What is the use of induction log?

Induction logging is a geophysical technique used in oil and gas exploration to measure the electrical properties of subsurface formations. By applying an alternating electromagnetic field, it assesses the conductivity of the rock and fluids within it, helping to identify hydrocarbon presence and differentiate between water and oil-bearing formations. This data is crucial for making informed drilling and production decisions. Induction logs are particularly valuable in environments where resistivity measurements are challenging due to high salinity or complex geology.