Analytical equations and methods for aquifer test analysis
Unsteady-state flow equation:
Equation for quasi-steady-state flow period:
Methods of analysis and parameters being estimated
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Method
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Parameters
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Comments
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straight line
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matching
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straight line
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matching
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straight line
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matching
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type line
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matching
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type line
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matching
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type line
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matching
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matching
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matching
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straight line
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matching
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bisecting line
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Unsteady-state flow equation:
Equation for quasi-steady-state flow period:
The last equation is applied to account for different values of storage coefficient during pumping (S) and recovery (S') period.
Methods of analysis and parameters being estimated
Plot
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Method
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Parameters
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Comments
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straight line 1)
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matching
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matching
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matching
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matching
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matching
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matching
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matching
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matching
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matching
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matching
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straight line
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matching
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straight line
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bisecting line
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bisecting line
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1) the straight line should start from the origin of coordinates;
s0 - drawdown at the end of pumping.
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Unsteady-state equation:
Equation for quasi-steady-state flow period:
where
Methods of analysis and parameters being estimated
Plot
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Method
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Parameters
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Comments
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matching
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straight line
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matching
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matching
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straight line
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matching
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straight line
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matching
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matching
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matching
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matching
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matching
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matching
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straight line
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matching
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bisecting line
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Unsteady-state equation:
Methods of analysis and parameters being estimated
Plot
|
Method
|
Parameters
|
Comments
|
|
straight line 1)
|
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|
matching
|
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|
straight line 1)
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matching
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straight line 1)
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matching
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type line 1)
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matching
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type line 1)
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matching
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type line 1)
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matching
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matching
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matching
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straight line 1)
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matching
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bisecting line
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1) method is applied for drawdown analysis only.
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