Modification of the Step Drawdown Test for Pump Selection

by Otto J. Helweg, King Faisal Univ, Saudi Arabia,



Document Type: Proceeding Paper

Part of: Water Forum '86: World Water Issues in Evolution

Abstract:

This paper suggests a slightly modified mathematical model for pump tests whose aim is to design the correct pump for a well. The advantage of the model presented is that it incorporates time into the equation so that drawdown at any discharge and time can be predicted, thereby overcoming one of the limitations of the step drawdown test. The model is tested on a number of wells constructed in different kinds of aquifers and the results presented.

Subject Headings: Pumping tests | Drawdown (hydrology) | Mathematical models | Wells (water) | Mathematics | Water discharge | Hydrologic models

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