CN115234171A - PDC cutting tooth with high-efficient heat-sinking capability - Google Patents
PDC cutting tooth with high-efficient heat-sinking capability Download PDFInfo
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- CN115234171A CN115234171A CN202210717866.9A CN202210717866A CN115234171A CN 115234171 A CN115234171 A CN 115234171A CN 202210717866 A CN202210717866 A CN 202210717866A CN 115234171 A CN115234171 A CN 115234171A
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- heat dissipation
- pdc
- hard alloy
- alloy base
- cutting tooth
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- 239000000956 alloy Substances 0.000 claims abstract description 63
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 63
- 230000017525 heat dissipation Effects 0.000 claims abstract description 59
- 239000000463 material Substances 0.000 claims abstract description 56
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 52
- 239000010432 diamond Substances 0.000 claims abstract description 52
- 238000005553 drilling Methods 0.000 claims abstract description 22
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 230000002708 enhancing effect Effects 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000036346 tooth eruption Effects 0.000 description 20
- 239000011435 rock Substances 0.000 description 10
- 230000035939 shock Effects 0.000 description 5
- 239000000758 substrate Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000000843 powder 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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- 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)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention discloses a PDC cutting tooth with high-efficiency heat dissipation capacity, which structurally comprises a high-efficiency heat dissipation hard alloy base and a polycrystalline diamond layer connected with the high-efficiency heat dissipation hard alloy base. According to the invention, part of the hard alloy base behind the working surface of the polycrystalline diamond layer is exposed to the drilling fluid by removing part of the material of the hard alloy base, so that the ribbed plate-shaped structure supporting polycrystalline diamond layer is formed. By adopting the rib plate structure, on the premise of ensuring that the hard alloy base supports the polycrystalline diamond layer, the contact area between the hard alloy base near the polycrystalline diamond layer and drilling fluid can be increased, the heat dissipation capability of the PDC tooth is remarkably improved, the temperature gradient of the cutting tooth is reduced, and the service life of the PDC tooth is prolonged.
Description
Technical Field
The invention relates to a cutting tooth applied to the technical field of oil and gas drilling, in particular to a cutting tooth with high-efficiency heat dissipation capacity.
Background
The PDC cutting tooth is a superhard composite material formed by compounding diamond micro powder and a hard alloy matrix in an ultrahigh pressure and high temperature environment, has the wear resistance and strength of diamond and the toughness of the hard alloy matrix, and can be welded on a drill bit through the hard alloy matrix. The PDC drill bit has the advantages of high rock breaking efficiency, high drilling speed, multiple footage, long service life and the like, is widely used in the field of petroleum and natural gas drilling, and the PDC teeth play an important role in the drilling.
Due to the high-speed rotation of the drill bit, the cutting teeth can rub violently when cutting the stratum, and the temperature of the cutting teeth can rise sharply, so that the tooth surfaces of the cutting teeth are easy to crack thermally; when the temperature of the cutting teeth reaches 700 ℃, the diamond is converted into graphite, and the strength of the cutting teeth is greatly reduced. Meanwhile, because the thermal expansion coefficients of the polycrystalline diamond layer and the hard alloy base are different, the expansion size after heating is different, larger residual stress can occur, cracks can be generated inside the cutting teeth, and in addition, the cutting teeth can receive larger impact load, the expansion of the cracks can be accelerated, so that the polycrystalline diamond layer falls off from the hard alloy base, and the cutting teeth are damaged. After polycrystalline diamond layer broke because of wearing and tearing or receiving great impact force, the carbide base can be direct rubs with rock contact back, and the heat of production can further increase, makes the whole temperature rise of cutting tooth, reduces the intensity of cutting tooth, reduces the life of cutting tooth, still can reduce the bite ability of cutting tooth.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the PDC tooth with the heat dissipation area increased by changing the structure of the hard alloy base. The technical scheme is as follows:
the PDC teeth include a polycrystalline diamond layer and a cemented carbide substrate attached thereto. According to the invention, the contact area between the hard alloy base and the drilling fluid is increased by changing the shape of the hard alloy base, so that the heat dissipation capability of the hard alloy base is improved. The technical key point is that partial materials of the hard alloy base are removed to form a ribbed plate-shaped structure supporting polycrystalline diamond layer, and meanwhile, partial hard alloy base behind the working surface of the polycrystalline diamond layer is exposed in drilling fluid to increase the heat dissipation area.
