Abstract
The chapter discusses EM data acquisition methods in the laboratory and subsurface environments. The chapter also provides information about various interpretation models and workflows for geological characterization and formation evaluation. Following that, the chapter presents the use of various electromagnetic logging tools for subsurface multifrequency EM data acquisition. Several case studies of subsurface EM log acquisition and interpretation are elaborated and analyzed in the chapter. Different EM log-interpretation workflows are discussed for various formations, including conventional sandstone, shaly-sand, carbonate, turbidities, and unconventional formations. Finally, the chapter discusses the integration of EM measurements with other physical measurements, such as NMR and formation testing measurements, for purposes of reducing the uncertainties in estimation and to estimate new formation properties that can only be computed using joint-interpretation methods.
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