FR2081802B1 - - Google Patents
Info
- Publication number
- FR2081802B1 FR2081802B1 FR7108087A FR7108087A FR2081802B1 FR 2081802 B1 FR2081802 B1 FR 2081802B1 FR 7108087 A FR7108087 A FR 7108087A FR 7108087 A FR7108087 A FR 7108087A FR 2081802 B1 FR2081802 B1 FR 2081802B1
- Authority
- FR
- France
- 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
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/28—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with non-expansible roller cutters
-
- 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
- E21B10/10—Roller bits with roller axle supported at both ends
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1766370A | 1970-03-09 | 1970-03-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2081802A1 FR2081802A1 (fr) | 1971-12-10 |
FR2081802B1 true FR2081802B1 (fr) | 1975-02-21 |
Family
ID=21783864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7108087A Expired FR2081802B1 (fr) | 1970-03-09 | 1971-03-09 |
Country Status (7)
Country | Link |
---|---|
US (1) | US3633691A (fr) |
JP (1) | JPS526921B1 (fr) |
CA (1) | CA931137A (fr) |
DE (1) | DE2112420B2 (fr) |
FR (1) | FR2081802B1 (fr) |
GB (1) | GB1348670A (fr) |
ZA (1) | ZA71818B (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3750767A (en) * | 1971-05-24 | 1973-08-07 | Hughes Tool Co | Rolling cutter mounting in big hole reaming bit |
ZA714204B (en) * | 1971-06-28 | 1972-03-29 | Mcdonnell P Ltd | Improvements in or relating to rotary cutters |
JPS5527657U (fr) * | 1978-08-11 | 1980-02-22 | ||
US4258805A (en) * | 1979-08-27 | 1981-03-31 | Dresser Industries, Inc. | Low cutter load raise head |
NO176528C (no) * | 1992-02-17 | 1995-04-19 | Kverneland Klepp As | Anordning ved borekroner |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1322696A (en) * | 1918-10-29 | 1919-11-25 | Howard R Hughes | Rotary boring-drill. |
US1826059A (en) * | 1927-09-07 | 1931-10-06 | Dunn William Tracy | Drilling head |
US2064273A (en) * | 1935-04-22 | 1936-12-15 | Hughes Tool Co | Roller boring drill |
US2122808A (en) * | 1935-12-24 | 1938-07-05 | Globe Oil Tools Co | Rock bit |
US2208530A (en) * | 1938-02-03 | 1940-07-16 | Thompson Tool Company Inc | Rotary well drill |
US2703698A (en) * | 1951-09-17 | 1955-03-08 | William J B Westerman | Counterboring rotary drill |
US3285355A (en) * | 1964-02-17 | 1966-11-15 | Smith Ind International Inc | Large diameter well-drilling bit |
US3437380A (en) * | 1967-11-06 | 1969-04-08 | Alkirk Inc | Steering method and apparatus |
-
1970
- 1970-03-09 US US17663A patent/US3633691A/en not_active Expired - Lifetime
-
1971
- 1971-02-04 CA CA104475A patent/CA931137A/en not_active Expired
- 1971-02-09 ZA ZA710818A patent/ZA71818B/xx unknown
- 1971-03-09 JP JP46012746A patent/JPS526921B1/ja active Pending
- 1971-03-09 FR FR7108087A patent/FR2081802B1/fr not_active Expired
- 1971-03-09 DE DE2112420A patent/DE2112420B2/de not_active Ceased
- 1971-04-19 GB GB2254871A patent/GB1348670A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CA931137A (en) | 1973-07-31 |
FR2081802A1 (fr) | 1971-12-10 |
US3633691A (en) | 1972-01-11 |
JPS526921B1 (fr) | 1977-02-25 |
DE2112420B2 (de) | 1978-11-02 |
GB1348670A (en) | 1974-03-20 |
DE2112420A1 (de) | 1971-09-30 |
ZA71818B (en) | 1971-10-27 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |