FR2277192B1 - - Google Patents
Info
- Publication number
- FR2277192B1 FR2277192B1 FR7423079A FR7423079A FR2277192B1 FR 2277192 B1 FR2277192 B1 FR 2277192B1 FR 7423079 A FR7423079 A FR 7423079A FR 7423079 A FR7423079 A FR 7423079A FR 2277192 B1 FR2277192 B1 FR 2277192B1
- Authority
- FR
- France
- 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
- 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
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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7423079A FR2277192A1 (fr) | 1974-07-03 | 1974-07-03 | Outil elargisseur de forage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7423079A FR2277192A1 (fr) | 1974-07-03 | 1974-07-03 | Outil elargisseur de forage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2277192A1 FR2277192A1 (fr) | 1976-01-30 |
| FR2277192B1 true FR2277192B1 (ko) | 1976-12-24 |
Family
ID=9140814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7423079A Granted FR2277192A1 (fr) | 1974-07-03 | 1974-07-03 | Outil elargisseur de forage |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2277192A1 (ko) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105064922B (zh) * | 2015-08-25 | 2018-02-06 | 中铁十一局集团第四工程有限公司 | 一种用于回旋钻的扩孔钻头 |
| CN105804061B (zh) * | 2016-03-15 | 2017-07-14 | 安徽省城建设计研究总院有限公司 | 一种旋挖桩基底部扩孔的装置 |
-
1974
- 1974-07-03 FR FR7423079A patent/FR2277192A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2277192A1 (fr) | 1976-01-30 |