In an era of great uncertainty for gas prices, an absolute stands out for producers and investors: $2 gas is unsustainable, according to Kevin Petak, vice president of gas modeling for ICF International, a consulting firm with headquarters in Fairfax, Va.

In a webinar earlier this month, Petak talked about the historically low gas prices in the United States and how they came about. He also provided near- to long-term outlooks for the natural gas industry.

The ICF webinar addressed factors such as production activity; an unseasonably warm winter; production ...