According to the scheme, the polycrystalline diamond layer is supported by arranging the rib plates.
According to the scheme, the local minimum thickness of the hard alloy base after material removal is not less than 1mm.
According to the scheme, the material can be removed in a mode of reserving the newly generated side face as a curved surface or a plane.
According to the scheme, the material is removed in a mode that the side surface is reserved as a curved surface, and the angle of the residual complete hard alloy base part is 180-330 degrees.
According to the scheme, the material is removed in a mode that the side face is reserved as a curved surface, and the radius of the curved surface of the newly generated side face is larger than 1/2 of the radius of the cutting tooth.
According to the scheme, the material is removed in a mode that the side face is reserved as a plane, and the distance from the newly generated side face to the center of the cross section of the PDC cutting tooth is larger than 1/2 of the radius R of the cutting tooth.
According to the scheme, the material is removed in a mode that the side surface is reserved as a curved surface, and when the number of the rib plates is 1, the rib plates are positioned on the symmetrical surface of the cutting tooth.
According to the scheme, the material is removed in a mode that the side face is reserved as a curved surface, and when the number of the rib plates is more than 1, the positions of the rib plates are radially and uniformly distributed relative to the newly generated side face of the material removing part.
According to the scheme, the material is removed in a mode that the side surface is kept to be a plane, and when the number of the rib plates is 1, the rib plates are positioned on the symmetrical surface of the cutting tooth.
According to the scheme, the material is removed in a mode that the side face is reserved as a plane, and when the number of the rib plates is larger than 1, the rib plates are perpendicular to the newly generated side face of the material removing part and symmetrically distributed on two sides of the symmetrical plane of the cutting tooth.
According to the scheme, the rib plate inclined surface can be a plane or an arc surface.
Compared with the prior art, the invention has the advantages that:
1) Part of the material of the hard alloy base is removed, and part of the hard alloy base behind the working surface of the polycrystalline diamond layer is exposed in the drilling fluid, so that the heat dissipation area of the hard alloy base is increased, the heat dissipation capacity is enhanced, the temperature gradient of the PDC cutting teeth is reduced, and the service life of the cutting teeth is prolonged.
2) Part of materials of the hard alloy base are removed to form a ribbed plate-shaped stable structure supporting polycrystalline diamond layer, the side face of each rib plate can also help heat dissipation, the heat dissipation capacity is improved, the contact area of the hard alloy base and rock can be reduced, and the biting capacity of the cutting teeth is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of a single-plane ribbed plate curved surface PDC cutting tooth with high-efficiency heat dissipation;
FIG. 2 is a schematic structural view of a PDC cutting tooth with two planar rib plate curved surfaces and high-efficiency heat dissipation;
FIG. 3 is a top view of a PDC cutting tooth with two planar rib plate curved surfaces and high-efficiency heat dissipation;
FIG. 4 is a schematic structural diagram of a three-plane ribbed plate curved surface PDC cutting tooth with high-efficiency heat dissipation;
FIG. 5 is a top view of a three-plane ribbed plate curved surface PDC cutting tooth with high heat dissipation efficiency;
FIG. 6 is a schematic structural view of a single-plane ribbed plate planar PDC cutting tooth with high heat dissipation efficiency;
FIG. 7 is a schematic structural view of a planar PDC cutting tooth with two planar ribs for efficient heat dissipation;
FIG. 8 is a schematic diagram of a three-plane ribbed plate planar PDC cutting tooth with high heat dissipation efficiency;
FIG. 9 is a schematic view of a single-arc-surface ribbed plate curved surface PDC cutting tooth with high-efficiency heat dissipation
FIG. 10 is a graph comparing wear states of PDC cutters with high efficiency heat dissipation;
FIG. 11 is a comparison graph of friction areas of a conventional PDC cutting tooth, a single-plane ribbed plate high-efficiency heat dissipation PDC cutting tooth, and a single-arc ribbed plate high-efficiency heat dissipation PDC cutting tooth.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by embodiments in the following with reference to the accompanying drawings, which are used for explaining the present invention and the present invention is not limited to the following embodiments.
