1. n. [Reservoir Characterization]
A process or procedure used to interpret petrophysical (usually wireline log) data. Usually representing a set of equations, algorithms, or other mathematical processes, petrophysical models often have multiple routines. For example, a deterministic model might include routines that calculate
Often, the model is calibrated using core, production, test, and other datasets. Although many software packages contain ready-built petrophysical models or component routines that can be called upon, many log-analysis problems are unique and require that "built-to-purpose" models be constructed. Construction of new petrophysical models is normally driven by the data available and the nature of the problem to be solved.
