An Approximation of Inner Boundary Conditions for Wells Intersecting Highly Conductive Structures - BRGM - Bureau de recherches géologiques et minières Accéder directement au contenu
Article Dans Une Revue Groundwater Année : 2019

An Approximation of Inner Boundary Conditions for Wells Intersecting Highly Conductive Structures

Résumé

Inner boundary conditions describe the interaction of groundwater wells with the surrounding aquifer during pumping and are associated with well-skin damage that limits water production and water derived from wellbore storage. Pumping test evaluations of wells during immediate and early time flow require assignment of inner boundary conditions. Originally, these concepts were developed for vertical well screens, and later transferred to wellbores intersecting highly conductive structures, such as preferential flow zones in fractured and karstic systems. Conceptual models for pumping test analysis in complex bedrock geology are often simplified. Classic analytical solutions generally lump or ignore conditions that limit or enhance well productivity along the well screen at the onset of pumping. Numerical solutions can represent well drawdowns in complex geological settings, such as karst systems, more precisely than many analytical solutions by accounting for additional physical processes and avoiding assumptions and simplifications. Suitable numerical tools for flow simulations in karst are discrete pipe-continuum models that account for various physical processes such as the transient hydraulics of wellbores intersecting highly conductive structures during pumping.
Fichier principal
Vignette du fichier
giese2019.pdf (528.26 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-02413758 , version 1 (01-09-2020)

Identifiants

Citer

Markus Giese, Thomas Reimann, Rudolf Liedl, Benoît Dewandel, Jean-Christophe Maréchal, et al.. An Approximation of Inner Boundary Conditions for Wells Intersecting Highly Conductive Structures. Groundwater, 2019, ⟨10.1111/gwat.12947⟩. ⟨hal-02413758⟩
133 Consultations
259 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More