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US 2012/0236684 A1Published application
Sensor arrangement for detecting motion induced noise in towed marine electromagnetic sensor streamers
AssigneePGS Geophysical AS
InventorsANDRAS ROBERT JUHASZ, Gustav Göran Mattias Südow, Ulf Peter Lindqvist
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Abstract
An electromagnetic sensor streamer may include a jacket, at least one electromagnetic sensor in operational communication with a voltage measuring circuit disposed inside the jacket, and at least one wire coil. The at least one wire coil is in signal communication with the voltage measuring circuit, and the voltage measuring circuit is configured to determine motion-induced voltages imparted to the at least one electromagnetic sensor in the streamer.
Claims16
An electromagnetic sensor streamer, comprising:
- a jacket;
- at least one electromagnetic sensor in operational communication with a voltage measuring circuit disposed inside the jacket;
- and
- at least one wire coil,
- wherein the at least one wire coil is in signal communication with the voltage measuring circuit, and the voltage measuring circuit is configured to determine motion-induced voltages imparted to the at least one electromagnetic sensor in the streamer.
2 more elements
A method of electromagnetic surveying a subterranean formation comprising:
- towing a streamer with a vessel in a body of water, wherein the streamer comprises:
- a jacket,
- at least one electromagnetic sensor in operational communication with a voltage measuring circuit disposed inside the jacket,
- at least one wire coil, wherein the at least one wire coil is in signal communication with the voltage measuring circuit, and the voltage measuring circuit is configured to determine motion-induced voltages imparted to the at least one electromagnetic sensor in the streamer;
- detecting electromagnetic noise induced by motion of the streamer relative to the earth's magnetic field with the voltage measuring circuit;
- and
- detecting electromagnetic signals from the subterranean formation.
4 more elements
Dependencies are inferred from the claim text.