Neptune speeds up North Sea Gjøa tieback operations

Subsea oil and gas production and gas-lift flowlines are in place for Neptune Energy’s Duva and Gjøa P1 tiebacks in the Norwegian sector of the North Sea.

The company and its partners accelerated the schedule for the project, which will connect two templates to the Neptune-operated Gjøa semi-submersible platform.

Gjøa P1 is now on course to deliver first oil two months ahead of the original plan, despite COVID-19 related issues. Where possible, parallel activity has continued in drilling, engineering, fabrication, and installation.

The company secured approval for both developments a year ago from the Norwegian authorities.

Neptune’s Head of the Subsea Gjøa Project, Crawford Brown said: “Developing these two live projects in parallel provides greater flexibility and allows Neptune and its partners to increase efficiency and reduce costs.

“We have taken a campaign approach in our use of vessels and common equipment, achieving positive synergies through joint mobilisation and focusing on collaboration between project teams for Neptune and our key contractors and partners…

“The development of these tiebacks will increase production and extend the production life of our operated Gjøa platform.”

Fabrication of the tie-in spools continues at TechnipFMC’s spool base in Evanton, UK.

Construction of the Duva and Gjøa P1 subsea manifolds is nearing completion, and full system integration testing is in progress.

The manifolds should be installed later this year, followed by associated tie-in operations.

Development drilling on both Gjøa P1 and Duva will continue through the end of February 2021, in parallel with topside work on the Gjøa platform.

First production from Gjøa P1 should flow later this year, with Duva set to come onstream during 3Q 2021.

Duva is 12 km (7.5 miles) from the platform.

The Gjøa P1 segment is in the northern part of the Gjøa field.

Source: Offshore Magazine