Barrel calculator, calculates the total number of barrels to pump out of various sized production tanks. It works with either oil or water. It supports any sized production tank. Barrels per feet and barrels per inch are supplied via user input by entering tank capacity and tank height or by supplying barrels per inch.
Extra features include a pump time estimator. You supply barrels per minute or gallons per minute and a start time. It will estimate a stop time for you.