Basrah Heavy and Basrah Medium crude posted weekly declines of 2.56% and 2.49%, respectively, losing $1.42 per barrel over the five-day trading period.
The losses occurred despite a rebound in the final session, highlighting the continued pressure on Iraqi export grades relative to broader market movements.
90% to $53.70 per barrel, diverging from gains in global benchmark futures.
The weekly drop extends a period of volatility for Iraq's flagship crude.
Basrah Heavy had previously fallen sharply, dropping $2.75 to settle at $47.73 per barrel in earlier trading, a 5.45% decline that mirrored a broader retreat across global energy benchmarks.
Subsequently, the grade fell another 0.90% to $53.70 per barrel, diverging from gains in global benchmark futures.
This divergence underscores the persistent discount facing Iraqi exports.