A corrosion-resistant anti-drop drill collar

Abstract

The utility model relates to the technical field of drill collar drop prevention, and discloses a corrosion-resistant drill collar drop prevention, comprising a hollow threaded rod, the bottom of the hollow threaded rod is fixedly connected to a drill rod, the outer wall of the round rod is fixedly connected to a plurality of circular rings, the outer walls of the plurality of circular rings are fixedly connected to blades, the bottom of the water tank is connected to a water pump, the output end of the water pump is fixedly connected to a water storage pipe, the bottom of the water storage pipe is fixedly connected to a plurality of water spray pipes, and the bottom of the threaded cover is provided with water outlet grooves around, and the water outlet grooves are connected to the water spray pipes. In the utility model, through the cooperation between the hollow threaded rod, the drill rod and the blade, the internal dredging of the device can be achieved to prevent blockage and cause the drill collar to drop, and through the cooperation between the water pump, the water spray pipe and the drill rod, the device can be cooled to avoid corrosion at high temperatures, thereby improving the practicality of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of drill collar anti-dropping, in particular to a corrosion-resistant drill collar anti-dropping. Background Art

[0002] Drill collar refers to one of the tools used to drill underground rocks during drilling operations. However, during use, a large amount of rock cuttings are easily accumulated inside the drill pipe due to long-term drilling underground, and the high temperature generated during the drilling process is prone to corrosion, causing casualties and damage to the drill collar. A corrosion-resistant and anti-drop drill collar is needed.

[0003] Corrosion-resistant anti-drop drill collars refer to the use of corrosion-resistant materials and special coatings or surface treatments to reduce friction and adhesion when in contact with the well wall, which can extend the service life and performance of the corrosion-resistant anti-drop drill collars while reducing maintenance costs and drilling risks.

[0004] The corrosion-resistant and anti-drop drill collars currently on the market require chemical treatment of the outer wall of the drill collar or replacement of corrosion-resistant materials when in use, which increases the overall time and cost, increases the economic cost of the device, and reduces the practicality of the device. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a corrosion-resistant and anti-drop drill collar, aiming to improve the problem of corrosion and drop-off of drill collars in the prior art during long-term use.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a corrosion-resistant anti-drop drill collar, comprising a hollow threaded rod, the bottom of the hollow threaded rod is fixedly connected to the drill rod, the top of the hollow threaded rod is fixedly connected to a fixed block, the left side of the inner wall of the fixed block is slidably connected to a movable rod, a spring is fixedly connected between two adjacent movable rods, a threaded cover is fixedly connected to the top of the fixed block, both of the two movable rods pass through the threaded cover, the top of the inner wall of the hollow threaded rod is fixedly connected to a motor, the output end of the motor is fixedly connected to a round rod, the outer wall of the round rod is fixedly connected to a plurality of circular rings, and a plurality of blades are fixedly connected around the outer walls of the plurality of circular rings, and the inner wall of the threaded cover is provided with a dredging mechanism, which dredges and cleans the inside of the drill collar to prevent the inside of the device from falling off due to excessive rock cuttings.

[0007] As a further description of the above technical solution:

[0008] The dredging mechanism includes a water injection pipe, which is connected to the inner wall of the threaded cover. The bottom of the water injection pipe passes through the threaded cover and is fixedly connected to a water tank. The bottom of the water tank is connected to a water pump. The output end of the water pump is fixedly connected to a water storage pipe. The bottom of the water storage pipe is fixedly connected to a plurality of water spray pipes. Water outlet grooves are provided around the bottom of the threaded cover, and the water outlet grooves are connected to the water spray pipes.

[0009] As a further description of the above technical solution:

[0010] A dust cover is rotatably connected to the top of the water injection pipe, and a drill bit is arranged at the bottom of the drill rod.

[0011] As a further description of the above technical solution:

[0012] A clamping block is fixedly connected to the top of the drill bit, a clamping slot is provided at the bottom of the drill rod, and the clamping block is clamped and connected to the clamping slot.

[0013] As a further description of the above technical solution:

[0014] A controller is fixedly connected to the top of the outer wall of the threaded cover, and the controller is electrically connected to the motor and the water pump respectively.

[0015] As a further description of the above technical solution:

[0016] The outer side of the controller is fixedly connected with a shell, and the outer side of the shell is rotatably connected with a shield.

[0017] As a further description of the above technical solution:

[0018] A suction cup is fixedly connected to the left side of the outer wall of the threaded cover.

[0019] As a further description of the above technical solution:

[0020] A handle is fixedly connected to the outer wall of the suction cup, and a sheath is fixedly connected to the outer wall of the handle.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by starting the motor, the round rod will be driven to rotate, and the rotation of the round rod will drive the blade on the circular ring to rotate, so that the rock cuttings generated inside the drill rod can be crushed into components, thereby facilitating the cleaning of the rock cuttings inside the drill rod and achieving the effect of unblocking the inside of the drill rod. By pressing the movable rod at the same time, the spring will contract, which can facilitate the removal of the threaded cover from the hollow threaded rod, thereby improving the practicality of the device.

