SE8102397L - DRILL CHRONICLE WITH SPREADED CUTTING ELEMENTS - Google Patents
DRILL CHRONICLE WITH SPREADED CUTTING ELEMENTSInfo
- Publication number
- SE8102397L SE8102397L SE8102397A SE8102397A SE8102397L SE 8102397 L SE8102397 L SE 8102397L SE 8102397 A SE8102397 A SE 8102397A SE 8102397 A SE8102397 A SE 8102397A SE 8102397 L SE8102397 L SE 8102397L
- Authority
- SE
- Sweden
- Prior art keywords
- insert
- boundary zone
- inserts
- randomly
- chronicle
- Prior art date
Links
- 239000002184 metal Substances 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
- 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
-
- 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
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)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
A roller cutter earth boring drill bit has hard metal inserts 47 in its cutter shells that are spaced to eliminate rows. Each insert 47' has a surrounding boundary zone with inner 53 and outer 55 loops corresponding to the minimum and maximum desired distances between centerlines of inserts, respectively. Each insert 47' has at least one insert 47'' located randomly in its boundary zone. In selecting the locations, a first insert 47' is arbitrarily located. The location of a second insert 47'' is randomly selected within the boundary zone of the first insert 47'. The location of a third insert 47''' is randomly located within the boundary zone of the second insert 47'', so long as it does not come any closer to the first insert 47' than the minimum desired distance between inserts. Each succeeding insert is chosen in this manner. <IMAGE>
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16197780A | 1980-06-23 | 1980-06-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE8102397L true SE8102397L (en) | 1981-12-24 |
| SE448015B SE448015B (en) | 1987-01-12 |
Family
ID=22583644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8102397A SE448015B (en) | 1980-06-23 | 1981-04-14 | DRILL CHRONICLE WITH SPREADED CUTTING ELEMENTS AND METHOD FOR LOCATING THE CUTTING ELEMENTS |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5715796A (en) |
| AU (1) | AU543784B2 (en) |
| CA (1) | CA1154752A (en) |
| DE (1) | DE3117268A1 (en) |
| GB (1) | GB2078826B (en) |
| NO (1) | NO156952C (en) |
| SE (1) | SE448015B (en) |
| ZA (1) | ZA812521B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29907492U1 (en) * | 1999-04-29 | 2000-09-28 | Wirth Maschinen- und Bohrgeräte-Fabrik GmbH, 41812 Erkelenz | Soil loosening tool |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2230569A (en) * | 1939-12-20 | 1941-02-04 | Globe Oil Tools Co | Roller cutter |
| US2774571A (en) * | 1954-07-06 | 1956-12-18 | Hughes Tool Co | Cone type well drill |
| US3726350A (en) * | 1971-05-24 | 1973-04-10 | Hughes Tool Co | Anti-tracking earth boring drill |
| US3871488A (en) * | 1974-02-13 | 1975-03-18 | Daniel R Sabre | Rock drilling |
| US4187922A (en) * | 1978-05-12 | 1980-02-12 | Dresser Industries, Inc. | Varied pitch rotary rock bit |
-
1981
- 1981-02-27 CA CA000371949A patent/CA1154752A/en not_active Expired
- 1981-04-14 SE SE8102397A patent/SE448015B/en not_active IP Right Cessation
- 1981-04-15 ZA ZA00812521A patent/ZA812521B/en unknown
- 1981-04-16 AU AU69615/81A patent/AU543784B2/en not_active Expired
- 1981-04-21 GB GB8112352A patent/GB2078826B/en not_active Expired
- 1981-04-22 NO NO811356A patent/NO156952C/en unknown
- 1981-04-30 JP JP6614481A patent/JPS5715796A/en active Granted
- 1981-04-30 DE DE19813117268 patent/DE3117268A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| GB2078826A (en) | 1982-01-13 |
| DE3117268A1 (en) | 1982-04-15 |
| JPH0258433B2 (en) | 1990-12-07 |
| GB2078826B (en) | 1983-12-07 |
| SE448015B (en) | 1987-01-12 |
| NO811356L (en) | 1981-12-28 |
| ZA812521B (en) | 1982-04-28 |
| NO156952B (en) | 1987-09-14 |
| AU543784B2 (en) | 1985-05-02 |
| DE3117268C2 (en) | 1991-06-06 |
| AU6961581A (en) | 1982-01-07 |
| JPS5715796A (en) | 1982-01-27 |
| NO156952C (en) | 1987-12-23 |
| CA1154752A (en) | 1983-10-04 |
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Legal Events
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|---|---|---|---|
| NAL | Patent in force |
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| NUG | Patent has lapsed |
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