CN220667449U - Airtight coring PDC drill bit with water hole erosion-resistant reinforcing structure - Google Patents
Airtight coring PDC drill bit with water hole erosion-resistant reinforcing structure Download PDFInfo
- Publication number
- CN220667449U CN220667449U CN202322319932.XU CN202322319932U CN220667449U CN 220667449 U CN220667449 U CN 220667449U CN 202322319932 U CN202322319932 U CN 202322319932U CN 220667449 U CN220667449 U CN 220667449U
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- Prior art keywords
- sleeve
- drill bit
- water hole
- pdc
- bit body
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 230000003628 erosive effect Effects 0.000 title claims abstract description 22
- 230000003014 reinforcing effect Effects 0.000 title abstract description 6
- 238000005219 brazing Methods 0.000 claims abstract description 3
- 238000003466 welding Methods 0.000 claims description 7
- 230000002787 reinforcement Effects 0.000 claims 5
- 239000007788 liquid Substances 0.000 abstract description 12
- 239000000956 alloy Substances 0.000 abstract description 7
- 229910045601 alloy Inorganic materials 0.000 abstract description 6
- 230000035777 life prolongation Effects 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model discloses a closed coring PDC drill bit with a water hole erosion-resistant reinforcing structure, which comprises a drill bit body, wherein a cutter blade is arranged at the crown part on the right side of the drill bit body, PDC teeth are welded on the outer surface of the cutter blade, a joint is arranged on the left side of the drill bit body, a first sleeve is fixedly connected with the left side of the drill bit body in a penetrating manner, the first sleeve is fixed in a first mounting hole through brazing, and a second sleeve is communicated with the right side of the first sleeve. According to the utility model, through the cooperation of the second sleeve, the second mounting hole, the water hole, the first mounting hole and the first sleeve, the advantages of vortex generation prevention and service life prolongation are achieved, the thickness of the hard alloy sleeve is increased at the position of the side wall of the water hole, the problem that the thinner position is easy to erode and perforate due to better erosion resistance of the hard alloy can be effectively solved, and the problem that the erosion area is large due to the fact that the diameter of the alloy sleeve at the liquid inlet position is larger can be solved due to the fact that the vortex flow occurs at the liquid flow passage inlet position.
Description
Technical Field
The utility model relates to the technical field of PDC drill bits, in particular to a closed coring PDC drill bit with a water hole erosion-resistant reinforcing structure.
Background
The polycrystalline diamond compact bit is characterized in that the shape of the compact bit is circular, the compact bit is welded on a cylindrical cutting tool in an embedded mode, the PDC bit is formed by embedding the cutting tool on a bit body, and the polycrystalline diamond compact bit is mainly used for coal field drilling, geological exploration and petroleum drilling and can be divided into coring and non-coring.
The sealed coring is to quickly protect the core obtained by the drill by using sealing liquid, so that the pollution of drilling liquid to the core is prevented, the current sealed coring PDC drill bit is easy to generate vortex at the inlet position of a liquid flow passage, and the drill bit is easy to be scrapped due to the fact that the side wall is thin and is easy to be eroded and perforated by slurry.
Disclosure of Invention
The utility model aims to provide a closed coring PDC drill bit with a water hole erosion-resistant reinforcing structure, which has the advantages of better erosion resistance, vortex generation at the inlet of a liquid flow passage, and prolonged service life, and solves the problems that vortex is easy to generate at the inlet of the liquid flow passage, and the drill bit is scrapped due to the fact that the side wall is thin and is easily eroded and perforated by mud.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a airtight PDC drill bit that takes core with water hole erosion resistance reinforced structure, includes the drill bit body, the crown on drill bit body right side is equipped with the wing, the surface welding of wing has PDC tooth, the left side of drill bit body is equipped with the joint, the left side of drill bit body runs through fixedly connected with first sleeve pipe, first sheathed tube right side welding intercommunication has the second sleeve pipe.
Preferably, a new sleeve may be added to the right side of the second sleeve, thereby increasing the total sleeve length.
Preferably, the drill bit body comprises a base body, a water hole is formed in the base body, a first mounting hole and a second mounting hole are formed in the left side of the inner cavity of the water hole respectively, and a welding seam is welded between the right side of the joint and the base body.
Preferably, the number of the water holes is 4-16, and the base body and the connector are connected through threads.
Preferably, the number of the blades is 4-16, and the number of the PDC teeth is a plurality of the PDC teeth.
Preferably, the first sleeve and the second sleeve are made of cemented carbide, and the diameter of the first sleeve is larger than that of the second sleeve.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, through the cooperation of the second sleeve, the second mounting hole, the water hole, the first mounting hole and the first sleeve, the advantages of vortex generation prevention and service life prolongation are achieved, the thickness of the hard alloy sleeve is increased at the position of the side wall of the water hole, the problem that the thinner position is easy to erode and perforate due to better erosion resistance of the hard alloy can be effectively solved, and the problem that the erosion area is large due to the fact that the diameter of the alloy sleeve at the liquid inlet position is larger can be solved due to the fact that the vortex flow occurs at the liquid flow passage inlet position. And because the first sleeve, the second sleeve and the newly added sleeve on the right side of the second sleeve are independently separated sleeves, the shorter sleeve is easier to assemble in deep hole assembly.
Drawings
FIG. 1 is a cross-sectional view of the structure of the present utility model;
FIG. 2 is an enlarged view of FIG. 1A in accordance with the present utility model;
fig. 3 is a right side view of the bit body of the present utility model.
