Abstract
This paper suggests a new method of analyzing the data of slug tests. The method is based on the observation that in many cases the buildup, H( t), decays exponentially. That is, H( t) = H 0e λt , where αmma is a positive constant. It is shown that the measured value of αmma can be used to estimate K, the hydraulic conductivity of the aquifer in the close vicinity of the well. The proposed method is demonstrated on field data of several slug tests. The earlier explanation of exponential decay in slug tests employs a modified version of the Thiem equation, which is based on certain steady-flow assumptions. In this work it is shown that the phenomenon is not limited to steady flow and that it is likely to occur under a wide range of conditions. The use of slug tests as a tool for monitoring the effects of clogging in small-diameter observation wells is introduced.
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