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| Svein Ellingsrud | Terje Eidesmo |
The concept was trialled using a towed, high-power source of EM energy and a series of receivers placed at known locations on the seabed. By logging the refracted energy from subsurface layers, Eidesmo and Ellingsrud were able to identify areas of high electrical resistivity - an indicator of hydrocarbons. Learn more about resistivity
Testing the theory
Following patent submission, the process of testing the theory continued unabated for five years - from small-scale tank tests to the rigours of a full survey in Angola and the Norwegian Sea.
EMGS established in 2002
The technique, initially termed seabed logging because of its similarities to borehole resistivity logging, proved successful. Electromagnetic Geoservices - EMGS - was established to provide the first commercial services in 2002.
Worldwide experience
Since then, we have conducted over 450 surveys to reduce exploration risk and improve drilling success rates across the world's mature and frontier basins - in water depths ranging from 32 to 3392 metres - for more than 40 customers, including the world's leading energy companies.
Market leader
EMGS remains the undisputed market leader, training the world's leading experts in the field and ceaselessly refining the technology and systems used to acquire, process, visualise, interpret and integrate marine EM data.