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The influence of borehole design on the production and efficiency parameters of wells intaking Quaternary waters in the south of Łódź

Macuda J., Styrkowiec E.

AGH Drilling, Oil, Gas

2017

Vol. 34, no. 4

895--906

Quaternary wellbores are very liable to rapid drops of hydraulic efficiency mainly caused by clogging processes and the corrosion of the wellbore structure. The presence of such processes and their intensity largely depend on the hydrogeochemical conditions of the intaken aquifer and also the production rate and extraction method of a given wellbore. Among the major factors slowing down the hydraulic intensity are a correctly designed well, especially the properly selected type and design of the filter. A well designed wellbore filter should have low hydraulic resistance of the inflowing water and be resistant to clogging and corrosion in the given hydrochemical conditions. This allows for long and failure-free extraction of large high-production wells. The results of analyses of the effect of intake wellbore design on its hydraulic efficiency are presented in the paper. The intake wells producing Quaternary waters for waterworks in the southern part of Łódź were analyzed.