CN113216858B - High wear-resisting PDC drill bit - Google Patents
High wear-resisting PDC drill bit Download PDFInfo
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- CN113216858B CN113216858B CN202110584484.9A CN202110584484A CN113216858B CN 113216858 B CN113216858 B CN 113216858B CN 202110584484 A CN202110584484 A CN 202110584484A CN 113216858 B CN113216858 B CN 113216858B
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- 238000001816 cooling Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 13
- 229910003460 diamond Inorganic materials 0.000 claims description 6
- 239000010432 diamond Substances 0.000 claims description 6
- 230000001788 irregular Effects 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 description 9
- 239000000126 substance Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of PDC drill bits, in particular to a high-wear-resistance PDC drill bit which can effectively save use and production cost and has better wear resistance, and the PDC drill bit comprises a drill bit base body, wherein the top end of the drill bit base body is provided with a drill handle, the bottom end of the drill bit base body is provided with a plurality of blades, the bottom end of the drill bit base body is provided with a plurality of sliding grooves, the blades are respectively arranged in the sliding grooves, the blade positioned at the left part of the bottom end of the drill bit base body is a first blade, the other blades are second blades, the first blade and the second blades are arranged in the same way, the top end of each sliding groove is provided with a sliding tube, the inside of each sliding tube is provided with a sliding block, the periphery of the inner circumferential wall of each sliding tube is provided with a sliding groove, the bottom end of each sliding block is provided with a sliding block, each sliding block can slide up and down in the sliding groove, the top end of each sliding block is connected with the top end of the sliding groove, and a spring is arranged around each sliding block and each sliding pipe.
Description
Technical Field
The invention relates to the technical field of PDC drill bits, in particular to a high-wear-resistance PDC drill bit.
Background
PDC bits (polycrystalline diamond compact bits) are known to be one of the most common drilling tools currently used in oil drilling. With the continuous progress of cutting tooth material technology and drill bit design technology, the unique drilling safety, the flexibility of the structural form and the efficient cutting performance of cutting and breaking rock of the PDC drill bit enable the stratum adaptation range of the PDC drill bit in oil and gas drilling engineering to be wider and wider, and statistics is carried out on the fact that most of the total drilling footage of the PDC drill bit in the world at present is completed by the PDC drill bit, so that the PDC drill bit plays an absolutely important role.
But some manufacturers of producing PDC drill bits today can add diamond particles in the drill bits and sell them as PDC drill bits, the wear resistance and cutting performance of such PDC drill bits are poor, and high-quality PDC drill bits are higher in price due to the greatly increased cost, so that the use cost is greatly increased, and the PDC drill bits are used when drilling, if drilling into hard pin block substances suddenly, one side of the drill bits is stressed greatly, the other side is stressed little, the wear rate of the PDC drill bits can be greatly increased, the PDC drill bits are scrapped in advance, and the drilling direction of the PDC drill bits can be deviated, so that the use cost is further increased.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the PDC drill bit which is effective in saving use and production cost and has better wear resistance.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a high-wear-resistance PDC drill bit comprises a drill bit base body, wherein a drill handle is arranged at the top end of the drill bit base body, a plurality of blades are arranged at the bottom end of the drill bit base body, the intervals among the blades are the same, a first cutting face is arranged on each blade, a cooling pipe is arranged inside the drill bit base body, a plurality of cooling holes are formed in the bottom end of the drill bit base body and communicated with the cooling pipe, a plurality of sliding grooves are formed in the bottom end of the drill bit base body, the blades are respectively arranged inside the sliding grooves, the blade positioned on the left portion of the bottom end of the drill bit base body is a first blade, the other blades are second blades, the first blade is in an irregular shape, the bottom end of the first blade is arranged at a right angle with the front end of the first blade, other edges of the first blade are arranged in a round angle mode, the first blade and the second blades are arranged in the same mode, and the top end of each sliding groove is provided with a sliding pipe, each sliding tube is internally provided with a sliding block, a sliding groove is formed around the circumferential inner wall of each sliding tube, the bottom end of each sliding block is provided with a sliding block, each sliding block can slide up and down in the sliding groove, the top end of each sliding block is connected with the top end of the sliding groove, springs are arranged around each sliding block and the sliding tube, one end of each spring is connected with the top ends of a plurality of sliding grooves, the other end of each spring is connected with the top ends of a plurality of blades, the bottom end of the cutting surface of each blade is provided with a cutting groove, the inside of each cutting groove is fixedly connected with a cutting block, the cross section of each cutting block is in an irregular rectangle shape, each cutting block is provided with a second cutting surface and a cutting corner, each second cutting surface is arranged at the bottom end of a plurality of first cutting surfaces, and each cutting corner is arranged at the bottom end of each second cutting surface, the second cutting surface is obliquely arranged.
