The deal was signed by Gholamreza Manouchehri, NIOC deputy managing director for development of engineering, and Shyngys Kulzhamov, director of Berlanga UK, in Tehran on Wednesday.

West Oil and Gas Production Company, one of the Iranian Central Oil Fields Company (ICOFC) subsidiaries operates the field and its oil is delivered to Cheshmeh Khosh operation zone through a pipeline.

NIOC has also signed with Austria's OMV and Thailand's PTTEP similar documents for studying the oilfield.

The Dalpari field is located in Ilam province, southwest of Iran, far from Zagros Mountains, west margin of Dezful Embayment, 210 km northwest of Ahwaz, near Dehluran to Abdanan road.