Casing Pressure Increase Rate from Gas Migration Calculator
Enter the declared drilling engineering inputs below to solve P_inc_rate. Variable definitions, units, the default calculation, and the available source trail are included on this page.
What is available in this record
This record provides the functioning calculator, formula, declared variables and units, a reproducible default result, and the available citation metadata. A separately written engineering interpretation has not yet been published for this calculation.
Formula, variables, and default calculation
Reproducible default result
With the default values shown below, the calculation returns P_inc_rate = 400.4 psi/hr. Defaults demonstrate the implementation; they are not recommended field values.
616
0.65
Input definitions
RGM
ft/hrGas Migration Rate
MWG
psi/ftMud Pressure Gradient
Output definitions
P_inc_rate
Casing Pressure Increase Rate
RGM
Gas Migration Rate
MWG
Mud Pressure Gradient
Source and record status
Source metadata identifies the relationship implemented by the calculator. Check the cited edition, unit basis, and scope against the engineering case before operational use.
DrillingFormulas.com actual gas migration rate relationship rearranged for pressure-increase rate.
Open source reference