The computed stream depletion rates and drawdown distributions from several analytical solutions (Theis, 1941; Glover and Balmer, 1954; Jacob, 1950; Hantush, 1965) were compared to those obtained using a two-dimensional groundwater flow model. The stream geometry was approximated as a semicircle. ...
Earth fissures are potential hazards that often cause severe damage and affect infrastructure, the environment, and socio-economic development. Owing to the complexity of the causes of earth fissures, the prediction of earth fissures remains a challengin
The importance of groundwater for food production systems is much higher in the intensively cultivated South Asia region where >60 % of irrigation is through groundwater irrigation (Sikka et al., 2020). However, indiscriminate pumping has led to widespread groundwater depletion in the region (...
Exponential (b=0) Highly undersaturated oil reservoirs, high-pressure gas reservoirs, oil and gas reservoirs with small drawdown relative to reservoir pressure, tubing-restricted wells, reservoirs with poor waterflood performance, gas wells undergoing liquid loading. Hyperbolic (0<b<1) Solution...
This solution is shown to be appropriate to characterize the pumping test drawdown behavior in heterogeneous transmissivity fields making use of ensembles of simulated pumping tests with multiple combinations of statistical parameters. Based on the Effective Well Flow Solution, a method is developed for ...
However, evaluating the usefulness of gravity, used either alone or together with piezometric measurements, to help constrain hydraulic parameters through aquifer testing is difficult because observations of drawdown in a monitoring well and gravity measurements respond to different physical states of the ...
In most states there are requirements for aquifer testing when production wells are permitted, and at minimum most drillers will perform specific capacity and step-drawdown tests. Often these data are not analyzed for hydraulic properties by the drillers and the data is in the well completion ...
On the other hand, radius of investigation is qualitatively defined as the maximum distance from a pumping well up to which aquifer properties have a significant influence on drawdown at the well. The exact meaning of the term significant is open to interpretation and, consequently, various ...
Pumping testTransmissivitySpecific capacityTaiwanThe observation of yield-drawdown response in the course of pumping test, as well as its derived application for aquifer characterization, is an essential practice in a geotechnical investigation. On the basis of that, for providing a reasonable estimate ...