Drilling tool for oil exploitation

Abstract

The utility model relates to the technical field of oil exploitation drilling tools, in particular to an oil exploitation drilling tool which comprises a hollow rod, a conveying thread is fixedly connected to the hollow rod, and a drill bit is fixedly connected to the lower end of the hollow rod. By arranging the sliding plate, the jacking rod, the linkage plate, the trigger plate, the connecting rod, the stress plate, the pulling mechanism and other components, the corrosion-resistant pulling rope can be pulled to move towards one side by rotating the pulling bolt, the stress plate is pulled downwards, then the stress plate pushes the connecting rod and the trigger plate to move downwards, and under the action of the linkage plate, the corrosion-resistant pulling rope can be pulled to move towards the other side. The two sliding plates move in the opposite directions, so that the jacking rod is pushed to be inserted into the drainage hole, the drainage hole can be sealed, meanwhile, silt possibly existing in the drainage hole can be cleaned, the possibility of blockage caused by the silt remaining in the drainage hole is reduced, and the stability of subsequent water spraying is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil drilling tools, in particular to an oil drilling tool. BACKGROUND

[0002] The oil drilling tool is a key equipment in oil drilling engineering, which is usually composed of a drill pipe and a drill bit. The drill pipe is an elongated tubular component connecting the surface equipment and the bottom hole assembly, which is composed of a pipe body and connecting joints at both ends. Its functions include transmitting torque, conveying drilling fluid, and bearing tension, etc. In order to improve the temperature during drilling, water injection is usually used to reduce the temperature during drilling.

[0003] Through retrieval, the oil drilling tool disclosed in Chinese patent application No. CN202420174936.5 relates to the technical field of oil exploitation. It comprises a power assembly, a drill pipe and a crushing head. A plurality of second through holes are symmetrically formed on the outer side of the drill pipe. A water delivery cylinder is movably embedded in the interior of the drill pipe. A water injection pipe is threadedly arranged on the front surface of the water delivery cylinder. A plurality of first through holes are symmetrically formed on the outer side of the water delivery cylinder. The water delivery cylinder and other components are installed. The water injection pipe is guided to move up and down through the guide groove. The first through holes symmetrically formed on the interior of the water delivery cylinder and the second through holes symmetrically formed on the interior of the drill pipe are prevented from being misaligned. When the oil drilling tool stops working, the water sprayed through the second through holes and the first through holes can cool the oil drilling tool, prolonging the service life of the oil drilling tool. After the oil drilling tool is used, the mud can be easily cleaned, effectively assisting manual cleaning of the oil drilling tool, and effectively reducing the labor expenditure of the workers.

[0004] According to the related technology in the above, the inventors found that the following defects exist: However, during actual use, when the drill pipe is pulled out, a large amount of mud in the drill hole and hard clay and small stones in the formation will move with the mud. The sizes of these particles are different, and some smaller particles can match the size of the through hole, easily entering the interior of the through hole. Especially when the diameter of the through hole is designed to be small, it is easy to enter the interior of the through hole. Although the water spray can clean the drill pipe, the effect of water flow flushing is limited, and the water flow may not generate enough impact force to flush out the impurities stuck inside. Especially for hard clay and small stones stuck in irregular positions inside the through hole, it is difficult for the water flow to loosen and carry them out. Once solidified, it may be blocked, affecting the efficiency of water spraying. SUMMARY

[0005] In order to solve the problems mentioned in the background art, the present application provides an oil drilling tool.

[0006] This application provides an oil drilling tool, which adopts the following technical solution: it includes a hollow rod, a feed thread is fixedly connected to the hollow rod, a drill bit is fixedly connected to the lower end of the hollow rod, multiple drainage holes are opened on the hollow rod, and a water injection assembly is provided on the hollow rod;

[0007] The drill bit has two sliding plates slidably fitted on its upper side. Multiple top-pressure rods that cooperate with the drainage holes are fixedly connected to opposite sides of the two sliding plates. Two linkage plates are rotatably fitted on the upper sides of the two sliding plates. A trigger plate is rotatably fitted on the upper side of the two linkage plates. A connecting rod is fixedly connected to the upper side of the trigger plate. A force-bearing plate is provided on the upper side of the connecting rod. A guide plate that slidably cooperates with the connecting rod is fixedly connected to one side of the inner wall of the hollow rod. A pulling mechanism that cooperates with the force-bearing plate is provided on the hollow rod. A corrosion-resistant tension spring is fixedly connected to the adjacent sides of the two sliding plates. A detection mechanism is provided on the hollow rod.

