US20190368276A1 - Polycrystalline diamond compact - Google Patents
Polycrystalline diamond compact Download PDFInfo
- Publication number
- US20190368276A1 US20190368276A1 US16/541,133 US201916541133A US2019368276A1 US 20190368276 A1 US20190368276 A1 US 20190368276A1 US 201916541133 A US201916541133 A US 201916541133A US 2019368276 A1 US2019368276 A1 US 2019368276A1
- Authority
- US
- United States
- Prior art keywords
- curved surface
- polycrystalline diamond
- diamond compact
- cemented carbide
- carbide substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 42
- 239000010432 diamond Substances 0.000 title claims abstract description 42
- 239000000758 substrate Substances 0.000 claims abstract description 13
- 239000011435 rock Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000009760 electrical discharge machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B10/56—Button-type inserts
- E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
- E21B10/5673—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts having a non planar or non circular cutting face
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C2204/00—End product comprising different layers, coatings or parts of cermet
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
Definitions
- This disclosure relates to the field of composite materials, and more particularly, to a polycrystalline diamond compact (PDC).
- PDC polycrystalline diamond compact
- Polycrystalline diamond compacts are composed of diamond and a cemented carbide substrate and are widely used in manufacturing of drill bits.
- conventional PDCs have a flat surface, exhibit relatively low working efficiency, and the cutting edges of the PDCs tend to break down.
- a polycrystalline diamond compact comprising a cemented carbide substrate and a polycrystalline diamond layer disposed on the cemented carbide substrate.
- the polycrystalline diamond layer is nonplanar and comprises a first curved surface, a second curved surface, and a side surface directly connected to the cemented carbide substrate.
- the first curved surface is connected to the second curved surface.
- the joint of the first curved surface and the second curved surface protrudes to form a first cutting edge.
- the joints of the first curved surface and the second curved surface and the side surface protrudes to form a plurality of second cutting edges.
- the first cutting edge has an included angle formed by an edge of the first curved surface and an edge of the second curved surface, and the included angle is between 10 and 179°.
- the second cutting edges each have an included angle formed by the first curved surface and the side surface or the second curved surface and the side surface, and the included angle is between 10 and 179°.
- the polycrystalline diamond layer comprises a chamfer.
- the nonplanar polycrystalline diamond layer is formed by contact or non-contact processing or a combination thereof, such as electrical discharge machining, laser processing and so on.
- the design of the non-planar polycrystalline diamond layer improves the impact resistance of the polycrystalline diamond compact.
- the arrangement of the first and second cutting edges functioning as cutter teeth reduces the cutting resistance of the polycrystalline diamond compact.
- the polycrystalline diamond compact exhibits relatively high drilling efficiency, and no failure such as teeth collapse occurs.
- FIG. 1 is a schematic diagram of a polycrystalline diamond compact according to one embodiment of the disclosure.
- FIG. 2 is a left view of the polycrystalline diamond compact in FIG. 1 .
- FIGS. 1-2 shows a polycrystalline diamond compact comprising a cemented carbide substrate 200 and a polycrystalline diamond layer 100 disposed on the cemented carbide substrate.
- the polycrystalline diamond layer 100 is nonplanar and comprises a first curved surface 101 , a second curved surface 101 ′, and a side surface 300 connected to the cemented carbide substrate 200 .
- the first curved surface 101 is connected to the second curved surface 101 ′.
- a joint of the first curved surface 101 and the second curved surface 101 ′ protrudes to form a first cutting edge 104 .
- Joints of the first curved surface 101 or the second curved surface 101 ′ and the side surface 300 protrudes to form a plurality of second cutting edges 103 .
- the polycrystalline diamond layer 100 comprises a chamfer 102 disposed between the first curved surface and the side surface, and between the second curved surface and the side surface.
- the polycrystalline diamond compact has a diameter of 15.88 mm and a height of 13.2 mm.
- the polycrystalline diamond compact is prepared by high temperature and high-pressure sintering combined with laser processing.
- the first cutting edge formed by an edge of the first curved surface and an edge of the second curved surface has an included angle of 148.5°.
- the second cutting edges formed by the first curved surface and the side surface or the second curved surface and the side surface is 169.3°.
- the chamber of the polycrystalline diamond layer has a width of 0.56 mm.
- the minimum thickness of the polycrystalline diamond layer is 2.0 mm.
Abstract
Description
- This application is a continuation-in-part of International Patent Application No. PCT/CN2017/118761 with an international filing date of Dec. 26, 2017, designating the United States, now pending, and further claims foreign priority benefits to Chinese Patent Application No. 201721327355.7 filed Oct. 16, 2017. The contents of all of the aforementioned applications, including any intervening amendments thereto, are incorporated herein by reference. Inquiries from the public to applicants or assignees concerning this document or the related applications should be directed to: Matthias Scholl P.C., Attn.: Dr. Matthias Scholl Esq., 245 First Street, 18th Floor, Cambridge, Mass. 02142.
