摘要：Seismic wave dispersion and attenuation are important seismic attributes for characterizing oil and gas in geophysical exploration. When the seismic wave passes through the porous sedimentary rocks, the induced fluid oscillation between the rock-pore and wavelength scale exhibits significant seismic dispersion and attenuation, i.e., mesoscopic dispersion and attenuation. The corresponding mechanism and characteristics have always been a scientific issue of common concern in the fields of exploration geophysics and rock physics. It is also one of the frontiers and difficulties regarding the mesoscopic flow. In the paper, a numerical model is developed to investigate the effect of fluid distribution on mesoscopic dispersion and attenuation of partially saturated Indiana limestone using the drainage method. The fluid distributions in the sample are characterized by the CT scanning method, being the input of the numerical model under the framework of Biot's pore-elasticity theory to predict dispersion and attenuation. The consistency between the prediction and measurement suggests the feasibility of introducing digital petrophysics to analyze the porous fluid distribution quantitively as well as to predict the corresponding dispersion and attenuation characteristics.

关键字：3D digital core; Mesoscopic flow; Seismic wave; Dispersion; Attenuation

ISSN号：0001-5733

卷、期、页：卷66期8: 3444-3462

发表日期：2023-08-01

影响因子：0.000000

期刊分区（SCI为中科院分区）：四区

收录情况：SCI（科学引文索引印刷版）,SCIE（科学引文索引网络版）

发表期刊名称：CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION - 地球物理学报

参与作者：孙超,张怀,潘冬明

第一作者：唐跟阳,王尚旭,贺艳晓

论文类型：期刊论文

论文概要：孙超,张怀,唐跟阳,王尚旭,贺艳晓,潘冬明，3D digital core applied to numerically predict elastic response caused by mesoscopic flow，CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION - 地球物理学报，2023，卷66期8: 3444-3462

论文题目：3D digital core applied to numerically predict elastic response caused by mesoscopic flow