A split-resistant oil extraction drill bit

Abstract

The utility model discloses a kind of anti-crack oil exploitation drill bits, including the drill bit main body of metal material, the installation handle is fixedly installed on drill bit main body upper end, and the installation handle outside is equipped with installation thread, the diamond drill bit of high-strength alloy material is installed in the drill bit main body lower surface, and the drill bit main body lower surface is equipped with water outlet, and the drill bit main body and installation handle are set to hollow structure, the installation ring is installed in the installation handle lower end outside, and the fixed plate is fixedly installed in the installation ring outer surface.This anti-crack oil exploitation drill bit adopts novel structure design, drill bit main body is connected with drilling equipment by the installation thread outside installation handle, installation ring is installed in the installation handle outside in this process, stable roller is set in the outside of installation ring, stable roller is supported in the borehole inner wall in the process of drill bit drilling, reduce the overall shaking of drill bit, reduce the crack damage of drill bit main body due to shaking impact.

Description

Technical Field

[0001] This utility model relates to the field of oil extraction technology, specifically to a crack-resistant oil extraction drill bit. Background Technology

[0002] Oil drilling bits are the core rock-breaking tools in drilling engineering. Their performance directly affects drilling efficiency, quality, and cost. Based on their structural principles and applicable formations, they are mainly classified into roller cone bits, diamond bits, PDC bits, and scraper bits.

[0003] In the prior art, Chinese patent application number CN202211690643.4 discloses a self-lubricating drill bit and an oil drilling rig, comprising: a fluid storage chamber inside the drill bit body; a mounting frame on the surface of the drill bit body; a mounting groove on the surface of the mounting frame; a settling groove at one end of the mounting groove; a connecting pipe between the mounting groove and the fluid storage chamber; an inner sleeve inside the fluid storage chamber; a pin inserted into the mounting groove; a fluid delivery pipe on the surface of the pin; a telescopic hole at one end of the pin; an adjustment section at the other end; and a telescopic rod inserted into the telescopic hole. When the drill bit body rotates, the sealing plate and the gravity block shift, allowing lubricating fluid to enter between the first and second guide channels through the connecting pipe and the mounting groove. The lubricating fluid is then applied between the roller cone and the mounting shaft through the gap, reducing wear between the roller cone and the mounting shaft, decreasing the frequency of drill bit replacement, and thus improving drilling efficiency.

[0004] Based on the above information, it can be seen that oil drilling bits achieve drilling by rotating and friction. However, in actual use, the drill bit cannot fully contact the inner wall of the borehole when drilling underground, so it will shake. The shaking and impact with hard objects underground can easily cause cracks and damage. Utility Model Content

[0005] The purpose of this invention is to provide a crack-resistant oil drilling bit to solve the problem of cracks caused by shaking during use, as mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a crack-resistant oil extraction drill bit, comprising a drill bit body made of metal, an installation shank fixedly mounted on the upper end of the drill bit body, and an installation thread formed on the outside of the installation shank, a diamond drill bit made of high-strength alloy material mounted on the lower surface of the drill bit body, and a water outlet hole formed on the lower surface of the drill bit body, and both the drill bit body and the installation shank are hollow structures, an installation ring is mounted on the lower end of the installation shank, and a fixing plate is fixedly mounted on the outer surface of the installation ring, and a stabilizing roller is provided on the inner side of the fixing plate, and the stabilizing roller is connected to the fixing plate by a shock-absorbing component.

[0007] Preferably, the mounting ring has a fixed fixing block that is evenly distributed at equal intervals inside, and the fixing block and the mounting ring are connected through a sliding connection.

[0008] Preferably, a compression spring corresponding to the fixing block is fixedly installed on the outer surface of the mounting ring, and the fixing block is engaged with a fixing hole opened on the outside of the mounting handle.

[0009] Preferably, the shock-absorbing assembly includes a connecting frame, and the stabilizing roller is rotatably mounted on the upper surface of the connecting frame.

