QQ客服 官方微博 反馈留言

	Velocity field of wave-induced local fluid flow in double-porosity media
	BA Jing ; ZHANG Lin ; SUN WeiTao ; HAO ZhaoBing ; BA Jing ; ZHANG Lin ; SUN WeiTao ; HAO ZhaoBing
	2016-03-30 ; 2016-03-30
关键词	double-porosity medium elastic wave propagation local fluid flow velocity dispersion Biot-Rayleigh equations petrophysical experiment P584
其他题名	Velocity field of wave-induced local fluid flow in double-porosity media
中文摘要	Under the excitation of elastic waves,local fluid flow in a complex porous medium is a major cause for wave dispersion and attenuation.When the local fluid flow process is simulated with wave propagation equations in the double-porosity medium,two porous skeletons are usually assumed,namely,host and inclusions.Of them,the volume ratio of inclusion skeletons is low.All previous studies have ignored the consideration of local fluid flow velocity field in inclusions,and therefore they can not completely describe the physical process of local flow oscillation and should not be applied to the situation where the fluid kinetic energy in inclusions cannot be neglected.In this paper,we analyze the local fluid flow velocity fields inside and outside the inclusion,rewrite the kinetic energy function and dissipation function based on the double-porosity medium model containing spherical inclusions,and derive the reformulated Biot-Rayleigh(BR)equations of elastic wave propagation based on Hamilton’s principle.We present simulation examples with different rock and fluid types.Comparisons between BR equations and reformulated BR equations show that there are significant differences in wave response characteristics.Finally,we compare the reformulated BR equations with the previous theories and experimental data,and the results show that the theoretical results of this paper are correct and effective.; Under the excitation of elastic waves,local fluid flow in a complex porous medium is a major cause for wave dispersion and attenuation. When the local fluid flow process is simulated with wave propagation equations in the double-porosity medium,two porous skeletons are usually assumed,namely,host and inclusions. Of them,the volume ratio of inclusion skeletons is low. All previous studies have ignored the consideration of local fluid flow velocity field in inclusions,and therefore they can not completely describe the physical process of local flow oscillation and should not be applied to the situation where the fluid kinetic energy in inclusions cannot be neglected. In this paper,we analyze the local fluid flow velocity fields inside and outside the inclusion,rewrite the kinetic energy function and dissipation function based on the double-porosity medium model containing spherical inclusions,and derive the reformulated Biot-Rayleigh(BR) equations of elastic wave propagation based on Hamilton's principle. We present simulation examples with different rock and fluid types. Comparisons between BR equations and reformulated BR equations show that there are significant differences in wave response characteristics. Finally,we compare the reformulated BR equations with the previous theories and experimental data,and the results show that the theoretical results of this paper are correct and effective.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/149396]
专题	清华大学
推荐引用方式 GB/T 7714	BA Jing,ZHANG Lin,SUN WeiTao,et al. Velocity field of wave-induced local fluid flow in double-porosity media[J],2016, 2016.
APA	BA Jing.,ZHANG Lin.,SUN WeiTao.,HAO ZhaoBing.,BA Jing.,...&HAO ZhaoBing.(2016).Velocity field of wave-induced local fluid flow in double-porosity media..
MLA	BA Jing,et al."Velocity field of wave-induced local fluid flow in double-porosity media".(2016).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。