. When waiting for it to rotate stably, release the rubber handle 12 to hold the wire cable 6, and move the entire device deeper into the oil drill pipe. Because when the oil drill pipe is stationary, the dynamic friction generated by the first support arm 23 is smaller than the static friction, so it is easier to make it penetrate into the oil drill pipe when it rotates stably.

[0036] It should be noted that the elastic stiffness of the first spring 14 is much greater than the elastic stiffness of the second spring 26, so that the support plate 25 can better resist the inner surface of the oil drill pipe during operation.

[0037] A first threaded hole 18 is provided in the middle of one end of the first rod 1 away from the second rod 11, and an extension rod 4 is provided on the side of the first rod 1 away from the second rod 11. The cross-sections of the first rod 1 and the extension rod 4 are regular hexagons, and the cross-section of the second rod 11 is circular. A second threaded hole 41 is provided in the middle of one end of the extension rod 4, and a first screw 42 is fixedly installed in the middle of one side of the extension rod 4 away from the second threaded hole 41. The first screw 42 is installed in the inside of the first threaded hole 18 through threaded fitting.

[0038] As another embodiment of the utility model, when the inside of the oil drill pipe is relatively dirty or the degree of rust is high, and a large number of rust removal components are needed to work, it is only necessary to install an appropriate number of extension rods 4 to increase the overall length of the device, so that the number of first grinding components 2 and second grinding components 3 that can be carried thereon is greater, and more rust removal components can be installed, or components such as grinding and cleaning cloths can be installed to perform multi-stage work at the same time, so that the device can change the components thereon according to the actual situation of the oil drill pipe, can adapt to various oil drill pipes, and can perform rust removal, grinding, polishing, cleaning and other tasks at the same time, with simple operation and practical effect.

[0039] A blocking head component 5 is provided on the side of the extension rod 4 away from the first rod 1, and a second screw 51 is fixedly installed in the middle of the blocking head component 5. The second screw 51 is installed inside the second threaded hole 41 through threaded cooperation. The blocking head component 5 is used to provide the reaction force required by the device and limit the first grinding component 2 and the second grinding component 3 thereon to prevent falling off.

[0040] Working principle: first rotate the rotating ring 13 to the initial position, at which time the first spring 14 will not generate thrust, and then the first grinding component 2 and the second grinding component 3 are in the minimum diameter state, then hold the rubber handle 12 to extend the first grinding component 2 and the second grinding component 3 into the interior of the oil drill pipe, rotate the rotating ring 13 so that it presses the first spring 14, and at this time the first spring 14 will push the moving plate 15, and the moving plate 15 drives the rotating plate 16 to apply axial force to the first grinding component 2 and the second grinding component 3, so that the first moving ring 21 and the second The moving rings 22 are close to each other, and at this time, multiple support plates 25 are all in contact with the inner surface of the oil drill pipe. At this time, the control motor 17 is turned on, and the motor 17 will drive the first rod 1 to rotate, and then drive the first grinding component 2 and the second grinding component 3 carried thereon to rotate. When waiting for it to rotate stably, release the rubber handle 12 to hold the wire cable 6, and move the entire device deeper into the oil drill pipe. Because when the oil drill pipe is stationary, the dynamic friction generated by the first support arm 23 is smaller than the static friction, so it is easier to make it penetrate into the oil drill pipe when it rotates stably.

[0041] When the support plate 25 is subjected to axial force, the support plate 25 pushes the second support arm 24 and the first support arm 23 to move to both sides, thereby reducing the radius of the circle formed by the multiple support plates 25, and the circle can pass through the inside of the oil drill pipe with a smaller diameter. When the first movable ring 21 and the second movable ring 22 are subjected to extrusion force, the first movable ring 21 and the second movable ring 22 approach each other, thereby driving the first support arm 23 and the second support arm 24 to rotate, and driving the support plate 25 to rise, so that the first grinding component 2 and the second grinding component 3 can adapt to oil drill pipes with more diameters, and ensure that the grinding assembly 27 of the device can fit closely to the inner surface of the oil drill pipe when in use. When the first movable ring 21 and the second movable ring 22 are not subjected to force, the second spring 26 will push them to both sides, thereby reducing the height of the support plate 25 to the minimum, and the diameter generated by the first grinding component 2 and the second grinding component 3 is the smallest.

