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Single-well push-pull test in transient Forchheimer flow field

Wang, Quanrong ; Zhan, Hongbin ; Wang, Yanxin

Journal of Hydrology, June 2017, Vol.549, pp.125-132 [Periódico revisado por pares]

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  • Título:
    Single-well push-pull test in transient Forchheimer flow field
  • Autor: Wang, Quanrong ; Zhan, Hongbin ; Wang, Yanxin
  • Assuntos: Finite-Difference Scheme ; Radial Dispersion ; Parameter Estimation ; Geography
  • É parte de: Journal of Hydrology, June 2017, Vol.549, pp.125-132
  • Descrição: Using the single-well push-pull (SWPP) test to quantify in situ aquifer characteristics associated with solute transport (dispersion coefficient, geobiochemical reaction rates), the accuracy of parameter estimation was not only dependent on the solute transport models but also the groundwater flow models. However, many previous studies on the SWPP test were based on assumptions over-simplifying the flow field, namely, groundwater flow followed Darcy’s law; flow was in the steady state during the entire test duration; the wellbore storage could be negligible. In this study, we have carefully examined such assumptions by developing a new finite-difference model of the SWPP test under the transient Forchheimer flow condition, considering the wellbore storage. The SWPP test included an injection phase, a chaser phase, a rest phase, and an extraction phase. The results showed that the concentration of the steady-state flow solution was greater than that of the transient flow solution...
  • Idioma: Inglês

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