Coplanar coil array in laminated formations with linear transition zones

The one-dimensional profiles obtained by one coplanar coil array show polarization horns in front of horizontal bed interfaces, caused by accumulation of electric charges on those boundaries. This polarization effect allows a good positioning of thinly laminated reservoirs. Such horns are smoothed out when there is a gradational transition between the beds. In this work, we study the response of a coplanar coil array in a thinly laminated reservoir. We also study the behavior of the polarization horns in linear transition zones between beds. We build the transition zone with a sequence of thin homogeneous layers whose resistivities varies linearly.