Inventors:
Nils-Erik Jacobsen - Houston TX
Svein Torleif Vaage - Kolsas, NO
Rolf Ronningen - Houston TX
Assignee:
PGS Exploration (US), Inc. - Houston TX
International Classification:
G01V 138
G01V 136
Abstract:
A method and system are provided for use in marine seismic data surveys to increase fold and offset without increasing streamer length or drag on the streamer boat. Generally the method comprises the use of a second source boat positioned in the steamer path and firing the second source at a time before the recording of information from the first source is finished. By positioning the second source about one streamer length in front of the closest hydrophone, the fold is increased by two for the same length streamer.