NL7206595A - - Google Patents

Info

Publication number
NL7206595A
NL7206595A NL7206595A NL7206595A NL7206595A NL 7206595 A NL7206595 A NL 7206595A NL 7206595 A NL7206595 A NL 7206595A NL 7206595 A NL7206595 A NL 7206595A NL 7206595 A NL7206595 A NL 7206595A
Authority
NL
Netherlands
Application number
NL7206595A
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 to BE795272D priority Critical patent/BE795272A/xx
Application filed filed Critical
Priority to NL7206595A priority patent/NL7206595A/xx
Priority to DE2306462A priority patent/DE2306462B2/de
Priority to DE19732365455 priority patent/DE2365455C3/de
Priority to US00335105A priority patent/US3830319A/en
Publication of NL7206595A publication Critical patent/NL7206595A/xx

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
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/18—Pipes provided with plural fluid passages
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/12—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using drilling pipes with plural fluid passages, e.g. closed circulation systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Joints Allowing Movement (AREA)
NL7206595A 1972-05-16 1972-05-16 NL7206595A (pl)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE795272D BE795272A (fr) 1972-05-16 Boorinrichting
NL7206595A NL7206595A (pl) 1972-05-16 1972-05-16
DE2306462A DE2306462B2 (de) 1972-05-16 1973-02-09 Rohrverbindung für Doppelrohrstränge
DE19732365455 DE2365455C3 (de) 1972-05-16 1973-02-09 Rohrverbindung für Doppelrohrstränge
US00335105A US3830319A (en) 1972-05-16 1973-02-23 Drilling apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7206595A NL7206595A (pl) 1972-05-16 1972-05-16

Publications (1)

Publication Number Publication Date
NL7206595A true NL7206595A (pl) 1973-11-20

Family

ID=19816050

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7206595A NL7206595A (pl) 1972-05-16 1972-05-16

Country Status (4)

Country Link
US (1) US3830319A (pl)
BE (1) BE795272A (pl)
DE (1) DE2306462B2 (pl)
NL (1) NL7206595A (pl)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871486A (en) * 1973-08-29 1975-03-18 Bakerdrill Inc Continuous coring system and apparatus
US5713423A (en) * 1992-07-24 1998-02-03 The Charles Machine Works, Inc. Drill pipe
AT410356B (de) * 2000-05-17 2003-04-25 Voest Alpine Bergtechnik Einrichtung zum abdichten eines bohrloches und zum ausbringen von bohrklein bzw. gelöstem abbaumaterial
ATE377459T1 (de) * 2001-07-23 2007-11-15 Ruhrpumpen Gmbh Antriebsvorrichtung für eine bohrstange
US7134514B2 (en) * 2003-11-13 2006-11-14 American Augers, Inc. Dual wall drill string assembly
NL1035635C2 (nl) * 2008-06-26 2009-12-29 Conrad Trading B V Inrichting voor het roterend boren van een buis in een onder water gelegen bodem.
CN103382817B (zh) * 2013-07-26 2016-01-20 中国矿业大学 一种煤矿底板锚固防堵钻杆
CN103410450A (zh) * 2013-08-13 2013-11-27 镇江安达煤矿专用设备有限公司 双管式钻杆
RU2544688C2 (ru) * 2014-03-28 2015-03-20 Олег Сергеевич Николаев Стыковочный узел многоканальных трубопроводов
ES2959488T3 (es) 2014-07-18 2024-02-26 Longyear Tm Inc Varilla de perforación que tiene partes que sobresalen internamente

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2657016A (en) * 1950-01-20 1953-10-27 Donovan B Grable Fluid circulation head for drill strings
US3208539A (en) * 1958-09-17 1965-09-28 Walker Neer Mfg Co Apparatus for drilling wells
US3077358A (en) * 1958-09-18 1963-02-12 Modiano Dr Ing Well-drilling pipe
US3096103A (en) * 1959-10-13 1963-07-02 Armco Steel Corp Dual passage rotary swivel
US3078931A (en) * 1960-12-08 1963-02-26 David G Moore Free corer
US3155179A (en) * 1961-08-04 1964-11-03 Kennecott Copper Corp Dual-tube drill string for sample drilling
US3338322A (en) * 1965-02-16 1967-08-29 Homer I Henderson Earth boring drill
US3473617A (en) * 1968-03-20 1969-10-21 Wayland D Elenburg Method and apparatus for drilling and coring
US3664441A (en) * 1970-06-01 1972-05-23 Carey Machine And Supply Co Concentric pipe drill string

Also Published As

Publication number Publication date
US3830319A (en) 1974-08-20
DE2365455A1 (de) 1975-01-30
DE2306462A1 (de) 1974-01-10
DE2365455B2 (de) 1976-01-15
BE795272A (fr) 1973-08-09
DE2306462B2 (de) 1975-03-20

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Legal Events

Date Code Title Description
BX A request for additional search has been filed
BY An additional search report has been drawn up
BC A request for examination has been filed
DNT Communications of changes of names of applicants whose applications have been laid open to public inspection

Free format text: CONRAD STORK BEHEER B.V.

CNR Transfer of rights (patent application after its laying open for public inspection)

Free format text: CONRAD-STORK KRAANBOUW B.V.

BN A decision not to publish the application has become irrevocable