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The Application of Broadband Ricker Wavelet in Thin Reservoir Description
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 79th EAGE Conference and Exhibition 2017, Jun 2017, Volume 2017, p.1 - 5
Abstract
Seismic data can be considered as the convolution between reflection coefficient and band limited wavelet. The usual wavelet is band limited, whose main lobe has the long time and side lobe energy is strong. Therefore, seismic signal has the serious interference and low resolution. The main lobe of wide-band Ricker wavelet (also called Yu’s wavelet) is narrow and side lobe amplitude is small. Due to the seismic data with wide-band Ricker wavelet’s spectrum characteristics, the interference effect is weak, which is more suitable for reservoir description. In this paper, the spectral inversion method based on the geological statistics is used, and the spectral inversion technique is improved. We can get the broadband data with high frequency and low frequency, and then the broadband data is transformed to the seismic data with Yu’s wavelet spectrum characteristics in order to improve the accuracy of reservoir description. The method in this paper is practical applied to real oilfield in Bohai sea, and the improvement of seismic data is fitter for the reservoir description, which shows the proposed method is feasible and effective.