GB2300657B - Improvements in or relating to rotary drill bits - Google Patents

Improvements in or relating to rotary drill bits

Info

Publication number
GB2300657B
GB2300657B GB9608732A GB9608732A GB2300657B GB 2300657 B GB2300657 B GB 2300657B GB 9608732 A GB9608732 A GB 9608732A GB 9608732 A GB9608732 A GB 9608732A GB 2300657 B GB2300657 B GB 2300657B
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 - Fee Related
Application number
GB9608732A
Other versions
GB9608732D0 (en
GB2300657A (en
Inventor
Douglas Caraway
Graham Watson
Alex Newton
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
Priority claimed from GBGB9509555.0A external-priority patent/GB9509555D0/en
Application filed by Camco Drilling Group Ltd filed Critical Camco Drilling Group Ltd
Priority to GB9608732A priority Critical patent/GB2300657B/en
Publication of GB9608732D0 publication Critical patent/GB9608732D0/en
Publication of GB2300657A publication Critical patent/GB2300657A/en
Application granted granted Critical
Publication of GB2300657B publication Critical patent/GB2300657B/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
    • E21B10/54—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 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
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • 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
    • E21B10/60—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)
GB9608732A 1995-05-11 1996-04-26 Improvements in or relating to rotary drill bits Expired - Fee Related GB2300657B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9608732A GB2300657B (en) 1995-05-11 1996-04-26 Improvements in or relating to rotary drill bits

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9509555.0A GB9509555D0 (en) 1995-05-11 1995-05-11 Improvements in or relating to rotary drill bits
GB9608732A GB2300657B (en) 1995-05-11 1996-04-26 Improvements in or relating to rotary drill bits

Publications (3)

Publication Number Publication Date
GB9608732D0 GB9608732D0 (en) 1996-07-03
GB2300657A GB2300657A (en) 1996-11-13
GB2300657B true GB2300657B (en) 1998-09-02

Family

ID=26307017

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9608732A Expired - Fee Related GB2300657B (en) 1995-05-11 1996-04-26 Improvements in or relating to rotary drill bits

Country Status (1)

Country Link
GB (1) GB2300657B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5794725A (en) * 1996-04-12 1998-08-18 Baker Hughes Incorporated Drill bits with enhanced hydraulic flow characteristics
US6125947A (en) * 1997-09-19 2000-10-03 Baker Hughes Incorporated Earth-boring drill bits with enhanced formation cuttings removal features and methods of drilling

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277760A (en) * 1993-05-08 1994-11-09 Camco Drilling Group Ltd Rotary earth boring drill bits

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277760A (en) * 1993-05-08 1994-11-09 Camco Drilling Group Ltd Rotary earth boring drill bits

Also Published As

Publication number Publication date
GB9608732D0 (en) 1996-07-03
GB2300657A (en) 1996-11-13

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Legal Events

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

Effective date: 20150426