Patent · US Active

Source arrangement and method for generating electromagnetic wavefields

US7919965B2 · kind B2 · utility

8Cited by

53References

28Claims

0Family size

Assignee

ELECTROMAGNETIC GEOSERVICES ASA · NO

Inventors

Tor Schaug-Pettersen · Trondheim, NO
Svein Ellingsrud · Trondheim, NO
Terje Eidesmo · Trondheim, NO
Jan-Aage Langeland · Garnes, NO

Key dates

Filing date	Dec 2, 2005
Grant date	Apr 5, 2011
Priority date	—
Expiry date	Dec 13, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG01V3/12
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A source arrangement for generating electrogmagnetic (EM) wavefields, comprising an EM signal generator, at least three electrodes (141-144) connected to the generator, and a control system. The electrodes are spaced apart but not all in line. The control system is arranged to apply non-coincident time-varying signals or transmissions from the generator between different pairs of the electrodes. The non-coincidence can be by applying the signals sequentially or by applying the signals out of phase.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.