In recent years, more oil and gas reserves have been added to the world’s proven hydrocarbon endowment through reserves growth than through discovery. Opportunities for significant discoveries in simple geological settings or hospitable locales have greatly diminished.

With the consequent greater emphasis on improving oil and gas recovery rates in existing fields, it is more critical than ever to obtain a clear picture of the subsurface to optimize oil and gas reservoir management. The key parameters in imaging the subsurface are the quality of resolution and the diversity of measurement methods.