Marine electromagnetic measurement system
US6842006B2 · kind B2 · utility
78Cited by
12References
67Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2002 |
| Grant date | Jan 11, 2005 |
| Priority date | — |
| Expiry date | Nov 1, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/15
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sea-floor electromagnetic measurement device for obtaining underwater measurements of earth formations including a central structure and arms attached to the central structure so that they can pivot relative to the central structure. An electrode is attached to the end of each of the arms or to the central structure, and/or magnetometers are attached to the arms. A method for undertaking sea-floor electromagnetic measurements of earth formations including measuring electric fields at a selected distance from a central structure of an electromagnetic measurement system. Magnetic fields are then measured at the same location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.