English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/180598
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Closed-form equation for subsidence due to fluid production from a cylindrical confined aquifer

AuthorsJayeoba, Ayodeji; Mathias, Simon A.; Nielsen, Stefan; Vilarrasa, Victor; Bjørnarå, Tore I.
Groundwater production
Confined aquifer
Analytical solution
Issue DateJun-2019
CitationJournal of Hydrology 573: 964-969 (2019)
AbstractGround surface subsidence due to groundwater production is a significant problem. Many attempts have been made to develop analytical models to forecast subsidence rates as a consequence of groundwater production. Previous analytical solutions either make limiting assumptions about the stress regime (e.g., radially symmetric with uniaxial strain or radially symmetric with zero incremental vertical total stress) or assume that the pressure distribution within the aquifer is uniform. Imposing assumptions about the stress regime lead to an overestimate of subsidence. Imposing a uniform pressure assumption often leads to an underestimate of subsidence. In this article, the principle of superposition is applied to extend a previous analytical solution, for a cylindrical uniform pressure change, to allow for a non-uniform pressure distribution resulting from constant rate production of a viscous fluid from a cylindrical confined aquifer of finite permeability. Results from the analytical solution are verified by comparison with a set of fully coupled hydro-mechanical finite element simulations. The analytical solution for subsidence directly above the production well (or uplift above an injection well) can be written in closed-form and is straightforward to evaluate. The equation also shows that, for many practical purposes, ground surface subsidence is insensitive to production fluid viscosity and aquifer permeability when the aquifer radius is less than the aquifer depth below the ground surface.
Publisher version (URL)https://doi.org/10.1016/j.jhydrol.2019.03.041
Appears in Collections:(IDAEA) Artículos
Files in This Item:
File Description SizeFormat 
Closed-form equation for subsidence due to fluid production from.pdf Embargoed until June 1, 2021221,69 kBAdobe PDFThumbnail
View/Open    Request a copy
Show full item record
Review this work

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.