石油物探2017，Vol.56Issue(3)：319-327,337,10.DOI:10.3969/j.issn.1000-1441.2017.03.002
随机斑块饱和孔隙介质模型研究
Study on the continuous random porosity model of patchy saturation
摘要
Abstract
To study the influence of patchy saturation on seismic wave propagation under mesoscopic scale,we investigate the continuous random model of patchy saturation,usually called CRM for short,and propose modified continuous random model (MCRM).Dispersion and attenuation characteristics of P-wave in inhomogeneous saturated porous media with gas and water are investigated by MCRM.Then,we compared the simulation results of three models with experimental ones and obtained the following conclusions.MCRM and CRM are provided with the same P-wave velocities at low or high frequency limits and the same attenuation peak,while the characteristic frequency of MCRM gets bigger and the attenuation curve of MCRM is narrowed.MCRM and White`s model are also with the same P-wave velocities at low or high frequency limits,while dispersion curve of MCRM changes slowly,and attenuation peak of MCRM is slightly smaller.MCRM can simulate the effects of permeability,water saturation and frequency on the dispersion and attenuation and can explain the measured data of sandstone samples with high or low porosity.This study can help to better understand the viscoelastic behavior of rocks and improve the accuracy of quantitative seismic interpretation.关键词
随机斑块饱和/孔隙介质/纵波频散特征/统计特征/敏感参数Key words
random patchy saturated/porous media/dispersion characteristic of compressional wave/statistical characteristics/sensitive parameter分类
天文与地球科学引用本文复制引用
未晛..随机斑块饱和孔隙介质模型研究[J].石油物探,2017,56(3):319-327,337,10.基金项目
国家重点基础研究发展计划(973计划)项目(2014CB239006)和国家科技重大专项课题(2016ZX05046-002)联合资助.This research is financially supported by the National Key Basic R&D Program of China (973 Program) (Grant No.2014CB239006) and the National Science and Technology Major Project of China (Grant No.2016ZX05046-002). （973计划）
