Online published: 2011-12-20
The conventional AVO model numerical simulation based on convolution has some problems about wavelet settings, such as the selection of wavelet, wavelet frequency and wavelet continuity and so on. In order to overcome these disadvantages, this paper proposed a newAVOmodel numerical simulation method which is based on wave equation from the aspect of seismic numerical simulation. Based on sonic and density log data, this method uses Zoeppritz equation or approximate equation to calculate reflection coefficient of a corresponding incident angle firstly （being consistent with the conventional method）. Secondly, extend the reflectance to two-dimensional horizontal layered velocity model and reflection model, and then use the frequency-wave field offset method to calculate numerical simulation of earthquake wave field. Thirdly, extract the seismic trace as AVOnumerical simulation of a corresponding incident angle. This method has heavy computation, but it uses advantages ofwave equation numerical simulation effectively, and can obtain the same simulation records with the field observation records, so it has practical value.
SA Liming , YAO Fengchang , DI Bangrang , YAO Yao . Study on AVO model numerical simulation based on wave equation[J]. Lithologic Reservoirs, 2011 , 23(6) : 102 -105 . DOI: 10.3969/j.issn.1673-8926.2011.06.019
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