Enter the total annular volume (bbls) and the total flow rate (bbl/min) into the Lag Time Calculator. The calculator will evaluate the Lag Time.
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Lag Time Formula
The following two example problems outline the steps and information needed to calculate the Lag Time.
LT = AV / FR
Variables:
- LT is the Lag Time (min)
- AV is the total annular volume (bbls)
- FR is the total flow rate (bbl/min)
To calculate the lag time, divide the annular volume by the total flow rate.
How to Calculate Lag Time?
The following steps outline how to calculate the Lag Time.
- First, determine the total annular volume (bbls).
- Next, determine the total flow rate (bbl/min).
- Next, gather the formula from above = LT = AV / FR.
- Finally, calculate the Lag Time.
- 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 annular volume (bbls) = 50
total flow rate (bbl/min) = 20
LT = AV / FR = ?