- This disclosure relates to the field of composite materials, and more particularly, to a polycrystalline diamond compact (PDC).
- Polycrystalline diamond compacts (PDCs) are composed of diamond and a cemented carbide substrate and are widely used in manufacturing of drill bits. However, conventional PDCs have a flat surface, exhibit relatively low working efficiency, and the cutting edges of the PDCs tend to break down.
- Disclosed is a polycrystalline diamond compact that has dual cutting edges.
- Disclosed is a polycrystalline diamond compact comprising a cemented carbide substrate and a polycrystalline diamond layer disposed on the cemented carbide substrate. The polycrystalline diamond layer is nonplanar and comprises a first curved surface, a second curved surface, and a side surface directly connected to the cemented carbide substrate. The first curved surface is connected to the second curved surface. The joint of the first curved surface and the second curved surface protrudes to form a first cutting edge. The joints of the first curved surface and the second curved surface and the side surface protrudes to form a plurality of second cutting edges.
- The first cutting edge has an included angle formed by an edge of the first curved surface and an edge of the second curved surface, and the included angle is between 10 and 179°.
- The second cutting edges each have an included angle formed by the first curved surface and the side surface or the second curved surface and the side surface, and the included angle is between 10 and 179°.
- The polycrystalline diamond layer comprises a chamfer.
- The nonplanar polycrystalline diamond layer is formed by contact or non-contact processing or a combination thereof, such as electrical discharge machining, laser processing and so on.
- Advantages of the polycrystalline diamond compact in the disclosure are summarized as below. The design of the non-planar polycrystalline diamond layer improves the impact resistance of the polycrystalline diamond compact. The arrangement of the first and second cutting edges functioning as cutter teeth reduces the cutting resistance of the polycrystalline diamond compact. The polycrystalline diamond compact exhibits relatively high drilling efficiency, and no failure such as teeth collapse occurs.
-
FIG. 1 is a schematic diagram of a polycrystalline diamond compact according to one embodiment of the disclosure; and -
FIG. 2 is a left view of the polycrystalline diamond compact inFIG. 1 . - To further illustrate, examples detailing a polycrystalline diamond compact are described below. It should be noted that the following examples are intended to describe and not to limit the description.
-
FIGS. 1-2 shows a polycrystalline diamond compact comprising a cementedcarbide substrate 200 and apolycrystalline diamond layer 100 disposed on the cemented carbide substrate. Thepolycrystalline diamond layer 100 is nonplanar and comprises a firstcurved surface 101, a secondcurved surface 101′, and aside surface 300 connected to the cementedcarbide substrate 200. The firstcurved surface 101 is connected to the secondcurved surface 101′. A joint of the firstcurved surface 101 and the secondcurved surface 101′ protrudes to form afirst cutting edge 104. Joints of the firstcurved surface 101 or the secondcurved surface 101′ and theside surface 300 protrudes to form a plurality ofsecond cutting edges 103. Thepolycrystalline diamond layer 100 comprises achamfer 102 disposed between the first curved surface and the side surface, and between the second curved surface and the side surface. - Specifically, the polycrystalline diamond compact has a diameter of 15.88 mm and a height of 13.2 mm. The polycrystalline diamond compact is prepared by high temperature and high-pressure sintering combined with laser processing. The first cutting edge formed by an edge of the first curved surface and an edge of the second curved surface has an included angle of 148.5°. The second cutting edges formed by the first curved surface and the side surface or the second curved surface and the side surface is 169.3°. The chamber of the polycrystalline diamond layer has a width of 0.56 mm. The minimum thickness of the polycrystalline diamond layer is 2.0 mm.
- Cutting experiments are carried out using the polycrystalline diamond compact of the disclosure and a conventional polycrystalline diamond compact. The results show, in contrast to conventional polycrystalline diamond compacts, when using the first cutting edge of the polycrystalline diamond compact to grind a rock with a Rockwell hardness of 8-9 grade, the cutting resistance decreases by 38%, the removal efficiency of the rock increases by 56%, and no failure such as teeth collapse occurs.
- The results also show, in contrast to conventional polycrystalline diamond compacts, when using the second cutting edges of the polycrystalline diamond compact to grind a rock with a Rockwell hardness of 6 grade, the rock removal efficiency increases by 83% under the same grinding load, and no failure such as teeth collapse occurs.
- It will be obvious to those skilled in the art that changes and modifications may be made, and therefore, the aim in the appended claims is to cover all such changes and modifications.
