NO159685C
Method for the magnetization of well casing
Abstract
A magnetic field is induced in a well casing. The location of this field may then be sensed while drilling another well and the direction of drilling modified in response to the sensed location of the first well. This allows one to either avoid or intersect the first well with the second well.
Term
No projected expiry on record.
- Priority
- Filed
- Granted
- Today
11 members in 4 offices
Priority claims9
| Document | Office | Kind | Date |
|---|---|---|---|
| 42601982 | United States of America | A | |
| 42602882 | United States of America | A | |
| 42603082 | United States of America | A | |
| 426019 | – | – | – |
| 426028 | – | – | – |
| 426030 | – | – | – |
| US19820426019 | – | – | – |
| US19820426028 | – | – | – |
| US19820426030 | – | – | – |
Members11
| Document | Office | Kind | |
|---|---|---|---|
| NO833476L | Norway | L | |
| EP0104854A2 | European Patent Office (EPO) | A2 | |
| US4458767A | United States of America | A | |
| US4465140A | United States of America | A | |
| EP0104854A3 | European Patent Office (EPO) | A3 | |
| NO871495D0 | Norway | D0 | |
| NO871496D0 | Norway | D0 | |
| CA1228639A | Canada | A | |
| CA1237764A | Canada | A | |
| NO159685B | Norway | B | |
| NO159685CThis record | Norway | C |
1 legal event, as the office reported them to INPADOC
Events
| Event | Code | |
|---|---|---|
| Lapsed by not paying the annual feesLapsedLAPSED IN MARCH 2003MM1K | MM1K |
Numbers
- Publication, DOCDB
- 159685
- Publication, EPODOC
- NO159685C
- Application
- 833476
- Application, DOCDB
- 833476
- Application, EPODOC
- NO19830003476
Titles2
- English
- PROCEDURE TE FOR MAGNETIZING BROENN LINING BEARS
- Norwegian
- FREMGANGSM TE FOR MAGNETISERING AV BROENN-FORINGSROER
Classification
- CPC, 4
- E21B7/04
- E21B47/02216
- E21B47/0228
- G01V3/26
- IPC, 3
- E21B7 04
- E21B47 022
- G01V3 26