Santos' (ASX:STO) shares inched down 0.3% in recent trading on Tuesday after oil prices fell over $3 per barrel on Monday on signs of de-escalation between the US and Iran.
The shares of Woodside Energy Group (ASX:WDS) inched up 0.2%, and those of Beach Energy (ASX:BPT) climbed 0.5%.
Brent crude futures fell $3.02, or 4.4%, to settle at $66.30 per barrel.
Iran and the U.S. will resume nuclear talks on Friday, Reuters reported Monday.