Numerical Modeling of Slug Tests with MODFLOW Using Equivalent Well Blocks |
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| Authors: | Lichao Yang Xu‐Sheng Wang Jimmy J Jiao |
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| Institution: | 1. Department of Earth Sciences, The University of Hong Kong, Hong Kong, China.;2. School of Water Resources and Environment, China University of Geosciences, Beijing, China. |
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| Abstract: | Slug tests are a widely used technique to estimate aquifer hydraulic parameters and the test data are generally interpreted with analytical solutions under various assumptions. However, these solutions are not convenient when slug tests are required to be analyzed in a three‐dimensional model for complex aquifer‐aquitard systems. In this study, equivalent well blocks (EWB) are proposed in numerical modeling of slug test data with MODFLOW. Multi‐well slug tests in partially penetrating wells with skin zones can be simulated. Accuracy of the numerical method is demonstrated by benchmarking with analytical solutions. The EWB method is applied in a case study on slug tests in aquitards in the Pearl River Delta, China. |
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