Space sensitivity of relative parameters in high-frequency electromagnetic logging

The study develops methods for approximate simulation of high-frequency relative parameters in models of 2D conducting media using the pseudogeometrical factor approach. Linear representation of magnetic field is applied to obtain equations of pseudogeometrical factors for relative amplitude and phase difference which define conductivity and permittivity dependences of signals. Modeling the contributions of separate zones of the subsurface to the signals allowed inferences on the down-well resolution of sounding. The new algorithms for the integral contributions and pseudogeometrical factors proved to be efficient tools in instrument design and data processing.