Oil prices drop for third session as oversupply worries drag ReutersU.S. crude oil tumbles below $50 to 14-month low Seeking AlphaWTI Crude Oil and Natural Gas Forecast December 18, 2018 DailyForexUS crude drops 2.6% to 14-month low, settling at $49.88, on oversupply concerns CNBCU.S. oil prices drop 1 percent on oversupply fears Yahoo FinanceView full coverage on Google News