Page 149 - Formulas and Calculations for Petroleum Engineering

142 Formulas and calculations for petroleum engineering

Formula(s)

L C c
c
N ¼
s
Y
Reference: Lapeyrouse, N. J., 2002, Formulas and Calculations for Drilling, Production and Workover, Second Edition,
Gulf Professional Publishing, Page: 56.

2.160 Open-ended displacement volume of pipe

Input(s)
D o : Outside Diameter of Pipe (in.)
D i : Inside Diameter of Pipe (in.)
L: Length of Pipe (ft)

Output(s)

V o : Open-ended Displacement Volume of Pipe (bbl)

Formula(s)

2 2
0:7854 D D L
i
o
V ¼
o
808:5
Reference: Samuel. E Robello. 501 Solved Problems and Calculations for Drilling Operations. Sigma Quadrant. 2015.
Houston, Texas, Page: 45.

2.161 Overall efficiency—Diesel engines to mud pump

Input(s)
n e : Engine Efficiency (unitless)
n: Electric Motor Efficiency (unitless)
n m : Mud Pump Mechanical Efficiency (unitless)
n v : Mud Pump Volumetric Efficiency (unitless)

Output(s)

n o : Overall Efficiency (unitless)

Formula(s)

n ¼ n n n n
o e l m v
Reference: Samuel. E Robello. 501 Solved Problems and Calculations for Drilling Operations. Sigma Quadrant. 2015.
Houston, Texas, Page: 49.