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GB2359838B - Improvements in or relating to rotary drill bits - Google Patents

Improvements in or relating to rotary drill bits

Info

Publication number
GB2359838B
GB2359838B GB0113284A GB0113284A GB2359838B GB 2359838 B GB2359838 B GB 2359838B GB 0113284 A GB0113284 A GB 0113284A GB 0113284 A GB0113284 A GB 0113284A GB 2359838 B GB2359838 B GB 2359838B
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.)
Expired - Lifetime
Application number
GB0113284A
Other versions
GB2359838A (en
GB0113284D0 (en
Inventor
Malcolm Roy Taylor
Steven Taylor
Dean Travers Watson
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
Priority claimed from GBGB9708022.0A external-priority patent/GB9708022D0/en
Application filed by Camco International UK Ltd filed Critical Camco International UK Ltd
Publication of GB0113284D0 publication Critical patent/GB0113284D0/en
Publication of GB2359838A publication Critical patent/GB2359838A/en
Application granted granted Critical
Publication of GB2359838B publication Critical patent/GB2359838B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
    • E21B10/55—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits with preformed cutting elements
    • 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
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
GB0113284A 1997-04-21 1998-04-17 Improvements in or relating to rotary drill bits Expired - Lifetime GB2359838B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9708022.0A GB9708022D0 (en) 1997-04-21 1997-04-21 Curved blades and gauge
GB9808135A GB2325014B (en) 1997-04-21 1998-04-17 Improvements in or relating to rotary drill bits

Publications (3)

Publication Number Publication Date
GB0113284D0 GB0113284D0 (en) 2001-07-25
GB2359838A GB2359838A (en) 2001-09-05
GB2359838B true GB2359838B (en) 2002-03-13

Family

ID=26311418

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0113284A Expired - Lifetime GB2359838B (en) 1997-04-21 1998-04-17 Improvements in or relating to rotary drill bits

Country Status (1)

Country Link
GB (1) GB2359838B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2292163A (en) * 1994-08-10 1996-02-14 Smith International Drill bit having enhanced cutting structure and stabilizing features
WO1996024744A1 (en) * 1995-02-07 1996-08-15 Brit Bit Limited Improvements in or relating to drill bits
WO1998021441A1 (en) * 1996-11-12 1998-05-22 Baroid Technology Inc. Steel-bodied bit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2292163A (en) * 1994-08-10 1996-02-14 Smith International Drill bit having enhanced cutting structure and stabilizing features
WO1996024744A1 (en) * 1995-02-07 1996-08-15 Brit Bit Limited Improvements in or relating to drill bits
WO1998021441A1 (en) * 1996-11-12 1998-05-22 Baroid Technology Inc. Steel-bodied bit

Also Published As

Publication number Publication date
GB2359838A (en) 2001-09-05
GB0113284D0 (en) 2001-07-25

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20180416