OilCalc delivers the quick-calculator stack oil & gas teams rely on every shift. Jump between Drilling, Production, Reservoir, and Terminal/Trading modules to solve pump output, MASP, GOR, tank strapping, CTL/CPL, OOIP, and more in seconds. Each calculator guides inputs with unit selectors and validation, then returns step-by-step formulas, unit conversions, and context summaries for reports or handovers. Save time on well control checks, production optimization, and custody-transfer paperwork while ensuring consistent math across the field.

Feature Highlights

Drilling suite: pump output, annular velocity, mud-weight adjustments, kick tolerance, MASP, displacement
Production toolkit: API/Density/SG, GOR, water cut, flow conversions, tank volumes, shrinkage factors
Reservoir workflows: OOIP, recovery factor, productivity index, Vogel IPR, decline curve analysis
Trading & terminal: CTL/CPL/CTPL, tank strapping, cargo reconciliation, density-at-15°C
Share-ready outputs with formulas, units, and annotated inputs
Dark, field-friendly UI optimized for iPhone and iPad

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