Hydrogeologist workbench (ANSQUICK) > Drawdown during aquifer tests > Steady-state solutions

"Two wells" tab of "Dipole test" dialog box.

Explanatory table for tab "Two wells"

"Q, m^3/day" text box	Constant pumping and injection rate of wells. The pumping rate and the injection rate are the same
"s, m" text box	This field shows calculated drawdown or drawup. Drawup is recorded with a negative sign
"Unconfined aquifer" option	Choice between confined aquifer and unconfined aquifer
"k, m/day" text box	Hydraulic conductivity of aquifer
"m, m" text box	Thickness of confined aquifer or initial saturation of unconfined aquifer
"r1, m" text box	Distance from the pumping well to an observation well
"r2, m" text box	Distance from injection well to observation well

Steady-state equation for confined aquifer:

and unconfined aquifer:

"Two screens" tab of "Dipole test" dialog box.

Explanatory table for tab "Two screens"

"Q, m^3/day" text box	Constant pumping rate from upper screen and injection rate in lower screen. The pumping rate and the injection rate are the same
"s1, m" and "s2, m" text box	Fields show calculated drawdown and drawup in screens. Drawup is recorded with a negative sign
"z1, m" and "z2, m" text box	Vertical distance from aquifer top to center of upper screen (1) and lower screen (2)
"lw, m" text box	Lenght of screen. Length screens are the same
"kx, m/day" text box	Horizontal hydraulic conductivity of aquifer
"kz, m/day" text box	Vertical hydraulic conductivity of aquifer
"B, m" text box	Leaky factor
"Leaky" option	Leaky aquifer
"m, m" text box	Aquifer thickness
"rw, m" text box	Pumping well radius

Steady-state equation for no-leaky aquifer:

Steady-state equation for leaky aquifer:

β = z1 – for upper screen, β = z2 – for lower screen.

"Infinity aquifer" tab of "Dipole test" dialog box.

Explanatory table for tab "Infinity aquifer"

"Q, m^3/day" text box	Constant pumping rate from upper screen and injection rate in lower screen. The pumping rate and the injection rate are the same
"sw, m" text box	Fields show calculated drawdown or drawup in screens. Drawup is recorded with a negative sign
"s, m" text box	Fields show calculated drawdown or drawup in observation well. Drawup is recorded with a negative sign
"z1, m" text box	Vertical distance between center of upper screen of tested well and center of observation well screen
"z2, m" text box	Fields show calculated vertical distance between center of lower screen of tested well and center of observation well screen
"z, m" text box	The vertical distance between the centers of the two screens of tested well
"lw, m" text box	Lenght of tested well screen. Length screens are the same
"kx, m/day" text box	Horizontal hydraulic conductivity of aquifer
"kz, m/day" text box	Vertical hydraulic conductivity of aquifer
"r, m" text box	Horizontal distance from tested well to observation well
"rw, m" text box	Tested well radius

Steady-state equation for tested well:

Steady-state equation for observation well:

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