Page 178 - Formulas and Calculations for Petroleum Engineering

Drilling engineering formulas and calculations Chapter 2 171

2.232 Volumes and strokes—Annular volume

Input(s)
Dh: Drill Hole Diameter (in.)
Dp: Drillpipe Outer Diameter (in.)

Output(s)

B: Annular Volume (bbl)

Formula(s)

2
Dh Dp 2
B ¼
1029:4

Reference: Lapeyrouse, N. J., 2002, Formulas and Calculations for Drilling, Production and Workover, Second Edition,
Gulf Professional Publishing, Page: 39.

2.233 Volumes and strokes—Drill string volume

Input(s)
ID: Internal Diameter (in.)
PL: Pipe Length (ft)

Output(s)
B: Drill String Volume (bbl)

Formula(s)

!
2
ð IDÞ
B ¼ PL
1029:4
Reference: Lapeyrouse, N. J., 2002, Formulas and Calculations for Drilling, Production and Workover, second edition,
Gulf Professional Publishing, Page: 31.

2.234 Volumes and strokes—Total strokes
Input(s)

V DS : drill String Volume (bbl)
V AV : Annular Volume (bbl)
O: Pump Output (bbl/stroke)

Output(s)

S: Total Strokes (Surface to Bit+Bit to Surface) (No)