Annular Velocity Calculator

Formula

To calculate the Annular Velocity (AV):

\[ AV = PO \cdot AC \]

Where:

\(AV\) is the Annular Velocity in feet per minute (ft/min)
\(PO\) is the Pump Output in barrels per minute (bbl/min)
\(AC\) is the Annular Capacity in barrels per foot (bbl/ft)

What is Annular Velocity?

Annular velocity measures the linear rate of fluid (typically oil) moving through an annular drilling setup. It is a critical parameter in drilling operations to ensure efficient and safe fluid circulation.

Example Calculation 1

Let's assume the following values:

Pump Output (\(PO\)) = 5 bbl/min
Annular Capacity (\(AC\)) = 0.1 bbl/ft

Using the formula:

\[ AV = 5 \cdot 0.1 = 0.5 \text{ ft/min} \]

The Annular Velocity is 0.5 ft/min.

Example Calculation 2

Let's assume the following values:

Pump Output (\(PO\)) = 10 bbl/min
Annular Capacity (\(AC\)) = 0.2 bbl/ft

Using the formula:

\[ AV = 10 \cdot 0.2 = 2 \text{ ft/min} \]

The Annular Velocity is 2 ft/min.