EFFICIENT INTERPOLATION OF SEISMIC DATA BASED ON ITERATIVE APPLICATION OF DISCRETE FOURIER TRANSFORM
N.E. Biruchkov1, A.S. Serdyukov1,2, G.S. Chernyshov1
1Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
2Chinakal Institute of Mining, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Seismic survey, reflected waves, interpolation, regularization, Fourier transformation, optimization
Abstract
When conducting seismic surveys on the ground, it is usually not possible to placereceivers with a uniform sufficiently frequent step over the area of observation. Interpolation (regularization) is an effective tool for generating additional seismic records without changing the spectral composition of data over time and with expansion of the spectral composition over space. This paper considers the optimization of a regularization algorithm based on iterative application of discrete Fourier transform (DPF) over a space known as ALFT (Anti-leakage Fourier transform). The proposed modification of ALFT is a way to reduce the set of sample wave numbers when performing DPF. The effectiveness of the proposed algorithm was confirmed by processing both synthetic and field data. The calculation time was reduced several times compared to the original algorithm, and the results of restoring missed traces did not worsen. The results are valuable from a practical point of view and can be applied in future to the processing of ground-based seismic data on an industrial scale.
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