[0023] 2. In the utility model, by injecting coolant into the water injection pipe, the coolant will be centrally stored in the water tank. Through the pressure of the water pump, the coolant will flow into the water spray pipe through the water storage pipe, and then sprayed on various parts inside the drill pipe. It can avoid corrosion to the inside of the drill pipe when the drill pipe generates high temperature during long-term operation, thereby improving the economy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of a corrosion-resistant and anti-drop drill collar proposed by the utility model;

[0025] Figure 2 A schematic diagram of a corrosion-resistant and anti-drop drill collar dredging mechanism proposed by the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of a corrosion-resistant drill collar-proof blade proposed by the utility model;

[0027] Figure 4 The utility model is a schematic diagram of a corrosion-resistant threaded cover for preventing drill collars from falling off.

[0028] Legend:

[0029] 1. Hollow threaded rod; 2. Unclogging mechanism; 201. Water injection pipe; 202. Water tank; 203. Water pump; 204. Water storage pipe; 205. Water spray pipe; 3. Movable rod; 4. Spring; 5. Threaded cover; 6. Drill rod; 7. Motor; 8. Round rod; 9. Ring; 10. Blade; 11. Drill bit; 12. Block; 13. Dust cover; 14. Controller; 15. Housing; 16. Protective cover; 17. Slot; 18. Water outlet; 19. Suction cup; 20. Handle; 21. Sheath; 22. Fixing block. 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] Reference Figure 1 , Figure 2 and Figure 3The utility model provides an embodiment: a corrosion-resistant anti-drop drill collar, comprising a hollow threaded rod 1, a drill rod 6 is fixedly connected to the bottom of the hollow threaded rod 1, a fixed block 22 is fixedly connected to the top of the hollow threaded rod 1, a movable rod 3 is slidably connected to the left side of the inner wall of the fixed block 22, a spring 4 is fixedly connected between the two adjacent movable rods 3, a threaded cover 5 is fixedly connected to the top of the fixed block 22, and the two movable rods 3 both penetrate the threaded cover 5, a motor 7 is fixedly connected to the top of the inner wall of the hollow threaded rod 1, a round rod 8 is fixedly connected to the output end of the motor 7, a plurality of circular rings 9 are fixedly connected to the outer wall of the circular rod 8, and a plurality of blades 10 are fixedly connected to the outer walls of the plurality of circular rings 9, and a dredging mechanism 2 is arranged on the inner wall of the threaded cover 5, and the dredging mechanism 2 dredges and cleans the inside of the drill collar to prevent the internal rock cuttings of the device from falling off due to excessive weight;

[0032] Specifically, by starting the motor 7, the round rod 8 will be driven to rotate, and the rotation of the round rod 8 will drive the blade 10 on the ring 9 to rotate, so that the rock chips generated inside the drill rod 6 can be crushed into components, thereby facilitating the cleaning of the rock chips inside the drill rod 6 and achieving the effect of unblocking the inside of the drill rod 6. By pressing the movable rod 3 at the same time, the spring 4 will contract, which can facilitate the removal of the threaded cover 5 from the outside of the hollow threaded rod 1, thereby improving the practicability of the device.

[0033] Reference Figure 1 , Figure 2 and Figure 3 The dredging mechanism 2 includes a water injection pipe 201, which is connected to the inner wall of the threaded cover 5. The bottom of the water injection pipe 201 passes through the threaded cover 5 and is fixedly connected to a water tank 202. The bottom of the water tank 202 is connected to a water pump 203. The output end of the water pump 203 is fixedly connected to a water storage pipe 204. The bottom of the water storage pipe 204 is fixedly connected to a plurality of water spray pipes 205. Water outlet grooves 18 are provided around the bottom of the threaded cover 5, and the water outlet grooves 18 are connected to the water spray pipes 205.

[0034] Specifically, by injecting coolant into the water injection pipe 201, the coolant will be stored in the water tank 202. After being pressurized by the water pump 203, the coolant will flow into the water spray pipe 205 through the water storage pipe 204, and then sprayed on various parts inside the drill pipe 6. This can avoid corrosion to the inside of the drill pipe 6 when the drill pipe 6 generates high temperature during long-term operation, thereby improving the economy of the device.

[0035] Reference Figure 1 , Figure 2 and Figure 3 The top of the water injection pipe 201 is rotatably connected with a dust cover 13, the bottom of the drill rod 6 is provided with a drill bit 11, the top of the drill bit 11 is fixedly connected with a clamping block 12, the bottom of the drill rod 6 is provided with a clamping groove 17, and the clamping block 12 is clamped and connected with the clamping groove 17;

[0036] Specifically, the dust cover 13 can prevent the water injection pipe 201 from sucking in a large amount of dust, the drill bit 11 can be used for drilling more conveniently, and the drill bit 11 can be easily removed from the bottom of the drill rod 6 through the cooperation between the clamping block 12 and the clamping slot 17.

