U.S. oil prices extended gains on Tuesday in post-Christmas trading, as OPEC and non-OPEC members are set to start curbing output in less than a week to support oil prices. NYMEX crude for February delivery CLc1 was up 16 cents at $53.18 a barrel by 0002 GMT, after closing up 7 cents at a 17-month high on Friday. London Brent crude for February delivery LCOc1 was yet to trade after settling up 11 cents at $55.16 a barrel on Friday. Oil markets were closed on Monday after Christmas holiday. Oil has been supported in the past several weeks as the Organization of Petroleum Exporting Countries and non-OPEC members have agreed to lower output by almost 1.8 million barrels per day (bpd) from Jan. 1. Libya’s oil production rose slightly […]