Petroleum engineering workflow guides
These guides add source-verified context around the calculators without replacing the calculator-first workflow. Use them to choose the right equation group, then run the linked calculators.
Well Control Calculation Workflow
A source-checked well control calculation workflow for hydrostatic pressure, kill mud weight, initial circulating pressure, final circulating pressure, and MAASP checks.
Drilling Hydraulics Formulas
A drilling hydraulics formula guide for ECD, annular pressure loss, annular velocity, pump output, and pressure-window checks.
Reservoir Engineering Formula Guide
A reservoir engineering formula guide for Darcy flow, straight-line productivity index, Vogel IPR, material balance, and original oil in place checks.
Petroleum PVT Calculator Guide
A petroleum PVT calculator guide for gas formation volume factor, oil formation volume factor, real-gas density, API gravity, and reservoir-to-surface volume conversion checks.
Joshi Horizontal Well Productivity Guide
A source-backed guide to the Joshi horizontal well productivity equation, drainage geometry, anisotropy, effective radius, skin, and the limits of steady-state inflow screening.
Shaly Sand Water Saturation Guide
A practical comparison of Indonesian, Archie, and Simandoux water-saturation calculations for resistivity logs, with input checks for shale volume, shale resistivity, porosity, and water resistivity.
Annular Hydraulics and Velocity Guide
A drilling annular hydraulics guide connecting flow rate, annular geometry, average velocity, hole-cleaning limits, pump output, pressure loss, and equivalent circulating density.
Black-Oil PVT Correlation Guide
A black-oil PVT correlation guide for Vasquez-Beggs solution gas-oil ratio, bubble point, formation volume factors, gas properties, and Beggs-Robinson oil viscosity checks.
API RP 14E Erosional Velocity Guide
A careful API RP 14E erosional-velocity workflow covering mixture density, empirical C factor, actual velocity, utilization, pipe sizing, and the equation's documented screening limitations.
Hydraulic Fracture Carter Leakoff Guide
A hydraulic-fracturing leakoff guide for Carter square-root-time fluid loss, spurt loss, exposed area, time basis, fluid balance, fracture efficiency, and model limitations.