Modeling electromagnetics on cylindrical meshes with applications to steel-cased wells

Field strength ratio (FSR), the ratio of the measured vertical magnetic field with the free space magnetic field, as a function of frequency for two different reciever locations. In (a), the reciever is in the same plane as the source, in (b), the reciever is 1.49m offset from the source.

Figure 8:Field strength ratio (FSR), the ratio of the measured vertical magnetic field with the free space magnetic field, as a function of frequency for two different reciever locations. In (a), the reciever is in the same plane as the source, in (b), the reciever is 1.49m offset from the source.