Effects of conductive well casings on electromagnetic surveys : experimental studies and numerical modelling, The
Controlled source electromagnetic (CSEM) surveys can be used in petroleum exploration to supplement seismic reflection data because electrical resistivity is highly sensitive to pore space fluid content. Traditionally, CSEM has been used in greenfields exploration, but the method has the potential for application later in the life of a producing field. However, such monitoring would be performed in the presence of electrically conductive steel infrastructure, such as well casings and pipelines. These features introduce considerable artifacts into data gathered for development, production and ...
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