What’s new in exploration ///
Electromagnetic (EM) systems are rarely discussed or used for exploration in the US but have been in continuous use elsewhere in the world. EM is excellent for basin reconnaissance, producing accurate depth to basement, which is not always as obvious on seismic. Time-domain EM can be used to provide static corrections for seismic. Magnetotellurics (MT) shows great promise in high-resistivity formations, penetrating basalt to image underlying sedimentary rock, and in reservoir modeling, to monitor a flood front from the surface. If today’s electromagnetic technology can be used to better constrain plays, it can reduce exploration risk.
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