Tuesday, December 10, 2013

Curve Matching With Multiple Observation Wells

When you analyze a pumping test with more than one observation well, AQTESOLV matches one set of aquifer properties to the drawdown data from all of the wells in your data set.
One set of aquifer properties matched to two observation wells from a constant-rate pumping test in an unconfined aquifer with delayed yield.
In the figure shown above, the curve-fitting analysis determines the properties of an unconfined aquifer with delayed yield from the two observation wells displayed on the graph.

Of course, if your data set has multiple observation wells, you may match wells individually or in groups with AQTESOLV as well. To perform visual curve matching on selected wells, choose Wells from the Edit menu to see all of the wells in your data set. Right click over a well in the list and choose Hide Observations to turn off the display of the well; to turn on the display a previously hidden well, choose Show Observations when you right click over a well.
Choose Edit>Wells to add, modify or delete wells from an AQTESOLV data set.
To select more than one well at a time, hold down the Ctrl key when clicking on wells in the list shown above.

AQTESOLV allows you to select which wells to use for automatic curve matching, too. Choose Automatic from the Match menu and click the Active Wells tab. Remove the check next to any well that you wish to ignore during automatic matching.
Choose Match>Automatic>Active Wells to select wells to match with automatic curve matching.
Selections in the Active Wells list shown above only affect the wells used for automatic matching, not the display of well data.

Visit the Support Center and the Knowledge Base at the AQTESOLV website for additional tips and examples.

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