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FR1438748A - Improvements to drill bits - Google Patents

Improvements to drill bits

Info

Publication number
FR1438748A
FR1438748A FR21702A FR21702A FR1438748A FR 1438748 A FR1438748 A FR 1438748A FR 21702 A FR21702 A FR 21702A FR 21702 A FR21702 A FR 21702A FR 1438748 A FR1438748 A FR 1438748A
Authority
FR
France
Prior art keywords
drill bits
drill
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
Application number
FR21702A
Other languages
French (fr)
Inventor
Frank Whittle
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 filed Critical
Priority to FR21702A priority Critical patent/FR1438748A/en
Application granted granted Critical
Publication of FR1438748A publication Critical patent/FR1438748A/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
    • E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
    • E21B10/24—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details
    • 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
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/28—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with non-expansible roller cutters
    • 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
    • E21B10/18—Roller bits characterised by conduits or nozzles for drilling fluids

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)
FR21702A 1965-06-22 1965-06-22 Improvements to drill bits Expired FR1438748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR21702A FR1438748A (en) 1965-06-22 1965-06-22 Improvements to drill bits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR21702A FR1438748A (en) 1965-06-22 1965-06-22 Improvements to drill bits

Publications (1)

Publication Number Publication Date
FR1438748A true FR1438748A (en) 1966-05-13

Family

ID=8582694

Family Applications (1)

Application Number Title Priority Date Filing Date
FR21702A Expired FR1438748A (en) 1965-06-22 1965-06-22 Improvements to drill bits

Country Status (1)

Country Link
FR (1) FR1438748A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0274265A2 (en) * 1987-01-06 1988-07-13 DARRON TOOL & ENGINEERING (SHEFFIELD) LIMITED Roller reamer assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0274265A2 (en) * 1987-01-06 1988-07-13 DARRON TOOL & ENGINEERING (SHEFFIELD) LIMITED Roller reamer assembly
EP0274265A3 (en) * 1987-01-06 1989-09-06 DARRON TOOL & ENGINEERING (SHEFFIELD) LIMITED Roller reamer assembly

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