FR2147791A1 - Bore-hole drill - with cutting element faces disposed at pre determined optimum angles to drilling axis - Google Patents

Bore-hole drill - with cutting element faces disposed at pre determined optimum angles to drilling axis

Info

Publication number
FR2147791A1
FR2147791A1 FR7124155A FR7124155A FR2147791A1 FR 2147791 A1 FR2147791 A1 FR 2147791A1 FR 7124155 A FR7124155 A FR 7124155A FR 7124155 A FR7124155 A FR 7124155A FR 2147791 A1 FR2147791 A1 FR 2147791A1
Authority
FR
France
Prior art keywords
cutting element
drilling axis
bore
cutting elements
hole drill
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.)
Granted
Application number
FR7124155A
Other languages
French (fr)
Other versions
FR2147791B1 (en
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.)
PRECIDIA
Original Assignee
PRECIDIA
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 PRECIDIA filed Critical PRECIDIA
Priority to FR7124155A priority Critical patent/FR2147791A1/en
Publication of FR2147791A1 publication Critical patent/FR2147791A1/en
Application granted granted Critical
Publication of FR2147791B1 publication Critical patent/FR2147791B1/fr
Granted 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

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

The cutting elements of a borehole drilling tool may be all identical, e.g. cylinders of hard metal or carbide aggregates, and the angles of the cutting faces, (which may be coated e.g. with diamond powder) to the drilling axis and/or the plane of rotation, are all set as predetermined according to the required duty, i.e. scraping, abrasion, or penetration of rock. The head of the drill is divided into several sectors, by grooves, running to a central orifice for removal of cooling mud and debris. The tool may be made by casting in a mould with cavities in which cutting elements are inserted; it is cheaper and does not involve skilled manual forming of each individual cutting element cavity, it is also easier to allow flow passages between cutting elements, which may project further from bed than the diamonds normally used.
FR7124155A 1971-07-01 1971-07-01 Bore-hole drill - with cutting element faces disposed at pre determined optimum angles to drilling axis Granted FR2147791A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7124155A FR2147791A1 (en) 1971-07-01 1971-07-01 Bore-hole drill - with cutting element faces disposed at pre determined optimum angles to drilling axis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7124155A FR2147791A1 (en) 1971-07-01 1971-07-01 Bore-hole drill - with cutting element faces disposed at pre determined optimum angles to drilling axis

Publications (2)

Publication Number Publication Date
FR2147791A1 true FR2147791A1 (en) 1973-03-11
FR2147791B1 FR2147791B1 (en) 1974-05-31

Family

ID=9079694

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7124155A Granted FR2147791A1 (en) 1971-07-01 1971-07-01 Bore-hole drill - with cutting element faces disposed at pre determined optimum angles to drilling axis

Country Status (1)

Country Link
FR (1) FR2147791A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2384574A1 (en) * 1977-03-25 1978-10-20 Skf Ind Trading & Dev PROCESS FOR THE MANUFACTURING OF A DRILLING HEAD PROVIDED WITH HARD ELEMENTS AND RESISTANT TO WEAR, AND DRILLING HEAD OBTAINED BY THIS PROCESS
WO1992013169A1 (en) * 1991-01-19 1992-08-06 Thomas Wolf Drilling bit for a rock drill with axial pressure and axial percussion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2384574A1 (en) * 1977-03-25 1978-10-20 Skf Ind Trading & Dev PROCESS FOR THE MANUFACTURING OF A DRILLING HEAD PROVIDED WITH HARD ELEMENTS AND RESISTANT TO WEAR, AND DRILLING HEAD OBTAINED BY THIS PROCESS
WO1992013169A1 (en) * 1991-01-19 1992-08-06 Thomas Wolf Drilling bit for a rock drill with axial pressure and axial percussion

Also Published As

Publication number Publication date
FR2147791B1 (en) 1974-05-31

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Legal Events

Date Code Title Description
ST Notification of lapse