Modeling electromagnetics on cylindrical meshes with applications to steel-cased wells
Figure 7:Current density for a time domain experiment where one electrode is connected to the top of the casing and a return electrode is on the surface, 1000m away. Six different times are shown, corresponding to each of the six rows; the times are indicated in the plots in panel (d). Panel (a) shows a zoomed-in cross section of the current density in the immediate vicinity of the steel cased well. Panel (b) shows a cross section through the half-space along the same line as the source-wire. Panels (c) and (d) show depth-slices of the currents at 54m and 801m depth.
