Unconventionals have wrought a massive change in the oil and gas business and in the economy of North America, said Hal Kvisle, president and CEO of Talisman Energy. “We can now look forward to very long-lived supplies of natural gas and crude oil from sources we would not have thought possible a few years ago.”

Kvisle spoke at Hart Energy’s DUG Canada conference and exhibition in Calgary, which Hart co-hosted with the Canadian Society for Unconventional Resources.  

“First and foremost, unconventional resource development is a story of technology and ...