GB1269579A - Rotary drill bits - Google Patents

Rotary drill bits

Info

Publication number
GB1269579A
GB1269579A GB208670A GB208670A GB1269579A GB 1269579 A GB1269579 A GB 1269579A GB 208670 A GB208670 A GB 208670A GB 208670 A GB208670 A GB 208670A GB 1269579 A GB1269579 A GB 1269579A
Authority
GB
United Kingdom
Prior art keywords
drill bits
rotary drill
jan
inch
rollers
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
Application number
GB208670A
Inventor
Eugene Gray Ott
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.)
Dresser Industries Inc
Original Assignee
Dresser Industries Inc
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 Dresser Industries Inc filed Critical Dresser Industries Inc
Publication of GB1269579A publication Critical patent/GB1269579A/en
Expired 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
    • E21B10/08—Roller bits
    • E21B10/16—Roller bits characterised by tooth form or arrangement
    • 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
    • E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
    • E21B10/52—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type with chisel- or button-type inserts

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)

Abstract

1,269,579. Boring earth &c. DRESSER INDUSTRIES Inc. 15 Jan., 1970 [28 Jan., 1969], No. 2086/70. Heading E1F. In a roller bit, the axes of the rollers 26, 28, 30 do not intersect each other, and the inserts 46, 52, 56, 58 project from the surfaces of their rollers for a distance of at least “ of an inch and preferably not more than 9/16 of an inch.
GB208670A 1969-01-28 1970-01-15 Rotary drill bits Expired GB1269579A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US79451569A 1969-01-28 1969-01-28

Publications (1)

Publication Number Publication Date
GB1269579A true GB1269579A (en) 1972-04-06

Family

ID=25162862

Family Applications (1)

Application Number Title Priority Date Filing Date
GB208670A Expired GB1269579A (en) 1969-01-28 1970-01-15 Rotary drill bits

Country Status (3)

Country Link
CA (1) CA938605A (en)
FR (1) FR2029550B1 (en)
GB (1) GB1269579A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2327443A (en) * 1997-06-30 1999-01-27 Smith International Drill bit with canted gage insert

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4187922A (en) * 1978-05-12 1980-02-12 Dresser Industries, Inc. Varied pitch rotary rock bit
DE69215746D1 (en) * 1991-05-01 1997-01-23 Smith International Rock drill bit
FR2677699B1 (en) * 1991-06-11 1997-03-14 Total Petroles DRILLING TOOL WITH ROTARY TAPERED ROLLERS.
US6241035B1 (en) 1998-12-07 2001-06-05 Smith International, Inc. Superhard material enhanced inserts for earth-boring bits

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2038386A (en) * 1935-03-09 1936-04-21 Hughes Tool Co Cutter for well drills
US2148372A (en) * 1936-03-21 1939-02-21 Hughes Tool Co Offset tricone bit
US2774571A (en) * 1954-07-06 1956-12-18 Hughes Tool Co Cone type well drill
US3134447A (en) * 1962-01-31 1964-05-26 Hughes Tool Co Rolling cone rock bit with wraparound spearpoints
US3388757A (en) * 1967-03-23 1968-06-18 Smith Ind International Inc Hardened inserts for drill bits

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2327443A (en) * 1997-06-30 1999-01-27 Smith International Drill bit with canted gage insert
GB2327443B (en) * 1997-06-30 2001-12-19 Smith International Drill bit, cutting insert and method of manufacture

Also Published As

Publication number Publication date
CA938605A (en) 1973-12-18
FR2029550A1 (en) 1970-10-23
FR2029550B1 (en) 1973-12-21

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