Invaded zone evolution reconstructed from logging data

Dielectric Permittivity Dispersion Measurements in Downhole Conditions – Effect on Porosity Measurements (Russian)

“…Например, можно указать метод скважинного определения пористости в индукционным каротаже с использованием закона Арчи (Karpov et al, 2014;Makarov et al, 2012;Eltsov et al, 2011;Makarov et al, 2010;Gladkikh et al, 2009;Makarov et al, 2009;Antonov et al, 2009;Eltsov et al, 2009;Makarov et al, 2008). Например, можно указать метод скважинного определения пористости в индукционным каротаже с использованием закона Арчи (Karpov et al, 2014;Makarov et al, 2012;Eltsov et al, 2011;Makarov et al, 2010;Gladkikh et al, 2009;Makarov et al, 2009;Antonov et al, 2009;Eltsov et al, 2009;Makarov et al, 2008).…”

Beyond Carbon Steel: Detecting Wellbore Shape and Cavities, and Cement Imperfections in Cased Wells

“…The alternating magnetic field provides necessary noise immunity for logging and excludes the influence of the geomagnetic field [24]. Significant work has been devoted to studying the influence of borehole media's electrical properties on electromagnetic logging signals, for example the dielectric permeability and its distribution [25], or change of electrical resistivity of the invaded zone [26]. The effect of magnetic permeability on the inductive response has been studied for metal detector applications [27] and logging applications [28,29].…”