Seismic matching pursuit decomposition based on the attenuated Ricker wavelet dictionary
X. Zhang, X. Feng, C. Liu, C. Chen, X. Li and Y. Zhang
Event name: 79th EAGE Conference and Exhibition 2017 - Workshops
Session: WS07 Advantages of integrating Geology, Geophysics and Reservoir Engineering for EOR in Carbonates
Publication date: 12 June 2017
Info: Extended abstract, PDF ( 823.93Kb )
Price: € 20
The wavelet dictionary is the critical part for the matching pursuit decomposition of seismic traces. In this study, considering the effects of the wave‐attenuation we develop a new wavelet atom based on the traditional Ricker wavelet, and thus form a new dictionary—the attenuated Ricker wavelet dictionary. Based on the proposed dictionary, we use the orthogonal matching pursuit to decompose an input seismic trace into a set of components, each of which can establish the relation between the quality factor Q and the spread time of the wavelet atom. Then we can derive the Q model of the underground medium by smooth algorithms. By compensating the amplitude attenuation of each decomposed wavelet atom, the input seismic trace can be compensated. We test our algorithm with a synthetic trace and a field seismic profile preliminarily, the seismic wave‐attenuation can be well compensated and the resolution is improved.