Page 160 - Formulas and Calculations for Petroleum Engineering

Drilling engineering formulas and calculations Chapter 2 153

Formula(s)

ROL ¼ PPRL MPRL

Reference: Boyun, G., William, C., & Ali Ghalambor, G. (2007). Petroleum Production Engineering:A Computer-Assisted
Approach, Page: 18.

2.189 Rate of fuel consumption by a pump

Input(s)
N: Pump Rotary Speed (rpm)
T: Output Torque (ft lbs)
n: Pump Efficiency (%)
H: Fuel Heating Value (BTU/lb)

Output(s)
Q f : Fuel Consumption Rate (lbm/h)

Formula(s)

N T
Q ¼ 48:46
f
n H
Reference: Samuel. E Robello. 501 Solved Problems and Calculations for Drilling Operations. Sigma Quadrant. 2015.
Houston, Texas, Page: 6.

2.190 Rate of gas portion that enters the mud

Input(s)
q r : Rock Removal Rate (SCF/min)
S g : Gas Saturation (fraction)
Ø: Formation Porosity (per cent)

Output(s)

q g : The Rate of Gas Portion that enters the Mud with Bulk Rock (SCF/min)

Formula(s)

q ¼ q ØS
g r g

Reference: Watson, D., Brittenham, T., & Moore, P. L. (2003). Advanced Well Control (Vol. 10). Society of Petroleum
Engineers, Page: 19.

2.191 Relationship between traveling block speed and fast line speed

Input(s)
v f : Fast Line Speed (fpm)
n: Number of Lines Strung B/w Crown and Traveling Block (unitless)