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US 10,379,256 B2Granted
Combined seismic and electromagnetic survey configurations
AssigneePGS Geophysical AS
InventorsRobert James Adams, Barrett Moreing Cameron, Andrew Samuel Long
Life of this patent
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Abstract
A method and apparatus for marine surveying including towing an electromagnetic source having an electromagnetic cross-talk zone and an entanglement zone; towing a plurality of pieces of seismic equipment, wherein each piece of seismic equipment is towed outside of the electromagnetic cross-talk zone and the entanglement zone; actuating the electromagnetic source; and while actuating the electromagnetic source, acquiring seismic survey data with the plurality of pieces of seismic equipment.
Claims20
A method of marine surveying comprising:
- towing an electromagnetic source having an electromagnetic cross-talk zone and an entanglement zone with a survey vessel;
- towing a plurality of pieces of seismic equipment with the survey vessel, wherein each piece of seismic equipment is towed outside of the electromagnetic cross-talk zone and the entanglement zone;
- actuating the electromagnetic source;
- and
- while actuating the electromagnetic source, acquiring seismic survey data with the plurality of pieces of seismic equipment, wherein:
- the plurality of pieces of seismic equipment comprises a port seismic streamer spread and a starboard seismic streamer spread,
- the port seismic streamer spread comprises a first plurality of seismic streamers having receivers thereon,
- the starboard seismic streamer spread comprises a second plurality of seismic streamers having receivers thereon,
- all of the receivers on each of the seismic streamers are seismic receivers,
- the port seismic streamer spread is towed to a port side of the electromagnetic source, and
- the starboard seismic streamer spread is towed to a starboard side of the electromagnetic source.
8 more elements
Dependencies are inferred from the claim text.