Pulsed electromagnetic dipmeter method and apparatus employing coils with finite spacing
US5115198A · kind A · utility
59Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1989 |
| Grant date | May 19, 1992 |
| Priority date | — |
| Expiry date | Sep 14, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The transmitter and receiver coils (35,40) in an electromagnetic dipmeter (10) are separated by a finite spacing (L) to remove borehole positional effects. Dip and strike are then determined with the same methods available for zero spacing devices by pulsing the transmitter signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.