GB8811390D0 - Improvements in/relating to rotary drill bits - Google Patents

Improvements in/relating to rotary drill bits

Info

Publication number
GB8811390D0
GB8811390D0 GB888811390A GB8811390A GB8811390D0 GB 8811390 D0 GB8811390 D0 GB 8811390D0 GB 888811390 A GB888811390 A GB 888811390A GB 8811390 A GB8811390 A GB 8811390A GB 8811390 D0 GB8811390 D0 GB 8811390D0
Authority
GB
United Kingdom
Prior art keywords
relating
drill bits
rotary drill
rotary
bits
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Withdrawn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
GB888811390A
Other versions
GB2204625A (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
Reed Tool Co 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 Reed Tool Co Ltd filed Critical Reed Tool Co Ltd
Publication of GB8811390D0 publication Critical patent/GB8811390D0/en
Publication of GB2204625A publication Critical patent/GB2204625A/en
Withdrawn legal-status Critical Current

Links

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
    • E21B10/46—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Drilling Tools (AREA)
GB08811390A 1987-05-13 1988-05-13 Improvements in or relating to rotary drill bits Withdrawn GB2204625A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB878711255A GB8711255D0 (en) 1987-05-13 1987-05-13 Rotary drill bits

Publications (2)

Publication Number Publication Date
GB8811390D0 true GB8811390D0 (en) 1988-06-15
GB2204625A GB2204625A (en) 1988-11-16

Family

ID=10617240

Family Applications (2)

Application Number Title Priority Date Filing Date
GB878711255A Pending GB8711255D0 (en) 1987-05-13 1987-05-13 Rotary drill bits
GB08811390A Withdrawn GB2204625A (en) 1987-05-13 1988-05-13 Improvements in or relating to rotary drill bits

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB878711255A Pending GB8711255D0 (en) 1987-05-13 1987-05-13 Rotary drill bits

Country Status (2)

Country Link
EP (1) EP0291314A3 (en)
GB (2) GB8711255D0 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4981184A (en) * 1988-11-21 1991-01-01 Smith International, Inc. Diamond drag bit for soft formations
US5314033A (en) * 1992-02-18 1994-05-24 Baker Hughes Incorporated Drill bit having combined positive and negative or neutral rake cutters
GB2273946B (en) * 1992-12-31 1996-10-09 Camco Drilling Group Ltd Improvements in or relating to rotary drill bits
GB2274474B (en) * 1993-01-21 1996-07-31 Camco Drilling Group Ltd Improvements in or relating to cutter assemblies for rotary drill bits
FR2735522B1 (en) * 1995-06-16 1997-09-05 Total Sa MONOBLOCK DRILLING TOOL SIZE
US5667028A (en) * 1995-08-22 1997-09-16 Smith International, Inc. Multiple diamond layer polycrystalline diamond composite cutters
BE1010801A3 (en) 1996-12-16 1999-02-02 Dresser Ind Drilling tool and / or core.
US5979578A (en) 1997-06-05 1999-11-09 Smith International, Inc. Multi-layer, multi-grade multiple cutting surface PDC cutter
US6510906B1 (en) * 1999-11-29 2003-01-28 Baker Hughes Incorporated Impregnated bit with PDC cutters in cone area
US6843333B2 (en) 1999-11-29 2005-01-18 Baker Hughes Incorporated Impregnated rotary drag bit
US7726420B2 (en) 2004-04-30 2010-06-01 Smith International, Inc. Cutter having shaped working surface with varying edge chamfer
CA2535387C (en) 2005-02-08 2013-05-07 Smith International, Inc. Thermally stable polycrystalline diamond cutting elements and bits incorporating the same
US8028771B2 (en) 2007-02-06 2011-10-04 Smith International, Inc. Polycrystalline diamond constructions having improved thermal stability
US7942219B2 (en) 2007-03-21 2011-05-17 Smith International, Inc. Polycrystalline diamond constructions having improved thermal stability
US7730976B2 (en) 2007-10-31 2010-06-08 Baker Hughes Incorporated Impregnated rotary drag bit and related methods
US9297211B2 (en) 2007-12-17 2016-03-29 Smith International, Inc. Polycrystalline diamond construction with controlled gradient metal content
US8083012B2 (en) 2008-10-03 2011-12-27 Smith International, Inc. Diamond bonded construction with thermally stable region
GB2481957B (en) * 2009-05-06 2014-10-15 Smith International Methods of making and attaching tsp material for forming cutting elements, cutting elements having such tsp material and bits incorporating such cutting
CN103492661A (en) 2011-04-26 2014-01-01 史密斯国际有限公司 Polycrystalline diamond compact cutters with conic shaped end
MX336818B (en) 2011-04-26 2016-02-02 Smith International Methods of attaching rolling cutters in fixed cutter bits using sleeve, compression spring, and/or pin(s)/ball(s).
CN108431361B (en) 2015-12-14 2022-05-03 史密斯国际有限公司 Direct casting of superhard inserts in bit bodies

