EP0376044A3 - Core-drilling tool - Google Patents
Core-drilling tool Download PDFInfo
- 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
Links
- 238000005553 drilling Methods 0.000 title abstract 3
- 210000000078 claw Anatomy 0.000 abstract 1
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).
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)
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)
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)
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 |
-
1988
- 1988-12-24 DE DE3843800A patent/DE3843800C1/de not_active Expired - Lifetime
-
1989
- 1989-12-12 EP EP89122882A patent/EP0376044B1/en not_active Expired - Lifetime
- 1989-12-15 US US07/451,090 patent/US5025872A/en not_active Expired - Lifetime
- 1989-12-22 NO NO89895214A patent/NO895214L/en unknown
- 1989-12-22 CA CA002006607A patent/CA2006607C/en not_active Expired - Fee Related
Patent Citations (3)
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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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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