Example one
Referring to fig. 1, an embodiment of the heat-dissipating hard alloy substrate comprises a polycrystalline diamond layer 1 with a radius R of 6.72mm and a thickness of 3mm and a high-efficiency heat-dissipating hard alloy substrate 2 connected with the polycrystalline diamond layer 1 and with a thickness of 10 mm. Partial materials of the high-efficiency heat dissipation hard alloy base 2 are removed in a mode that the side face is reserved as a curved surface, and a part of a hard alloy base plane 7 connected with the working part of the polycrystalline diamond layer 1 is exposed, so that the contact area of the hard alloy base 2 and drilling fluid is increased, and the heat dissipation capacity is enhanced. After the materials are removed, 1 rib plate-shaped structure supporting polycrystalline diamond layer 1 is formed, the shock resistance is enhanced, the side face 3 of each rib plate can be in contact with drilling fluid, heat is taken away, and the heat dissipation capacity of the cutting teeth is further enhanced. In addition, the ribbed plate 6 is set to be a triangular ribbed plate, after the polycrystalline diamond layer 1 is damaged, the contact area of the hard alloy base 2 and rocks can be reduced, and the eating capacity of the PDC teeth is improved. After the material of the PDC tooth is removed, the angle α of the complete portion 4 of the high-efficiency heat-dissipation alloy base is 248 °, the radius r of the curved surface of the newly generated side surface 5 of the removed material portion is 4.04mm, the width of the rib plate 6 is 2mm, the rib plate is located on the symmetric surface of the PDC tooth, and the local minimum thickness h of the hard alloy base of the removed material portion is 2mm. And chamfering treatment is also carried out on the high-efficiency heat-dissipation alloy base 2, so that stress concentration is reduced.
Example two
Referring to fig. 2, the second embodiment is composed of a polycrystalline diamond layer 1 with a radius R of 6.72mm and a thickness of 3mm and a high-efficiency heat-dissipation cemented carbide base 2 connected with the polycrystalline diamond layer 1 and having a thickness of 10 mm. The high-efficiency heat dissipation hard alloy base 2 removes partial materials in a mode that the side surface is reserved as a curved surface, exposes partial hard alloy base plane 7 connected with the working part of the polycrystalline diamond layer 1, increases the contact area of the hard alloy base 2 and drilling fluid, and enhances the heat dissipation capacity. 2 rib-plate-shaped structure supporting polycrystalline diamond layers 1 are formed after materials are removed, the shock resistance is enhanced, the side faces 3 of the ribs can be in contact with drilling fluid, heat is taken away, and the heat dissipation capacity of the cutting teeth is further enhanced. In addition, the ribbed plate 6 is set to be a triangular ribbed plate, so that the contact area of the hard alloy base 2 and rock can be reduced after the polycrystalline diamond layer 1 is damaged, and the eating capacity of the PDC teeth is improved. After the PDC teeth shown in the second embodiment remove the material, the angle α of the complete portion 4 of the high-efficiency heat-dissipating alloy base is 240 °, the radius r of the curved surface of the newly-generated side surface 5 of the removed material portion is 4.00mm, the width of the rib plate 6 is 2mm, the newly-generated side surface 5 of the removed material portion is radially and uniformly distributed, and the local minimum thickness h of the cemented carbide base of the removed material portion is 2mm. And chamfering treatment is also carried out on the high-efficiency heat-dissipation alloy base 2, so that stress concentration is reduced.
Referring to fig. 3, in the second embodiment, the included angle β between the rib and the rib is 45 °, and the included angle γ between the rib and the complete cemented carbide base part 4 is 35 °.
