CH655546B - - Google Patents
Info
- Publication number
- CH655546B CH655546B CH205082A CH205082A CH655546B CH 655546 B CH655546 B CH 655546B CH 205082 A CH205082 A CH 205082A CH 205082 A CH205082 A CH 205082A CH 655546 B CH655546 B CH 655546B
- Authority
- CH
- Switzerland
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813113514 DE3113514C2 (de) | 1981-04-03 | 1981-04-03 | Feststellvorrichtung für den Verlängerungsstempel eines Hydraulikzylinders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH655546B true CH655546B (xx) | 1986-04-30 |
Family
ID=6129277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH205082A CH655546B (xx) | 1981-04-03 | 1982-04-02 |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH655546B (xx) |
| DE (1) | DE3113514C2 (xx) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2607531B1 (fr) * | 1986-12-02 | 1989-02-24 | Delbaere Gilles | Dispositif de forage de sol agissant selon un axe sensiblement horizontal |
| AT397692B (de) * | 1992-02-19 | 1994-06-27 | Voest Alpine Bergtechnik | Schildvortriebsmaschine |
| CN104514500A (zh) * | 2013-09-27 | 2015-04-15 | 中国石油化工集团公司 | 一种用于超浅层水平井套管配重器 |
-
1981
- 1981-04-03 DE DE19813113514 patent/DE3113514C2/de not_active Expired
-
1982
- 1982-04-02 CH CH205082A patent/CH655546B/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE3113514C2 (de) | 1983-12-29 |
| DE3113514A1 (de) | 1982-11-18 |