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GONZALO PULIDO-SILVA
Department of Civil Engineering, National University of Colombia,
Bedrock Bioremediation Center
Ph.D. Candidate, University of New Hampshire
THOMAS P. BALLESTERO
Associate Professor, Department of Civil Engineering
Bedrock Bioremediation Center, University of New Hampshire
ABSTRACT- A Finite – Differences Model
was developed to estimate Hydraulic Conductivity (K) and Storage
Coefficient (S) from flowrate-drawdown-time data in a tested well
with or without monitoring wells. The numeric model takes into account
an initial dynamic water level, well storage, and flowrate variations
during pumping. In particular, these conditions are typically found
during the well purging required for Packer Water Sampling (PWS)
in Low Yield Formations (LYF). The numerical model allows the use
of PWS data as a Pumping Test (PT). the model was validated with
Theis and Jacob methods for small diameter wells, and the Papadopolus
method for large diameter wells. It was calibrated with hydraulic
results from pumping tests (that included observation wells). An
application of the model was to estimate K and S during PWS at a
LYF Fractured Bedrock; the results were compared with slug tests
analysis. A downloadable version for the model and six examples
are available below.
HYTESTS.exe (119KB)
Users' Manual
(Word Doc)
LargeDia.hyt
(549B)
Leakage.hyt (683B)
Recovery.hyt
(71KB)
Theis_Ja.hyt
(7KB)
Valida01.hyt
(5KB)
Valida1.hyt (2KB)
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