Geophysics with applications to subsurface waste disposal: Case history

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Recent development in geophysical methods allows us to accurately map the distribution of seismic velocity, density and electrical conductivity beneath the surface and between boreholes. These physical properties are dependent on porosity, fluid saturation, fluid conductivity, pressure, temperature, clay content, and in some circumstances, permeability. Hydrological parameters may be measured or inferred from drill hole experiments or directly from core samples. The point measurements in a drill hole are then interpolated to the interwell volume using either statistical properties of the local geology or reasonable estimates of the geological structure and lithology. More direct evidence is obtained from well tests, ... continued below

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Lee, K.H. August 9, 2001.

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Recent development in geophysical methods allows us to accurately map the distribution of seismic velocity, density and electrical conductivity beneath the surface and between boreholes. These physical properties are dependent on porosity, fluid saturation, fluid conductivity, pressure, temperature, clay content, and in some circumstances, permeability. Hydrological parameters may be measured or inferred from drill hole experiments or directly from core samples. The point measurements in a drill hole are then interpolated to the interwell volume using either statistical properties of the local geology or reasonable estimates of the geological structure and lithology. More direct evidence is obtained from well tests, and interference tests between multiple wells, but these are ill posed inverse problems when it comes to defining the properties of the entire interwell volume. Furthermore such tests are impossible in the vadose zone. The interpolation of well data is often inaccurate or misleading and the central problem for all these studies is the lack of these fundamental parameters throughout the subsurface volume of interest.

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OSTI as DE00787164

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  • Rock Engineering for Underground Waste Isolation, Seoul (KR), 09/07/2001

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  • Report No.: LBNL--48776
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 787164
  • Archival Resource Key: ark:/67531/metadc723705

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  • August 9, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • April 5, 2016, 1:23 p.m.

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Lee, K.H. Geophysics with applications to subsurface waste disposal: Case history, article, August 9, 2001; California. (digital.library.unt.edu/ark:/67531/metadc723705/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.