油价小幅上涨，市场评估供应风险加剧

Group 1 - Oil prices increased slightly as investors assess potential further sanctions by the U.S. on Russia and supply risks from the blockade of Venezuelan oil tankers [1][4] - WTI crude oil futures for January delivery rose by $0.21, or 0.38%, closing at $56.15 per barrel [1][4] - BOK Financial's Dennis Kissler indicated that crude futures are seeking support from the blockade of Venezuelan oil exports, which could lead to production shutdowns if the blockade continues [1][4] Group 2 - Reports suggest that the U.S. is preparing new sanctions on Russia's energy sector if Moscow fails to reach a peace agreement with Ukraine, although no decision has been made by President Trump [1][5] - ING analysts noted that further measures against Russian oil could have a greater supply impact than the blockade of sanctioned tankers entering and leaving Venezuela [5] - The blockade may affect approximately 600,000 barrels per day of Venezuelan oil exports, although around 160,000 barrels per day to the U.S. are expected to continue [5] Group 3 - Venezuelan crude oil accounts for about 1% of global supply [5] - Bank of America analysts predict that lower oil prices will suppress supply, estimating that if the average WTI price is $57 per barrel by 2026, U.S. shale oil production could decrease by 70,000 barrels per day [3][5]