In the figure: 1. a bit body; 2. PDC teeth; 3. a blade; 4. a second sleeve; 5. a joint; 6. a second mounting hole; 7. a water hole; 8. a first mounting hole; 9. a base; 10. welding seams; 11. a first sleeve.
Description of the embodiments
Referring to fig. 1-3, a closed coring PDC drill bit with a water hole erosion-resistant reinforcing structure comprises a drill bit body 1, wherein a blade 3 is arranged at the crown of the right side of the drill bit body 1, PDC teeth 2 are welded on the outer surface of the blade 3, a joint 5 is arranged on the left side of the drill bit body 1, a first sleeve 11 is fixedly connected to the left side of the drill bit body 1 in a penetrating manner, the first sleeve 11 is fixed in a first mounting hole 8 through brazing, a second sleeve 4 is communicated with the right side of the first sleeve 11, and a new sleeve can be continuously added on the right side of the second sleeve 4;
the drill bit body 1 comprises a base body 9, a water hole 7 is formed in the base body 9, a first mounting hole 8 and a second mounting hole 6 are formed in the left side of an inner cavity of the water hole 7 respectively, a welding seam 10 is welded between the right side of the joint 5 and the base body 9, and the drill bit body has a function of convenient installation by arranging the first mounting hole 8 and the second mounting hole 6, so that a first sleeve 11 and a second sleeve 4 can be conveniently and fixedly installed in the water hole 7;
the number of the water holes 7 is 4-16, and the base body 9 and the joint 5 are connected through threads;
the number of the blades 3 is 4-16, and the number of the PDC teeth 2 is a plurality of the blades;
the first sleeve 11 and the second sleeve 4 are made of cemented carbide, and the diameter of the first sleeve 11 is larger than that of the second sleeve 4.
When the novel water hole type water pump is used, the left side of the water hole 7 is provided with the first mounting hole 8 and the second mounting hole 6 with different diameters, then the right side of the second sleeve 4 is inserted from the left side of the water hole 7, the second sleeve 4 is arranged in the second mounting hole 6, the first sleeve 11 is arranged in the first mounting hole 8, the first sleeve 11 and the second sleeve 4 are arranged at the liquid inlet of the left side of the water hole 7, the thickness of the inside of the water hole 7 can be increased, the first sleeve 11 and the second sleeve 4 are made of hard alloy materials, the erosion resistance is better, the defect that the thinner part is easy to erode and perforate is overcome, and the diameter of the first sleeve 11 is larger than that of the second sleeve 4, so that the problem that the erosion area is large due to eddy current generated at the position of the liquid flow passage inlet is easy is solved. The first sleeve 11, the second sleeve 4 and the sleeve newly added on the right side of the second sleeve 4 are independently separated sleeves, and the shorter sleeve is easier to assemble in deep hole assembly.
To sum up: this airtight PDC drill bit that takes core with water hole erosion resistance reinforced structure uses through the cooperation of second sleeve pipe 4, second mounting hole 6, water hole 7, first mounting hole 8 and first sleeve pipe 11, has solved and has produced the vortex easily in liquid runner entry position, and the lateral wall is thin easily by the problem that mud erosion perforation caused the drill bit to scrap. And the assembly is easier.
Claims (6)
1. Airtight coring PDC drill bit with water hole erosion resistance reinforced structure, including drill bit body (1), its characterized in that: the crown on drill bit body (1) right side is equipped with wing (3), the surface welding of wing (3) has PDC tooth (2), the left side of drill bit body (1) is equipped with joint (5), the left side of drill bit body (1) runs through fixedly connected with first sleeve pipe (11), and first sleeve pipe (11) are fixed in first mounting hole (8) through brazing, the right side intercommunication of first sleeve pipe (11) has second sleeve pipe (4).
2. The closed core PDC bit with water hole erosion reinforcement structure of claim 1 wherein a new casing can be added on the right side of the second casing (4) to increase the total casing length.
3. The closed core PDC bit with water hole erosion reinforcement structure of claim 1 wherein: the drill bit body (1) comprises a base body (9), a water hole (7) is formed in the base body (9), a first mounting hole (8) and a second mounting hole (6) are formed in the left side of an inner cavity of the water hole (7) respectively, and a welding seam (10) is welded between the right side of the joint (5) and the base body (9).
4. The closed core PDC bit with water hole erosion reinforcement structure of claim 3 wherein: the number of the water holes (7) is 4-16, and the base body (9) and the connector (5) are connected through threads.
5. The closed core PDC bit with water hole erosion reinforcement structure of claim 1 wherein: the number of the blades (3) is 4-16, and the number of the PDC teeth (2) is a plurality of.
6. The closed core PDC bit with water hole erosion reinforcement structure of claim 1 wherein: the first sleeve (11) and the second sleeve (4) are made of cemented carbide, and the diameter of the first sleeve (11) is larger than that of the second sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322319932.XU CN220667449U (en) | 2023-08-29 | 2023-08-29 | Airtight coring PDC drill bit with water hole erosion-resistant reinforcing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322319932.XU CN220667449U (en) | 2023-08-29 | 2023-08-29 | Airtight coring PDC drill bit with water hole erosion-resistant reinforcing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220667449U true CN220667449U (en) | 2024-03-26 |
Family
ID=90338588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322319932.XU Active CN220667449U (en) | 2023-08-29 | 2023-08-29 | Airtight coring PDC drill bit with water hole erosion-resistant reinforcing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220667449U (en) |
-
2023
- 2023-08-29 CN CN202322319932.XU patent/CN220667449U/en active Active
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| GR01 | Patent grant |