CA1077018A - Trepeau rotatif - Google Patents

Trepeau rotatif

Info

Publication number
CA1077018A
CA1077018A CA284,200A CA284200A CA1077018A CA 1077018 A CA1077018 A CA 1077018A CA 284200 A CA284200 A CA 284200A CA 1077018 A CA1077018 A CA 1077018A
Authority
CA
Canada
Prior art keywords
pin
bit
layer
crystals
abrasive
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
CA284,200A
Other languages
English (en)
Inventor
Harold P. Bovenkerk
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Priority to CA284,200A priority Critical patent/CA1077018A/fr
Application granted granted Critical
Publication of CA1077018A publication Critical patent/CA1077018A/fr
Expired legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
CA284,200A 1977-08-05 1977-08-05 Trepeau rotatif Expired CA1077018A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA284,200A CA1077018A (fr) 1977-08-05 1977-08-05 Trepeau rotatif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA284,200A CA1077018A (fr) 1977-08-05 1977-08-05 Trepeau rotatif

Publications (1)

Publication Number Publication Date
CA1077018A true CA1077018A (fr) 1980-05-06

Family

ID=4109285

Family Applications (1)

Application Number Title Priority Date Filing Date
CA284,200A Expired CA1077018A (fr) 1977-08-05 1977-08-05 Trepeau rotatif

Country Status (1)

Country Link
CA (1) CA1077018A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4552231A (en) * 1983-09-06 1985-11-12 Norton Christensen, Inc. Rotating pilot core bit for use in highly fractured formations

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4552231A (en) * 1983-09-06 1985-11-12 Norton Christensen, Inc. Rotating pilot core bit for use in highly fractured formations

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Legal Events

Date Code Title Description
MKEX Expiry