Virginia-based ICF International says the natural gas production in the Marcellus and Utica shales will continue to grow.



In its second quartyer 2014 Detailed Production Report, ICF says it projects the gas production in the two shales to grow from 25 billion cubic feet per day in 2014 to 34 billion cubic feet per day in 2035, a 36 percent increase.



That's in part because the Utica shale is more gassy than had first been expected.