[0008] Optionally, the water injection assembly includes a hollow ring rotatably fitted to the outside of the hollow rod, a water inlet formed on the hollow rod and located inside the hollow ring, and a water injection pipe disposed on one side of the hollow ring.

[0009] Optionally, the pulling mechanism includes a threaded hole on one side of the hollow rod, a pulling bolt threaded into the inner wall of the threaded hole, and a corrosion-resistant pulling rope fixedly connected between the pulling bolt and the force plate.

[0010] Optionally, the detection mechanism includes a movable ring that slides on the outside of the hollow rod, a plurality of mounting slots formed on the upper side of the movable ring, and a bubble calibrator fixedly connected to the inner wall of the plurality of mounting slots.

[0011] Optionally, a force-bearing rod is fixedly connected to the upper side of the hollow rod, a drive sleeve is fitted on the force-bearing rod, and a fixing bolt that cooperates with the force-bearing rod is provided on the drive sleeve.

[0012] Optionally, a guide groove is provided on the upper side of the drill bit, and both sliding plates are slidably fitted inside the guide groove.

[0013] Optionally, the guide plate has a guide hole, and the corrosion-resistant pulling rope slides inside the guide hole.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] 1. This utility model, by setting up components such as a sliding plate, a top pressure rod, a linkage plate, a trigger plate, a connecting rod, a force plate, and a pulling mechanism, allows the corrosion-resistant pulling rope to be moved to one side by rotating the pulling bolt, thereby pulling the force plate downward. Then, the force plate pushes the connecting rod and the trigger plate downward. Under the action of the linkage plate, the two sliding plates move in opposite directions, thereby pushing the top pressure rod to insert into the interior of the drain hole. This not only seals the drain hole but also cleans any mud, sand, or pebbles that may be present inside, reducing the possibility of blockage caused by residual mud and sand inside the drain hole and ensuring the stability of subsequent water spraying.

[0016] 2. By setting up a detection mechanism, this utility model can enable the bubble calibrator on the moving ring to be observed after the machine is stopped during drilling. The bubble calibrator works based on the principle of gravity, and the position of the bubbles is observed to determine whether it is horizontal or vertical, thereby improving the accuracy of drilling. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the overall three-dimensional cross-section of the embodiments of this application;

[0019] Figure 3 This is an embodiment of the present application. Figure 2 Enlarged structural diagram at point A;

[0020] Figure 4 This is an embodiment of the present application. Figure 2 Enlarged structural diagram at point B.

[0021] Reference numerals: 1. Hollow rod; 2. Feeding thread; 3. Drill bit; 4. Drain hole; 5. Water injection assembly; 501. Hollow ring; 502. Water inlet; 503. Water injection pipe; 6. Sliding plate; 7. Top pressure rod; 8. Linkage plate; 9. Trigger plate; 10. Connecting rod; 11. Force plate; 12. Guide plate; 13. Pulling mechanism; 131. Threaded hole; 132. Pull bolt; 133. Corrosion-resistant pull rope; 14. Corrosion-resistant tension spring; 15. Detection mechanism; 151. Movable ring; 152. Mounting groove; 153. Bubble calibrator; 16. Force rod; 17. Drive sleeve; 18. Fixing bolt; 19. Guide groove; 20. Guide hole. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 —4 provides further detailed description of this application.

[0023] This application discloses an oilfield drilling tool. For example... Figures 1-4As shown, including the hollow rod 1, the hollow rod 1 is fixedly connected with conveying thread 2, the lower end of the hollow rod 1 is fixedly connected with drill bit 3, the hollow rod 1 is provided with a plurality of drainage holes 4, the hollow rod 1 is provided with water injection assembly 5;

[0024] The upper side of the drill bit 3 is slidably connected with two sliding plates 6, the opposite sides of the two sliding plates 6 are fixedly connected with a plurality of top pressure rods 7 matched with the drainage holes 4, the upper sides of the two sliding plates 6 are rotatably connected with two linkage plates 8, the upper sides of the two linkage plates 8 are rotatably connected with a trigger plate 9, the upper side of the trigger plate 9 is fixedly connected with a connecting rod 10, the upper side of the connecting rod 10 is provided with a stress plate 11, one side of the inner wall of the hollow rod 1 is fixedly connected with a guide plate 12 slidably connected with the connecting rod 10, the hollow rod 1 is provided with a pulling mechanism 13 matched with the stress plate 11, the proximal side of the two sliding plates 6 is fixedly connected with a corrosion-resistant tension spring 14, and the hollow rod 1 is provided with a detection mechanism 15.

