Oil prices jumped on Monday after the energy ministers of top producers Saudi Arabia and Russia jointly said that an OPEC-led crude production cut would be extended from the middle of this year until March 2018.
Brent crude was at $51.66 per barrel at 0410 GMT, up 82 cents, or 1.6 percent, from its last close.
US West Texas Intermediate (WTI) crude was at $48.67 per barrel, up 82 cents, or 1.7 per cent.
Saudi Energy Minister Khalid al-Falih and his Russian counterpart Alexander said on Monday in Beijing that a joint deal to cut crude supplies to prop up prices would be