Drilling
Drilling-engineering calculators for the rig floor — mud weight & hydrostatics, pump output & circulation, hole & pipe volumes, the well-control kill sheet, drillstring mechanics, directional survey, bit hydraulics and surge/swab.
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- Mud Weight & HydrostaticsDrilling-fluid pressure maths — hydrostatic pressure, pressure gradient, equivalent mud weight (EMW),…
- Pump Output & CirculationMud-pump output and circulation maths — triplex and duplex output per stroke and flow rate, annular velocity,…
- Hole & Pipe VolumeHole, pipe and annular capacity and volume, open- and closed-end pipe displacement, and slug calculations.…
- Well Control Kill SheetWell-control kill-sheet maths — kill mud weight, formation pressure, initial and final circulating pressures,…
- Drillstring MechanicsDrillstring load maths — buoyancy factor and buoyed weight, margin of overpull, drill-collar weight for…
- Directional SurveyDirectional-survey maths — dogleg severity by the minimum-curvature method, the TVD/north/east step between…
- Bit HydraulicsBit-hydraulics maths — total flow area from nozzle sizes, nozzle velocity, bit pressure drop, hydraulic…
- Surge, Swab & TrippingTripping maths — hole-fill per stand, a simplified surge/swab pressure estimate, trip margin, and usable…