[0010] Preferably, the outer surface of the stabilizing roller is flush with the outer surface of the widest part of the drill bit body.

[0011] Preferably, the connecting frame is connected to the fixed plate, and the fixed plate has a limiting groove inside, with the left and right ends of the connecting frame slidingly connected to the limiting groove at the corresponding position.

[0012] Preferably, a spring damper connected to the connecting frame is fixedly installed inside the limiting groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are: this crack-resistant oil extraction drill bit adopts a novel structural design, the specific details of which are as follows:

[0014] 1. The drill bit body is connected to the drilling equipment through the mounting thread on the outside of the mounting shank. During this process, the mounting ring is installed on the outside of the mounting shank. The outside of the mounting ring is equipped with stabilizing rollers. During the drilling process, the stabilizing rollers support the drill hole inner wall, reducing the overall shaking of the drill bit and reducing cracks and damage to the drill bit body due to shaking and impact.

[0015] Furthermore, a shock-absorbing mechanism is installed between the stabilizing roller and the fixed plate. The stabilizing roller is mounted on the top of the connecting frame, and the connecting frame is connected to the limiting slide groove opened inside the fixed plate. When the drill bit body is impacted during drilling, the connecting frame slides between the limiting slide groove. At this time, the spring damper is used to achieve the purpose of shock absorption, thus achieving a better protection effect.

[0016] 2. Fixing blocks are installed at equal intervals inside the mounting ring. The fixing blocks engage with the fixing holes on the outside of the mounting handle. A compression spring is set on the outside of the mounting ring. The compression spring is used to compress the fixing blocks, so that the fixing blocks are stably connected with the fixing holes. This structure allows the mounting ring to be disassembled and replaced. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the lower surface structure of the drill bit body of this utility model;

[0019] Figure 3 This is a schematic diagram showing the connection relationship between the mounting ring and the mounting handle of this utility model;

[0020] Figure 4 This is a schematic diagram of the mounting ring structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the stabilizing roller structure of this utility model;

[0022] Figure 6 This utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0023] In the diagram: 1. Drill bit body; 2. Mounting shank; 3. Mounting thread; 4. Diamond drill bit; 5. Water outlet; 6. Mounting ring; 7. Stabilizing roller; 8. Fixing block; 9. Compression spring; 10. Fixing hole; 11. Fixing plate; 12. Limiting groove; 13. Connecting frame; 14. Spring damper. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: To achieve stable reduction of sway during drill bit drilling, this example provides the following technical solution, specifically disclosing: a drill bit body 1 made of metal, such as... Figures 1-2 The upper end of the drill bit body 1 is fixedly mounted with an installation shank 2, and the installation shank 2 has an installation thread 3 on its outside. A high-strength alloy diamond drill bit 4 is mounted on the lower surface of the drill bit body 1, and a water outlet hole 5 is opened on the lower surface of the drill bit body 1. Both the drill bit body 1 and the installation shank 2 are designed as hollow structures. Figure 3 An installation ring 6 is installed on the lower outer side of the mounting handle 2, and a fixing plate 11 is fixedly installed on the outer surface of the mounting ring 6. A stabilizing roller 7 is provided on the inner side of the fixing plate 11. Fixing blocks 8 are evenly distributed at equal intervals and are fixedly installed inside the mounting ring 6. The fixing blocks 8 and the mounting ring 6 are slidably connected through each other. A compression spring 9 corresponding to the fixing block 8 is fixedly installed on the outer surface of the mounting ring 6, and the fixing block 8 is engaged with the fixing hole 10 opened on the outside of the mounting handle 2.

