NO990232L
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
- Published
- Today
6 members in 4 offices
Priority claims1
| Document | Office | Kind | Date |
|---|---|---|---|
| 932298 | United States of America | A |
Members6
| Document | Office | Kind | |
|---|---|---|---|
| NO990232D0 | Norway | D0 | |
| CA2259760A1 | Canada | A1 | |
| EP0930518A2 | European Patent Office (EPO) | A2 | |
| NO990232LThis record | 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
- Application
- 990232
Titles2
- English
- Electromagnetic resistance measuring tools and methods for using them
- Norwegian
- Elektromagnetisk motstandsmåleverktöy og fremgangsmåte til bruk av dette
Classification
- CPC, 2
- G01V3/30
- E21B47/125
- IPC, 2
- E21B47 12
- G01V3 30