GB9119305D0 - Improvements in or relating to the manufacture of cutting structures for rotary drill bits - Google Patents

Improvements in or relating to the manufacture of cutting structures for rotary drill bits

Info

Publication number
GB9119305D0
GB9119305D0 GB919119305A GB9119305A GB9119305D0 GB 9119305 D0 GB9119305 D0 GB 9119305D0 GB 919119305 A GB919119305 A GB 919119305A GB 9119305 A GB9119305 A GB 9119305A GB 9119305 D0 GB9119305 D0 GB 9119305D0
Authority
GB
United Kingdom
Prior art keywords
relating
manufacture
drill bits
rotary drill
cutting structures
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
GB919119305A
Other versions
GB2247855A (en
GB2247855B (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 GB9119305D0 publication Critical patent/GB9119305D0/en
Publication of GB2247855A publication Critical patent/GB2247855A/en
Application granted granted Critical
Publication of GB2247855B publication Critical patent/GB2247855B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • B23K31/025—Connecting cutting edges or the like to tools; Attaching reinforcements to workpieces, e.g. wear-resisting zones to tableware
    • 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
GB9119305A 1990-09-12 1991-09-10 Improvements in or relating to the manufacture of cutting structures for rotary drill bits Expired - Fee Related GB2247855B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB909019914A GB9019914D0 (en) 1990-09-12 1990-09-12 Improvements in or relating to the manufacture of cutting structures for rotary drill bits

Publications (3)

Publication Number Publication Date
GB9119305D0 true GB9119305D0 (en) 1991-10-23
GB2247855A GB2247855A (en) 1992-03-18
GB2247855B GB2247855B (en) 1994-09-07

Family

ID=10682068

Family Applications (2)

Application Number Title Priority Date Filing Date
GB909019914A Pending GB9019914D0 (en) 1990-09-12 1990-09-12 Improvements in or relating to the manufacture of cutting structures for rotary drill bits
GB9119305A Expired - Fee Related GB2247855B (en) 1990-09-12 1991-09-10 Improvements in or relating to the manufacture of cutting structures for rotary drill bits

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB909019914A Pending GB9019914D0 (en) 1990-09-12 1990-09-12 Improvements in or relating to the manufacture of cutting structures for rotary drill bits

Country Status (1)

Country Link
GB (2) GB9019914D0 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB624164A (en) * 1945-10-10 1949-05-27 Sandvikens Jernverks Ab Improvements in percussion drilling tools having sintered carbide alloy inserts and in the method of making the same
GB2229124B (en) * 1989-02-16 1993-03-31 Reed Tool Co Improvements in or relating to methods of manufacturing cutter assemblies for rotary drill bits

Also Published As

Publication number Publication date
GB2247855A (en) 1992-03-18
GB9019914D0 (en) 1990-10-24
GB2247855B (en) 1994-09-07

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Legal Events

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

Effective date: 19950910