A pact by leading producers to cut output could quickly begin sopping up the glut on the oil market that has weighed on prices, the IEA said Tuesday as it also hiked its demand forecast.

The agreements, if implemented, would "hasten the market's return to balance by working off the inventory overhang," said the International Energy Agency, which analyses energy markets for major oil consuming nations.

The recent deals are the first joint cuts by OPEC and non-OPEC nations since 2001 and aim to reduce production by just under 1.8 million barrels per day (mbd).

"If OPEC and non-OPEC were to implement strictly their agreed cuts, global inventories could start to draw in the first half of next year," it added.

The IEA said it was not making any forecast, but suggested that implementation of the pact could result in a draw of 0.6 mbd into stocks.

Oil stocks in the advanced nations which fund the IEA hit a record of 3,102 mb in July. 

While they have since declined, "they remain 300 mb above the five-year average, providing a more than ample cushion going into 2017", said the IEA.