Turkish oil and gas company Türkiye Petrolleri Anonim Ortaklığı (TPAO) has announced the first gas discovery in Turkish ultra-deep waters following the drilling of the Tuna-1 well in the Sakarya Block in the western Black Sea.
The block is located 175km offshore Ereğli in Turkey and spans across an area of 7,000km².
The Sakarya Block (AR/TPO/KD/C26-C27-D26-D27) is fully owned by TPAO.
TPAO noted that the Tuna-1 was drilled to a total depth of 4,525m. The well had intersected more than 100m of the natural gas-bearing reservoir in the Pliocene and Miocene sands.
The ultra-deepwater exploration well was drilled by the Fatih drillship in a 2,115m water depth.
According to the company, the discovered prospect potentially holds 11 trillion cubic feet (tcf) of gas, which is equivalent to nearly two billion barrels of recoverable oil, based on the detailed data collected from the geophysical studies of the Tuna-1 well.
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TPAO claims that the prospect marks the ‘largest discovery’ in the Turkish Exclusive Economic Zone, as well as in the entire Black Sea.
TPAO chairman and CEO Melih Han Bilgin said: “TPAO will immediately start acquiring 3D seismic in the entire licence and appraise the field extensively to produce first gas by 2023.
“This exploration success confirms the outstanding capabilities of TPAO and hence Turkish geoscientists and engineers in all involved units for generating and evaluating ultra-deepwater prospects, utilising state-of-the-art technology.
“Indeed, there is still an expectation of additional potential at the deeper section of the well, as well as the unexplored surrounding part of the block.”