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Dynamic Fluid Flow In Heterogeneous Porous Media And Through A Single Fracture With Rough Surfaces

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Show simple item record Zhao, Xiaomin Cheng, C. H. Tang, Xiaoming Toksoz, M. Nafi
dc.contributor.other Massachusetts Institute of Technology. Earth Resources Laboratory en_US 2012-12-04T14:57:59Z 2012-12-04T14:57:59Z 1992
dc.description.abstract This study investigates the frequency-dependence of fluid flow in heterogeneous porous media using the theory of dynamic permeability and a finite-difference method. Given a permeability distribution, the dynamic permeability is applied locally to calculate the frequency-dependence of fluid flow at each local point. An iterative Alternating Direction Implicit finite-difference technique is applied to calculate the flow field in the frequency domain. We compare the flow through a 2-D heterogeneous porous medium and that through an equivalent homogeneous medium and find that the two media do not behave equivalently as a function of frequency. At very low-frequencies, the heterogeneous medium is less conductive than the homogeneous medium, However, in the transition region from quasi-static to dynamic regimes, the former medium becomes more conductive than the latter medium, with the ratio of the former flow over the latter flow reaching a maximum in this region. The larger the scale, or the higher the degree of the heterogeneity, the higher this maximum is. This finding is important for studying the interaction of a borehole stoneley wave with a heterogeneous porous formation. The finite-difference technique is also applied to simulate frequency-dependent flow through a single fracture with rough surfaces. It is shown that the flow exhibits strong frequency-dependence even for small fractures with contacting surfaces. The amount of flow through the fracture is reduced by the surface roughness . en_US
dc.description.sponsorship Massachusetts Institute of Technology. Borehole Acoustics and Logging Consortium en_US
dc.description.sponsorship United States. Dept. of Energy (Grant DE-FG02-86ERI3636) en_US
dc.publisher Massachusetts Institute of Technology. Earth Resources Laboratory en_US
dc.relation.ispartofseries Earth Resources Laboratory Industry Consortia Annual Report;1992-07
dc.title Dynamic Fluid Flow In Heterogeneous Porous Media And Through A Single Fracture With Rough Surfaces en_US
dc.type Technical Report en_US
dc.contributor.mitauthor Zhao, Xiaomin
dc.contributor.mitauthor Cheng, C. H.
dc.contributor.mitauthor Toksoz, M. Nafi
dspace.orderedauthors Zhao, Xiaomin; Cheng, C. H.; Tang, Xiaoming; Toksoz, M. Nafi en_US

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