| US 7,545,703 B2 | ||
| Marine seismic streamer with varying spacer distances for reducing towing noise | ||
| Nils Lunde, Houston, Tex. (US); and Clet Antoine Landry, Katy, Tex. (US) | ||
| Assigned to PGS Geophysical AS, Lysaker (Norway) | ||
| Filed on Jul. 06, 2006, as Appl. No. 11/483,077. | ||
| Prior Publication US 2008/0008047 A1, Jan. 10, 2008 | ||
| Int. Cl. G01V 1/38 (2006.01) | ||
| U.S. Cl. 367—20 [367/154] | 9 Claims |
| 1. A seismic streamer, comprising:
a jacket covering an exterior of the streamer;
at least one strength member extending along the length of the jacket, the strength member disposed inside the jacket;
at least one seismic sensor disposed in an interior of the jacket;
an acoustically transparent material filling void space in the interior of the jacket; and
a plurality of spacers disposed at spaced apart locations along the strength member, distances between adjacent spacers being
varied along the streamer and selected to create a spatial filter to attenuate noise transmitted longitudinally along the
streamer, and wherein a maximum distance between adjacent spacers being approximately eighty percent greater than a minimum
distance between adjacent spacers.
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