...; Sherwood, 2010) and cleanup simulations with computational fluid dynamics (CFD). Fig. 3 Cleanup simulation results of a 3D radial probe and an XLD probe at two different formation anisotropic ratios. The formation anisotropic ratio is , where is vertical permeability and is horizontal permeability. Power...

.... In sandstones, the simulation results are in good agreement with measurements and confirm the dominance of water film conduction at low saturation range (Sw < 20%). For the carbonate samples with double pore size distribution, the electrical behavior depends strongly on the spatial distribution...

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... the source. After correcting for environmental effects, these porosities agree closely in clean formations. Residual separations between the three corrected porosities in shales are consistent with the separations expected from Monte Carlo simulation results. Examples illustrate shale effects and show...

... Upstream Oil & Gas simulation result new approximation matrix frequency Scatterer kHz equation approximation invasion equation log analysis approximation borehole conductivity integral equation anisotropy well logging accuracy receiver Symposium imaginary part spwla 44...