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Technology of Suppression Sea Bottom Multiples at the Caspian Sea Offshore ZoneNormal access

Authors: A. Iakovlev, P.G. Stewart, S.V. Gorbachev and V.P. Gazaryan
Event name: 1st EAGE International Geosciences Conference on Kazakhstan
Session: Petroleum systems
Publication date: 15 November 2010
DOI: 10.3997/2214-4609.20145698
Organisations: EAGE
Language: Russian
Info: Extended abstract, PDF ( 1Mb )
Price: € 20

Results of sea bottom multiples suppression methods application at the Caspian Sea offshore zone presented herewith. It was demonstrated that application of multicomponent sea bottom receivers enables steadily application of sea bottom multiples the suppression by PZ-stacking method, especially essential at the near offset, where it is complicated to select primary reflected waves from multiples by travel-time characteristics. Application of SRME and high resolution Radon at the following stages of processing enables effectively suppress partly ringing interfering waves. However the key objection in overall application of multi-component sea bottom receivers is the cost of those works. One of the ways to eliminate seismic survey expenses is to use detached sea bottom receivers instead of OBC. Herewith demonstrated comparative evaluation of application different systems and methods of offshore seismic surveys and estimated feasibility efficiency of application 4-components nodes.

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