Naft Shahr Kurdish نفت شاه Persian نفت شهر also known as Naft Shah Naft Shāh Naft e Shah Naft e Shāh Naft i Shah Naft ī Shah is a district of Qasr e Shirin County in Kermanshah Province of Iran It is a sub district of Sumar District It is known for its oilfields English explorers found oil in Naft Shahr for the first time in 1931