GB9608077D0 - Improvements in or relating to elements faced with superhard material - Google Patents

Improvements in or relating to elements faced with superhard material

Info

Publication number
GB9608077D0
GB9608077D0 GBGB9608077.5A GB9608077A GB9608077D0 GB 9608077 D0 GB9608077 D0 GB 9608077D0 GB 9608077 A GB9608077 A GB 9608077A GB 9608077 D0 GB9608077 D0 GB 9608077D0
Authority
GB
United Kingdom
Prior art keywords
relating
superhard material
elements faced
faced
elements
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.)
Granted
Application number
GBGB9608077.5A
Other versions
GB2300016B (en
GB2300016A (en
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.)
Camco Drilling Group Ltd
Original Assignee
Camco Drilling Group 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 Drilling Group Ltd filed Critical Camco Drilling Group Ltd
Publication of GB9608077D0 publication Critical patent/GB9608077D0/en
Publication of GB2300016A publication Critical patent/GB2300016A/en
Application granted granted Critical
Publication of GB2300016B publication Critical patent/GB2300016B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
GB9608077A 1995-04-22 1996-04-18 Improvements in or relating to elements faced with superhard material Expired - Fee Related GB2300016B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9508226.9A GB9508226D0 (en) 1995-04-22 1995-04-22 Improvements in or relating to elements faced with superhard material

Publications (3)

Publication Number Publication Date
GB9608077D0 true GB9608077D0 (en) 1996-06-19
GB2300016A GB2300016A (en) 1996-10-23
GB2300016B GB2300016B (en) 1998-12-02

Family

ID=10773377

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9508226.9A Pending GB9508226D0 (en) 1995-04-22 1995-04-22 Improvements in or relating to elements faced with superhard material
GB9608077A Expired - Fee Related GB2300016B (en) 1995-04-22 1996-04-18 Improvements in or relating to elements faced with superhard material

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9508226.9A Pending GB9508226D0 (en) 1995-04-22 1995-04-22 Improvements in or relating to elements faced with superhard material

Country Status (4)

Country Link
EP (1) EP0738823B1 (en)
DE (1) DE69622311T2 (en)
GB (2) GB9508226D0 (en)
ZA (1) ZA963120B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6571891B1 (en) * 1996-04-17 2003-06-03 Baker Hughes Incorporated Web cutter
US6082474A (en) * 1997-07-26 2000-07-04 Camco International Limited Elements faced with superhard material
DE69820349T2 (en) * 1997-07-26 2004-10-28 Camco International (Uk) Ltd., Stonehouse Improvements to cutting elements with a surface made of super hard material
US6202771B1 (en) * 1997-09-23 2001-03-20 Baker Hughes Incorporated Cutting element with controlled superabrasive contact area, drill bits so equipped
GB9809690D0 (en) 1998-05-08 1998-07-01 Camco Int Uk Ltd Improvements in elements faced with superhard material
US6488106B1 (en) 2001-02-05 2002-12-03 Varel International, Inc. Superabrasive cutting element
US9138872B2 (en) 2013-03-13 2015-09-22 Diamond Innovations, Inc. Polycrystalline diamond drill blanks with improved carbide interface geometries

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
GB2273306B (en) * 1992-12-10 1996-12-18 Camco Drilling Group Ltd Improvements in or relating to cutting elements for rotary drill bits
US5351772A (en) * 1993-02-10 1994-10-04 Baker Hughes, Incorporated Polycrystalline diamond cutting element
GB2308143B (en) * 1993-11-10 1998-02-25 Camco Drilling Group Ltd Improvements in or relating to elements faced with superhard material
GB2283772B (en) * 1993-11-10 1997-01-15 Camco Drilling Group Ltd Improvements in or relating to elements faced with superhard material
GB9412247D0 (en) * 1994-06-18 1994-08-10 Camco Drilling Group Ltd Improvements in or relating to elements faced with superhard material

Also Published As

Publication number Publication date
GB9508226D0 (en) 1995-06-07
GB2300016B (en) 1998-12-02
GB2300016A (en) 1996-10-23
EP0738823B1 (en) 2002-07-17
ZA963120B (en) 1996-10-24
EP0738823A3 (en) 1997-11-05
DE69622311D1 (en) 2002-08-22
DE69622311T2 (en) 2003-02-20
EP0738823A2 (en) 1996-10-23

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20060418