CA2007610A1 - Down hole drills using spent driving fluid for flushing purposes - Google Patents
Down hole drills using spent driving fluid for flushing purposesInfo
- Publication number
- CA2007610A1 CA2007610A1 CA 2007610 CA2007610A CA2007610A1 CA 2007610 A1 CA2007610 A1 CA 2007610A1 CA 2007610 CA2007610 CA 2007610 CA 2007610 A CA2007610 A CA 2007610A CA 2007610 A1 CA2007610 A1 CA 2007610A1
- Authority
- CA
- Canada
- Prior art keywords
- hammer
- drill
- cylinder
- down hole
- driving fluid
- 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
- 238000011010 flushing procedure Methods 0.000 title abstract 2
- 239000012530 fluid Substances 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000011435 rock Substances 0.000 abstract 1
Landscapes
- Earth Drilling (AREA)
Abstract
In a water driven down-the-hole rock drill, the rearward end of an associated hammer is provided with a drive piston reciprocable in a cylinder located adjacent the rear of the drill. The front end of the hammer is guided for reciprocation in a bearing located adjacent an anvil of a drill bit. Between the cylinder and the bearing the hammer is elongated and enlarged diametrically relative to the piston. The enlarged hammer portion reciprocates freely in a chamber formed by an outer casing of the drill.
Drive water is expelled from the cylinder and flushes the hole drilled by the bit. An open ended tubular valve reciprocates to control a duct connecting the interior of the valve to coaxial through-flushing channels in the hammer and the drill bit.
Drive water is expelled from the cylinder and flushes the hole drilled by the bit. An open ended tubular valve reciprocates to control a duct connecting the interior of the valve to coaxial through-flushing channels in the hammer and the drill bit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2007610 CA2007610C (en) | 1990-01-11 | 1990-01-11 | Down hole drills using spent driving fluid for flushing purposes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2007610 CA2007610C (en) | 1990-01-11 | 1990-01-11 | Down hole drills using spent driving fluid for flushing purposes |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2007610A1 true CA2007610A1 (en) | 1991-07-11 |
CA2007610C CA2007610C (en) | 1999-01-26 |
Family
ID=4143998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2007610 Expired - Lifetime CA2007610C (en) | 1990-01-11 | 1990-01-11 | Down hole drills using spent driving fluid for flushing purposes |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2007610C (en) |
-
1990
- 1990-01-11 CA CA 2007610 patent/CA2007610C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2007610C (en) | 1999-01-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |