Mesoscopic fluid flow simulation in double-porosity rocks

摘要: [1] A discrete Fourier transform algorithm is designed to simulate mesoscopic fluid flow(MFF) in double-porosity rocks. Double-porosity equations with MFF are derived. Results from pseudo-spectral simulation show transfers fast P waves and the first kind of slow waves' energy second waves, Biot diffusive mode significantly attenuates energy. We use a novel approach numerical grid method solve wave equations. conclude that wavefield's attenuation should be attributed two-step mechanism: (1) (2) macroscopic diffusion. Numerical estimations have shown model can produce high (0.32DB/10 m, 1/Q = 0.1083) seismic band (50 Hz).