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An Experimental Research of Multi-level Airgun Array
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 78th EAGE Conference and Exhibition 2016, May 2016, Volume 2016, p.1 - 5
Abstract
In marine seismic acquisition, multi-level airgun array composed of subarrays at different water depths can effectively attenuate the source ghost reflection. It enhances both the low and high frequency contents of marine seismic data and especially the amplitude at the notch frequencies. Therefore the spectrum bandwidth of airgun array signal is broadened. A field acquisition experiment is conducted to verify the advantages of multi-level airgun array. However, the spectrum notch is not perfectly filled in this experiment. Based on the generation and compensation of airgun signature notch, a better arrangement of multi-level airgun array is presented to sufficiently fill the amplitude notch within the effective frequency band and to achieve a broader and flatter amplitude spectrum.