Crude futures inched up on Wednesday, with investors waiting for talks between OPEC producers and other oil exporters on curbing output to end a glut in the global market.
Brent crude was up 9 cents at $52.50 a barrel at 0012 GMT. It fell 73 cents, or 1.4 per cent, to close at $52.41 a barrel on Tuesday, retreating from a one-year high of $53.
73 hit on Monday.
US West Texas Intermediate (WTI) crude had gained 3 cents to $50.82 a barrel. It dropped 56 cents, or 1 per cent, to settle the previous session at $50.79.