EXAMPLE III
Referring to fig. 4, the third embodiment is composed of a polycrystalline diamond layer 1 with a radius R of 6.72mm and a thickness of 3mm and a high-efficiency heat-dissipation cemented carbide base 2 connected with the polycrystalline diamond layer 1 and having a thickness of 10 mm. Partial materials of the high-efficiency heat dissipation hard alloy base 2 are removed in a mode that curved surfaces are reserved on the side faces, and partial hard alloy base planes 7 connected with the working part of the polycrystalline diamond layer 1 are exposed, so that the contact area of the hard alloy base 2 and drilling fluid is increased, and the heat dissipation capacity is enhanced. After the materials are removed, 3 ribbed plate-shaped structure supporting polycrystalline diamond layers 1 are formed, the shock resistance is enhanced, the side faces 3 of the ribbed plates can be in contact with drilling fluid, heat is taken away, and the heat dissipation capacity of the cutting teeth is further enhanced. In addition, the ribbed plate 6 is set to be a triangular ribbed plate, so that the contact area of the hard alloy base 2 and rock can be reduced after the polycrystalline diamond layer 1 is damaged, and the eating capacity of the PDC teeth is improved. After the material of the PDC cutter shown in the third embodiment is removed, the angle α of the complete portion 4 of the high-efficiency heat-dissipating alloy base is 204 °, the radius r of the curved surface of the newly-generated side surface 5 of the removed material portion is 4.40mm, the width of the rib plate 6 is 2mm, the newly-generated side surface 5 of the removed material portion is radially and uniformly distributed, and the local minimum thickness h of the cemented carbide base of the removed material portion is 2mm. And the efficient heat-radiating alloy base 2 is chamfered, so that stress concentration is reduced.
Referring to fig. 5, in the third embodiment, the angle β between the ribs is 45 °, and the distance d between the ribs and the complete cemented carbide base part 4 is 2.16mm.
Example four
Referring to fig. 6, the fourth embodiment is composed of a polycrystalline diamond layer 1 with a radius R of 6.72mm and a thickness of 3mm and a high-efficiency heat-dissipation cemented carbide base 2 connected with the polycrystalline diamond layer 1 and having a thickness of 10 mm. Partial materials of the high-efficiency heat dissipation hard alloy base 2 are removed in a mode that planes are reserved on the side faces, and partial hard alloy base planes 7 connected with the working part of the polycrystalline diamond layer 1 are exposed, so that the contact area of the hard alloy base 2 and drilling fluid is increased, and the heat dissipation capacity is enhanced. After materials are removed, 1 rib plate-shaped structure supporting polycrystalline diamond layer 1 is formed, the shock resistance is enhanced, the side face 3 of each rib plate is in contact with drilling fluid, heat is taken away, and the heat dissipation capacity of the cutting teeth is further enhanced. In addition, the ribbed plate 6 is set to be a triangular ribbed plate, after the polycrystalline diamond layer 1 is damaged, the contact area of the hard alloy base 2 and rocks can be reduced, and the eating capacity of the PDC teeth is improved. After the PDC cutter shown in the fourth embodiment removes the material, the distance D from the newly generated side face 5 of the removed material portion to the center of the cross section of the PDC cutter is 4.72mm, the width of the rib plate 6 is 2mm, the rib plate is located on the symmetric plane of the PDC cutter, and the local minimum thickness h of the cemented carbide base of the removed material portion is 2mm. And chamfering treatment is also carried out on the cutting teeth, so that the stress concentration phenomenon is reduced.
EXAMPLE five
Referring to fig. 7, the fifth embodiment is composed of a polycrystalline diamond layer 1 with a radius R of 6.72mm and a thickness of 3mm and a high-efficiency heat-dissipation cemented carbide base 2 connected with the polycrystalline diamond layer 1 and having a thickness of 10 mm. Partial materials of the high-efficiency heat dissipation hard alloy base 2 are removed in a mode that planes are reserved on the side faces, and partial hard alloy base planes 7 connected with the working portion of the polycrystalline diamond layer 1 are exposed, so that the contact area between the hard alloy base 2 and drilling fluid is increased, and the heat dissipation capacity is enhanced. After the materials are removed, 2 rib plate-shaped structure supporting polycrystalline diamond layers 1 are formed, the shock resistance is enhanced, the side surfaces 3 of the ribs are in contact with drilling fluid, heat is taken away, and the heat dissipation capacity of the cutting teeth is further enhanced. In addition, the ribbed plate 6 is set to be a triangular ribbed plate, so that after the polycrystalline diamond layer 1 is damaged, the contact area between the hard alloy base 2 and rock can be reduced, and the eating capacity of the PDC teeth is improved. After the material of the PDC cutter shown in the fifth embodiment is removed, the distance D from the newly generated side face 5 of the removed material portion to the center of the cross section of the PDC cutter is 4.22mm, the width of the rib plate 6 is 2mm, the rib plate is perpendicular to the newly generated side face 5 of the removed material portion and symmetrically distributed on both sides of the symmetrical plane of the cutter, the distance between the rib plate and the rib plate is 2mm, and the local minimum thickness h of the cemented carbide base of the removed material portion is 2mm. And the cutting teeth are chamfered, so that the stress concentration phenomenon is reduced.
