Time at which drawdown is caused by real well at observation well Calculator

✖Distance from Observation Well to Real Well is the hydraulic distance to boundaries from the analysis of aquifer-test data.ⓘ Distance from Observation Well to Real Well [r_r]			+10% -10%
✖Time of Drawdown caused by Image Well at the observation well.ⓘ Time of Drawdown caused by Image Well [t_i]			+10% -10%
✖Distance from Observation Well to Image Well is the hydraulic distance to boundaries from the analysis of aquifer-test data.ⓘ Distance from Observation Well to Image Well [r_i]			+10% -10%

✖Time of Drawdown caused by Real Well at the observation well.ⓘ Time at which drawdown is caused by real well at observation well [t_r]

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Formula

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Time at which drawdown is caused by real well at observation well

Formula

`"t"_{"r"} = "r"_{"r"}^2*"t"_{"i"}/"r"_{"i"}^2`

Example

`"150.2222min"=("26m")^2*"200min"/("30m")^2`

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Time at which drawdown is caused by real well at observation well Solution

STEP 0: Pre-Calculation Summary

Formula Used

Time of Drawdown caused by Real Well = Distance from Observation Well to Real Well^2*Time of Drawdown caused by Image Well/Distance from Observation Well to Image Well^2
t_r = r_r^2*t_i/r_i^2
This formula uses 4 Variables

Variables Used

Time of Drawdown caused by Real Well - (Measured in Second) - Time of Drawdown caused by Real Well at the observation well.
Distance from Observation Well to Real Well - (Measured in Meter) - Distance from Observation Well to Real Well is the hydraulic distance to boundaries from the analysis of aquifer-test data.
Time of Drawdown caused by Image Well - (Measured in Second) - Time of Drawdown caused by Image Well at the observation well.
Distance from Observation Well to Image Well - (Measured in Meter) - Distance from Observation Well to Image Well is the hydraulic distance to boundaries from the analysis of aquifer-test data.

STEP 1: Convert Input(s) to Base Unit

Distance from Observation Well to Real Well: 26 Meter --> 26 Meter No Conversion Required
Time of Drawdown caused by Image Well: 200 Minute --> 12000 Second (Check conversion here)
Distance from Observation Well to Image Well: 30 Meter --> 30 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

t_r = r_r^2*t_i/r_i^2 --> 26^2*12000/30^2

Evaluating ... ...

t_r = 9013.33333333333

STEP 3: Convert Result to Output's Unit

9013.33333333333 Second -->150.222222222222 Minute (Check conversion here)

FINAL ANSWER

150.222222222222 ≈ 150.2222 Minute <-- Time of Drawdown caused by Real Well

(Calculation completed in 00.004 seconds)

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Created by Mithila Muthamma PA

Coorg Institute of Technology (CIT), Coorg

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< 4 Test Affected by Lateral Boundaries Calculators

Distance from observation well to image well

Go Distance from Observation Well to Image Well = Distance from Observation Well to Real Well*sqrt(Time of Drawdown caused by Image Well/Time of Drawdown caused by Real Well)

Distance from observation well to real well

Go Distance from Observation Well to Real Well = Distance from Observation Well to Image Well*sqrt(Time of Drawdown caused by Real Well/Time of Drawdown caused by Image Well)

Time at which Drawdown is Caused by Image Well at Observation Well

Go Time of Drawdown caused by Image Well = Distance from Observation Well to Image Well^2*Time of Drawdown caused by Real Well/Distance from Observation Well to Real Well^2

Time at which drawdown is caused by real well at observation well

Go Time of Drawdown caused by Real Well = Distance from Observation Well to Real Well^2*Time of Drawdown caused by Image Well/Distance from Observation Well to Image Well^2

Time at which drawdown is caused by real well at observation well Formula

Time of Drawdown caused by Real Well = Distance from Observation Well to Real Well^2*Time of Drawdown caused by Image Well/Distance from Observation Well to Image Well^2
t_r = r_r^2*t_i/r_i^2

What is Image Well Theory?

According to Image Well Theory, the effect of a recharge boundary can be duplicated by assuming that water is injected into the aquifer through a recharging image well at the same rate that water is being withdrawn from the real well .

How to Calculate Time at which drawdown is caused by real well at observation well?

Time at which drawdown is caused by real well at observation well calculator uses Time of Drawdown caused by Real Well = Distance from Observation Well to Real Well^2*Time of Drawdown caused by Image Well/Distance from Observation Well to Image Well^2 to calculate the Time of Drawdown caused by Real Well, The Time at which drawdown is caused by real well at observation well is the hydraulic distance to boundaries can be determined from the analysis of aquifer-test data . According to the Theis equation, if we deal with equal drawdowns caused by the real well and the image well. Time of Drawdown caused by Real Well is denoted by t_r symbol.

How to calculate Time at which drawdown is caused by real well at observation well using this online calculator? To use this online calculator for Time at which drawdown is caused by real well at observation well, enter Distance from Observation Well to Real Well (r_r), Time of Drawdown caused by Image Well (t_i) & Distance from Observation Well to Image Well (r_i) and hit the calculate button. Here is how the Time at which drawdown is caused by real well at observation well calculation can be explained with given input values -> 2.503704 = 26^2*12000/30^2.

FAQ

What is Time at which drawdown is caused by real well at observation well?

The Time at which drawdown is caused by real well at observation well is the hydraulic distance to boundaries can be determined from the analysis of aquifer-test data . According to the Theis equation, if we deal with equal drawdowns caused by the real well and the image well and is represented as t_r = r_r^2*t_i/r_i^2 or Time of Drawdown caused by Real Well = Distance from Observation Well to Real Well^2*Time of Drawdown caused by Image Well/Distance from Observation Well to Image Well^2. Distance from Observation Well to Real Well is the hydraulic distance to boundaries from the analysis of aquifer-test data, Time of Drawdown caused by Image Well at the observation well & Distance from Observation Well to Image Well is the hydraulic distance to boundaries from the analysis of aquifer-test data.

How to calculate Time at which drawdown is caused by real well at observation well?

The Time at which drawdown is caused by real well at observation well is the hydraulic distance to boundaries can be determined from the analysis of aquifer-test data . According to the Theis equation, if we deal with equal drawdowns caused by the real well and the image well is calculated using Time of Drawdown caused by Real Well = Distance from Observation Well to Real Well^2*Time of Drawdown caused by Image Well/Distance from Observation Well to Image Well^2. To calculate Time at which drawdown is caused by real well at observation well, you need Distance from Observation Well to Real Well (r_r), Time of Drawdown caused by Image Well (t_i) & Distance from Observation Well to Image Well (r_i). With our tool, you need to enter the respective value for Distance from Observation Well to Real Well, Time of Drawdown caused by Image Well & Distance from Observation Well to Image Well and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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