Semi-infinite aquifer with no-flow boundary
Assumptions:
✓general assumptions for semi-infinite aquifer;
✓image well is single with the rate equal to that of the pumping well;
✓drawdown develops in three stages: non-steady-state, transitional (initial influence of the boundary) and quasi-steady-state.
Confined aquifer with lateral no-flow boundary.
a – cross-section; b – plan view.
Fundamental equation:
Laplace transform solution:
This solution is applicable to the following cases:
One well pumped at a constant rate
Pumping
Recovery
drawdown is measured from the beginning of the pumping test
drawdown is measured from the beginning of the recovery test
The whole test period including pumping /injection/ and recovery stages is analyzed
Several wells pumped at a constant rate
Pumping
One well pumped at a variable rate
Pumping
Several wells pumped at a variable rate
Pumping