Pumping Test Analysis
AQTESOLV is advanced software for pumping test data analysis that features the most comprehensive set of solution methods for confined, leaky confined, unconfined and fractured aquifers.
- constant-rate pumping tests
- variable-rate pumping tests including recovery and intermittent pumping
- single-well tests
- interference tests (one or more observation wells)
- step-drawdown tests
- one or more pumping wells
- bounded aquifers
- prediction and test design
Pumping tests are alternately known as pump tests, aquifer tests and aquifer performance tests (APTs).
Summary of Pumping Test Solutions
|Summary of Pumping Test Solutions in AQTESOLV Pro|
|Solution Category||Methods Available|
|Delayed Obs. Well Response||5|
Constant-Rate Pumping Tests
AQTESOLV provides the most complete suite of methods for the interpretation of constant-rate and variable-rate pumping tests.
The figure below illustrates the application of the Tartakovsky and Neuman (2007) solution for a constant-rate pumping test in an unconfined aquifer with three-dimensional saturated/unsaturated flow and noninstantaneous drainage at the water table..
Analysis of a constant-rate pumping test in an anisotropic unconfined aquifer with noninstantaneous response at the water table (Tartakovsky and Neuman 2007).
Variable-Rate Pumping Tests
With AQTESOLV you are not limited to the analysis of traditional constant-rate pumping tests; interpretation of variable-rate conditions is also possible for situations including step-drawdown tests, recovery tests and sinusoidal pumping tests.
Displacement measured during a sinusoidal variable-rate pumping test in which the rate varied through several cycles of extraction and injection (Rasmussen et al. 2003).
Multiple Observation Wells (Interference Tests)
With AQTESOLV you may perform pumping test data analysis with more than one observation well.
Analysis of drawdown measured in pumped well and three observation wells during a constant-rate pumping test in a buried channel (strip) aquifer near Estevan, Saskatchewan, Canada (Walton 1970).
The buried channel aquifer example shown above uses a powerful feature in AQTESOLV that automatically generates image wells to model the effect of aquifer boundaries.
You also may perform distance-drawdown analysis in AQTESOLV to interpret pumping test data from more than one observation well. For a specific measurement time, drawdown is plotted as a function of the radial distance from the pumping well to the observation well.
Distance-drawdown plot showing three observation wells monitored during a constant-rate pumping test in a leaky confined aquifer (USBR 1995).
Multiple Pumping Wells
Use AQTESOLV to analyze pumping tests with more than one pumping well. Each well may have its own unique geometry (e.g., penetration depths) and pumping rate schedule. AQTESOLV places no internal limit on the total number of pumping wells that you may use.
Analysis of drawdown measured in observation well during constant-rate extraction test in an unconfined aquifer including residual effect of prior injection test at off-site well.
Predictive Modeling (Forward Solution)
You may use pumping test solutions in AQTESOLV to predict the magnitude and extent of drawdown for extraction and/or injection scenarios involving multiple pumping wells.
Drawdown prediction (forward solution) for an array of 15 extraction wells.