I would like to share with you about well control formulas that might be advantageous for you in the future. I seperate into several parts for you to easy to follow.
Before going into all calculations, I would like to emphasize about rounding rules that we will use for well control calculation.
1. Kill Mud Density: We must round up to one decimal place from a calculated kill mud density. For example, if we have the calculated kill mud density of 13.32 ppg, we will round it up to 13.4 ppg.
2. Leak Off Test (LOT): We must round down to one decimal place from a calculated Leak Off Test value. For example if we have the theoretical LOT of 15.57 ppg, we will round down to 15.5 ppg.
When any of the above values have been calculated, the rounded numbers must be used in subsequent calculations.
Well Control Course Equations Part 1
Pressure (P) – psi
Pressure (psi) = Force (lb) / Area in Square Inch (in 2)
Pressure Gradient (G) – psi/ft
Mud Gradient ( Psi/ft ) = Mud weight ( PPG) x 0.052
