NL20765C - - Google Patents
Info
- Publication number
- NL20765C NL20765C NL20765DA NL20765C NL 20765 C NL20765 C NL 20765C NL 20765D A NL20765D A NL 20765DA NL 20765 C NL20765 C NL 20765C
- Authority
- NL
- Netherlands
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
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/083—Roller bits with longitudinal axis, e.g. wobbling or nutating roller bit
-
- 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
- E21B10/265—Bi-center drill bits, i.e. an integral bit and eccentric reamer used to simultaneously drill and underream the hole
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)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB13470/26A GB263392A (en) | 1926-05-27 | 1926-05-27 | Improvements in rotary bits for well boring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL20765C true NL20765C (ja) | 1929-05-15 |
Family
ID=10023544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL20765D NL20765C (ja) | 1926-05-27 |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB263392A (ja) |
| NL (1) | NL20765C (ja) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711435B (zh) * | 2014-01-15 | 2016-01-06 | 宜昌神达石油机械有限公司 | 一种钻井用牙盘金刚石钻头 |
| CN112696155A (zh) * | 2019-10-22 | 2021-04-23 | 西南石油大学 | 一种具有后排齿水孔的pdc钻头 |
| CN112627737A (zh) * | 2020-11-30 | 2021-04-09 | 安东通奥科技产业股份有限公司 | 扩眼工具 |
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0
- NL NL20765D patent/NL20765C/xx active
-
1926
- 1926-05-27 GB GB13470/26A patent/GB263392A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB263392A (en) | 1926-12-30 |