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Time Delays in Simultaneous-Source Acquisition and Its Impact on Low FrequenciesNormal access

Authors: K.E. Haavik, Å.S. Pedersen and M. Thompson
Event name: 80th EAGE Conference and Exhibition 2018
Session: Simultaneous Source - Acquisition and Processing
Publication date: 11 June 2018
DOI: 10.3997/2214-4609.201800640
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 761.15Kb )
Price: € 20

Summary:
Simultaneous-source acquisition enables more efficient and/or denser seismic data acquisition. While acquiring simultaneous source data is a relatively simple extension of conventional operations, separating the signal from the different sources is a more involved process. Modern simultaneous source acquisition is enabled by applying time delays to one or more of the sources in order for the separation process to work. Here we present a theoretical study on the effect of this time delay on the emitted signal from the simultaneous sources. Our findings suggests that small time delays are preferable over larger time delays when considering the amplitude and radiation pattern for low-frequencies (<15 Hz).


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