Furthermore, the cutting corners of each cutting block are all arranged in a round angle mode.
Furthermore, the arc radius of the cutting angle of each cutting block is 3-7 mm.
Furthermore, the material of each cutting block is a synthetic diamond material.
Furthermore, the surfaces of the first blade and the second blades are provided with cutting layers.
Furthermore, the material of the cutting layer is hard alloy.
Further, the inclination angle of each second cutting surface is 15 degrees.
Furthermore, the connection mode between each cutting block and the plurality of blades is integrally cast.
Furthermore, the left end face of the first blade is arranged in an arc shape, and the radius of the left end face of the first blade is 2.5-5 mm larger than that of the drill bit base body.
(III) advantageous effects
Compared with the prior art, the invention provides a high-wear-resistance PDC drill bit, which has the following beneficial effects:
the high-abrasion PDC drill bit cuts the stratum by the cutting block arranged at the bottom end of the cutting face of each blade when the drill bit drills, effectively saves materials, and ensures that the drill bit has better cutting performance, the stratum is cut by the cutting angle on the cutting block, so that the PDC drill bit is sharper, and has better cutting performance when cutting harder substances, when some harder substances are drilled by the PDC drill bit, the blades can slide upwards under the action of the spring, the cutting amount of the cutting block is reduced, the PDC drill bit can gradually cut, the PDC drill bit is prevented from suddenly cutting harder substances with larger cutting amount, the abrasion of the PDC drill bit is effectively reduced, the abrasion resistance of the PDC drill bit is increased, the PDC drill bit can be used for a longer time, and the replacement frequency of the PDC drill bit is reduced, thereby reducing the cost of use of the PDC bit.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic bottom view of the present invention;
FIG. 3 is an enlarged, partial, schematic view of FIG. 1 at A;
FIG. 4 is an enlarged, partial, schematic view of FIG. 1 at B;
fig. 5 is a schematic longitudinal sectional view at B shown in fig. 1 according to the present invention.
In the figure: 1. a drill bit substrate; 2. a drill shank; 3. a first cutting surface; 4. a cooling tube; 5. a cooling hole; 6. a sliding groove; 7. a first blade; 8. a second blade; 9. a sliding tube; 10. a slider; 11. a chute; 12. a slider; 13. a spring; 14. a cutting block; 15. a second cutting face; 16. cutting corners; 17. and cutting the layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the PDC drill bit with high wear resistance according to the present invention includes a drill bit base 1, a drill bit 2 is disposed at a top end of the drill bit base 1, the drill bit is fixed by the drill bit 2, a plurality of blades are disposed at a bottom end of the drill bit base 1, intervals between the blades are the same, each blade is provided with a first cutting surface 3, a most front surface of each blade in a rotation direction is the first cutting surface 3, a cooling pipe 4 is disposed inside the drill bit base 1, a plurality of cooling holes 5 are disposed at the bottom end of the drill bit base 1 and communicated with the cooling pipe 4, a cooling fluid is sprayed out through the cooling pipe 4 and the cooling holes 5 to cool the drill bit, so as to prevent excessive heat generated by friction of the drill bit from reducing hardness and usage efficiency of the drill bit, a plurality of sliding grooves 6 are disposed at the bottom end of the drill bit base 1, the blades are respectively disposed inside the sliding grooves 6, the outline of each sliding groove 6 is approximately the same as that of a plurality of blades, the blades are conveniently installed inside the sliding grooves 6 and can slide up and down in the sliding grooves 6 more easily without circling in the sliding grooves 6, the blade at the left part of the bottom end of the drill base body 1 is a first blade 7, the other blades are second blades 8, the first blade 7 is in an irregular shape, the bottom end of the first blade 7 and the front end of the first blade 7 are arranged in a right angle, the front end of the bottom of the first blade 7 is a first cutting surface 3, other edges of the first blade 7 are arranged in a round angle shape, the first blade 7 and the second blades 8 are arranged in the same shape, the PDC drill is more stable in rotation during drilling, the top end of each sliding groove 6 is provided with a sliding pipe 9, and a sliding block 10 is installed inside each sliding pipe 9, a sliding groove 11 is arranged around the circumferential inner wall of each sliding tube 9, each sliding groove 11 is arranged at the middle part and the bottom part of each sliding tube 9, a sliding block 12 is arranged at the bottom end of each sliding block 10, a small gap is arranged between each sliding block 12 and each sliding groove 11, each sliding block 12 can slide up and down in each sliding groove 11, the top end of each sliding block 12 is connected with the top end of each sliding groove 6, a spring 13 is arranged around each sliding block 10 and the sliding tube 9, each spring 13 is a spring 13 with relatively high strength, one end of each spring 13 is connected with the top ends of a plurality of sliding grooves 6, the other end of each spring 13 is connected with the top ends of a plurality of blades, the bottom end of the cutting surface of each blade is provided with a cutting groove, each cutting groove is in a strip shape, a cutting block 14 is fixedly connected in each cutting groove, and when the drill bit drills through the cutting block 14 arranged at the bottom end of the cutting surface of each blade, the PDC drill bit has the advantages that the formation is cut, materials are effectively saved, the drill bit has good cutting performance, the cross section of each cutting block 14 is in an irregular rectangular shape, each cutting block 14 is provided with a second cutting face 15 and cutting corners 16, each second cutting face 15 is arranged at the bottom end of each first cutting face 3, each cutting corner 16 is arranged at the bottom end of each second cutting face 15, the formation is cut through the cutting corners 16 on the cutting blocks 14, the PDC drill bit is sharp, good cutting performance is achieved when hard substances are cut, and the second cutting faces 15 are arranged in an inclined mode.
