Page 111 - Formulas and Calculations for Petroleum Engineering

104 Formulas and calculations for petroleum engineering

Formula(s)

0:5

T ¼ W D L +DÞ +D W
ð
c p cs b
5280 2000
Reference: Lapeyrouse, N. J., 2002, Formulas and Calculations for Drilling, Production and Workover, Second Edition,
Gulf Professional Publishing, Page: 47.

2.68 Duplex pump factor

Input(s)

D L : Piston Diameter (in.)
D r : Rod Diameter (in.)
L S : Stroke Length (in.)

Output(s)

PF d : Duplex Pump Factor (bbl/stroke)

Formula(s)

2 2
3:1415 L 2 D L D r
S
PF ¼
d
2 9702
Reference: Samuel. E Robello. 501 Solved Problems and Calculations for Drilling Operations. Sigma Quadrant. 2015.
Houston, Texas, Page: 84.

2.69 Duplex pump output—Using liner diameter
Input(s)

d I : Liner Diameter (in.)
l s : Stroke Length (in.)

Output(s)
q o : Pump Output (bbl/stroke)

Formula(s)

2
q ¼ 0:000324 d l ðÞ
l
s
o
Reference: Lapeyrouse, N. J., 2002, Formulas and Calculations for Drilling, Production and Workover, Second Edition,
Gulf Professional Publishing, Page: 8.
2.70 Duplex pump output—Using rod diameter

Input(s)
d r : Rod Diameter (in.)
l s : Stroke Length (in.)