<strong>Poststack internal multiples attenuation based on virtual events</strong>

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Abstract The attenuation of prestack internal multiples based on virtual seismic events is computationally costly and hinders seismic data processing. We propose a multiples attenuation method for poststack seismic data by approximating conventional virtual events. The proposed method is iterative. The proposed method is tested using 2D synthetic and the field poststack seismic datasets. Compared with the conventional virtual events method, the proposed method does not require data regularization and offers higher computation efficiency. The method requires to know the travel time of the primary reflection waves. The results of the application to 2D field datasets suggest that the proposed method attenuates the internal multiples while highlighting the deep primaries.

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Key words： Virtual events poststack internal multiple land seismic data

Received: 2018-02-12;

Fund:

This research is supported by the National Natural Science Foundation of China (No. 41674122), National Science and Technology Major Project of China (No. 2016ZX05004003), and National Basic Research Program of China (No. 2013CB228602).

Cite this article:

. Poststack internal multiples attenuation based on virtual events[J]. APPLIED GEOPHYSICS, 2018, 15(3-4): 491-499.

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