Claims (4)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201721327355.7U CN207453880U (en) | 2017-10-16 | 2017-10-16 | A kind of multi-functional on-plane surface composite polycrystal-diamond for oil gas drilling |
CN201721327355.7 | 2017-10-16 | ||
PCT/CN2017/118761 WO2019075917A1 (en) | 2017-10-16 | 2017-12-26 | Multi-functional non-planar polycrystalline diamond composite for oil and gas drilling |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2017/118761 Continuation-In-Part WO2019075917A1 (en) | 2017-10-16 | 2017-12-26 | Multi-functional non-planar polycrystalline diamond composite for oil and gas drilling |
Publications (1)
Publication Number | Publication Date |
---|---|
US20190368276A1 true US20190368276A1 (en) | 2019-12-05 |
Family
ID=62252383
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/541,133 Abandoned US20190368276A1 (en) | 2017-10-16 | 2019-08-14 | Polycrystalline diamond compact |
Country Status (3)
Country | Link |
---|---|
US (1) | US20190368276A1 (en) |
CN (1) | CN207453880U (en) |
WO (1) | WO2019075917A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11578538B2 (en) | 2020-01-09 | 2023-02-14 | Schlumberger Technology Corporation | Cutting element with nonplanar face to improve cutting efficiency and durability |
USD997219S1 (en) * | 2021-10-14 | 2023-08-29 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a double-layer structure |
US11873684B2 (en) * | 2017-03-14 | 2024-01-16 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111720061B (en) * | 2019-03-19 | 2022-06-03 | 中国石油化工股份有限公司 | Non-planar cutting tooth, fixed tooth drill bit and method of making same |
CN110500039A (en) | 2019-07-10 | 2019-11-26 | 河南四方达超硬材料股份有限公司 | With the composite polycrystal-diamond extended |
CN110328372B (en) * | 2019-08-06 | 2021-07-02 | 金华中烨超硬材料有限公司 | Polycrystalline composite cutter and preparation process of polycrystalline diamond compact for 3C cutter |
CN111075357A (en) * | 2019-12-13 | 2020-04-28 | 深圳市海明润超硬材料股份有限公司 | Multi-surface arc-shaped diamond compact |
CN113482541B (en) * | 2021-08-17 | 2022-08-12 | 中国地质大学(北京) | High-stability PDC drill bit with non-planar teeth |
USD1006074S1 (en) | 2021-10-14 | 2023-11-28 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised triangular structure |
USD1006073S1 (en) | 2021-10-14 | 2023-11-28 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised surface sloping to a peripheral extension |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080264696A1 (en) * | 2005-12-20 | 2008-10-30 | Varel International, Ind., L.P. | Auto adaptable cutting structure |
CN201513124U (en) * | 2009-09-21 | 2010-06-23 | 深圳市海明润实业有限公司 | Plowing type diamond compound plate drill tooth |
US9371699B2 (en) * | 2011-10-26 | 2016-06-21 | Baker Hughes Incorporated | Plow-shaped cutting elements for earth-boring tools, earth-boring tools including such cutting elements, and related methods |
US10287825B2 (en) * | 2014-03-11 | 2019-05-14 | Smith International, Inc. | Cutting elements having non-planar surfaces and downhole cutting tools using such cutting elements |
CN204729011U (en) * | 2015-07-03 | 2015-10-28 | 河南四方达超硬材料股份有限公司 | A kind of low cutting resistance curved-surface structure composite polycrystal-diamond |
CN106703704A (en) * | 2016-12-09 | 2017-05-24 | 中国石油天然气集团公司 | Non-planar cutting tooth for improving rock breaking efficiency and diamond drill bit |
CN106984906B (en) * | 2017-05-04 | 2019-04-02 | 河南四方达超硬材料股份有限公司 | The laser processing of oil bit curved surface composite polycrystal-diamond |
-
2017
- 2017-10-16 CN CN201721327355.7U patent/CN207453880U/en active Active
- 2017-12-26 WO PCT/CN2017/118761 patent/WO2019075917A1/en active Application Filing
-
2019
- 2019-08-14 US US16/541,133 patent/US20190368276A1/en not_active Abandoned
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11873684B2 (en) * | 2017-03-14 | 2024-01-16 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact |
US11578538B2 (en) | 2020-01-09 | 2023-02-14 | Schlumberger Technology Corporation | Cutting element with nonplanar face to improve cutting efficiency and durability |
USD997219S1 (en) * | 2021-10-14 | 2023-08-29 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a double-layer structure |
Also Published As
Publication number | Publication date |
---|---|
CN207453880U (en) | 2018-06-05 |
WO2019075917A1 (en) | 2019-04-25 |
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Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SF DIAMOND CO., LTD., CHINA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ZHAO, DONGPENG;DU, WEIFENG;MA, SHANSHAN;AND OTHERS;REEL/FRAME:050057/0528 Effective date: 20190327 |
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Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER |
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STCB | Information on status: application discontinuation |
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