"The deal was signed but a lot of details have yet to be agreed. They have a care-taker government at the moment," Barzani said, referring to the cabinet in Baghdad.

Last year, Erbil and Baghdad agreed an early deal that most of the oil produced in Kurdistan would be transferred to national state company SOMO in exchange for budget funds.

But the exact budget allocation has yet to be agreed and the two sides also need to decide how to service Kurdistan's debt in which oil was used as collateral. At the moment, KRG's exports stand at around 400,000-500,000 barrels per day.

(Reporting by Dmitry Zhdannikov; Editing by Alexander Smith)