The cutting corners 16 of each cutting block 14 are rounded, so that the cutting corners 16 of the cutting blocks 14 are not easily broken during cutting, and the wear resistance of the pin block is effectively improved.
The arc radius of the cutting corner 16 of each cutting block 14 is 3-7 mm, so that the arc radius of the cutting corner 16 can adopt drill bits with cutting corners 16 of different sizes as required.
The material of each cutting block 14 is a synthetic diamond material, so that the cutting performance of the drill bit can be customized according to the grade of the synthetic diamond, and the drill bit is suitable for more environments.
The surfaces of the first blades 7 and the second blades 8 are provided with cutting layers 17, so that the first blades 7 and the second blades 8 can assist the cutting blocks 14 in cutting, and the cutting performance of the PDC drill bit is improved.
The cutting layer 17 is made of hard alloy, so that the cutting layer 17 has higher hardness and lower production cost.
The inclination angle of each second cutting surface 15 is 15 degrees, so that the cutting corner 16 has better cutting performance and is effectively prevented from breaking.
Wherein, the connection mode between every cutting block 14 and the several blades is casting as an organic whole, makes the connection between cutting block 14 and the blade more stable, and difficult emergence is become flexible.
The left end face of the first blade 7 is arranged in an arc shape, the radius of the left end face of the first blade 7 is 2.5-5 mm larger than that of the drill bit base body 1, and therefore stratum debris drilled by the PDC can be discharged upwards through the drill bit base body 1 and a hole drilled by the PDC drill bit.
To sum up, this high wear-resisting PDC drill bit, the theory of operation does, when this PDC drill bit creeps into some comparatively hard materials, the wing can upwards slide under spring 13's effect, and reduce the cutting output of cutting block 14, make this PDC drill bit can be gradually cut, prevent this PDC drill bit from cutting harder material with great cutting output suddenly, and effectively reduce the wearing and tearing of this PDC drill bit, increase the wearability of this drill bit, and then make this PDC drill bit can use longer time, the change frequency of PDC drill bit has been reduced, thereby the use cost of this PDC drill bit has been reduced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a high wear-resisting PDC drill bit, includes drill bit base member (1), the top of drill bit base member (1) is provided with drillstock (2), the bottom of drill bit base member (1) is provided with the several wing, the several interval between the wing is the same, and all is provided with first cutting face (3) on every wing, and the inside of drill bit base member (1) is provided with cooling tube (4), and the bottom of drill bit base member (1) is provided with several cooling hole (5) to communicate its characterized in that with cooling tube (4): the drill bit is characterized in that a plurality of sliding grooves (6) are formed in the bottom end of the drill bit base body (1), a plurality of blades are respectively installed inside the sliding grooves (6), the blade positioned at the left portion of the bottom end of the drill bit base body (1) is a first blade (7), the other blades are second blades (8), the first blade (7) is irregularly shaped, the bottom end of the first blade (7) and the front end of the first blade (7) are arranged at a right angle, other edges of the first blade (7) are arranged at fillets, the first blade (7) and the second blades (8) are arranged in the same manner, a sliding tube (9) is arranged at the top end of each sliding groove (6), a sliding block (10) is installed inside each sliding tube (9), and a sliding groove (11) is formed in the periphery of the inner wall of each sliding tube (9), the bottom end of each sliding block (10) is provided with a sliding block (12), each sliding block (12) can slide up and down in a sliding groove (11), the top end of each sliding block (12) is connected with the top end of a sliding groove (6), springs (13) are mounted around each sliding block (10) and a sliding pipe (9), one end of each spring (13) is connected with the top ends of a plurality of sliding grooves (6), the other end of each spring (13) is connected with the top ends of a plurality of blades, the bottom end of the cutting surface of each blade is provided with a cutting groove, a cutting block (14) is fixedly connected inside each cutting groove, the cross section of each cutting block (14) is irregular and rectangular, each cutting block (14) is provided with a second cutting surface (15) and a cutting angle (16), each second cutting surface (15) is arranged at the bottom end of a plurality of first cutting surfaces (3), each cutting corner (16) is arranged at the bottom end of each second cutting face (15), and the second cutting faces (15) are obliquely arranged.
