Oil Down Again On OPEC Surplus Warnings As Analysts Disagree On Market Outlook 25 November 2021 But lack of investment seems to ensure tight supplies in the near-term, says Vitol.Author: Capt. Johnhttps://shipandbunker.com/news/world/883888-oil-down-again-on-opec-surplus-warnings-as-analysts-disagree-on-market-outlook