[0025] Please refer to Figure 3 , the water injection assembly 5 includes a hollow ring 501 rotatably connected outside the hollow rod 1, a water inlet 502 formed in the hollow rod 1 and located inside the hollow ring 501, and a water injection pipe 503 arranged on one side of the hollow ring 501. The hollow ring 501 can be connected between the hollow rod 1 through a sealing bearing. When water is injected from the water injection pipe 503 into the hollow ring 501, it is then injected from the inside of the water inlet 502, which does not affect the rotation of the hollow rod 1.

[0026] Please refer to Figure 3 , the pulling mechanism 13 includes a threaded hole 131 formed on one side of the hollow rod 1, a pulling bolt 132 threadedly connected in the inner wall of the threaded hole 131, and a corrosion-resistant pulling rope 133 fixedly connected between the pulling bolt 132 and the stress plate 11. By rotating the pulling bolt 132 in the threaded hole 131, the corrosion-resistant pulling rope 133 can be moved downward to move the stress plate 11, thereby operating the connecting rod 10.

[0027] Please refer to Figure 1 , the detection mechanism 15 includes a movable ring 151 slidably connected outside the hollow rod 1, a plurality of mounting grooves 152 formed on the upper side of the movable ring 151, and a bubble alignment instrument 153 fixedly connected to the inner wall of the plurality of mounting grooves 152. When drilling, after stopping the machine, the bubble alignment instrument 153 on the movable ring 151 can be observed to make the bubble alignment instrument 153 work based on the principle of gravity. By observing the position of the water bubble, it can be determined whether it is horizontal or vertical, thereby improving the accuracy of drilling. The movable ring 151 will not be introduced into the hole drilled by the drill bit 3 and the conveying thread 2.

[0028] Please refer to Figure 1 and Figure 2The upper side of the hollow rod 1 is fixedly connected with a force rod 16, a driving sleeve 17 is sleeved on the force rod 16, a fixing bolt 18 matched with the force rod 16 is arranged on the driving sleeve 17, the driving sleeve 17 can be connected with a driving device such as a motor, and the driving sleeve 17 and the force rod 16 are fixed by the fixing bolt 18 penetrating through the driving sleeve 17 and the force rod 16. When the hollow rod 1 needs to be replaced, the fixing bolt 18 is reversely rotated to realize the replacement.

[0029] Please refer to Figure 2 The upper side of the drill bit 3 is provided with a guide groove 19, and the two sliding plates 6 are slidingly matched in the guide groove 19. When the sliding plates 6 are subjected to extrusion force, the sliding plates 6 can be guided by the guide groove 19.

[0030] Please refer to Figure 3 The guide plate 12 is provided with a guide hole 20, and the corrosion-resistant pulling rope 133 is slidingly matched in the guide hole 20. When the corrosion-resistant pulling rope 133 is pressed downward, the corrosion-resistant pulling rope 133 can be further guided by the guide hole 20, so that the pulling force is better converted into downward movement after being pulled.

[0031] The implementation principle of the drilling tool for oil exploitation in the embodiment of the application is as follows: in use, first, the driving sleeve 17 is connected with the corresponding driving member, then the hollow rod 1 drives the drill bit 3 to drill a hole in the ground, the conveying screw 2 conveys the drilled material, then the water injection pipe 503 is connected with the outer connecting pipe of the response table, water source is injected into the hollow ring 501, the water source enters the inside of the hollow rod 1 from the water inlet 502 and is sprayed from the inside of the plurality of drainage holes 4, so that the water source is injected into the hole, and the water source plays a role in cooling the conveying screw 2 and the drill bit 3.

