Kick Tolerance Bottomhole Gas Volume Formula
Kick Tolerance Bottomhole Gas Volume calculates kick tolerance bottomhole gas volume for well control workflows in drilling engineering.
How engineers use this formula
Use this formula when the listed inputs (FP_EMW, MW, LOT_EMW, TVD_shoe, TVD_bit, G_i, L_BHA, AC_BHA, AC_DP) 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, KT equals 84.524825 bbl.
12.5
12.0
14.7
5500
9500
0.11
850
0.1047
0.1215
Inputs
FP_EMW
ppgMaximum Anticipated Formation Pressure Equivalent Mud Weight
MW
ppgPlanned Mud Weight
LOT_EMW
ppgLeak-Off Test Equivalent Mud Weight at Shoe
TVD_shoe
ftCasing Shoe True Vertical Depth
TVD_bit
ftBit True Vertical Depth
G_i
psi/ftInflux Gradient
L_BHA
ftBHA Length Exposed to Influx
AC_BHA
bbl/ftAnnular Capacity Around BHA
AC_DP
bbl/ftAnnular Capacity Around Drill Pipe
Outputs
KT
Kick Tolerance Bottomhole Gas Volume
MASICP
Maximum Allowable Shut-In Casing Pressure
SIDPP_kick
Kick-Intensity Pressure at Bit TVD
H_k
Maximum Influx Height
V_initial
Initial Shut-In Influx Volume at Bottom
V_bottom_from_shoe
Bottomhole Equivalent Volume from Shoe Limit
Source and review
reviewedDrillingFormulas.com kick tolerance calculation and Drillers.com kick tolerance tutorial.
Source