CA991298A - Borehole drilling devices - Google Patents
Borehole drilling devicesInfo
- Publication number
- CA991298A CA991298A CA135,885A CA135885A CA991298A CA 991298 A CA991298 A CA 991298A CA 135885 A CA135885 A CA 135885A CA 991298 A CA991298 A CA 991298A
- Authority
- CA
- Canada
- Prior art keywords
- drilling devices
- borehole drilling
- borehole
- devices
- drilling
- 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
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA135,885A CA991298A (en) | 1972-02-29 | 1972-02-29 | Borehole drilling devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA135,885A CA991298A (en) | 1972-02-29 | 1972-02-29 | Borehole drilling devices |
Publications (1)
Publication Number | Publication Date |
---|---|
CA991298A true CA991298A (en) | 1976-06-15 |
Family
ID=4092483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA135,885A Expired CA991298A (en) | 1972-02-29 | 1972-02-29 | Borehole drilling devices |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA991298A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4592432A (en) * | 1985-06-03 | 1986-06-03 | Williams Russell R | Automatically operated boring head |
US4905774A (en) * | 1986-05-27 | 1990-03-06 | Institut Francais Du Petrole | Process and device for guiding a drilling tool through geological formations |
-
1972
- 1972-02-29 CA CA135,885A patent/CA991298A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4592432A (en) * | 1985-06-03 | 1986-06-03 | Williams Russell R | Automatically operated boring head |
US4905774A (en) * | 1986-05-27 | 1990-03-06 | Institut Francais Du Petrole | Process and device for guiding a drilling tool through geological formations |
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