Novel plastic mixed rock high-speed drilling PDC drill bit

Abstract

According to the technical scheme, the novel plastic mixed rock high-speed drilling PDC drill bit comprises a main body, a blade A and a blade B. The top of the main body is provided with a drill bit body, the blade A is installed on the outer surface of the drill bit body, the blade B is installed on the outer surface of the drill bit body, and one side of the blade A and one side of the blade B are each provided with a round tooth. A rotating column is movably installed on one side of the round teeth, a rotating tool bit is installed at the tail end of the rotating column, conical teeth A are installed on the outer surfaces, located on one side of the rotating tool bit, of the blade A and the blade B, the tool bit is installed on the top of the drill bit, and conical teeth C are arranged on the portions, close to the outer surface, of the top of the tool bit. The novel plastic mixed rock high-speed drilling PDC drill bit solves the problems that the use heights of round teeth of an existing PDC drill bit are the same, pressure applied to rock in the drilling process is roughly the same, crushing force is dispersed, and the drilling efficiency of the drill bit is affected, the time needed by rock crushing is shortened, and therefore the drilling efficiency of the drill bit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PDC drill bit use, in particular to a novel plastic mixed rock high-speed drilling PDC drill bit. Background Art

[0002] PDC drill bits are a commonly used drilling tool. The main part of a PDC drill bit is a cutter covered by one or more layers of PDC cutting teeth. PDC cutting teeth are made of diamond particles and metal binders. They have high hardness and wear resistance and can cut and drill efficiently in underground rocks. PDC drill bits are widely used in the fields of oil and gas exploration and mining. It can drill quickly and efficiently in underground rocks, improving exploration and production efficiency. In addition, PDC drill bits are also used in water well drilling, geological exploration, and engineering construction.

[0003] The scallops of existing PDC drill bits have the same height in use, and the pressure exerted on the rock during the drilling process is roughly the same, resulting in the dispersion of the crushing force and affecting the drilling efficiency of the drill bit. For this reason, we propose a new type of plastic mixed rock high-speed drilling PDC drill bit. Utility Model Content

[0004] The utility model aims to provide a novel PDC drill bit for high-speed drilling of plastic mixed rock, which can achieve the effect of efficiently crushing rocks by staggered scallops of different heights, so as to solve the problem that the scallops of the existing PDC drill bit have the same height and the pressure applied to the rock during the drilling process is roughly the same, resulting in the dispersion of the crushing force and affecting the drilling efficiency of the drill bit.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of plastic mixed rock high-speed drilling PDC drill bit, comprising a main body, a blade A and a blade B, wherein a drill bit is installed on the top of the main body, a blade A is installed on the outer surface of the drill bit, a blade B is installed on the outer surface of the drill bit, round teeth are installed on one side of the blade A and the blade B, a rotating column is movably installed on one side of the round teeth, a rotating cutter head is installed on the end of the rotating column, and conical teeth A are installed on the outer surfaces of the blade A and the blade B on one side of the rotating cutter head, and the conical teeth A and the round teeth are staggered.

[0006] Preferably, a cutter head is installed on the top of the drill bit, and conical teeth C are provided on the top of the cutter head near the outer surface, and conical teeth B are provided on the top of the cutter head near the middle.

[0007] Preferably, a connecting seat is installed in the middle of the bottom of the main body, and card slots are provided on both sides of the outer surface of the main body.

[0008] Preferably, a positioning groove is provided inside the blade wing A and the blade wing B near one side of the round tooth, and a positioning boss is provided on one side of the round tooth at the position of the positioning groove, and the positioning boss is clamped in the positioning groove.

[0009] Preferably, there are three blade wings A in total, and the three blade wings A are evenly distributed on the outer surface of the drill bit.

[0010] Preferably, there are three blade wings B in total, and the three blade wings B are evenly distributed on the outer surface of the drill bit, the three blade wings A and the three blade wings B are staggered, and the outer diameter of the blade wing B is slightly smaller than the outer diameter of the blade wing A.

[0011] Preferably, there are six conical teeth B in total, and the six conical teeth B are evenly distributed on the outer surface of the top of the cutter head.

[0012] Preferably, there are six conical teeth C in total, and the six conical teeth C are evenly distributed at the middle position of the top of the cutter head.

[0013] Preferably, a guide groove is provided on one side of the three blade wings A and the three blade wings B near the top.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The utility model achieves the effect of high-efficiency rock crushing by arranging three blades A, three blades B and round teeth, so as to solve the problem that the round teeth of the existing PDC drill bit have the same height of use and the pressure applied to the rock during the drilling process is roughly the same, resulting in the dispersion of the crushing force and affecting the drilling efficiency of the drill bit, thereby reducing the time required for rock crushing and improving the drilling efficiency of the drill bit.

[0016] 2. The utility model achieves the effect of crushing the rock at the bottom center of the drill bit by setting the cutter head, conical teeth A and conical teeth B, so as to solve the problem that the existing drill bit cannot efficiently crush the rock at the bottom center of the drill bit when drilling, and the rock drilling efficiency is poor, thereby reducing the time required for rock drilling, thereby improving the rock drilling efficiency.

[0017] 3. The utility model achieves the effect of positioning the round teeth by setting the positioning boss and the positioning groove, so as to solve the problem that the round teeth of the existing drill bit are easily offset under the action of stress during welding during production, thereby affecting the drilling effect of the round teeth, reducing the probability of the round teeth offset, thereby improving the drilling effect of the round teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 for Figure 1The enlarged structural diagram of A;

[0020] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0021] Figure 4 It is a partial cross-sectional structural schematic diagram of the blade wing A and the round teeth of the utility model.

[0022] Figure numerals: 1. main body; 2. blade A; 3. drill bit; 4. guide groove; 5. cutter head; 6. round teeth; 7. conical teeth A; 8. blade B; 9. slot; 10. connecting seat; 11. conical teeth B; 12. conical teeth C; 13. positioning groove; 14. positioning boss; 15. rotating cutter head; 16. rotating column. DETAILED DESCRIPTION

[0023] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Embodiment 1

[0025] like Figure 1 As shown, in order to achieve the above purpose, the utility model provides the following technical solutions: a new type of plastic mixed rock high-speed drilling PDC drill bit, including a main body 1, a blade A2 and a blade B8, a drill bit 3 is installed on the top of the main body 1, a blade A2 is installed on the outer surface of the drill bit 3, a blade B8 is installed on the outer surface of the drill bit 3, a round tooth 6 is installed on one side of the blade A2 and the blade B8, a rotating column 16 is movably installed on one side of the round tooth 6, a rotating cutter head 15 is installed at the end of the rotating column 16, and the blade A2 and the blade B8 are installed on one side of the blade A2 and the blade B8. The outer surface of B8 is located on one side of the rotating cutter head 15 and is equipped with conical teeth A7. The conical teeth A7 are staggered with the round teeth 6. The drilling effect of the drill bit 3 is improved by staggering the conical teeth A7 and the round teeth 6. There are three blade wings A2 in total, and the three blade wings A2 are evenly distributed on the outer surface of the drill bit 3. There are three blade wings B8 in total, and the three blade wings B8 are evenly distributed on the outer surface of the drill bit 3. The three blade wings A2 are staggered with the three blade wings B8, and the outer diameter of the blade wing B8 is slightly smaller than the outer diameter of the blade wing A2.

[0026] like Figure 3 and Figure 4 As shown, guide grooves 4 are provided near the top on one side of the three blade wings A2 and the three blade wings B8, a connecting seat 10 is installed in the middle of the bottom of the main body 1, and clamping grooves 9 are provided on both sides of the outer surface of the main body 1 to facilitate the disassembly and assembly of the main body 1 and the drill bit 3. Positioning grooves 13 are provided on one side of the blade wings A2 and the blade wings B8 near the round teeth 6, and a positioning boss 14 is provided on one side of the round teeth 6 at the position of the positioning groove 13. The positioning boss 14 is clamped in the positioning groove 13, and the positioning of the round teeth 6 is convenient through the setting of the positioning boss 14.

[0027] The working principle of a new type of plastic mixed rock high-speed drilling PDC drill bit based on Example 1 is: after the utility model is installed, the main body 1 is rotated at the bottom of the drill pipe through the slot 9 and the connecting seat 10, and then the main body 1 is driven to rotate through the drill pipe, and the three blades A2 and the three blades B8 are driven to rotate through the main body 1, thereby driving the spherical teeth 6 and the conical teeth A7 to rotate, and the plastic mixed rock is drilled. At the same time, the surface breaking effect of the spherical teeth 6 is improved by the rotating column 16 and the rotating cutter head 15, so as to quickly drill holes in the plastic mixed rock. At this point, the working process of this equipment is completed.