[0037] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A controller 14 is fixedly connected to the top of the outer wall of the threaded cover 5, and the controller 14 is electrically connected to the motor 7 and the water pump 203 respectively. A housing 15 is fixedly connected to the outer side of the controller 14, and a shield 16 is rotatably connected to the outer side of the housing 15;

[0038] Specifically, the motor 7 and the water pump 203 can be electrically controlled respectively through the controller 14, the protection capability of the controller 14 can be improved through the housing 15, and the controller 14 can be prevented from being accidentally touched when not in use by opening and closing the protective cover 16.

[0039] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A suction cup 19 is fixedly connected to the left side of the outer wall of the threaded cover, a handle 20 is fixedly connected to the outer wall of the suction cup 19, and a sheath 21 is fixedly connected to the outer wall of the handle 20;

[0040] Specifically, the device can be sucked and fixed by the suction cup 19 , the device can be moved by the handle 20 , and the handle can be protected by the sheath 21 .

[0041] Working principle: before using the device, first start the motor 7 to drive the round rod 8 to rotate. This rotational action will be transmitted to the blade 10 on the ring 9 to rotate it. Through this rotational action, the rock cuttings formed inside the drill rod 6 can be effectively crushed, so that it is easier to clean the impurities in the drill rod 6. This process can achieve dredging inside the drill rod 6 and improve drilling efficiency. At the same time, when the movable rod 3 is pressed, the spring 4 will contract. This action makes it easier to take the threaded cover 5 out of the hollow threaded rod 1.

[0042] And by injecting coolant into the water injection pipe 201, we store the coolant in the water tank 202. Then, through the pressure of the water pump 203, the coolant will be pushed to the water storage pipe 204 and finally enter the water spray pipe 205. In this way, the coolant can be sprayed on various parts inside the drill rod 6. The design of this system helps to solve the problems caused by high temperature in the long-term operation of the drill rod 6. By spraying the coolant in time and evenly, we can effectively reduce the temperature inside the drill rod 6 and prevent corrosion.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A corrosion-resistant anti-drop drill collar, comprising a hollow threaded rod (1), characterized in that: The bottom of the hollow threaded rod (1) is fixedly connected to a drill rod (6), the top of the hollow threaded rod (1) is fixedly connected to a fixed block (22), the left side of the inner wall of the fixed block (22) is slidably connected to a movable rod (3), two adjacent movable rods (3) are fixedly connected to a spring (4), the top of the fixed block (22) is fixedly connected to a threaded cover (5), the two movable rods (3) both penetrate the threaded cover (5), the top of the inner wall of the hollow threaded rod (1) is fixedly connected to a motor (7), the output end of the motor (7) is fixedly connected to a round rod (8), the outer wall of the round rod (8) is fixedly connected to a plurality of circular rings (9), the outer walls of the plurality of circular rings (9) are fixedly connected to a plurality of blades (10), and the inner wall of the threaded cover (5) is provided with a dredging mechanism (2), the dredging mechanism (2) dredges and cleans the inside of the drill collar to prevent the rock debris inside the device from falling off due to excessive weight.

2. The corrosion-resistant anti-drop drill collar according to claim 1, characterized in that: The dredging mechanism (2) comprises a water injection pipe (201), the water injection pipe (201) being connected to the inner wall of the threaded cover (5), the bottom of the water injection pipe (201) passing through the threaded cover (5) and being fixedly connected to a water tank (202), the bottom of the water tank (202) being connected to a water pump (203), the output end of the water pump (203) being fixedly connected to a water storage pipe (204), the bottom of the water storage pipe (204) being fixedly connected to a plurality of water spray pipes (205), and water outlet grooves (18) being provided around the bottom of the threaded cover (5), the water outlet grooves (18) being connected to the water spray pipes (205).

3. The corrosion-resistant anti-drop drill collar according to claim 2, characterized in that: A dust cover (13) is rotatably connected to the top of the water injection pipe (201), and a drill bit (11) is provided at the bottom of the drill rod (6).

4. The corrosion-resistant anti-drop drill collar according to claim 3, characterized in that: A clamping block (12) is fixedly connected to the top of the drill bit (11), a clamping groove (17) is provided at the bottom of the drill rod (6), and the clamping block (12) is clamped and connected to the clamping groove (17).

5. The corrosion-resistant anti-drop drill collar according to claim 1, characterized in that: A controller (14) is fixedly connected to the top of the outer wall of the threaded cover (5), and the controller (14) is electrically connected to the motor (7) and the water pump (203) respectively.

6. The corrosion-resistant anti-drop drill collar according to claim 5, characterized in that: The outer side of the controller (14) is fixedly connected to a housing (15), and the outer side of the housing (15) is rotatably connected to a protective cover (16).

7. The corrosion-resistant anti-drop drill collar according to claim 1, characterized in that: A suction cup (19) is fixedly connected to the left side of the outer wall of the threaded cover.

8. The corrosion-resistant anti-drop drill collar according to claim 7, characterized in that: A handle (20) is fixedly connected to the outer wall of the suction cup (19), and a sheath (21) is fixedly connected to the outer wall of the handle (20).

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