Abstract
The pressure or head response of an aquifer to a slug test in a fully penetrating well with wellbore storage and skin is presented. Three kinds of type curves are discussed: early time log‐log, intermediate time semilog, and late time log‐log. The early time response of the slug test depends on the presence of wellbore skin; hence two kinds of early time type curves are presented. When the active well has wellbore skin, the early time correlating parameter is the product of the skin and dimensionless storage. When wellbore skin is not present, the early time response is proportional to the square root of time, with dimensionless storage as the correlating parameter. The intermediate time semilog type curves are applicable when wellbore skin is not present. The late time type curves may be used when the dimensionless storage is greater than one and wellbore skin is positive or when the dimensionless storage is smaller than one and wellbore skin is negligible. The radius of investigation of the slug test is also examined with and without wellbore skin at the active well. Although the presence of wellbore skin reduces the magnitude of the dimensionless head responses at observation wells, the detectable radius of investigation is not significantly dependent on wellbore skin.
Published Version
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