Enter the total change in well drawdown and the total well drawdown into the Well Efficiency Calculator. The calculator will evaluate the Well Efficiency.

## Well Efficiency Formula

The following two example problems outline the steps and information needed to calculate the Well Efficiency.

WE = dWD / TWD * 100

Variables:

• WE is the Well Efficiency (%)
• dWD is the total change in well drawdown
• TWD is the total well drawdown

## How to Calculate Well Efficiency?

The following steps outline how to calculate the Well Efficiency.

1. First, determine the total change in well drawdown.
2. Next, determine the total well drawdown.
3. Next, gather the formula from above = WE = dWD / TWD * 100.
4. Finally, calculate the Well Efficiency.
5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem :

Use the following variables as an example problem to test your knowledge.

total change in well drawdown = 3

total well drawdown = 10

WE = dWD / TWD * 100 = ?