Pipelay, Construction Work Completed for Chevron in Nigeria
A pipelay and construction campaign for the Sonam Field Development Project for Chevron Nigeria Ltd. has been successfully completed, announced Sea Trucks Group.
The contract for the project was awarded to West African Ventures Ltd, Sea Trucks’ principle Nigerian business in June 2015.
The Sonam Field Development Project is located in shelf concession OML 91, Escravos Area, offshore Nigeria, in water depths ranging from 7 meters around Okan to 66 meters at Sonam.
The scope of work encompassed transportation and installation of the Okan PRP jacket, piles, deck and bridge; survey of pipeline route and the installation of the 32km x 20’’ pipeline between Sonam NWP and Okan PRP; fabrication, load-out and installation of risers and subsea spools for Sonam NWP and Okan PRP; and pre-commissioning and commissioning of the pipeline (including hydro-test, dewatering, drying and Nitrogen Purging).
Installation engineering activities and the preparations of project management documentation commenced immediately upon the contract signing in June 2015, 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.