[0032] When the use is completed, the corrosion-resistant pulling rope 133 is moved to one side by rotating and pulling the pulling bolt 132, the stress plate 11 is pulled downward, then the connecting rod 10 and the trigger plate 9 are pushed to move downward, under the action of the linkage plate 8, the two sliding plates 6 move in opposite directions, so that the top pressing rod 7 is inserted into the inside of the drainage hole 4, not only the drainage hole 4 can be sealed, but also the inner wall of the drainage hole 4 can be impacted, so that the possible mud and stones in the inside of the drainage hole 4 are cleaned, the possibility of blockage caused by residual mud in the inside of the drainage hole 4 is reduced, and the stability of subsequent water spraying is ensured.

[0033] When the hole is drilled, the machine is stopped, the situation of the bubble alignment instrument 153 on the movable ring 151 is observed, the bubble alignment instrument 153 works based on the principle of gravity, whether it is horizontal or vertical is judged by observing the position of the water bubble, and the accuracy when drilling is improved.

[0034] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A drilling tool for oil exploration comprising a hollow rod (1), characterised in that: The hollow rod (1) is fixedly connected with a conveying thread (2), the lower end of the hollow rod (1) is fixedly connected with a drill bit (3), a plurality of drainage holes (4) are formed in the hollow rod (1), and a water injection assembly (5) is arranged on the hollow rod (1); The upper side of the drill bit (3) is slidably connected with two sliding plates (6), the opposite sides of the two sliding plates (6) are fixedly connected with a plurality of top pressing rods (7) matched with the drainage holes (4), the upper sides of the two sliding plates (6) are rotatably connected with two linkage plates (8), the upper sides of the two linkage plates (8) are rotatably connected with a trigger plate (9), the upper side of the trigger plate (9) is fixedly connected with a connecting rod (10), the upper side of the connecting rod (10) is provided with a stress plate (11), one side of the inner wall of the hollow rod (1) is fixedly connected with a guide plate (12) slidably connected with the connecting rod (10), the hollow rod (1) is provided with a pulling mechanism (13) matched with the stress plate (11), the sides close to the two sliding plates (6) are fixedly connected with corrosion-resistant tension springs (14), and the hollow rod (1) is provided with a detection mechanism (15).

2. A drilling tool for use in the extraction of petroleum according to claim 1, characterised in that: The water injection assembly (5) comprises a hollow ring (501) rotatably connected to the outer side of the hollow rod (1), a water inlet (502) formed in the hollow rod (1) and located inside the hollow ring (501), and a water injection pipe (503) arranged on one side of the hollow ring (501).

3. The drilling tool for oil exploration as claimed in claim 1, wherein: The pulling mechanism (13) comprises a threaded hole (131) formed in one side of the hollow rod (1), a pulling bolt (132) threadedly connected to the inner wall of the threaded hole (131), and a corrosion-resistant pulling rope (133) fixedly connected between the pulling bolt (132) and the stress plate (11).

4. The drilling tool for oil exploration as claimed in claim 1, wherein: The detection mechanism (15) comprises a movable ring (151) slidably connected to the outer side of the hollow rod (1), a plurality of mounting grooves (152) formed in the upper side of the movable ring (151), and a bubble calibrator (153) fixedly connected to the inner walls of the mounting grooves (152).

5. The drilling tool for oil exploration as claimed in claim 1, wherein: The upper side of the hollow rod (1) is fixedly connected with a stress rod (16), the stress rod (16) is sleeved with a driving sleeve (17), and the driving sleeve (17) is provided with a fixing bolt (18) matched with the stress rod (16).

6. The drilling tool for oil exploration as claimed in claim 1, wherein: The upper side of the drill bit (3) is provided with a guide groove (19), and the two sliding plates (6) are slidably connected in the guide groove (19).

7. A drilling tool for use in the oil industry as claimed in claim 3, characterised in that: The guide plate (12) is provided with a guide hole (20), and the corrosion-resistant pulling rope (133) is slidably connected in the guide hole (20). The upper side of the drill bit (3) is provided with a guide groove (19), and the two sliding plates (6) are slidably connected in the guide groove (19). The guide plate (12) is provided with a guide hole (20), and the corrosion-resistant pulling rope (133) is slidably connected in the guide hole (20).

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