Investing.com - The IEA estimated OPEC compliance with agreed output cuts at 98% in first two months of the year.
The International Energy Agency estimated Saudi compliance with the cuts in the two months at 135%.
In its monthly report Wednesday, the IEA said there is less "data visibility" regarding non-OPEC output.
It estimated that Russia and other non-OPEC producers' adherence to agreed cuts in the period at 37%.
OPEC members agreed to cut production by 1.2 mn b/d in the first six months of this year.
Non-OPEC producers led by Russia have agreed to cut by 558,000 b/d.
The IEA sees an implied market deficit of 500,000 b/d in H1 if current output levels maintained to June.
However, the Paris-based agency pointed out that global inventories remain high.
Investors looking for market re-balancing "should be patient," it said.