CA991298A - Borehole drilling devices - Google Patents

Borehole drilling devices

Info

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
Application number
CA135,885A
Other versions
CA135885S (en
Inventor
Michael K. Russell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CA135,885A priority Critical patent/CA991298A/en
Application granted granted Critical
Publication of CA991298A publication Critical patent/CA991298A/en
Expired legal-status Critical Current

Links

CA135,885A 1972-02-29 1972-02-29 Borehole drilling devices Expired CA991298A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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