Fracture Connectivity Effect on Seismic Attenuation in Fractured Porous Fluid-saturated Media
M. Novikov, V. Lisitsa, E. Caspari and N. Barbosa
Event name: Saint Petersburg 2018
Session: Seismic Exploration Technologies
Publication date: 09 April 2018
Info: Extended abstract, PDF ( 618.59Kb )
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In this paper we present numerical modelling of wave propagation in porous fractured fluid-saturated medium with finite-difference scheme approximating 2D Biot dynamic equations aimed at investigation of WIFF and scattering attenuation mechanisms impact on seismic wave. For this purpose we obtain frequency-dependent inversed quality factor using deconvolution of initial and propagated wave. We compare results of dynamic and quasi-static modelling to verify obtained data and estimate dynamic contribution in attenuation on relatively broad frequency range from 1 to 10 kHz. Besides, we consider fracture system geometry and physical properties of fracture-filling material effect on wave attenuation.