[0026] When using the device, first connect the mounting handle 2 to the drill rod in the drilling setup using the mounting thread 3. Then, the drilling equipment drives the drill rod and drill bit body 1 to rotate. The diamond drill bit 4 on the outer surface of the drill bit body 1 rubs against the ground to achieve the purpose of drilling. At the same time, water flows out through the water outlet 5 below the drill bit body 1 to flush out the drilled soil. Before installing the drill bit body 1, the mounting ring 6 is sleeved on the outside of the mounting handle 2. At this time, the compression spring 9 on the outside of the mounting ring 6 is used to compress the fixing block 8, so that the fixing block 8 is stably engaged into the fixing hole 10, thereby fixing the mounting ring 6 to the outside of the mounting handle 2. Afterwards, when the drill bit body 1 is working, the stabilizing roller 7 on the outside of the mounting ring 6 is used to support the inner wall of the borehole to reduce the shaking of the drill bit body 1.

[0027] Example 2: To achieve vibration reduction, this example provides the following technical solution, specifically: the stabilizing roller 7 and the fixed plate 11 are connected by a vibration damping component, such as... Figures 4-5 The shock absorption assembly includes a connecting frame 13, and a stabilizing roller 7 is rotatably mounted on the upper surface of the connecting frame 13. The outer surface of the stabilizing roller 7 is flush with the outer surface of the widest part of the drill bit body 1. The connecting frame 13 is connected to the fixing plate 11, and a limiting groove 12 is formed inside the fixing plate 11. The left and right ends of the connecting frame 13 are slidably connected to the corresponding limiting grooves 12. Figure 6 A spring damper 14, which is connected to the connecting frame 13, is fixedly installed inside the limiting slide groove 12.

[0028] When the drill bit body 1 shakes during operation, the connecting frame 13 for installing the stabilizing roller 7 slides with the limiting groove 12 inside the fixing plate 11. At this time, the connecting frame 13 squeezes the spring damper 14 inside the limiting groove 12, and the spring damper 14 dampens the connecting frame 13, further reducing the shaking of the drill bit body 1.

[0029] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fracture-resistant oil extraction drill bit, comprising a metal drill bit body (1), wherein an mounting shank (2) is fixedly mounted on the upper end of the drill bit body (1), and the mounting shank (2) is provided with mounting threads (3) on its exterior, characterized in that, Also includes: The lower surface of the drill bit body (1) is fitted with a diamond drill bit (4) made of high-strength alloy material, and the lower surface of the drill bit body (1) is provided with a water outlet hole (5), and both the drill bit body (1) and the mounting shank (2) are set as hollow structures. An installation ring (6) is installed on the lower end of the mounting handle (2), and a fixing plate (11) is fixedly installed on the outer surface of the mounting ring (6). A stabilizing roller (7) is provided on the inner side of the fixing plate (11), and the stabilizing roller (7) is connected to the fixing plate (11) by a shock-absorbing component.

2. The anti-fracture oil extraction drill bit according to claim 1, characterized in that: The mounting ring (6) is fixedly installed with evenly distributed fixing blocks (8) at equal intervals, and the fixing blocks (8) and the mounting ring (6) are connected through a sliding connection.

3. The anti-fracture oil extraction drill bit according to claim 2, characterized in that: The outer surface of the mounting ring (6) is fixedly mounted with a compression spring (9) corresponding to the fixing block (8), and the fixing block (8) is engaged with the fixing hole (10) opened outside the mounting handle (2).

4. The anti-fracture oil extraction drill bit according to claim 1, characterized in that: The shock-absorbing assembly includes a connecting frame (13), and the stabilizing roller (7) is rotatably mounted on the upper surface of the connecting frame (13).

5. The anti-fracture oil extraction drill bit according to claim 4, characterized in that: The outer surface of the stabilizing roller (7) is flush with the outer surface of the widest part of the drill bit body (1).

6. A fracture-resistant oil extraction drill bit according to claim 5, characterized in that: The connecting frame (13) is connected to the fixing plate (11), and the fixing plate (11) has a limiting groove (12) inside. The left and right ends of the connecting frame (13) are slidably connected to the limiting groove (12) at the corresponding positions.

7. A fracture-resistant oil extraction drill bit according to claim 6, characterized in that: The limiting slide (12) is internally fixedly installed with a spring damper (14) connected to the connecting frame (13).

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