[Tekhne]

2,500,000,000 barrels / 150,000 barrels per day / 365.25 days per year = 45.6308464522 years

[jpdbaugh]

This is correct. It would definitely take years. Think about that there is only one hole in this well. It is much smaller than wells in places like Texas and Middle East which are drilled via many holes for a few years.