GB1269579A - Rotary drill bits - Google Patents
Rotary drill bitsInfo
- Publication number
- GB1269579A GB1269579A GB208670A GB208670A GB1269579A GB 1269579 A GB1269579 A GB 1269579A GB 208670 A GB208670 A GB 208670A GB 208670 A GB208670 A GB 208670A GB 1269579 A GB1269579 A GB 1269579A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drill bits
- rotary drill
- jan
- inch
- rollers
- 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
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
- E21B10/16—Roller bits characterised by tooth form or arrangement
-
- 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
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
1,269,579. Boring earth &c. DRESSER INDUSTRIES Inc. 15 Jan., 1970 [28 Jan., 1969], No. 2086/70. Heading E1F. In a roller bit, the axes of the rollers 26, 28, 30 do not intersect each other, and the inserts 46, 52, 56, 58 project from the surfaces of their rollers for a distance of at least “ of an inch and preferably not more than 9/16 of an inch.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US79451569A | 1969-01-28 | 1969-01-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1269579A true GB1269579A (en) | 1972-04-06 |
Family
ID=25162862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB208670A Expired GB1269579A (en) | 1969-01-28 | 1970-01-15 | Rotary drill bits |
Country Status (3)
Country | Link |
---|---|
CA (1) | CA938605A (en) |
FR (1) | FR2029550B1 (en) |
GB (1) | GB1269579A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2327443A (en) * | 1997-06-30 | 1999-01-27 | Smith International | Drill bit with canted gage insert |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4187922A (en) * | 1978-05-12 | 1980-02-12 | Dresser Industries, Inc. | Varied pitch rotary rock bit |
EP0511547B1 (en) * | 1991-05-01 | 1996-12-11 | Smith International, Inc. | Rock bit |
FR2677699B1 (en) * | 1991-06-11 | 1997-03-14 | Total Petroles | DRILLING TOOL WITH ROTARY TAPERED ROLLERS. |
US6241035B1 (en) | 1998-12-07 | 2001-06-05 | Smith International, Inc. | Superhard material enhanced inserts for earth-boring bits |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2038386A (en) * | 1935-03-09 | 1936-04-21 | Hughes Tool Co | Cutter for well drills |
US2148372A (en) * | 1936-03-21 | 1939-02-21 | Hughes Tool Co | Offset tricone bit |
US2774571A (en) * | 1954-07-06 | 1956-12-18 | Hughes Tool Co | Cone type well drill |
US3134447A (en) * | 1962-01-31 | 1964-05-26 | Hughes Tool Co | Rolling cone rock bit with wraparound spearpoints |
US3388757A (en) * | 1967-03-23 | 1968-06-18 | Smith Ind International Inc | Hardened inserts for drill bits |
-
1970
- 1970-01-09 CA CA071790A patent/CA938605A/en not_active Expired
- 1970-01-15 GB GB208670A patent/GB1269579A/en not_active Expired
- 1970-01-27 FR FR7002760A patent/FR2029550B1/fr not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2327443A (en) * | 1997-06-30 | 1999-01-27 | Smith International | Drill bit with canted gage insert |
GB2327443B (en) * | 1997-06-30 | 2001-12-19 | Smith International | Drill bit, cutting insert and method of manufacture |
Also Published As
Publication number | Publication date |
---|---|
CA938605A (en) | 1973-12-18 |
FR2029550A1 (en) | 1970-10-23 |
FR2029550B1 (en) | 1973-12-21 |
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