NL172919A - - Google Patents
Info
- Publication number
- NL172919A NL172919A NL172919DA NL172919A NL 172919 A NL172919 A NL 172919A NL 172919D A NL172919D A NL 172919DA NL 172919 A NL172919 A NL 172919A
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
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)
- Fats And Perfumes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2264652A GB714910A (en) | 1952-09-09 | 1952-09-09 | Apparatus for automatically filling well casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL172919A true NL172919A (da) |
Family
ID=10182809
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL172919D NL172919A (da) | 1952-09-09 | ||
| NL89031D NL89031C (da) | 1952-09-09 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL89031D NL89031C (da) | 1952-09-09 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE515111A (da) |
| FR (1) | FR1068128A (da) |
| GB (1) | GB714910A (da) |
| NL (2) | NL89031C (da) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9605801D0 (en) * | 1996-03-20 | 1996-05-22 | Head Philip | A casing and method of installing the casing in a well and apparatus therefore |
-
0
- NL NL172919D patent/NL172919A/xx unknown
- BE BE515111D patent/BE515111A/fr unknown
- NL NL89031D patent/NL89031C/xx active
-
1952
- 1952-09-09 GB GB2264652A patent/GB714910A/en not_active Expired
- 1952-10-10 FR FR1068128D patent/FR1068128A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB714910A (en) | 1954-09-01 |
| NL89031C (da) | |
| BE515111A (da) | |
| FR1068128A (fr) | 1954-06-22 |