Oil prices extended start-of-the-week gains on Tuesday, as optimism grew over reducing a global glut in oil, with weekly U.S. supply data just around the corner. March West Texas Intermediate crude CLH8, +0.47% rose 47 cents, or 0.7%, to $64.03 a barrel. Brent for March LCOH8, +0.45% climbed 42 cents, or 0.6%, to $69.45 a barrel. Oil prices rose Monday after Saudi Arabia’s energy minister Khalid al-Falih told reporters that the Organization of the Petroleum Exporting Countries and a group of non-cartel members led by Russia could extend their production cuts beyond 2018. An update on U.S. supply, a festering worry for the market, is coming up Wednesday, when the Energy Information Administration releases official data. Analysts surveyed by S&P Global Platts are forecasting a drop of 1.6 million barrels in U.S. crude. Last week, the EIA reported that domestic crude supplies fell 6.9 million barrels for the week ended January 12. Among other energy contracts, February gasoline RBG8, +0.39% climbed 0.7% to $1.89 a gallon, while February heating oil HOG8, +0.36% rose 0.5% to $2.067 a gallon. February Natural gas NGG18, +1.77% added 1% to $3.258 per million British thermal units.via