摘要：At seismic and sonic frequencies, the major cause of wave attenuation and dispersion in fluid-saturated rocks might be the wave-induced fluid flow on microscopic and mesoscopic scales. However, it is challenging to assess these effects as the attenuation mechanisms related to both heterogeneities that cannot be expected to be independent. This is due to the fact that, fluid flow taking placing at the mesoscopic scale may be impacted by squirt flow mechanism in the presence of microscopic heterogeneities via modifying the dry rock to be frequency-dependent complex moduli. Understanding the integrated effects, related to microscopic squirt flow and wave-induced fluid flow of mesoscopic heterogeneities, would be important for quantifying the relative contribution of the interdependent energy loss mechanisms. We introduce a procedure in this letter to estimate the frequency-dependent seismic attenuation and dispersion by considering the combined presence of microscopic and mesoscopic heterogeneities. The corresponding seismic reflections of a finely stratified model with a dispersive reservoir are calculated using a propagator matrix method in the frequency domain to study the sensitivity of seismic signatures to pore-fluid mobility and rock heterogeneities.
© 2018 IEEE.

ISSN号：1545-598X

卷、期、页：v 15,n 8,p1174-1178

发表日期：2018-08-01

期刊分区（SCI为中科院分区）：三区

收录情况：SCIE（科学引文索引网络版）,ESI（基本科学指标数据库）,EI（工程索引）

发表期刊名称：IEEE GEOSCIENCE AND REMOTE SENSING LETTERS

通讯作者：吴新豫,付坤,周丹

第一作者：贺艳晓,王尚旭

论文类型：期刊论文

论文概要：贺艳晓,吴新豫,付坤,周丹,王尚旭，Modeling the effect of microscopic and mesoscopic heterogeneities on frequency-dependent attenuation and seismic signatures，IEEE GEOSCIENCE AND REMOTE SENSING LETTERS，2018，v 15,n 8,p1174-1178

论文题目：Modeling the effect of microscopic and mesoscopic heterogeneities on frequency-dependent attenuation and seismic signatures