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Hvorslev‘s solutions accounting for wellbore construction
Assumptions:
✓aquifer is confined or unconfined, anisotropic, of infinite lateral extent;
✓pumping well is partially penetrating;
✓drawdown is estimated in the pumping well.
a b c d
Possible wellbore positions in aquifer for slug tests analysis by Hvorslev’s method.
a – partially penetrating well at the top of confined aquifer; b – well placed in aquitard and contacting the aquifer only by bottom; c, d – partially penetrating well in unconfined aquifer (case d – only the bottom of the well open).
Methods of analysis and parameters being estimated
Plot |
Method |
Parameters |
Figure |
Comments |
straight line 1) |
a |
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b |
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c |
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d |
1) strait line should start from the origin of coordinates.
Hydraulic conductivity on the horizontal plane is estimated at given anisotropy factor on the vertical plane.