Analytical equations and methods for aquifer test analysis
Unsteadystate flow equation:
Equation for quasisteadystate flow period:
Methods of analysis and parameters being estimated
Plot

Method

Parameters

Comments


straight line



matching




straight line



matching




straight line



matching




type line



matching




type line



matching




type line



matching




matching




matching




straight line



matching




bisecting line




Unsteadystate flow equation:
Equation for quasisteadystate 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

Method

Parameters

Comments


straight line 1)



matching




matching




matching




matching




matching




matching




matching




matching




matching




matching




straight line



matching




straight line




bisecting line




bisecting line



1) the straight line should start from the origin of coordinates;
s0  drawdown at the end of pumping.


Unsteadystate equation:
Equation for quasisteadystate flow period:
where
Methods of analysis and parameters being estimated
Plot

Method

Parameters

Comments


matching




straight line



matching




matching




straight line



matching




straight line



matching




matching




matching




matching




matching




matching




straight line



matching




bisecting line





Unsteadystate equation:
Methods of analysis and parameters being estimated
Plot

Method

Parameters

Comments


straight line 1)



matching




straight line 1)



matching




straight line 1)



matching




type line 1)



matching




type line 1)



matching




type line 1)



matching




matching




matching




straight line 1)



matching




bisecting line



1) method is applied for drawdown analysis only.

