The state-run utility made a profit of QAR417 million ($115 million) in the three months to June 30 compared to QAR436 million in the prior-year period.
The firm had filed an arbitration case in London last October against the Kurdistan Regional Government (KRG), to obtain payments for products which it had delivered.
Any setback to the government in Southern Iraq could lead to greater demand for the more liquid currencies like the yen, the dollar and the Swiss franc.