Figure F13. The principle of the simple induction tool. The vertical component of the magnetic field from the transmitting coil (T) induces a ground loop in the formation, which, in turn, is detected by the receiver coil (R) (redrawn, modified from Ellis, 1987).

Figure F13. The principle of the simple induction tool. The vertical component of the magnetic field from the transmitting coil (T) induces a ground loop in the formation, which, in turn, is detected by the receiver coil (R) (redrawn, modified from Ellis, 1987).