Oilfield Calc Toolbox

Oilfield Calc Toolbox brings practical oilfield calculations into a simple mobile reference for field crews. CAPACITY AND DISPLACEMENT Calculate pipe capacity, steel displacement, annular volume and total wellbore capacity. Work with multiple contiguous outer-string sections and see the volume for each interval. COILED TUBING AND CIRCULATION Enter coil size and capacity, the surrounding pipe sections, and separate pump and return rates. See surface-to-tool, bottoms-up and surface-to-surface times, plus annular velocity for each return section. Add a sweep start time to estimate its return to surface. Use the optional liquid-plus-nitrogen rate estimate for a stated pressure condition. This is a simplified single-condition estimate, not a full multiphase-flow simulation. MORE FIELD CALCULATORS Find pressure, workover, unit-conversion and drilling-support calculations in one place. Units stay beside the inputs and results, and supported results show the formula with your entered numbers. QUICK REFERENCE No well name, job profile or personal app account is required. Calculations run locally after installation. Internet access is needed for purchases, restoring purchases and sending a problem report. FREE AND PRO A selection of calculators is available at no charge. An optional one-time Lifetime Pro purchase unlocks the Pro calculators. There is no subscription. IMPORTANT This app is a calculation and reference aid. It does not replace approved drilling, completion, well-control, coiled-tubing, equipment-manufacturer or company procedures. Check inputs, units, assumptions, equipment limits and results with the responsible qualified person before acting. Nominal pipe-body values are not connection ratings or an assessment of worn equipment. SUPPORT Report a problem from inside the app or contact [email protected].