Adds details from presentation, background Sept 8 (Reuters) - Shale oil producer EOG Resources EOG.N on Thursday said U.S. production gains next year will slow amid persistent supply chain constraints and inflationary pressures, echoing a rival's sentiment. But in remarks at the Barclays CEO Energy and Power conference on Thursday, EOG's top executive predicted that next year's gains likely would trend lower. "Our internal models count on the lower end" of that same range for 2023, said Chief Executive Officer Ezra Yacob, referencing volume growth.