An alliance of Subsea 7 and Schlumberger has confirmed market rumours it has won a turnkey contract worth at least $750 million for subsea work on the huge Sakarya gas project offshore Turkey.

Upstream also understands that a raft of other contractors - including Saipem, Van Oord and Wood - are tipped to be formally awarded key orders for work on the 15 trillion cubic foot deepwater scheme in the Black Sea which is being fast-tracked to first production in 2023

Turkish Petroleum's Sakarya gas project will be developed by subsea wells with gas and small volumes of condensate piped to an onshore processing plant at Filyos, that will initially handle 350 million cubic feet per day of gas before this volume is boosted to 1.4 billion cfd.

The engineering, procurement, construction, and installation (EPCI) contract awarded to the Subsea Integration Alliance (SIA) of Subsea 7 and Schlumberger's OneSubsea division covers Sakarya's subsea production systems, umbilicals, risers and flowlines and an onshore early production facility (EPF).

Subsea 7 said its share of the SIA order is worth a minimum of $750 million.

The specific scope of work comprises the EPCI of the subsea pipelines and associated equipment to connect the subsea wells in about 2000 metres of water to the EPF.

In addition, the SIA will provide and install infield flowlines, control umbilicals, tie-in connections, associated subsea equipment, 170 kilometres of gas export pipeline and a mono-ethylene glycol injection line lined to the EPF.

Project management and engineering has already started and will be managed from the Subsea 7 office in Istanbul, Turkey.

Upstream was told that Hulya Ozgur, formerly with McDermott, is Subsea 7's managing director in Istanbul.

In addition, Turkish government documentation form earlier this year indicated that a number of vessels have been allocated to work on the project including Seven Antares, Seven Arctic, Seven Borealis, Seven Oceans, Seven Vega and Normand Oceanic.

Upstream was told that Saipem will be handling certain offshore installation work, while Van Oord is looking after the shore approach of the gas pipeline, with Wood project managing the various contractors.

SIA chief executive Olivier Blaringhem said: “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.”

Subsea 7's chief executive John Evans added that the Oslo-listed company “looks forward to building a long-term relationship with Turkish Petroleum and to making a significant contribution to the development and growth of the Turkish energy industry.”

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