Source-verified workflow guide
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.
5
linked formula references
2
verified source links
Practical workflow
- 1
Use Darcy or radial-flow equations when the flow geometry, fluid properties, and pressure boundary assumptions match the case.
- 2
Use productivity index for quick linear inflow checks where rate is proportional to drawdown.
- 3
Use Vogel IPR for oil-well two-phase inflow screening when the solution-gas-drive assumptions are reasonable.
- 4
Use material-balance calculators as consistency checks against production, pressure, PVT, and aquifer assumptions.
Start with these calculators
These links keep the guide close to the working calculator flow.