NO990232D0
Downhole tool using electromagnetic waves
Abstract
An apparatus for obtaining resistivity readings of the earth surrounding a wellbore (32) to determine the downhole location of the apparatus or to generate a log. The apparatus comprises an electromagnetic transmitter (40) for transmitting electromagnetic waves (42) into the earth. A current sensing device is electrically connected to the electromagnetic transmitter (40) for detecting the current drawn by the electromagnetic transmitter (40) during transmission of the electromagnetic waves (42).
Term
No projected expiry on record.
- Priority
- Filed and published
- Today
6 members in 4 offices
Priority claims3
| Document | Office | Kind | Date |
|---|---|---|---|
| 932298 | United States of America | A | |
| 932298 | – | – | – |
| US19980009322 | – | – | – |
Members6
| Document | Office | Kind | |
|---|---|---|---|
| NO990232D0This record | Norway | D0 | |
| CA2259760A1 | Canada | A1 | |
| EP0930518A2 | European Patent Office (EPO) | A2 | |
| NO990232L | Norway | L | |
| US6114972A | United States of America | A | |
| EP0930518A3 | European Patent Office (EPO) | A3 |
1 legal event, as the office reported them to INPADOC
Events
| Event | Code | |
|---|---|---|
| Withdrawal, rejection or dismissal of laid open patent applicationFC2A | FC2A |
Numbers
- Publication, DOCDB
- 990232
- Publication, EPODOC
- NO990232D
- Application
- 990232
- Application, DOCDB
- 990232
- Application, EPODOC
- NO19990000232
Titles
- Norwegian
- Elektromagnetisk motstandsmÕleverkt°y og fremgangsmÕte til bruk av dette
Classification
- CPC, 3
- G01V3/30
- E21B47/125
- E21B47/121
- IPC, 2
- E21B47 12
- G01V3 30