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Electromagnetics
Integrating measurements to reduce uncertainty
WesternGeco Electromagnetics (EM) provides a comprehensive range of marine magnetotelluric (MMT) and controlled-source electromagnetics (CSEM) services. These include initial modeling, survey design, acquisition, integrated data processing and interpretation for a wide range of applications. WesternGeco Electromagnetics has the capability to conduct both MMT and CSEM surveys as well as integrated projects involving both techniques. The final result is the integration of the EM measurement with the overall exploration workflow including seismic and available well data.
It is known that CSEM will detect resistors often associated with hydrocarbon deposits in marine environments; therefore, it represents a significant advance in deepwater oilfield exploration. CSEM has been called the most significant new technology in oilfield exploration since the development of 3D seismic acquisition 20 years ago. This technology may be applied to a wide variety of exploration targets; near surface to as deep as 4,000 m below the sea floor. The ability to predict reservoir fluid properties ahead of the drill bit means a considerable risk reduction for exploration programs and also a significant advantage while considering offshore license bidding.
WesternGeco EM has successfully completed deepwater MMT and CSEM surveys in most basins around the world, including North and South America, northwestern Europe, and West Africa. Operations are now expanding to include MMT and CSEM surveys in the Far East, Australia, and Russia.
As a part of Schlumberger, WesternGeco EM techniques are now combined with the best in downhole, well-to-well, cross-well, and well-to-surface EM and seismic technology and services. This integration allows WesternGeco EM to provide clients with unequalled EM survey capability worldwide via access to an extensive global support network, including 23 research and engineering facilities, and more than 70,000 employees in 80 countries.
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