Oilfield Calculator This Calculator covers many branches of petroleum engineering: 1- Well Control 2- Well Testing a. Oil & Gas Calculations b. Oil SG & API c. Solution GOR d. Oil & Gas Rate e. Orifice size Finder 3- Unit Conversions 4- API Flange Ruler 5- Reservoir Engineering a. Original Oil in Place b. Gas Initially in Place c. Gas Formation Volume Factor d. Permeability f. Porosity of a Core Sample g. Drive Indices 6- Production engineering a. Nodal Analysis b. Flow Regimes c. Sucker Rod Pumping d. Matrix Acidizing e. Hydraulic Fracture f. Estimated BHP 7- EOR a. Nitrogen MMP b. Capillary Pressure. Make the form portrait. Picture can be resized to fit in portrait. 8- Tank Volume