dc.contributor.author | Zhao, Xiaomin | |
dc.contributor.author | Cheng, C. H. | |
dc.contributor.author | Tang, Xiaoming | |
dc.contributor.author | Toksoz, M. Nafi | |
dc.contributor.other | Massachusetts Institute of Technology. Earth Resources Laboratory | en_US |
dc.date.accessioned | 2012-12-04T14:57:59Z | |
dc.date.available | 2012-12-04T14:57:59Z | |
dc.date.issued | 1992 | |
dc.identifier.uri | http://hdl.handle.net/1721.1/75190 | |
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 |