The project scope covers various engineering, procurement, tie-in and fabrication work plus the installation of one manifold. Project completion is expected in the first half of 2016.
Technip's advanced diving support vessel Skandi Arctic will be used with divers expected to carry out most of the work at water depths of around 120 metres.
"This award confirms our leading position as contractor for diving operations in the North Sea," Technip Norway managing director Odd Stromsnes said.
"This project will be the second one awarded to Technip for the extension of the existing infrastructure on the Alvheim field, the first one having been executed in 2012 and 2013. We are looking forward to continuing and consolidating our collaboration with Marathon through this project."
The value of the contract was not revealed.