PetroCalcHubFree
Drilling EngineeringDrilling Hydraulics

Bit-to-Surface Lag Time from Annular Volume

tlag=VAVPOSPMt_{lag}=\frac{V_{AV}}{PO\cdot SPM}

Tabular solver

Run the same equation across multiple cases and compare results in one table.

CaseV_AVbblPObbl/stkSPMstrokes/minResultAction
1Pending
2Pending
3Pending