Multi-component marine electromagnetic signal aquisition cable and system
AssigneeKJT Enterprises, Inc.
InventorsKurt M. STRACK, Stefan L. HELWIG
Life of this patent
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Abstract
A marine electromagnetic sensor cable includes a plurality of sensor modules disposed at spaced apart locations along a cable. Each module includes at least one pair of electrodes associated therewith. The electrodes are arranged to measure electric field in a direction along the direction of the cable. A plurality of spaced apart magnetic field sensors is associated with each module and arranged to enable determining an electric field amplitude in a direction transverse to the direction of the cable from magnetic field gradient.
Claims28
A marine electromagnetic sensor cable, comprising:
- a plurality of sensor modules disposed at spaced apart locations along a cable, each module including at least one pair of electrodes associated therewith, the electrodes arranged to measure electric field in a direction along the direction of the cable;
- and
- a plurality of spaced apart magnetic field sensors associated with each module and arranged to enable determining an electric field amplitude in a direction transverse to the direction of the cable from magnetic field gradient.
A marine electromagnetic surveying system, comprising:
- a vessel towing at least one electromagnetic antenna in a body of water;
- a controllable source of electric current disposed on the vessel;
- a plurality of sensor modules disposed at spaced apart locations along a cable, each module including at least one pair of electrodes associated therewith, the electrodes arranged to measure electric field in a direction along the direction of the cable;
- and
- a plurality of spaced apart magnetic field sensors associated with each module and arranged to enable determining an electric field amplitude in a direction transverse to the direction of the cable from magnetic field gradient.
Dependencies are inferred from the claim text.