FR2179794A1 - - Google Patents
Info
- Publication number
- FR2179794A1 FR2179794A1 FR7311896A FR7311896A FR2179794A1 FR 2179794 A1 FR2179794 A1 FR 2179794A1 FR 7311896 A FR7311896 A FR 7311896A FR 7311896 A FR7311896 A FR 7311896A FR 2179794 A1 FR2179794 A1 FR 2179794A1
- 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.)
- Granted
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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/14—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using liquids and gases, e.g. foams
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids
-
- 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
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/001—Cooling arrangements
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722216920 DE2216920A1 (de) | 1972-04-08 | 1972-04-08 | Bohrverfahren |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2179794A1 true FR2179794A1 (enExample) | 1973-11-23 |
| FR2179794B1 FR2179794B1 (enExample) | 1974-05-17 |
Family
ID=5841335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7311896A Expired FR2179794B1 (enExample) | 1972-04-08 | 1973-04-03 |
Country Status (5)
| Country | Link |
|---|---|
| AT (1) | AT314445B (enExample) |
| CH (1) | CH556955A (enExample) |
| DE (1) | DE2216920A1 (enExample) |
| FR (1) | FR2179794B1 (enExample) |
| IT (1) | IT980449B (enExample) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19953819A1 (de) * | 1999-11-09 | 2001-05-10 | Zueblin Ag | Kombination aus HDI-Verfahren und Bodenvereisung zur Herstellung von Dichtwänden |
-
1972
- 1972-04-08 DE DE19722216920 patent/DE2216920A1/de active Pending
- 1972-06-09 AT AT497872A patent/AT314445B/de not_active IP Right Cessation
-
1973
- 1973-03-02 IT IT4909673A patent/IT980449B/it active
- 1973-03-20 CH CH414473A patent/CH556955A/xx not_active IP Right Cessation
- 1973-04-03 FR FR7311896A patent/FR2179794B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2216920A1 (de) | 1973-10-11 |
| AT314445B (de) | 1974-04-10 |
| CH556955A (de) | 1974-12-13 |
| IT980449B (it) | 1974-09-30 |
| FR2179794B1 (enExample) | 1974-05-17 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |