CA1126254A - Trepan de forage a assise paliere et joints d'etancheite ameliores, et porte-mises connexe - Google Patents

Trepan de forage a assise paliere et joints d'etancheite ameliores, et porte-mises connexe

Info

Publication number
CA1126254A
CA1126254A CA375,494A CA375494A CA1126254A CA 1126254 A CA1126254 A CA 1126254A CA 375494 A CA375494 A CA 375494A CA 1126254 A CA1126254 A CA 1126254A
Authority
CA
Canada
Prior art keywords
groups
cutter
inserts
pitch
decreasing
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
CA375,494A
Other languages
English (en)
Inventor
Rudolf C. O. Pessier
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.)
Hughes Tool Co
Original Assignee
Hughes Tool 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
Priority claimed from US06/043,533 external-priority patent/US4316515A/en
Application filed by Hughes Tool Co filed Critical Hughes Tool Co
Priority to CA375,494A priority Critical patent/CA1126254A/fr
Application granted granted Critical
Publication of CA1126254A publication Critical patent/CA1126254A/fr
Expired legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
CA375,494A 1979-05-29 1981-04-14 Trepan de forage a assise paliere et joints d'etancheite ameliores, et porte-mises connexe Expired CA1126254A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA375,494A CA1126254A (fr) 1979-05-29 1981-04-14 Trepan de forage a assise paliere et joints d'etancheite ameliores, et porte-mises connexe

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US06/043,533 US4316515A (en) 1979-05-29 1979-05-29 Shaft drill bit with improved cutter bearing and seal arrangement and cutter insert arrangement
US043,533 1979-05-29
CA000342067A CA1118756A (fr) 1979-05-29 1979-12-17 Trepan de forage a antifriction et scellement ameliores sur organe de coupe, et mise de coupe connexe
CA375,494A CA1126254A (fr) 1979-05-29 1981-04-14 Trepan de forage a assise paliere et joints d'etancheite ameliores, et porte-mises connexe

Publications (1)

Publication Number Publication Date
CA1126254A true CA1126254A (fr) 1982-06-22

Family

ID=27166518

Family Applications (1)

Application Number Title Priority Date Filing Date
CA375,494A Expired CA1126254A (fr) 1979-05-29 1981-04-14 Trepan de forage a assise paliere et joints d'etancheite ameliores, et porte-mises connexe

Country Status (1)

Country Link
CA (1) CA1126254A (fr)

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Legal Events

Date Code Title Description
MKEX Expiry