Thrace-Samsun

Commentary

The basin is relatively underexplored, with tight-gas and offshore Black Sea potential, and TPAO's Sakarya success supports interest. A stable, well-managed upstream regime adds to its appeal. Outlook: Positive.

Updated

October 12, 2026

Location

Description

The Thrace-Samsun province comprises two separate basins either side of the Bosphorus: the Thrace Basin to the west and the Samsun area of the central Black Sea coast to the east. The Thrace Basin is a triangular Cenozoic basin in NW Turkey, interpreted as a supradetachment basin formed on the exhumed and extended Rhodope metamorphic complex and later modified by Neogene strike-slip faulting; it contains up to c.9,000m of Eocene to Holocene sediments in the basin centre. Shales of the Eocene Hamitabat Formation are the principal petroleum source rocks, with a minor contribution from the Oligocene Mezardere Formation, and gas is produced mainly from Eocene–Oligocene reservoirs, including Hamitabat turbidite sandstones and Soğucak reefal limestones. The Samsun basin comprises Liassic to Quaternary sediments overlying metamorphic basement in the Middle Black Sea Region.

Summary

The basin has been sparsely explored, but recent activity has resulted in an uptick in prospectivity. There remains significant potential, especially in the shale series, where drilling and completion methods are seen as being key to success.