Well Loss given Drawdown Calculator

✖The Total Drawdown in Well is defined as the reduction in hydraulic head observed at a well in an aquifer, typically due to pumping a well as part of an aquifer test or well test.ⓘ Total Drawdown in Well [s_t]			+10% -10%
✖Aquifer loss is product of discharge and aquifer loss coefficient.ⓘ Aquifer loss [BQ]			+10% -10%

✖The Head Loss in well is essentially the difference between the head of the aquifer immediately outside and in the well a head inside because of all these losses.ⓘ Well Loss given Drawdown [CQⁿ]

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Formula

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Well Loss given Drawdown

Formula

`"CQ"^{"n"} = "s"_{"t"}-"BQ"`

Example

`"-26.3m"="0.83m"-"27.13m"`

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Well Loss given Drawdown Solution

STEP 0: Pre-Calculation Summary

Formula Used

Head Loss in well = Total Drawdown in Well-Aquifer loss
CQⁿ = s_t-BQ
This formula uses 3 Variables

Variables Used

Head Loss in well - (Measured in Meter) - The Head Loss in well is essentially the difference between the head of the aquifer immediately outside and in the well a head inside because of all these losses.
Total Drawdown in Well - (Measured in Meter) - The Total Drawdown in Well is defined as the reduction in hydraulic head observed at a well in an aquifer, typically due to pumping a well as part of an aquifer test or well test.
Aquifer loss - (Measured in Meter) - Aquifer loss is product of discharge and aquifer loss coefficient.

STEP 1: Convert Input(s) to Base Unit

Total Drawdown in Well: 0.83 Meter --> 0.83 Meter No Conversion Required
Aquifer loss: 27.13 Meter --> 27.13 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

CQⁿ = s_t-BQ --> 0.83-27.13

Evaluating ... ...

CQⁿ = -26.3

STEP 3: Convert Result to Output's Unit

-26.3 Meter --> No Conversion Required

FINAL ANSWER

-26.3 Meter <-- Head Loss in well

(Calculation completed in 00.004 seconds)

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Created by Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

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Verified by Ishita Goyal

Meerut Institute of Engineering and Technology (MIET), Meerut

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< 2 Well Loss Calculators

Well Loss given Specific Capacity

Go Head Loss in well = (Discharge/Specific Capacity)-Aquifer loss

Well Loss given Drawdown

Go Head Loss in well = Total Drawdown in Well-Aquifer loss

Well Loss given Drawdown Formula

Head Loss in well = Total Drawdown in Well-Aquifer loss
CQⁿ = s_t-BQ

What is Well Loss?

When water is pumped out of a well, the total drawdown caused includes not only that of the logarithmic drawdown curve at the well face, but also drawdown caused by flow through well screen and axial movement within the well. The latter drawdown is called well loss.

How to Calculate Well Loss given Drawdown?

Well Loss given Drawdown calculator uses Head Loss in well = Total Drawdown in Well-Aquifer loss to calculate the Head Loss in well, The Well Loss given Drawdown is defined as the value of well loss when we have prior information of other parameters used. Head Loss in well is denoted by CQⁿ symbol.

How to calculate Well Loss given Drawdown using this online calculator? To use this online calculator for Well Loss given Drawdown, enter Total Drawdown in Well (s_t) & Aquifer loss (BQ) and hit the calculate button. Here is how the Well Loss given Drawdown calculation can be explained with given input values -> -27.029 = 0.83-27.13.

FAQ

What is Well Loss given Drawdown?

The Well Loss given Drawdown is defined as the value of well loss when we have prior information of other parameters used and is represented as CQⁿ = s_t-BQ or Head Loss in well = Total Drawdown in Well-Aquifer loss. The Total Drawdown in Well is defined as the reduction in hydraulic head observed at a well in an aquifer, typically due to pumping a well as part of an aquifer test or well test & Aquifer loss is product of discharge and aquifer loss coefficient.

How to calculate Well Loss given Drawdown?

The Well Loss given Drawdown is defined as the value of well loss when we have prior information of other parameters used is calculated using Head Loss in well = Total Drawdown in Well-Aquifer loss. To calculate Well Loss given Drawdown, you need Total Drawdown in Well (s_t) & Aquifer loss (BQ). With our tool, you need to enter the respective value for Total Drawdown in Well & Aquifer loss and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Head Loss in well?

In this formula, Head Loss in well uses Total Drawdown in Well & Aquifer loss. We can use 1 other way(s) to calculate the same, which is/are as follows -

Head Loss in well = (Discharge/Specific Capacity)-Aquifer loss

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