[0042] Hold the electric wire and cable 6 and move it repeatedly inside the oil drill pipe until the inner surface of the oil drill pipe is cleaned to the required standard, then shut down the device and take it out to complete the rust removal of the inner surface of the oil drill pipe.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for removing rust from the surface of a petroleum drill pipe, comprising a first rod (1), characterized in that: A second rod (11) is rotatably mounted on one end of the first rod (1), and adjustment components are mounted on the first rod (1) and the second rod (11), the adjustment components being used to adjust their own diameters to adapt to drill rods with different inner diameters; The adjustment assembly comprises a plurality of first grinding components (2) and second grinding components (3), the first grinding components (2) and the second grinding components (3) are slidably mounted on the outer surface of the first rod (1), the first grinding components (2) and the second grinding components (3) both comprise a first moving ring (21), a second moving ring (22) is provided on one side of the first moving ring (21), the first moving ring (21) and the second moving ring (22) are both slidably mounted on the outer surface of the first rod (1), a plurality of first support arms (23) distributed in an annular shape are rotatably mounted on the outer ring of the first moving ring (21), a plurality of second support arms (24) distributed in an annular shape are rotatably mounted on the outer ring of the second moving ring (22), a plurality of support plates (25) are provided at the middle positions of the first moving ring (21) and the second moving ring (22), one end of the first support arm (23) away from the first moving ring (21) is rotatably mounted on one end of the support plate (25), and one end of the second support arm (24) away from the second moving ring (22) is rotatably mounted on the other end of the support plate (25); A driving assembly is installed inside the second rod (11), and the driving assembly is used to drive the first rod (1) to rotate.

2. A device for removing rust from the surface of a petroleum drill pipe according to claim 1, characterized in that: The adjustment assembly further comprises a rotating ring (13), the rotating ring (13) being sleeved on the outer surface of the second rod (11) by means of threaded fitting; a moving plate (15) is slidably sleeved on the outer surface of one end of the first rod (1) close to the second rod (11); a rotating plate (16) is rotatably mounted on the side of the moving plate (15) away from the second rod (11); the rotating plate (16) is slidably sleeved on the outer surface of the first rod (1); a first spring (14) is sleeved on the outer surface of the second rod (11); two ends of the first spring (14) respectively abut against the surfaces of the moving plate (15) and the rotating ring (13); and a second spring (26) is fixedly mounted between the first moving ring (21) and the second moving ring (22).

3. The rust removal device for the surface of a petroleum drill pipe according to claim 1, characterized in that: A first threaded hole (18) is provided in the middle of one end of the first rod (1) away from the second rod (11); an extension rod (4) is provided on the side of the first rod (1) away from the second rod (11); a second threaded hole (41) is provided in the middle of one end of the extension rod (4); a first screw rod (42) is fixedly mounted in the middle of the side of the extension rod (4) away from the second threaded hole (41); the first screw rod (42) is mounted inside the first threaded hole (18) by threaded engagement.

4. A device for removing rust from the surface of a petroleum drill pipe according to claim 3, characterized in that: A blocking head component (5) is provided on a side of the extension rod (4) away from the first rod (1), a second screw rod (51) is fixedly mounted in the middle of the blocking head component (5), and the second screw rod (51) is mounted inside the second threaded hole (41) by threaded engagement.

5. The device for removing rust from the surface of a petroleum drill pipe according to claim 2, characterized in that: A grinding assembly (27) is detachably mounted on the surface of the support plate (25).

6. The device for removing rust from the surface of a petroleum drill pipe according to claim 1, characterized in that: The driving component is a motor (17), the driving end of the motor (17) extending to the outside of the second rod (11) and fixedly mounted on the end of the first rod (1).

7. The device for removing rust from the surface of a petroleum drill pipe according to claim 1, characterized in that: A rubber handle (12) is fixedly mounted on a side of the second rod (11) away from the first rod (1), and an electric wire and cable (6) is fixedly mounted inside the rubber handle (12).

8. The device for removing rust from the surface of a petroleum drill pipe according to claim 1, characterized in that: The cross-sections of the first rod (1) and the extended rod (4) are regular hexagonal, and the cross-section of the second rod (11) is circular.

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