2. The highly wear resistant PDC drill bit of claim 1, wherein: the cutting corners (16) of each cutting block (14) are rounded.
3. A highly wear resistant PDC drill bit according to claim 2, wherein: the arc radius of the cutting angle (16) of each cutting block (14) is 3-7 mm.
4. The highly wear resistant PDC drill bit of claim 1, wherein: the material of each cutting block (14) is a synthetic diamond material.
5. The highly wear resistant PDC drill bit of claim 1, wherein: the surfaces of the first blade (7) and the second blades (8) are provided with cutting layers (17).
6. The PDC drill bit of claim 5 wherein: the material of the cutting layer (17) is hard alloy.
7. The highly wear resistant PDC drill bit of claim 1, wherein: the angle of inclination of each second cutting face (15) is 15 degrees.
8. The highly wear resistant PDC drill bit of claim 1, wherein: the connection mode between each cutting block (14) and a plurality of blades is integrally cast.
9. The highly wear resistant PDC drill bit of claim 1, wherein: the left end face of the first blade (7) is arranged in an arc shape, and the radius of the left end face of the first blade (7) is 2.5-5 mm larger than that of the drill bit base body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110584484.9A CN113216858B (en) | 2021-05-27 | 2021-05-27 | High wear-resisting PDC drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110584484.9A CN113216858B (en) | 2021-05-27 | 2021-05-27 | High wear-resisting PDC drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113216858A CN113216858A (en) | 2021-08-06 |
| CN113216858B true CN113216858B (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110584484.9A Active CN113216858B (en) | 2021-05-27 | 2021-05-27 | High wear-resisting PDC drill bit |
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| CN (1) | CN113216858B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114809930A (en) * | 2022-04-27 | 2022-07-29 | 武汉亿斯达工具有限公司 | Combined PDC drill bit |
| CN115217419B (en) * | 2022-09-20 | 2023-06-23 | 南通朗壹建筑科技有限公司 | Shaft excavation drilling equipment for building construction |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2215017Y (en) * | 1995-03-01 | 1995-12-13 | 李学军 | High-efficiancy diamond compounded piece bit |
| CN102953686A (en) * | 2011-08-30 | 2013-03-06 | 中国石油化工股份有限公司 | Steel body type diamond-impregnated bit |
| CN202659154U (en) * | 2012-06-04 | 2013-01-09 | 刘新军 | Cold fixed PDC (Polycrystalline Diamond Compound) sheet drill bit |
| CN205172441U (en) * | 2015-12-02 | 2016-04-20 | 胡庆波 | Directional drilling's PDC drill bit |
| CN207332768U (en) * | 2017-09-23 | 2018-05-08 | 四川奥格特金刚石钻头有限公司 | A kind of shockproof PDC drill bit |
| CN208396661U (en) * | 2018-06-14 | 2019-01-18 | 陕西博朗中天实业有限公司 | A kind of wear-resisting type drill bit |
| CN211666643U (en) * | 2019-12-13 | 2020-10-13 | 河南金浩源矿山机械有限公司 | Diamond damping PDC drill bit |
| CN212958474U (en) * | 2020-07-11 | 2021-04-13 | 临清市泰宇钻具制造有限公司 | PDC drill bit for drilling complex rock stratum |
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2021
- 2021-05-27 CN CN202110584484.9A patent/CN113216858B/en active Active
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