FR2047983A1 - - Google Patents

Info

Publication number
FR2047983A1
FR2047983A1 FR7023407A FR7023407A FR2047983A1 FR 2047983 A1 FR2047983 A1 FR 2047983A1 FR 7023407 A FR7023407 A FR 7023407A FR 7023407 A FR7023407 A FR 7023407A FR 2047983 A1 FR2047983 A1 FR 2047983A1
Authority
FR
France
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.)
Granted
Application number
FR7023407A
Other languages
French (fr)
Other versions
FR2047983B1 (sv
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.)
Sumitomo Metal Mining Co Ltd
Original Assignee
Sumitomo Metal Mining Co Ltd
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 Sumitomo Metal Mining Co Ltd filed Critical Sumitomo Metal Mining Co Ltd
Publication of FR2047983A1 publication Critical patent/FR2047983A1/fr
Application granted granted Critical
Publication of FR2047983B1 publication Critical patent/FR2047983B1/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/64—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
    • E21B10/66—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe the cutting element movable through the drilling pipe and laterally shiftable
FR707023407A 1969-06-27 1970-06-24 Expired FR2047983B1 (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44050423A JPS5020522B1 (sv) 1969-06-27 1969-06-27

Publications (2)

Publication Number Publication Date
FR2047983A1 true FR2047983A1 (sv) 1971-03-19
FR2047983B1 FR2047983B1 (sv) 1973-05-25

Family

ID=12858440

Family Applications (1)

Application Number Title Priority Date Filing Date
FR707023407A Expired FR2047983B1 (sv) 1969-06-27 1970-06-24

Country Status (4)

Country Link
US (1) US3661219A (sv)
JP (1) JPS5020522B1 (sv)
FR (1) FR2047983B1 (sv)
SE (1) SE393155B (sv)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2575785A1 (fr) * 1985-01-04 1986-07-11 Rech Geolog Miniere Appareil de forage equipe d'un dispositif permettant le changement de l'outil de forage sans avoir a remonter le train de tiges et comportant un dispositif d'alesage expansible

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5367438U (sv) * 1976-11-09 1978-06-06
JPS57179946U (sv) * 1981-05-09 1982-11-15
JPS57199451U (sv) * 1981-05-09 1982-12-18
US4497382A (en) * 1983-03-24 1985-02-05 Komitet Po Goelogica Retractable core drill bit
US5460231A (en) * 1994-08-19 1995-10-24 Collins; James S. Device and method for augering a conical hole in solid media

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2771275A (en) * 1952-01-29 1956-11-20 Exxon Research Engineering Co Hard formation retractable drill bit
US3050142A (en) * 1959-07-06 1962-08-21 Kammerer Retrievable drilling apparatus for well bores

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US473907A (en) * 1892-05-03 Milan c
US1766253A (en) * 1922-09-08 1930-06-24 Kennedye Corp Drilling tool
US2239996A (en) * 1936-05-25 1941-04-29 Chappell Drilling Equipment Co Drilling apparatus
US3050143A (en) * 1959-07-06 1962-08-21 Jr Archer W Kammerer Retrievable well bore drilling apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2771275A (en) * 1952-01-29 1956-11-20 Exxon Research Engineering Co Hard formation retractable drill bit
US3050142A (en) * 1959-07-06 1962-08-21 Kammerer Retrievable drilling apparatus for well bores

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2575785A1 (fr) * 1985-01-04 1986-07-11 Rech Geolog Miniere Appareil de forage equipe d'un dispositif permettant le changement de l'outil de forage sans avoir a remonter le train de tiges et comportant un dispositif d'alesage expansible

Also Published As

Publication number Publication date
JPS5020522B1 (sv) 1975-07-16
SE393155B (sv) 1977-05-02
US3661219A (en) 1972-05-09
FR2047983B1 (sv) 1973-05-25

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Legal Events

Date Code Title Description
ST Notification of lapse