BE477454A - - Google Patents
Info
- Publication number
- BE477454A BE477454A BE477454DA BE477454A BE 477454 A BE477454 A BE 477454A BE 477454D A BE477454D A BE 477454DA BE 477454 A BE477454 A BE 477454A
- Authority
- BE
- Belgium
- Prior art keywords
- crown
- bit
- crowns
- cutting
- desc
- Prior art date
Links
- 239000011435 rock Substances 0.000 description 7
- 238000005553 drilling Methods 0.000 description 6
- 241000425571 Trepanes Species 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000009527 percussion Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 101100511466 Caenorhabditis elegans lon-1 gene Proteins 0.000 description 1
- 241000237858 Gastropoda Species 0.000 description 1
- 241000731961 Juncaceae Species 0.000 description 1
- 241000735470 Juncus Species 0.000 description 1
- 241000238634 Libellulidae Species 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- 210000004417 patella Anatomy 0.000 description 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
- E21B10/36—Percussion drill bits
- E21B10/40—Percussion drill bits with leading portion
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)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE477454A true BE477454A (enExample) |
Family
ID=125519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE477454D BE477454A (enExample) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE477454A (enExample) |
-
0
- BE BE477454D patent/BE477454A/fr unknown
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