JPS5318963B1 - - Google Patents

Info

Publication number
JPS5318963B1
JPS5318963B1 JP4358672A JP4358672A JPS5318963B1 JP S5318963 B1 JPS5318963 B1 JP S5318963B1 JP 4358672 A JP4358672 A JP 4358672A JP 4358672 A JP4358672 A JP 4358672A JP S5318963 B1 JPS5318963 B1 JP S5318963B1
Authority
JP
Japan
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.)
Pending
Application number
JP4358672A
Other languages
Japanese (ja)
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 filed Critical
Publication of JPS5318963B1 publication Critical patent/JPS5318963B1/ja
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/02—Core bits
    • E21B10/04—Core bits with core destroying means
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • E21B10/605—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a core-bit

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
JP4358672A 1971-05-04 1972-05-01 Pending JPS5318963B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7115966A FR2135053B1 (de) 1971-05-04 1971-05-04

Publications (1)

Publication Number Publication Date
JPS5318963B1 true JPS5318963B1 (de) 1978-06-17

Family

ID=9076363

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4358672A Pending JPS5318963B1 (de) 1971-05-04 1972-05-01

Country Status (9)

Country Link
US (1) US3768581A (de)
JP (1) JPS5318963B1 (de)
CA (1) CA967945A (de)
CH (1) CH552126A (de)
DE (1) DE2220455C3 (de)
FR (1) FR2135053B1 (de)
GB (1) GB1394115A (de)
IT (1) IT954958B (de)
RO (1) RO64710A (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871488A (en) * 1974-02-13 1975-03-18 Daniel R Sabre Rock drilling
US4073354A (en) * 1976-11-26 1978-02-14 Christensen, Inc. Earth-boring drill bits
FR2385883A1 (fr) * 1977-03-31 1978-10-27 Petroles Cie Francaise Outil de forage a haut rendement a attaque rapide de la carotte
US4098363A (en) * 1977-04-25 1978-07-04 Christensen, Inc. Diamond drilling bit for soft and medium hard formations
GB2123881B (en) * 1982-07-20 1985-11-13 Sumitomo Metal Mining Co Well drilling bit
FR2538442B1 (fr) * 1982-12-23 1986-02-28 Charbonnages De France Taillant pour foration rotative assistee par jet
US5373900A (en) 1988-04-15 1994-12-20 Baker Hughes Incorporated Downhole milling tool
US4719979A (en) * 1986-03-24 1988-01-19 Smith International, Inc. Expendable diamond drag bit
US4813500A (en) * 1987-10-19 1989-03-21 Smith International, Inc. Expendable diamond drag bit
US5025873A (en) * 1989-09-29 1991-06-25 Baker Hughes Incorporated Self-renewing multi-element cutting structure for rotary drag bit
FI103430B1 (fi) * 1994-10-05 1999-06-30 Valto Ilomaeki Poralaite ja menetelmä reiän poraamiseksi useaan erilaatuiseen maaperään
US8327956B2 (en) * 2008-12-19 2012-12-11 Varel International, Ind., L.P. Multi-set PDC drill bit and method
CN102704853B (zh) * 2012-06-21 2015-07-15 四川深远石油钻井工具股份有限公司 钻进比压可控的模块切削齿
AU2014274759B2 (en) 2013-06-06 2016-09-29 Milwaukee Electric Tool Corporation Step drill bit
CN110678622B (zh) * 2017-05-05 2021-12-21 史密斯国际有限公司 阶梯式井下工具和使用方法
US11273501B2 (en) 2018-04-26 2022-03-15 Milwaukee Electric Tool Corporation Step drill bit
US20210363831A1 (en) * 2020-05-07 2021-11-25 Kenneth Layton STARR System and Method for A Drill Bit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2029963A5 (de) * 1969-03-19 1970-10-23 Petroles Cie Francaise

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE914723C (de) * 1949-02-03 1954-07-08 Wallram Hartmetall Bohrer fuer Gesteinsdrehbohrmaschinen
US2607562A (en) * 1951-03-19 1952-08-19 Phipps Orville Self-piloted rotary drill bit
US2894726A (en) * 1956-04-10 1959-07-14 Earl M Weaver Drilling bit
US3127945A (en) * 1960-03-02 1964-04-07 Jersey Prod Res Co Drag bit
US3135341A (en) * 1960-10-04 1964-06-02 Christensen Diamond Prod Co Diamond drill bits
FR1282700A (fr) * 1960-12-16 1962-01-27 Aquitaine Petrole Perfectionnements aux outils de forage à diamants
US3599736A (en) * 1970-05-18 1971-08-17 American Coldset Corp Rotary drill bit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2029963A5 (de) * 1969-03-19 1970-10-23 Petroles Cie Francaise

Also Published As

Publication number Publication date
US3768581A (en) 1973-10-30
DE2220455B2 (de) 1973-09-13
DE2220455C3 (de) 1974-04-11
CH552126A (fr) 1974-07-31
IT954958B (it) 1973-09-15
FR2135053A1 (de) 1972-12-15
CA967945A (en) 1975-05-20
FR2135053B1 (de) 1974-08-19
DE2220455A1 (de) 1972-11-16
RO64710A (fr) 1979-06-15
GB1394115A (en) 1975-05-14

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