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3106973A (en) * 1960-09-26 1963-10-15 Christensen Diamond Prod Co Rotary drill bits
US4148368A (en) * 1976-09-27 1979-04-10 Smith International, Inc. Rock bit with wear resistant inserts
US4339009A (en) * 1979-03-27 1982-07-13 Busby Donald W Button assembly for rotary rock cutters
ZA806249B (en) * 1979-11-19 1982-01-27 Gen Electric Compacts for diamond drill and saw applications
US4660659A (en) * 1983-02-22 1987-04-28 Nl Industries, Inc. Drag type drill bit
US4529047A (en) * 1983-02-24 1985-07-16 Norton Christensen, Inc. Cutting tooth and a rotating bit having a fully exposed polycrystalline diamond element
US4491188A (en) * 1983-03-07 1985-01-01 Norton Christensen, Inc. Diamond cutting element in a rotating bit
US4499959A (en) * 1983-03-14 1985-02-19 Christensen, Inc. Tooth configuration for an earth boring bit
GB2138864B (en) * 1983-04-28 1986-07-30 Sumitomo Metal Mining Co Roller drill bits
EP0156235B1 (en) * 1984-03-26 1989-05-24 Eastman Christensen Company Multi-component cutting element using consolidated rod-like polycrystalline diamond
GB8418481D0 (en) * 1984-07-19 1984-08-22 Nl Petroleum Prod Rotary drill bits
US4646857A (en) * 1985-10-24 1987-03-03 Reed Tool Company Means to secure cutting elements on drag type drill bits
GB8612012D0 (en) * 1986-05-16 1986-06-25 Nl Petroleum Prod Rotary drill bits

Also Published As

Publication number Publication date
EP0291314A3 (en) 1989-09-20
EP0291314A2 (en) 1988-11-17
GB2204625A (en) 1988-11-16
GB8711255D0 (en) 1987-06-17

Similar Documents

Publication Publication Date Title
GB2198169B (en) Improvements in or relating to rotary drill bits
GB2238334B (en) Improvements in or relating to rotary drill bits
GB2218131B (en) Improvements in or relating to rotary drill bits
GB2197676B (en) Improvements in or relating to rotary drill bits
GB2238336B (en) Improvements in or relating to rotary drill bits
EP0219992A3 (en) Improvements in or relating to rotary drill bits
GB2150616B (en) Improvements in or relating to rotary drill bits
GB9025464D0 (en) Improvements in or relating to rotary drill bits
GB8811390D0 (en) Improvements in/relating to rotary drill bits
GB2190024B (en) Improvements in or relating to rotary drill bits
GB2211874B (en) Improvements in or relating to the manufacture of rotary drill bits
DE3569403D1 (en) Improvements in rotary drill bits
DE3664799D1 (en) Improvements in or relating to rotary drill bits
DE3570718D1 (en) Improvements in or relating to rotary drill bits
GB2148978B (en) Improvements in or relating to rotary drill bits
GB2211873B (en) Improvements in or relating to the manufacture of rotary drill bits
GB2190120B (en) Improvements in or relating to rotary drill bits
GB2211766B (en) Improvements in or relating to the manufacture of rotary drill bits
GB2181173B (en) Improvements in or relating to rotary drill bits
GB2211872B (en) Improvements in or relating to cutter assemblies for rotary drill bits
GB9109745D0 (en) Improvements in or relating to rotary drill bits

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)