EP0878602A3 - Cutting elements faced with superhard material - Google Patents

Cutting elements faced with superhard material Download PDF

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Publication number
EP0878602A3
EP0878602A3 EP98303775A EP98303775A EP0878602A3 EP 0878602 A3 EP0878602 A3 EP 0878602A3 EP 98303775 A EP98303775 A EP 98303775A EP 98303775 A EP98303775 A EP 98303775A EP 0878602 A3 EP0878602 A3 EP 0878602A3
Authority
EP
European Patent Office
Prior art keywords
grooves
ribs
facing table
cutting elements
series
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.)
Withdrawn
Application number
EP98303775A
Other languages
German (de)
French (fr)
Other versions
EP0878602A2 (en
Inventor
Nigel Dennis Griffin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ReedHycalog UK Ltd
Original Assignee
Camco International UK Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Camco International UK Ltd filed Critical Camco International UK Ltd
Publication of EP0878602A2 publication Critical patent/EP0878602A2/en
Publication of EP0878602A3 publication Critical patent/EP0878602A3/en
Withdrawn legal-status Critical Current

Links

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
    • E21B10/573—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
    • E21B10/5735—Interface between the substrate and the cutting element

Abstract

A preform element, such as may be used as a cutting element in a drag-type rotary drill bit, comprises a polycrystalline diamond facing table bonded to a tungsten carbide substrate. The rear face of the facing table is formed with a series of elongate ribs and grooves, and the front face of the substrate is formed with a series of elongate ribs and grooves which interengage the grooves and ribs respectively in the facing table. The ribs and grooves on each surface include ribs which are spaced from adjacent grooves so that the part ofthe surface which extends from the bottom of a groove to the apex ofthe adjacent rib is non-linear and discontinuous. The discontinuity between each rib and groove may be an intervening surface portion which is flat, inclined, curved or otherwise shaped.
Figure 00000001
EP98303775A 1997-05-16 1998-05-14 Cutting elements faced with superhard material Withdrawn EP0878602A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9709861.0A GB9709861D0 (en) 1997-05-16 1997-05-16 Elements faced with superhard material
GB9709861 1997-05-16

Publications (2)

Publication Number Publication Date
EP0878602A2 EP0878602A2 (en) 1998-11-18
EP0878602A3 true EP0878602A3 (en) 1999-08-25

Family

ID=10812351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98303775A Withdrawn EP0878602A3 (en) 1997-05-16 1998-05-14 Cutting elements faced with superhard material

Country Status (3)

Country Link
EP (1) EP0878602A3 (en)
GB (2) GB9709861D0 (en)
ZA (1) ZA984058B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6527069B1 (en) * 1998-06-25 2003-03-04 Baker Hughes Incorporated Superabrasive cutter having optimized table thickness and arcuate table-to-substrate interfaces
RU2013102914A (en) * 2010-06-24 2014-07-27 Бейкер Хьюз Инкорпорейтед CUTTING ELEMENTS FOR DRILLING TOOLS, DRILLING TOOLS WITH SUCH CUTTING ELEMENTS AND METHODS FOR FORMING CUTTING ELEMENTS FOR DRILLING TOOLS
US9138872B2 (en) 2013-03-13 2015-09-22 Diamond Innovations, Inc. Polycrystalline diamond drill blanks with improved carbide interface geometries
CN103670284A (en) * 2013-12-03 2014-03-26 常州深倍超硬材料有限公司 Impact-resisting wear resisting tool

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0133386A2 (en) * 1983-06-22 1985-02-20 Megadiamond Industries Inc. Polycrystalline diamond body with enhanced surface irregularities and methods of making the same
US4784023A (en) * 1985-12-05 1988-11-15 Diamant Boart-Stratabit (Usa) Inc. Cutting element having composite formed of cemented carbide substrate and diamond layer and method of making same
US5120327A (en) * 1991-03-05 1992-06-09 Diamant-Boart Stratabit (Usa) Inc. Cutting composite formed of cemented carbide substrate and diamond layer
GB2270493A (en) * 1992-09-11 1994-03-16 Gen Electric Encapsulation of segmented diamond compact
GB2283772A (en) * 1993-11-10 1995-05-17 Camco Drilling Group Ltd Improvements in or relating to elements faced with superhard material
EP0733777A2 (en) * 1995-03-24 1996-09-25 Camco Drilling Group Limited Cutting insert for rotary drag drill bit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5011515B1 (en) * 1989-08-07 1999-07-06 Robert H Frushour Composite polycrystalline diamond compact with improved impact resistance
US5355969A (en) * 1993-03-22 1994-10-18 U.S. Synthetic Corporation Composite polycrystalline cutting element with improved fracture and delamination resistance

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0133386A2 (en) * 1983-06-22 1985-02-20 Megadiamond Industries Inc. Polycrystalline diamond body with enhanced surface irregularities and methods of making the same
US4784023A (en) * 1985-12-05 1988-11-15 Diamant Boart-Stratabit (Usa) Inc. Cutting element having composite formed of cemented carbide substrate and diamond layer and method of making same
US5120327A (en) * 1991-03-05 1992-06-09 Diamant-Boart Stratabit (Usa) Inc. Cutting composite formed of cemented carbide substrate and diamond layer
GB2270493A (en) * 1992-09-11 1994-03-16 Gen Electric Encapsulation of segmented diamond compact
GB2283772A (en) * 1993-11-10 1995-05-17 Camco Drilling Group Ltd Improvements in or relating to elements faced with superhard material
EP0733777A2 (en) * 1995-03-24 1996-09-25 Camco Drilling Group Limited Cutting insert for rotary drag drill bit

Also Published As

Publication number Publication date
GB2325481A (en) 1998-11-25
GB9709861D0 (en) 1997-07-09
GB9810215D0 (en) 1998-07-08
EP0878602A2 (en) 1998-11-18
GB2325481B (en) 2001-12-12
ZA984058B (en) 1998-11-25

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