Sea Trucks completes Chevron Nigeria work

Sea Trucks Group’s Nigerian business, West African Ventures (WAV), has completed the pipelay and construction campaign for Chevron’s Sonam Field development project.

The Sonam Field development project is located in shelf concession OML 91, Escravos Area, offshore Nigeria, in water depths ranging from 7m around Okan to 66m at Sonam.

The scope of work, which was awarded in June 2015, included:

• Transportation and installation of the Okan PRP jacket, piles, deck and bridge,
• Survey of pipeline route and the installation of the 32km x 20in pipeline between Sonam NWP and Okan PRP,
• Fabrication, load-out and installation of risers and subsea spools for Sonam NWP and Okan PRP,
• Pre-commissioning and commissioning of the pipeline (hydro-test, dewatering, drying and nitrogen purging).

Installation engineering activities and the preparations of project management documentation commenced immediately while field installation started with the pre-lay survey in November 2015.

The group utilized two of its DP3 pipelay construction vessels, Jascon 30, for the pipelay operations and Jascon 25, for the installation of the jacket, deck and bridge. Installation of subsea equipment as well as pre-commissioning activities were carried out by Jascon 8, one of the group's construction barges. Also a number of the group's tugs and barges supported the offshore campaign. The offshore work was completed in June 2016.

Image from WAV.