Page 151 - Formulas and Calculations for Petroleum Engineering

144 Formulas and calculations for petroleum engineering

Output(s)

R: Penetration Rate (ft/h)

Formula(s)

a W
W
R ¼ K N a N
d
b
Reference: Watson, D., Brittenham, T., & Moore, P. L. (2003). Advanced Well Control (Vol. 10). Society of Petroleum
Engineers, Page: 48.

2.165 Percentage of bit nozzle pressure loss

Input(s)

P b : Jet Pressure Nozzle (psi)
P: Surface Pressure (psi)

Output(s)
%cb: Percent Pressure Loss (fraction)

Formula(s)

P b
%cb ¼ 100
P

Reference: Lapeyrouse, N. J., 2002, Formulas and Calculations for Drilling, Production and Workover, Second Edition,
Gulf Professional Publishing, Page: 165.

2.166 Plastic viscosity—Bingham plastic model

Input(s)

y 600 : Fann Dial Reading at 600 Rpm (cP)
y 300 : Fann Dial Reading at 300 Rpm (cP)

Output(s)
PV: Plastic Viscosity (cP)

Formula(s)

ð ð Þ
PV ¼ y 600 Þ y 300
Reference: Samuel. E Robello. 501 Solved Problems and Calculations for Drilling Operations. Sigma Quadrant. 2015.
Houston, Texas, Page: 192.