Turkey’s state oil company TPAO has completed a successful flow test on an appraisal well at its $3.6 billion Sakarya gas project in the Black Sea.

Due on stream in 2023, the 15 trillion cubic foot development will be exploited via a 170-kilometre subsea tie-back to shore, with Subsea 7 and Schlumberger among the contractors working on the 2000-metre water depth project.

TPAO said a flow test on the R2 reservoir in the Turkali-1 appraisal well flowed 40.4