OSLO, Aug 17 (Reuters) - Norwegian oil company DNO said on Thursday it had last month partly resumed production at its Tawke field in the Iraqi Kurdistan region, delivering oil to the local market at a discount as a key export pipeline remained shut.

DNO swung to an operating loss of $15 million for the second quarter from a year-ago profit of $81 million, as its overall net production dropped to the lowest level in 13 years. (Reporting by Nerijus Adomaitis, editing by Terje Solsvik)