Given that a well has declined from 100 Stb/day to 96 Stb/day during a month period. Using the exponential decline method what will be the value of oil produced in the first year if the price of crude is $61 per barrel and it remained unchanged throughout the year. Project the yearly production for the next 5 years. Also predict the year for which the well will not be economic at a production rate of 17 Stb/day.