Removing sea surface-related electromagnetic fields in performing an electromagnetic survey
US7430474B2 · kind B2 · utility
2Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2006 |
| Grant date | Sep 30, 2008 |
| Priority date | — |
| Expiry date | Nov 17, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/083
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
To perform surveying of a subterranean structure, electromagnetic (EM) wavefields traveling in opposite directions are determined. A relationship is defined among the EM wavefields, where the EM wavefields include a first set of EM wavefields in a first state in which a sea surface is present, and a second set of EM wavefields in a second, different state in which the sea surface is not present. At least one EM wavefield in the relationship is determined to perform removal of sea surface-related effects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.