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Simulating Head Recovery and Intermittent Discharge in Free Flowing Wells
Author(s) -
Székely Ferenc
Publication year - 2017
Publication title -
groundwater
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.84
H-Index - 94
eISSN - 1745-6584
pISSN - 0017-467X
DOI - 10.1111/gwat.12541
Subject(s) - inflow , head (geology) , mechanics , flow (mathematics) , process (computing) , aquifer , volumetric flow rate , constant (computer programming) , simulation , control theory (sociology) , petroleum engineering , computer science , geology , geotechnical engineering , physics , control (management) , geomorphology , groundwater , programming language , operating system , artificial intelligence
Modeling of the head recovery (buildup) in and intermittent operation of flowing wells lacks rigorous analytical tools. Presently different methods are applied in discharging and recovery phases. The presented reliable approximate solution considers a continuous free flow process and time variant screen loss parameters. The latter are temporarily set to large value to prevent inflow into the well bore during the single recovery or in repeated shut down periods. This method is called as screen loss control or SLC technique and is verified by means of comparative analysis with the constant rate pumping‐recovery test simulated in leaky aquifer. The evaluation of the free flow and recovery test in the free flowing well 28 (Artesia Heights) concluded with calibrated parameters close to those obtained in the earlier analyses based on split well flow process. The simulation of intermittent flowing well operation also underwent successful validation resulting in reasonable values of the Q w and s response functions.