How productive is the Illinois Basin oil field?
The Illinois Basin is one of the most extensively drilled and mature hydrocarbon basins in the world and has been in production for more than a century. Production declined over the years but is now at a fairly constant level of about 50,000 barrels per day (roughly half of that production is refined by CountryMark). Based on geological evidence and the advent of new technologies, experts believe that recent resource discoveries and new applications are signs that the basin still has much potential.