1.
n. [Formation Evaluation]
The technique of determining what a given sensor would measure in a given
formation and environment by applying a set of
theoretical equations for the sensor response. Forward
modeling is used to determine the general response of most electromagnetic
logging measurements, unlike nuclear measurements whose response is determined mainly in laboratory experiments. Forward modeling is also used for
interpretation, particularly in horizontal wells and complex environments. In this case, iterative forward modeling is used. The set of theoretical equations (the forward models) can be 1D, 2D or 3D. The more complex the geometry, the more factors can be modeled but the slower the computing time.