
U.S. energy firms rise in premarket trading, tracking an increase in crude prices O/R
Brent crude futures LCOc1 up 1.7% at $59.91/barrel; U.S. West Texas Intermediate crude CLc1 rise 1.8% to $56.24/barrel
Prices rose after U.S. President Donald Trump ordered a complete blockade of all sanctioned oil tankers entering and leaving Venezuela, raising global political tensions at a time of concerns over demand
Oil majors Exxon XOM.N and Chevron CVX.N up 0.9% each
ConocoPhillips COP.N up 1.2%, EQT Corp EQT.N rise 1.3% and Occidental Petroleum OXY.N gains 1%
Oilfield services firm Halliburton HAL.N up 0.4%
Refiners Valero Energy VLO.N and Marathon Petroleum MPC.N up 0.4% and 0.5% each