GB2294071B - Improvements in or relating to rotary drill bits - Google Patents

Improvements in or relating to rotary drill bits

Info

Publication number
GB2294071B
GB2294071B GB9519862A GB9519862A GB2294071B GB 2294071 B GB2294071 B GB 2294071B GB 9519862 A GB9519862 A GB 9519862A GB 9519862 A GB9519862 A GB 9519862A GB 2294071 B GB2294071 B GB 2294071B
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
GB9519862A
Other versions
GB2294071A (en
GB9519862D0 (en
Inventor
Alex Newton
John Fuller
Andrew Murdock
Daniel J Sarik
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 GB9420838A external-priority patent/GB9420838D0/en
Application filed by Camco Drilling Group Ltd filed Critical Camco Drilling Group Ltd
Priority to GB9519862A priority Critical patent/GB2294071B/en
Publication of GB9519862D0 publication Critical patent/GB9519862D0/en
Publication of GB2294071A publication Critical patent/GB2294071A/en
Application granted granted Critical
Publication of GB2294071B publication Critical patent/GB2294071B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1092—Gauge section of drill bits
    • 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
    • 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
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1057—Centralising devices with rollers or with a relatively rotating sleeve
    • E21B17/1064—Pipes or rods with a relatively rotating sleeve

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)
GB9519862A 1994-10-15 1995-09-29 Improvements in or relating to rotary drill bits Expired - Fee Related GB2294071B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9519862A GB2294071B (en) 1994-10-15 1995-09-29 Improvements in or relating to rotary drill bits

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9420838A GB9420838D0 (en) 1994-10-15 1994-10-15 Improvements in or relating to rotary drill bits
GB9519862A GB2294071B (en) 1994-10-15 1995-09-29 Improvements in or relating to rotary drill bits

Publications (3)

Publication Number Publication Date
GB9519862D0 GB9519862D0 (en) 1995-11-29
GB2294071A GB2294071A (en) 1996-04-17
GB2294071B true GB2294071B (en) 1998-04-29

Family

ID=26305818

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9519862A Expired - Fee Related GB2294071B (en) 1994-10-15 1995-09-29 Improvements in or relating to rotary drill bits

Country Status (1)

Country Link
GB (1) GB2294071B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6112836A (en) * 1997-09-08 2000-09-05 Baker Hughes Incorporated Rotary drill bits employing tandem gage pad arrangement
US6173797B1 (en) 1997-09-08 2001-01-16 Baker Hughes Incorporated Rotary drill bits for directional drilling employing movable cutters and tandem gage pad arrangement with active cutting elements and having up-drill capability
US5967247A (en) * 1997-09-08 1999-10-19 Baker Hughes Incorporated Steerable rotary drag bit with longitudinally variable gage aggressiveness
US6006845A (en) * 1997-09-08 1999-12-28 Baker Hughes Incorporated Rotary drill bits for directional drilling employing tandem gage pad arrangement with reaming capability
EP1012438A1 (en) * 1997-09-08 2000-06-28 Baker Hughes Incorporated Gage pad arrangements for rotary drill bits
US6138780A (en) * 1997-09-08 2000-10-31 Baker Hughes Incorporated Drag bit with steel shank and tandem gage pads
US6321862B1 (en) 1997-09-08 2001-11-27 Baker Hughes Incorporated Rotary drill bits for directional drilling employing tandem gage pad arrangement with cutting elements and up-drill capability
GB2367573B (en) * 1997-09-19 2002-05-29 Baker Hughes Inc Earth-boring drill bits with enhanced formation cuttings removal features and methods of drilling
CA2680894C (en) * 2008-10-09 2015-11-17 Andergauge Limited Drilling method
GB2486898A (en) 2010-12-29 2012-07-04 Nov Downhole Eurasia Ltd A downhole tool with at least one extendable offset cutting member for reaming a bore
CN103233683B (en) * 2013-04-12 2015-06-10 成都保瑞特钻头有限公司 Device for correcting well wall and enhancing drill gauge protection effect through rolling
CN107701112B (en) * 2017-09-24 2024-03-01 深圳市阿特拉能源技术有限公司 A high-efficient PDC drill bit for geological drilling

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB271839A (en) * 1926-05-25 1928-03-29 U S Tool Company Improvements relating to the hydraulic rotary system of well drilling
US4384747A (en) * 1981-03-16 1983-05-24 Hughes Tool Company Bearing for a shaft cutter stabilizer
GB2238335A (en) * 1989-11-25 1991-05-29 Reed Tool Co Improvements in or relating to rotary drill bits

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB271839A (en) * 1926-05-25 1928-03-29 U S Tool Company Improvements relating to the hydraulic rotary system of well drilling
US4384747A (en) * 1981-03-16 1983-05-24 Hughes Tool Company Bearing for a shaft cutter stabilizer
GB2238335A (en) * 1989-11-25 1991-05-29 Reed Tool Co Improvements in or relating to rotary drill bits

Also Published As

Publication number Publication date
GB2294071A (en) 1996-04-17
GB9519862D0 (en) 1995-11-29

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Legal Events

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

Effective date: 20060929