The full scope covers subsurface equipment to onshore production, including completions, subsea production systems, subsea umbilicals, risers and flowlines and an early production facility (EPF).
Schlumberger will manage the well completions scope, along with design, construction, and commissioning of the EPF to handle up to 350 MMcf/d of gas.
Subsea 7’s EPCI responsibilities cover the subsea pipelines and associated equipment to connect the wells, in around 2,000 m (6,562 ft) water depth, to the EPF.
It will also supply and install the infield flowlines, control umbilicals, tie-in connections, associated subsea equipment, the 170 km (105.6 mi) of gas export pipeline and the monoethylene glycol injection pipeline to the EPF.
Project management and engineering has started from the Subsea 7 office in Istanbul.
Olivier Blaringhem, CEO of Subsea Integration Alliance, said: “This combined offering provides our customer with a truly integrated solution for field development.
“A strong, collaborative early engagement process led by Turkish Petroleum has enabled an industry-leading timeline from discovery to first gas for a project of this scale and complexity.”
TPAO discovered Sakarya last year, 100 nautical miles off the Turkish coast, using the drillship Fatih. The company estimated the potential resources at the time at 405 bcm of lean gas.