Petroleum engineering workflow guides
Each guide combines source-verified context, a worked calculation, method-selection advice, failure checks, and linked calculators. Use the article to frame the engineering question, then run the calculator with your own documented inputs.
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.
How to Calculate Plateau Pressure for Water Influx
Learn how to calculate plateau pressure from reservoir pressure history and use pressure-step increments in van Everdingen-Hurst water influx calculations.