Drilling EngineeringWell Control
New MAASP After Kill Mud Weight Formula
New MAASP After Kill Mud Weight calculates new maasp after kill for well control workflows in drilling engineering.
How engineers use this formula
Use this formula when the listed inputs (MW_max, KMW, TVD_shoe) are known and the assumptions behind the cited well control relationship match the engineering case being checked.
Assumptions
- Input values are representative for the well, reservoir, fluid, or equipment case being evaluated.
- The declared units match the field-unit constants used in the formula.
- The cited formula applies to the selected petroleum engineering workflow.
Limitations
- The calculation does not replace a full engineering model or operating procedure.
- Accuracy depends on the source correlation, assumptions, input quality, and unit consistency.
Common mistakes
- Mixing unit systems without converting the inputs.
- Using default example values as field recommendations.
- Applying the formula outside the source assumptions.
Default example
Using the default inputs, MAASP_kill equals 780 psi.
MW_maxppg
16
KMWppg
13
TVD_shoeft
5000
Inputs
MW_max
ppgMaximum Allowable Mud Weight
KMW
ppgKill Mud Weight
TVD_shoe
ftCasing Shoe True Vertical Depth
Outputs
MAASP_kill
psi
New MAASP After Kill
MW_max
ppg
Maximum Allowable Mud Weight
KMW
ppg
Kill Mud Weight
TVD_shoe
ft
Casing Shoe True Vertical Depth
Source and review
reviewedIADC WellSharp Formula Sheet, field units, formula 24.
Source