[0028] Embodiment 2

[0029] like Figure 1 and Figure 2 As shown, the utility model proposes a new type of plastic mixed rock high-speed drilling PDC drill bit. Compared with the first embodiment, this embodiment also includes: a cutter head 5 is installed on the top of the drill bit 3, and a conical tooth C12 is provided on the top of the cutter head 5 near the outer surface. There are six conical teeth C12 in total, and the six conical teeth C12 are evenly distributed in the middle position of the top of the cutter head 5. A conical tooth B11 is provided near the middle of the top of the cutter head 5. There are six conical teeth B11 in total, and the six conical teeth B11 are evenly distributed on the outer surface of the top of the cutter head 5.

[0030] In this embodiment, when the drill bit 3 rotates, the drill bit 3 drives the cutter head 5 to rotate, and the cutter head 5 drives the conical teeth B11 and the conical teeth C12 to rotate. The rotating conical teeth B11 are used to drill holes in the plastic mixed rock ground, and at the same time, the rotating conical teeth C12 are used to drill holes in the center of the plastic mixed rock, thereby improving the drilling efficiency of the utility model.

[0031] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A novel high-speed PDC drill bit for plastic mixed rock drilling, comprising a main body (1), a blade A (2) and a blade B (8), characterized in that: A drill bit (3) is mounted on the top of the main body (1), a blade A (2) is mounted on the outer surface of the drill bit (3), a blade B (8) is mounted on the outer surface of the drill bit (3), round teeth (6) are mounted on one side of the blade A (2) and the blade B (8), a rotating column (16) is movably mounted on one side of the round teeth (6), a rotating cutter head (15) is mounted on the end of the rotating column (16), and conical teeth A (7) are mounted on the outer surfaces of the blade A (2) and the blade B (8) on one side of the rotating cutter head (15), and the conical teeth A (7) and the round teeth (6) are staggered.

2. A novel plastic mixed rock high-speed drilling PDC drill bit according to claim 1, characterized in that: A cutter head (5) is mounted on the top of the drill bit (3), and conical teeth C (12) are provided on the top of the cutter head (5) near the outer surface, and conical teeth B (11) are provided on the top of the cutter head (5) near the middle.

3. The novel plastic mixed rock high-speed drilling PDC drill bit according to claim 1 is characterized by: A connecting seat (10) is installed in the middle of the bottom of the main body (1), and card slots (9) are provided on both sides of the outer surface of the main body (1).

4. The novel plastic mixed rock high-speed drilling PDC drill bit according to claim 1 is characterized by: A positioning groove (13) is provided inside the blade wing A (2) and the blade wing B (8) on one side close to the round tooth (6), and a positioning boss (14) is provided on one side of the round tooth (6) at the position of the positioning groove (13), and the positioning boss (14) is clamped inside the positioning groove (13).

5. The novel plastic mixed rock high-speed drilling PDC drill bit according to claim 1 is characterized by: There are three blade wings A (2) in total, and the three blade wings A (2) are evenly distributed on the outer surface of the drill bit (3).

6. The novel plastic mixed rock high-speed drilling PDC drill bit according to claim 1 is characterized by: There are three blade wings B (8) in total, and the three blade wings B (8) are evenly distributed on the outer surface of the drill bit (3). The three blade wings A (2) and the three blade wings B (8) are staggered, and the outer diameter of the blade wing B (8) is slightly smaller than the outer diameter of the blade wing A (2).

7. A novel plastic mixed rock high-speed drilling PDC drill bit according to claim 2, characterized in that: There are six conical teeth B (11) in total, and the six conical teeth B (11) are evenly distributed on the top outer surface of the cutter head (5).

8. The novel plastic mixed rock high-speed drilling PDC drill bit according to claim 2 is characterized by: There are six conical teeth C (12) in total, and the six conical teeth C (12) are evenly distributed at the middle position of the top of the cutter head (5).

9. The novel plastic mixed rock high-speed drilling PDC drill bit according to claim 1 is characterized by: A guide groove (4) is provided on one side of the three blade wings A (2) and the three blade wings B (8) near the top.

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