EXAMPLE six
Referring to fig. 8, the sixth embodiment consists of a polycrystalline diamond layer 1 with a radius R of 6.72mm and a thickness of 3mm and a high-efficiency heat-dissipating cemented carbide base 2 connected with the polycrystalline diamond layer 1 and with a thickness of 10 mm. Partial materials of the high-efficiency heat dissipation hard alloy base 2 are removed in a mode that planes are reserved on the side faces, and partial hard alloy base plane 7 connected with the working part of the polycrystalline diamond layer 1 is exposed, so that the contact area of the hard alloy base 2 and drilling fluid is increased, and the heat dissipation capacity is enhanced. After materials are removed, 3 rib plate-shaped structural support polycrystalline diamond layers 1 are formed, the impact resistance is enhanced, the side faces 3 of the rib plates are in contact with drilling fluid, heat is taken away, and the heat dissipation capacity of the cutting teeth is further enhanced. In addition, the ribbed plate 6 is set to be a triangular ribbed plate, so that after the polycrystalline diamond layer 1 is damaged, the contact area between the hard alloy base 2 and rock can be reduced, and the eating capacity of the PDC teeth is improved. After the material of the PDC cutter shown in the sixth embodiment is removed, the distance D from the newly generated side face 5 of the removed material portion to the center of the cross section of the PDC cutter is 3.72mm, the width of the rib plate 6 is 1.5mm, the rib plate is perpendicular to the newly generated side face 5 of the removed material portion and symmetrically distributed on both sides of the symmetrical plane of the cutter, the distance between the rib plate and the rib plate is 2mm, and the local minimum thickness h of the hard alloy base of the removed material portion is 2mm. And chamfering treatment is also carried out on the cutting teeth, so that the stress concentration phenomenon is reduced.
EXAMPLE seven
Referring to fig. 9, the fins 6 of the PDC cutter with high heat dissipation may be formed to have a flat or curved surface.
Referring to fig. 10 and 11, fig. 10A is a schematic view of the polycrystalline diamond layer 1 before being worn, and fig. 10B is a schematic view of the cemented carbide substrate 2 contacting the rock after the polycrystalline diamond layer 1 is worn. If the contact area is large, the feeding capacity of the PDC teeth is reduced, and the ribbed plate structure is adopted, so that the contact area can be reduced by adjusting the thickness h of the residual hard alloy base, the width of the ribbed plate and the radian of the inclined plane, and the feeding capacity is enhanced. The shaded portion in FIG. 11 is the contact area of three PDC cutters at the same wear level, the three PDC cutters have the same radius and the same rib width but different rib bevel shapes, and the contact area of the ordinary PDC cutter in FIG. 11A is 67.5304mm 2 FIG. 11B shows the contact area of the PDC teeth with the planar inclined planes of 50.0272mm 2 FIG. 11C is a schematic view showing the PDC teeth with cambered surfaces having a contact area of 48.8126mm 2 。
Claims (13)
1. The utility model provides a PDC cutting tooth with high-efficient heat-sinking capability, its structure includes polycrystalline diamond layer and high-efficient heat dissipation carbide base, its characterized in that: and removing partial materials of the hard alloy base, exposing partial hard alloy base behind the working surface of the polycrystalline diamond layer, increasing the contact area of the hard alloy base and the drilling fluid, and enhancing the heat dissipation capability.
2. The PDC cutter having a high heat dissipation capacity of claim 1 wherein: the newly created side surface remains a curved surface after the material is removed.
3. The PDC cutter having a high heat dissipation capability of claim 1, wherein: the newly created side remains planar after the material is removed.
4. The PDC cutter having a high heat dissipation capability of claim 1, wherein: the local minimum thickness of the hard alloy base after material removal is not less than 1mm.
5. The PDC cutter having a high heat dissipation capability of claim 1, wherein: the polycrystalline diamond layer is supported by the arrangement of the rib plates.
6. The PDC cutter having a high heat dissipation capability of claim 2, wherein: the angle of the remaining complete cemented carbide base portion is 180-330 deg..
7. The PDC cutter having a high heat dissipation capability of claim 2, wherein: the radius of the curve of the newly generated side surface of the removed material part is larger than 1/2 of the radius of the cutting tooth.
