GB2170530B - Improvements relating to reamers - Google Patents
Improvements relating to reamersInfo
- Publication number
- GB2170530B GB2170530B GB08503041A GB8503041A GB2170530B GB 2170530 B GB2170530 B GB 2170530B GB 08503041 A GB08503041 A GB 08503041A GB 8503041 A GB8503041 A GB 8503041A GB 2170530 B GB2170530 B GB 2170530B
- Authority
- GB
- United Kingdom
- Prior art keywords
- reamers
- improvements relating
- relating
- 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
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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
-
- 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
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
-
- 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/02—Scrapers specially adapted therefor
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/001—Drilling a non circular hole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
- E21D1/03—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08503041A GB2170530B (en) | 1985-02-06 | 1985-02-06 | Improvements relating to reamers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08503041A GB2170530B (en) | 1985-02-06 | 1985-02-06 | Improvements relating to reamers |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8503041D0 GB8503041D0 (en) | 1985-03-06 |
GB2170530A GB2170530A (en) | 1986-08-06 |
GB2170530B true GB2170530B (en) | 1987-10-21 |
Family
ID=10574054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08503041A Expired GB2170530B (en) | 1985-02-06 | 1985-02-06 | Improvements relating to reamers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2170530B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105401883A (en) * | 2014-05-14 | 2016-03-16 | 衢州市易凡设计有限公司 | Pile hole intelligent expanding method |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB862393A (en) * | 1956-05-18 | 1961-03-08 | Gewerk Eisenhuette Westfalia | Roof support with goaf screen in mines |
GB878634A (en) * | 1957-01-24 | 1961-10-04 | Gewerk Eisenhuette Westfalia | Method and apparatus for the automatic winning of coal in steeply inclined seams, more particularly by means of a coal plough |
-
1985
- 1985-02-06 GB GB08503041A patent/GB2170530B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB8503041D0 (en) | 1985-03-06 |
GB2170530A (en) | 1986-08-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19930206 |