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Analytical Solution for Subsurface Gas Flow to a Well Induced by Surface Pressure Fluctuations
Author(s) -
Rossabi Joseph,
Falta Ronald W.
Publication year - 2002
Publication title -
groundwater
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.84
H-Index - 94
eISSN - 1745-6584
pISSN - 0017-467X
DOI - 10.1111/j.1745-6584.2002.tb02492.x
Subject(s) - flow (mathematics) , mechanics , surface (topology) , materials science , petroleum engineering , environmental science , thermodynamics , geology , physics , mathematics , geometry
A simple analytical model is presented for predicting subsurface gas flow to a vadose‐zone well in response to atmospheric pressure fluctuations (barometric pumping). The effective radial permeability (k r ) in the vicinity of the well is determined during model calibration using less than two weeks worth of data. By combining the flow solution with a solution for the vertical gas pressure, only atmospheric pressure data are required to predict the induced flow through a well. The ability to quantitatively predict naturally induced flow in vadose‐zone wells by simple and inexpensive measurements is invaluable for systems using barometric pumping for remediation.