Last week Brent rose 2.8%, while the U.S. benchmark logged a 1.8% gain
For the week, Brent was heading for a gain of about 1.2% and the U.S. benchmark for a 0.8% rise
But OPEC kept its 2023 global demand growth forecast unchanged
Brent crude futures, the global oil benchmark, advanced 0.65 per cent to $86.48 per barrel
Guyana and India in 2021 failed to reach an agreement for direct sales of Guyana's sweet crude to Indian state refiners
It cut its windfall tax on crude to Rs1,900 ($23.28) per tonne from Rs 2,100 per tonne, effective Tuesday
A weaker greenback tends to boost demand for oil, as it makes the commodity cheaper for buyers holding other currencies
Brent crude rose $1.18, or 1.4%, to $83.85 a barrel by 1250 GMT, while U.S. West Texas Intermediate crude gained $1.15, or 1.5%, to $78.56
A weaker dollar can boost demand for oil, as dollar-denominated commodities become cheaper for holders of other currencies
Brent crude was up $1.96, or 2.5%, at $80.53 a barrel by 1450 GMT while U.S. West Texas Intermediate crude rose $2.10, or 2.9%, to $75.87
China, the economy of which has been hit by another Covid wave, also announced more state support measures on Thursday
Still, crude inventories rose more than expected at 1.7 million barrels, compared with analysts' expectations for a 1.2 million-barrel rise
Brent crude was up $1.22, or 1.6%, to $79.06 a barrel at 0922 GMT, while U.S. West Texas Intermediate crude futures gained $1.02, or 1.4%, to $73.86
Brent futures fell $3.70 to $78.40 a barrel, a 2.9 per cent loss. US crude dropped 3.5 per cent, to $73.36 per barrel. Both benchmarks plunged more than 4 per cent
Both benchmarks also plunged more than 4% on Tuesday, with Brent posting its biggest daily decline in more than three months
Brent futures fell $1.88 to $80.22 a barrel, a 2.3% loss, by 1032 GMT. U.S. crude dropped $1.68, or 2.2%, to $75.25 per barrel
The central Board of indirect taxes and Customs has raised windfall tax on petroleum, crude, and aviation turbine fuel effective from January 3
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It raised windfall tax on crude oil to Rs 2,100 ($25.38) per tonne from Rs 1,700 ($20.55), effective Tuesday, the order said