DE943341C - Reamers for deep drill bits - Google Patents
Reamers for deep drill bitsInfo
- Publication number
- DE943341C DE943341C DEW12858A DEW0012858A DE943341C DE 943341 C DE943341 C DE 943341C DE W12858 A DEW12858 A DE W12858A DE W0012858 A DEW0012858 A DE W0012858A DE 943341 C DE943341 C DE 943341C
- Authority
- DE
- Germany
- Prior art keywords
- inserts
- scraper
- drill bit
- borehole
- calibration
- 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.)
- Expired
Links
- 229910003460 diamond Inorganic materials 0.000 claims description 7
- 239000010432 diamond Substances 0.000 claims description 7
- 238000005553 drilling Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 238000005065 mining Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 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
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
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)
- Earth Drilling (AREA)
Description
Die Erfindung betrifft einen Räumer für Tiefbohrzwecke, wie er an, sich hinter mit Diamantdisken versehenen Bohrkronen als mit diesen verbundener Rotationskörper bekannt ist, der an seinem Umfang ebenfalls mit Diamantdisken aufweisenden Einsätzen versehen ist. Diese bekannten Räumer haben den Nachteii, daß sie schnell unbrauchbar werden, weil einmal ihr der Bohrkrone zugekehrtes Ende vorzeitig verschleißt und zum andern die Disken der Einsätze ungleichmäßig zum Eingriff kommen. Außerdem sind die bekannten Räumer nicht geeignet, die bei Tiefbohrungen erwünschte Kalibrierung des Bohrloches zu gewährleisten.The invention relates to a reamer for deep drilling purposes, as it is at, behind drill bits provided with diamond disks as a body of revolution connected to them is known, which is also with diamond disks having inserts on its circumference is provided. These known scrapers have the disadvantage that they quickly become unusable because once its end facing the drill bit wears out prematurely and on the other hand, the disks of the inserts come into engagement unevenly. Also are the known scrapers are not suitable, the calibration required for deep drilling of the borehole.
Erfindungsgemäß wird daher vorgeschlagen, daß die mit einer schräg. zum Bohrloch verlaufenden Oberfläche versehenen Diamanteinsätze zwischen einem der Bohrkrone zugekehrten Ringbelag aus Hartmetall und zum Kalibrieren dienenden Diamanteinsätzen vorgesehen sind.According to the invention it is therefore proposed that the with an oblique. to the borehole extending surface provided diamond inserts between one of the Carbide ring coating facing the drill bit and diamond inserts for calibration are provided.
Zwar ist es bereits bekannt, in einer. Bohrkrone eine zweite Bohrkrone konzentrisch orzusehen, hinter welcher mit Diamantdisken versehene Einsätze angeordnet sind, deren Oberflächen ebenfalls schräg zum Bohrloch verlaufen. Diese Einsätze dienen aber zum Zerkleinern des Bohrkerns, nicht aber zum Räumen des Bohrloches oberhalb der Krone. Auch sind Kernbohrer für Tiefbohrungen bekannt, bei denen hinter derBohrkrone eire bi.rnenförmi@ger, mit Hartmetalletücken bestückter Rotationskörper vorgesehen ist, der aber auch nicht zum Räumen, sondern zum Erweitern des von der Krone vorgebohrten Loches dient.True, it is already known in one. Drill bit a second drill bit To look concentrically behind which inserts provided with diamond disks are arranged are whose surfaces also run obliquely to the borehole. These stakes but serve to crush the drill core, but not to clear the borehole above the crown. Core drills for deep drilling are also known, where behind the drill bit eire bi.rnenförmi@ger, tipped with hard metal pieces is intended, but it is not intended to be used for broadening, but for expanding the Crown pre-drilled hole is used.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung schematisch veranschaulicht, und zwar zeigt Abb,, i den Räumar im Schnitt und Abb.. 2. in Ansicht.An exemplary embodiment of the invention is shown schematically in the drawing illustrates, namely Fig. i shows the Räumar in section and Fig. 2. in view.
