This paper describes a computer model for studying the effect of dipping beds on the response of induction tools. Simulated tool response in an arbitrary number of dipping beds is obtained from calculations of the magnetic fields of an equivalent magnetic dipole with an axis arbitrarily oriented with respect to the direction of stratification. The effects of the borehole and the invaded zone are neglected to solve the problem in a closed form.

In addition to describing the model, we also study the effect of dip angle on the apparent resistivity and the apparent bed thickness as read by induction tools in several typical logging configurations.

Keywords:
thin bed, magnetic field, dip angle, structural geology, center-bed reading, thickness, converge, resistive bed, well logging, lamination
Subjects:
Exploration, development, structural geology, Formation Evaluation & Management, Open hole/cased hole log analysis, Reservoir Characterization
Copyright 1988, Society of Petroleum Engineers
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