Page 117 - Formulas and Calculations for Petroleum Engineering

110 Formulas and calculations for petroleum engineering

Formula(s)

P h
EMW ¼
0:052 D cos aðÞ
h
Reference: Samuel. E Robello. 501 Solved Problems and Calculations for Drilling Operations. Sigma Quadrant. 2015.
Houston, Texas, Page: 139.

2.82 Equivalent mud weight—Vertical well
Input(s)

P h : Pressure (psi)
L tvd : True Vertical Depth (ft)

Output(s)

EMW: Equivalent Mud Weight (ppg)

Formula(s)

P h
EMW ¼
ð
0:052 L Þ
tvd
Reference: Samuel. E Robello. 501 Solved Problems and Calculations for Drilling Operations. Sigma Quadrant. 2015.
Houston, Texas, Page: 139.

2.83 Evaluation of centrifuge

Input(s)
MW: Mud Density into centrifuge (ppg)
QM: Mud Volume into centrifuge (gal/min)
PW: Dilution water density (ppg)
QW: Dilution Water volume (gal/min)
PU: Underflow Mud density (ppg)
PO: Overflow Mud Density (ppg)
CC: Clay content in mud (lb/bbl)
CD: Additive content in mud (lb/bbl)

Output(s)
QU: Underflow Mud Vol (gal/min)
FU: Fraction of old mud in underflow (fraction)
QC: Mass rate of Clay (lb/min)
QD: Mass rate of Additive (lb/min)
QP: Water flow rate into mixing pit (gal/min)
QB: Mass rate of API Barite (lb/min)