REToolkit is a general purpose Reservoir Engineering Toolkit containing numerous small analytical routines. These include the following :

1. Conversion Utilities ; Units conversion, API to SG and bbl/tonne, Watercut and WOR, Recovery factors, Densities and Pressure Gradients, Equivalent Area, Radius and Length.

2. PVT Calculations; numerous PVT calculations and correlations for gas, oil and water. Minimum miscibility pressure and dewpoint pressure prediction.

3. Waterdrive Calculations; Mobility ratio, Areal sweep efficiency, Waterdrive and depletion recovery factor estimates.

4. Gas Calculations; Gas BHP calculation from THP.

5. Decline curve exponent calculation.

6. Vertical and horizontal oil well PI calculation.