EP0376044A3 - Core-drilling tool - Google Patents

Core-drilling tool Download PDF

Info

Publication number
EP0376044A3
EP0376044A3 EP19890122882 EP89122882A EP0376044A3 EP 0376044 A3 EP0376044 A3 EP 0376044A3 EP 19890122882 EP19890122882 EP 19890122882 EP 89122882 A EP89122882 A EP 89122882A EP 0376044 A3 EP0376044 A3 EP 0376044A3
Authority
EP
European Patent Office
Prior art keywords
outer housing
core
drilling tool
indoor unit
adjusting
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.)
Granted
Application number
EP19890122882
Other languages
German (de)
French (fr)
Other versions
EP0376044A2 (en
EP0376044B1 (en
Inventor
Hans-Ulf Behre
Jakob Laukart
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.)
Baker Hughes Oilfield Operations LLC
Original Assignee
Eastman Christensen Co
Eastman Teleco Co
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 Eastman Christensen Co, Eastman Teleco Co filed Critical Eastman Christensen Co
Publication of EP0376044A2 publication Critical patent/EP0376044A2/en
Publication of EP0376044A3 publication Critical patent/EP0376044A3/en
Application granted granted Critical
Publication of EP0376044B1 publication Critical patent/EP0376044B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors

Landscapes

  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Drilling And Boring (AREA)
  • Drilling Tools (AREA)

Abstract

Das Kernbohrwerkzeug (1) umfaßt ein an seinem oberen Ende mit einem Bohrrohrstrang (4) verbindbares rohrförmiges Außengehäuse (2), das an seinem unteren Ende mit einer Kernbohrkrone (5) verbindbar ist, und ein einen erbohrten Kern aufnehmendes Innenrohr (8), das den unteren Bestandteil einer in ihrem oberen Bereich an einer Anschlußstelle (7) im Außengehäuse (2) abgestüzten Inneneinheit bildet, das mittels einer Lagervorrichtung (9) gegenüber dem oberen Teil der Inneneinheit (6) frei drehbar gelagert ist und das mittels einer Einstellvorrichtung (11) axial relativ zum Außengehäuse (2) einstellbar ist. Die Einstellvorrichtung (11) umfaßt dabei ein Stellgewinde (15, 18) und ein Verriegelungselement (22) mit in Riegelnuten (19, 20) einrückbaren Riegelklauen (23, 24). Die Einstellvorrichtung (11) bildet eine gesonderte Zwischeneinheit, die im Bereich zwischen der Anschlußstelle (7) für die Inneneinheit (6) und der Lagervorrichtung (9) für das Innenrohr (8) in das Kernbohrwerkzeug (1) eingefügt ist und einen in das Außengehäuse (2) eingesetzten Außenteil (12) sowie einen in die Inneneinheit (6) eingefügten Innenteil (13) mit zylindrischem Stellgewinde (15, 18) aufweist. The core drilling tool (1) includes one at its upper end a drill pipe string (4) connectable tubular outer housing (2), the is connectable at its lower end to a core bit (5), and an inner tube (8) receiving a drilled core, which the lower Part of an upper part at a connection point (7) in the outer housing (2) is supported by an internal unit Bearing device (9) opposite the upper part of the indoor unit (6) free is rotatably mounted and by means of an adjusting device (11) is axially adjustable relative to the outer housing (2). The Adjustment device (11) comprises an adjusting thread (15, 18) and a Locking element (22) with engages in locking grooves (19, 20) Bolt claws (23, 24). The adjusting device (11) forms one separate intermediate unit in the area between the junction (7) for the indoor unit (6) and the bearing device (9) for the Inner tube (8) is inserted into the core drilling tool (1) and one into the Outer housing (2) inserted outer part (12) and one in the Indoor unit (6) inserted inner part (13) with a cylindrical Has adjusting thread (15, 18).

EP89122882A 1988-12-24 1989-12-12 Core-drilling tool Expired - Lifetime EP0376044B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3843800 1988-12-24
DE3843800A DE3843800C1 (en) 1988-12-24 1988-12-24

Publications (3)

Publication Number Publication Date
EP0376044A2 EP0376044A2 (en) 1990-07-04
EP0376044A3 true EP0376044A3 (en) 1992-02-26
EP0376044B1 EP0376044B1 (en) 1995-07-19

Family

ID=6370193

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89122882A Expired - Lifetime EP0376044B1 (en) 1988-12-24 1989-12-12 Core-drilling tool

Country Status (5)

Country Link
US (1) US5025872A (en)
EP (1) EP0376044B1 (en)
CA (1) CA2006607C (en)
DE (1) DE3843800C1 (en)
NO (1) NO895214L (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6729416B2 (en) 2001-04-11 2004-05-04 Schlumberger Technology Corporation Method and apparatus for retaining a core sample within a coring tool
US7431107B2 (en) * 2003-01-22 2008-10-07 Schlumberger Technology Corporation Coring bit with uncoupled sleeve
US20050133267A1 (en) * 2003-12-18 2005-06-23 Schlumberger Technology Corporation [coring tool with retention device]
US8613330B2 (en) 2011-07-05 2013-12-24 Schlumberger Technology Corporation Coring tools and related methods
CN102787818B (en) * 2012-08-30 2015-08-19 刘力强 Small motor-driven geological core driller

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1039006B (en) * 1954-11-17 1958-09-18 Helmut Huegel Dr Ing Core catcher for deep drilling tools
DE1185554B (en) * 1963-06-21 1965-01-21 Roland Joseph Du Berger Core tube
EP0134586A1 (en) * 1983-09-09 1985-03-20 Eastman Christensen Company Hydraulic lift inner barrel in a drill string coring tool

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4300643A (en) * 1979-03-22 1981-11-17 Diamant Boart Double core barrel
US4463460A (en) * 1982-08-13 1984-08-07 Indiana Brass, Inc. Roman tub fixture
US4580643A (en) * 1984-09-10 1986-04-08 Norton Christensen, Inc. Adjustable bearing section core barrel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1039006B (en) * 1954-11-17 1958-09-18 Helmut Huegel Dr Ing Core catcher for deep drilling tools
DE1185554B (en) * 1963-06-21 1965-01-21 Roland Joseph Du Berger Core tube
EP0134586A1 (en) * 1983-09-09 1985-03-20 Eastman Christensen Company Hydraulic lift inner barrel in a drill string coring tool

Also Published As

Publication number Publication date
CA2006607A1 (en) 1990-06-24
NO895214L (en) 1990-06-25
CA2006607C (en) 1997-02-11
EP0376044A2 (en) 1990-07-04
DE3843800C1 (en) 1990-04-12
NO895214D0 (en) 1989-12-22
EP0376044B1 (en) 1995-07-19
US5025872A (en) 1991-06-25

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