Well Annular Capacity Between Casing or Hole and Pipes

Annular capacity volume can be defined as the volume contained between the outside of the pipe and the open hole (Fig. 1) or between the outside of the drill pipe or tubing and the inside of the casing.

Calculating annular capacity is essential in drilling operations.

Reference: www.drillingformulas.com

Correlations

  • Annular Capacity

Input Parameters

NameInput Value - UnitConverted ValueValidityLink to Calculation Page
Hole Size

12.25

in

Number of Different Pipe Sizes

1

1st Pipe Outer Diameter (OD)

5

in

2nd Pipe Outer Diameter (OD)

2.375

in

3rd Pipe Outer Diameter (OD)

1

in

CALCULATE

Results

CorrelationCalculated ValueWarningsRemarks
Annular Capacity0.12149bbl/ft