Recovery Efficiency From Single-Well Injection/Recovery Tests in a Limestone Aquifer of High Secondary Porosityby Vicente Quiñones-Aponte, US Geological Univ,
Document Type: Proceeding Paper
Part of: Artificial Recharge of Ground Water
An analytical advection-diffusion model was developed to assess the feasibility of injecting and recovering water in a limestone aquifer of high secondary porosity. The model was calibrated using data from two actual injection-recovery tests. Analysis of the volume injected, the actual amount recovered, and the total pumpage during the recovery indicates that advection is the most dominant force controlling this process when large quantities of water are injected. When small quantities of water are injected molecular diffusion dominates the transport phenomena. The analysis indicated that the model is more sensitive to variations in the matrix porosity and other geometric parameters than to changes in the molecular diffusion coefficient.
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