Pseudoanalytical modeling of electromagnetic well-logging sensors inside directional wells

Logging-while-drilling (LWD) electromagnetic sensors provide real-time resistivity data of the geophysical Earth formation for oilfield exploration. Proactive geosteering allows the exploration of deviated and horizontal wells by means of real-time adjustments in the drilling direction to steer the well towards a target region. In this paper, we describe a new pseudoanalytical technique to analyze LWD tools inside directional wells by using sections of toroidal structures, where axial bending is present. Preliminary results demonstrate the ability of our method to accurately modeling LWD tools in deviated drilling conditions.