JPS4839681B1 - - Google Patents

Info

Publication number
JPS4839681B1
JPS4839681B1 JP44070616A JP7061669A JPS4839681B1 JP S4839681 B1 JPS4839681 B1 JP S4839681B1 JP 44070616 A JP44070616 A JP 44070616A JP 7061669 A JP7061669 A JP 7061669A JP S4839681 B1 JPS4839681 B1 JP S4839681B1
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
JP44070616A
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 JPS4839681B1 publication Critical patent/JPS4839681B1/ja
Pending 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
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
    • E21B10/34—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools of roller-cutter type
    • E21B10/345—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools of roller-cutter type cutter shifted by fluid pressure
JP44070616A 1968-09-24 1969-09-08 Pending JPS4839681B1 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76194768A 1968-09-24 1968-09-24

Publications (1)

Publication Number Publication Date
JPS4839681B1 true JPS4839681B1 (ja) 1973-11-26

Family

ID=25063692

Family Applications (1)

Application Number Title Priority Date Filing Date
JP44070616A Pending JPS4839681B1 (ja) 1968-09-24 1969-09-08

Country Status (5)

Country Link
US (1) US3554305A (ja)
JP (1) JPS4839681B1 (ja)
DE (1) DE1941988A1 (ja)
FR (1) FR2018705A1 (ja)
GB (1) GB1218915A (ja)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4565252A (en) * 1984-03-08 1986-01-21 Lor, Inc. Borehole operating tool with fluid circulation through arms
US4603749A (en) * 1984-08-27 1986-08-05 Norton Christensen, Inc. Apparatus for downward displacement of an inner tube within a coring barrel
GB2194571B (en) * 1986-08-13 1990-05-16 A Z Int Tool Co Drilling apparatus and cutter
US4809793A (en) * 1987-10-19 1989-03-07 Hailey Charles D Enhanced diameter clean-out tool and method
GB2245626B (en) * 1987-10-19 1992-03-25 Hailey Charles D Enhanced diameter clean-out tool and method
US5086852A (en) * 1990-08-27 1992-02-11 Wada Ventures Fluid flow control system for operating a down-hole tool
GB2313860B (en) * 1996-06-06 2000-11-01 Paul Bernard Lee Adjustable roller reamer
US6148919A (en) * 1998-04-24 2000-11-21 Halliburton Energy Services, Inc. Apparatus having a releasable lock
US6131675A (en) * 1998-09-08 2000-10-17 Baker Hughes Incorporated Combination mill and drill bit
GB2364079B (en) * 2000-06-28 2004-11-17 Renovus Ltd Drill bits
US7036611B2 (en) * 2002-07-30 2006-05-02 Baker Hughes Incorporated Expandable reamer apparatus for enlarging boreholes while drilling and methods of use
US20040195006A1 (en) * 2003-04-04 2004-10-07 Groves William G. Under-reamer tool
US7717652B2 (en) * 2005-01-18 2010-05-18 Makino, Inc. Tool with selectively-biased member having an adjustment feature
US9404331B2 (en) * 2012-07-31 2016-08-02 Smith International, Inc. Extended duration section mill and methods of use
GB2564685B (en) * 2017-07-19 2022-01-19 Mcgarian Bruce A tool and method for cutting the casing of a bore hole
GB2565103B (en) 2017-08-01 2021-02-17 Mcgarian Bruce An apparatus and method for milling a window in a borehole
GB2584841A (en) * 2019-06-14 2020-12-23 Nov Downhole Eurasia Ltd Downhole tools and associated methods

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2049450A (en) * 1933-08-23 1936-08-04 Macclatchie Mfg Company Expansible cutter tool
US2699921A (en) * 1950-11-18 1955-01-18 Regan Forge & Eng Co Expanding hole enlarger or underreamer for deep wells
US2755070A (en) * 1954-08-25 1956-07-17 Rotary Oil Tool Company Hydraulically expansible rotary drill bits
US3137349A (en) * 1960-04-11 1964-06-16 Udell Inc Systems of expansible well tools
US3196960A (en) * 1963-03-19 1965-07-27 Lamphere Jean K Fluid pressure expansible drill bits
US3339647A (en) * 1965-08-20 1967-09-05 Lamphere Jean K Hydraulically expansible drill bits
US3406769A (en) * 1966-10-24 1968-10-22 Lamphere Jean K Reverse circulation rotary expansible drill bits

Also Published As

Publication number Publication date
FR2018705A1 (ja) 1970-06-26
GB1218915A (en) 1971-01-13
US3554305A (en) 1971-01-12
DE1941988A1 (de) 1970-04-02

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