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 axisInfo
- 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
Links
- 238000005553 drilling Methods 0.000 title abstract 3
- 239000010432 diamond Substances 0.000 abstract 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000005266 casting Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 229910003460 diamond Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 230000035515 penetration Effects 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000011435 rock Substances 0.000 abstract 1
- 238000007790 scraping Methods 0.000 abstract 1
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.
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)
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 |
-
1971
- 1971-07-01 FR FR7124155A patent/FR2147791A1/en active Granted
Cited By (2)
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 |