Title: Apparatus for attenuating noise in marine seismic streamers
Application Number: 200610054917 Application Date: 2006.02.16
Publication Number: 1821808 Publication Date: 2006.08.23
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01V1/38
Applicant(s) Name: PGS Americas Inc. Address:
Inventor(s) Name: Tenghamn Stig R. L.
Attorney & Agent: yang songling
Abstract:
     A marine seismic streamer has hydrophone housings positioned in the streamer, the hydrophone housings having ends and rigid side walls 21. Openings in the hydrophone housings are provided which substantially permit passage of pressure waves to the hydrophone but substantially attenuate passage of shear waves. The openings may be the in the end walls or the side walls of the housing, or alternatively the openings may be provided by providing the housing with open ends. A soft compliant solid material may be provided to fill the housing and the openings in the housing. The openings are dimensioned to act as shear wave attenuation ports, the dimensions being dependent on the viscosity and shear modulus of the soft compliant solid filler material.
Time: 6