OPEC is gearing up to deepen production cuts later this week but still needs to agree with allies such as Russia over details of a deal to support oil prices and head off a looming oil glut next year. The Organization of the Petroleum Exporting Countries (OPEC) meets on Thursday in Vienna followed by a meeting with Russia and others, a grouping known as OPEC+, on Friday. OPEC+ has been curbing output since 2017 to counter oversupply as a result of booming output in the United States, which has become the world’s biggest producer and is not taking part in cuts. Next year, rising production in non-OPEC countries such as Brazil and Norway […]