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Hvorslev's solutions

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Hvorslev's solutions

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

 

b

c

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.