8. A PDC cutter having a high heat dissipating capability in accordance with claims 2 and 5 wherein: the position of the rib is on the symmetrical plane of the cutting tooth when the number of the rib is 1.
9. A PDC cutter having a high heat dissipating capability in accordance with claims 2 and 5 wherein: when the number of ribs is greater than 1, the positions thereof are radially uniformly distributed with respect to the newly generated curved flank of the removed material portion.
10. The PDC cutter having a high heat dissipation capability of claim 3 wherein: the distance from the removed part of the newly generated side face to the center of the cross section of the PDC cutting tooth is more than 1/2 of the radius of the cutting tooth.
11. A PDC cutter having a high heat dissipating capability in accordance with claims 3 and 5 wherein: the ribs 6 are located on the symmetry plane of the cutting tooth when the number of ribs is 1.
12. A PDC cutter having a high heat dissipating capability in accordance with claims 3 and 5 wherein: when the number of the rib plates 6 is more than 1, the rib plates are positioned perpendicular to the newly generated side surface of the removed material part and are symmetrically distributed on two sides of the symmetrical surface of the cutting tooth.
13. A PDC cutting tooth with high heat dissipating ability according to claim 5, wherein the inclined surface of the rib 6 is a plane or a cambered surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210717866.9A CN115234171A (en) | 2022-06-21 | 2022-06-21 | PDC cutting tooth with high-efficient heat-sinking capability |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210717866.9A CN115234171A (en) | 2022-06-21 | 2022-06-21 | PDC cutting tooth with high-efficient heat-sinking capability |
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| CN115234171A true CN115234171A (en) | 2022-10-25 |
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| CN202210717866.9A Pending CN115234171A (en) | 2022-06-21 | 2022-06-21 | PDC cutting tooth with high-efficient heat-sinking capability |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1310963A (en) * | 1969-07-02 | 1973-03-21 | Philips Electronic Associated | Method of securing a diamond to a support by means of a soldered joint |
| US5590729A (en) * | 1993-12-09 | 1997-01-07 | Baker Hughes Incorporated | Superhard cutting structures for earth boring with enhanced stiffness and heat transfer capabilities |
| CN201835753U (en) * | 2010-06-29 | 2011-05-18 | 西南石油大学 | Polycrystalline diamond compact for rock-breaking tool for drilling |
| CN202090839U (en) * | 2011-05-04 | 2011-12-28 | 胡苏宁 | Composite sheet of drilling bit |
| US20160002982A1 (en) * | 2011-10-18 | 2016-01-07 | Us Synthetic Corporation | Polycrystalline diamond compacts, related products, and methods of manufacture |
| CN113982492A (en) * | 2021-11-17 | 2022-01-28 | 深圳市海明润超硬材料股份有限公司 | Novel polycrystalline diamond compact with reverse-inclination angle and narrow edge trimming port |
-
2022
- 2022-06-21 CN CN202210717866.9A patent/CN115234171A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1310963A (en) * | 1969-07-02 | 1973-03-21 | Philips Electronic Associated | Method of securing a diamond to a support by means of a soldered joint |
| US5590729A (en) * | 1993-12-09 | 1997-01-07 | Baker Hughes Incorporated | Superhard cutting structures for earth boring with enhanced stiffness and heat transfer capabilities |
| CN201835753U (en) * | 2010-06-29 | 2011-05-18 | 西南石油大学 | Polycrystalline diamond compact for rock-breaking tool for drilling |
| CN202090839U (en) * | 2011-05-04 | 2011-12-28 | 胡苏宁 | Composite sheet of drilling bit |
| US20160002982A1 (en) * | 2011-10-18 | 2016-01-07 | Us Synthetic Corporation | Polycrystalline diamond compacts, related products, and methods of manufacture |
| CN113982492A (en) * | 2021-11-17 | 2022-01-28 | 深圳市海明润超硬材料股份有限公司 | Novel polycrystalline diamond compact with reverse-inclination angle and narrow edge trimming port |
Non-Patent Citations (2)
| Title |
|---|
| 钟云鹏等: "旋转模块式PDC钻头破岩机理研究", 地下空间与工程学报, 15 December 2019 (2019-12-15) * |
| 长春地质学校等: "钻探工程 上", vol. 1, 31 December 1979, 地质出版社, pages: 14 * |
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