Phase difference versus offset (PDVO)

Phase versus offset data that has been normalised using results from a reference receiver.

PDVO is an attribute derived from electromagnetic measurements. It is the first data analysis performed and used for quality control. Although the approach does not provide reliable depth information, it has a short turnaround time and enables a qualitative assessment to be made that shows the relative changes in resistivity that can help to verify the accuracy of the initial resistivity model.