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Marine Controlled-source Electromagnetic Surveys for Hydrocarbon Exploration  

Kim, Hee-Joon (Department of Environmental Exploration Engineering, Pukyong National University)
Han, Nu-Ree (Department of Civil, Urban and Geosystem Engineering, Seoul National University)
Choi, Ji-Hyang (Department of Civil, Urban and Geosystem Engineering, Seoul National University)
Nam, Myung-Jin (Groundwater and Geothermal Resources Division, Korea Institute of Geoscience and Mineral Resources)
Song, Yoon-Ho (Groundwater and Geothermal Resources Division, Korea Institute of Geoscience and Mineral Resources)
Suh, Jung-Hee (Department of Civil, Urban and Geosystem Engineering, Seoul National University)
Publication Information
Geophysics and Geophysical Exploration / v.9, no.2, 2006 , pp. 163-170 More about this Journal
Abstract
The shortage of proven hydrocarbon reserves has resulted in exploration progressing from the offshore into progressively deeper water of the continental shelf. Despite the success of seismic acquisition at ever greater depths, there are marine geological terrenes in which the interpretation of seismic data is difficult, such regions dominated by scattering or high reflectivity that is characteristic of carbonate reefs, volcanic cover and submarine permafrost. A marine controlled-source electromagnetic (CSEM) method has recently been applied to the oil and gas exploration thanks to its high-resistivity characteristics of the hydrocarbon. In particular, this method produces better results in terms of sensitivity under the deep water environment rather than the shallow water. Only in the last five years has the relevance of CSEM been recognized by oil companies who now use it to help them make exploration drilling decisions. Initial results are most promising and several contractors now offer magnetotelluric and CSEM services.
Keywords
deep water; hydrocarbon; electromagnetic; CSEM;
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