CA1125272A - Trepan expansible pour elargir les forages - Google Patents

Trepan expansible pour elargir les forages

Info

Publication number
CA1125272A
CA1125272A CA380,474A CA380474A CA1125272A CA 1125272 A CA1125272 A CA 1125272A CA 380474 A CA380474 A CA 380474A CA 1125272 A CA1125272 A CA 1125272A
Authority
CA
Canada
Prior art keywords
air
drilling fluid
bit
cutters
body member
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
CA380,474A
Other languages
English (en)
Inventor
Gary R. Johnson
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.)
Tri State Oil Tools Inc
Original Assignee
Tri State Oil Tools Inc
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 CA341,673A external-priority patent/CA1111833A/fr
Application filed by Tri State Oil Tools Inc filed Critical Tri State Oil Tools Inc
Priority to CA380,474A priority Critical patent/CA1125272A/fr
Application granted granted Critical
Publication of CA1125272A publication Critical patent/CA1125272A/fr
Expired legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
CA380,474A 1979-12-11 1981-06-23 Trepan expansible pour elargir les forages Expired CA1125272A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA380,474A CA1125272A (fr) 1979-12-11 1981-06-23 Trepan expansible pour elargir les forages

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA341,673A CA1111833A (fr) 1979-12-11 1979-12-11 Methode et dispositif d'agrandissement du diametre d'un forage
CA380,474A CA1125272A (fr) 1979-12-11 1981-06-23 Trepan expansible pour elargir les forages

Publications (1)

Publication Number Publication Date
CA1125272A true CA1125272A (fr) 1982-06-08

Family

ID=25669014

Family Applications (1)

Application Number Title Priority Date Filing Date
CA380,474A Expired CA1125272A (fr) 1979-12-11 1981-06-23 Trepan expansible pour elargir les forages

Country Status (1)

Country Link
CA (1) CA1125272A (fr)

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Legal Events

Date Code Title Description
MKEX Expiry