DE118802C - - Google Patents
Info
- Publication number
- DE118802C DE118802C DENDAT118802D DE118802DA DE118802C DE 118802 C DE118802 C DE 118802C DE NDAT118802 D DENDAT118802 D DE NDAT118802D DE 118802D A DE118802D A DE 118802DA DE 118802 C DE118802 C DE 118802C
- Authority
- DE
- Germany
- Prior art keywords
- drill
- drill bit
- eccentric
- pipes
- bits
- 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.)
- Active
Links
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 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
- E21B10/00—Drill bits
- E21B10/64—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
- E21B10/66—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe the cutting element movable through the drilling pipe and laterally shiftable
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)
- Drilling Tools (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Nach vorliegender Erfindung werden rotirende Bohrer, z. B. Kernbohrer aus Stahl oder Diamantbohrkronen, oder auch Bohrkronen, welche mit geeigneten schneidenden Materialien besetzt sind, mit stufenförmigen, excentrischen Kronen hergestellt, um bei Tiefbohrungen unter den Rohren das Bohrloch derart gröfser zu bohren, dafs die Rohre dem Bohrer stets folgen können.According to the present invention, rotating drills, e.g. B. core drills made of steel or diamond core bits, or drill bits, which are filled with suitable cutting materials, with step-shaped, eccentric bits manufactured in order to drill the borehole larger under the pipes when drilling deep, that the pipes can always follow the drill.
Bei diesen Rotationsbohrkronen wird entweder eine kleinere Bohrkrone in eine gröfsere ■excentrisch eingeschraubt oder eine solche excentrische Bohrkrone aus einem Stück hergestellt. Die kleinere untere, Krone dient als Führung, die obere excentrische Krone als Erweiterungsbohrer. With these rotary drill bits, either a smaller drill bit is converted into a larger one ■ Eccentrically screwed in or such an eccentric drill bit made from one piece. The smaller, lower crown serves as a guide, the upper eccentric crown as an extension drill.
Auf der Zeichnung ist in den Fig. 1 bis 3 beispielsweise ein Diamantbohrer solcher Art veranschaulicht, α ist die kleinere Bohrkrone, b die dazu excentrische, gröfsere Krone.In the drawing, for example, a diamond drill of this type is illustrated in FIGS. 1 to 3, α is the smaller drill bit, b is the larger, eccentric bit.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE118802C true DE118802C (en) |
Family
ID=387972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT118802D Active DE118802C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE118802C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4321974A (en) * | 1978-12-16 | 1982-03-30 | Hydroc Gesteinsbohrtechnik Gmbh | Annular drilling hammer |
-
0
- DE DENDAT118802D patent/DE118802C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4321974A (en) * | 1978-12-16 | 1982-03-30 | Hydroc Gesteinsbohrtechnik Gmbh | Annular drilling hammer |
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