Directional electromagnetic measurements insensitive to dip and anisotropy
US6969994B2 · kind B2 · utility
65Cited by
16References
75Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2002 |
| Grant date | Nov 29, 2005 |
| Priority date | — |
| Expiry date | Nov 20, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems and methods are provided for directional propagation-type logging measurements not sensitive to dip and anisotropy over a wide frequency range. Estimates of the distance of the logging tool to a bed boundary are obtained using “up-down” measurements with antenna configurations having tilted magnetic dipoles. These estimates are insensitive to anistropy and dip, undesirable complications of directional measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.