Forget Doha, oil oversupply gone this year: Hamm By: CNBC.com News April 18, 2016 at 17:01 PM EDT As oil producers failed to strike a deal in Doha, Qatar, this weekend, industry expert Harold Hamm weighs in on the future of oil. Read More >> Related Stocks: Continental Resources Energy Select Sector SPDR US Brent Oil United States Oil Fund