Norway's Subsea 7 and New York-listed contractor Schlumberger are in talks to form a new joint venture that builds on their 2015 Subsea Integration Alliance (SIA).

SIA combines the subsea production and processing systems of OneSubsea, a joint venture between Cameron and Schlumberger, with the subsea umbilical, riser and flowline systems (SURF) capability of Subsea 7.

The new alliance will help reduce the total cost of ownership and enhance customer efficiency throughout the asset lifecycle, while maximising total production, Subsea 7 said.