Mit i .sind die am Umfang des Räumers 2 befestigten Räümereinsätze bezeichnet, deren Oberflächen im Winkel x schräg zur Bohrlochwandung 3 verlaufen, so@ daß alle Diamantkörper dieser Einsätze nacheinander zur Räumleistung herangezogen werden. 4 stellt die Einsätze dar, die nur Kalibrierzwecken dienen und zu den Einsätzen i versetzt angeordnet sind.With i .sind the scraper inserts attached to the circumference of the scraper 2 denotes whose surfaces run at an angle x obliquely to the borehole wall 3, so @ that all diamond bodies of these inserts are used one after the other for clearing performance will. 4 shows the inserts that are only used for calibration purposes and for the inserts i are staggered.
Damit das der Bohrkrone 5 zugekehrte Ende des Räumers nicht vorzeitig verschleißt, ist es zweckmäßig, an diesem Ende einen Ringbelag 6 aus Hartmetall vorzusehen, der beispielsweise aufgeschweißt ist. DerAußenumfang des Ringbelages 6 liegt mit der Unterkante und die Oberflächen der Kalibriereinsätze, liegen mit der Oberkante der Räumereinsätze bündig.So that the end of the reamer facing the drill bit 5 does not come prematurely wears out, it is useful to have a ring lining 6 made of hard metal at this end to be provided, which is welded, for example. The outer circumference of the ring lining 6 lies with the lower edge and the surfaces of the calibration inserts lie with flush with the top edge of the scraper inserts.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEW12858A DE943341C (en) | 1953-12-19 | 1953-12-19 | Reamers for deep drill bits |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEW12858A DE943341C (en) | 1953-12-19 | 1953-12-19 | Reamers for deep drill bits |
Publications (1)
Publication Number | Publication Date |
---|---|
DE943341C true DE943341C (en) | 1956-05-17 |
Family
ID=7594910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEW12858A Expired DE943341C (en) | 1953-12-19 | 1953-12-19 | Reamers for deep drill bits |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE943341C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2319005A1 (en) * | 1975-07-21 | 1977-02-18 | Christensen Inc | DRILL ROD CONNECTION EQUIPPED WITH A WEAR PROTECTION DEVICE |
FR2332414A1 (en) * | 1975-11-18 | 1977-06-17 | Moppes Et Sons Ltd Lm Van | Reamer for boring bar - has diamond cutting strips tapering towards trepanning tool and extending from head |
FR2458669A1 (en) * | 1979-04-02 | 1981-01-02 | Inst Gornogo Dela Sibirskogo O | DRILLING TOOL FOR A MACHINE FOR REALIZING PERCUSSION SURVEYS |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2256092A (en) * | 1940-04-06 | 1941-09-16 | J K Smit & Sons Inc | Diamond bit |
DE851332C (en) * | 1945-03-30 | 1952-10-02 | Salzgitter Maschinen Ag | Core drill for deep drilling |
-
1953
- 1953-12-19 DE DEW12858A patent/DE943341C/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2256092A (en) * | 1940-04-06 | 1941-09-16 | J K Smit & Sons Inc | Diamond bit |
DE851332C (en) * | 1945-03-30 | 1952-10-02 | Salzgitter Maschinen Ag | Core drill for deep drilling |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2319005A1 (en) * | 1975-07-21 | 1977-02-18 | Christensen Inc | DRILL ROD CONNECTION EQUIPPED WITH A WEAR PROTECTION DEVICE |
FR2332414A1 (en) * | 1975-11-18 | 1977-06-17 | Moppes Et Sons Ltd Lm Van | Reamer for boring bar - has diamond cutting strips tapering towards trepanning tool and extending from head |
FR2458669A1 (en) * | 1979-04-02 | 1981-01-02 | Inst Gornogo Dela Sibirskogo O | DRILLING TOOL FOR A MACHINE FOR REALIZING PERCUSSION SURVEYS |
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