ABSTRACT
The major methods for the analysis of response data from slug tests in unconfined formations can all be discussed in the context of the hypothetical cross sections illustrated in Figure 6.1. The methods are primarily classified on the basis of whether or not the well screen (or the filter pack) intersects the water table. If the well is screened below the water table (Figure 6.1 A), the change in the saturated thickness during a test is usually quite small and the relevant physics can be represented by a linear mathematical model. If the screen intersects the water table (Figure 6. IB), the assumption of a constant saturated thickness or a constant effective screen length may no longer be appropriate and a nonlinear mathematical model may be required to represent the relevant physics. In the case of a well screened below the water table, the methods can be further subdivided on the basis of their conceptualization of the storage mechanism.
