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AN EFFICIENT WAVENUMBER-SPACE-TIME-DOMAIN FINITE-DIFFERENCE MODELING METHOD OF ACOUSTIC WAVE EQUATION FOR SYNTHESIZING CMP GATHERS
AN EFFICIENT WAVENUMBER-SPACE-TIME-DOMAIN FINITE-DIFFERENCE MODELING METHOD OF ACOUSTIC WAVE EQUATION FOR SYNTHESIZING CMP GATHERS
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机译：CMP合成器声波方程的有效波数-时空域有限差分建模方法
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摘要
The present invention relates to an efficient sound wave equation finite difference method modeling scheme for combining wave number-space-time-domain common midpoint collection data. More specifically, the efficient sound wave equation finite difference method modeling scheme for combining wave number-space-time-domain common midpoint collection data is derived from a two-dimensional time area wave equation for a horizontal stratigraphic medium and comprises the following steps: calculating a wave number-space-time-domain wave equation by performing Fourier transform with respect to an x direction which is one of spatial variables while the derived wave equation is calculated by using the finite difference method; generating common midpoint collection data by adding a parallel shifting term without sorting data processing; and limiting a range of the wave number even though many wave number elements to be calculated by sampling theorem.
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