BP has chosen Allseas to hold out the subsea pipelay work for its ultra-deepwater Higher Tortue Ahmeyim (GTA) pure gasoline venture off the coast of Mauritania and Senegal.
Scheduled for early December 2023, Allseas will conduct the GTA offshore pipelay works utilizing its world-renowned building vessel, Pioneering Spirit. The corporate’s offshore building assist vessel, Oceanic, will present set up assist.
The Pioneering Spirit just isn’t solely the most important and most succesful heavy-lift building vessel but in addition the world’s largest pipelay vessel, with a formidable S-lay rigidity capability of 2000 tonnes.
Below the contract, Allseas will set up roughly 75 kilometres of excellent export pipelines, together with discipline termination assemblies (FTAs), in water depths starting from 1,500 to 2,800 metres. Moreover, they’ll lay 4 10-inch CRA infield traces, with FTAs as much as two kilometres lengthy, in 2,800 metres of water.
The set up of the pipelines and subsea constructions is a extremely complicated activity that requires meticulous planning and execution. The business and engineering groups from bp and Allseas have labored to judge the technical feasibility of putting in the pipelines and subsea constructions, initially designed for a J-lay answer.
“This settlement demonstrates each our willingness and talent to tackle extremely complicated and pipelay initiatives with fast-track planning and execution scopes,” mentioned Pieter Heerema, Chief Govt of Allseas. “We’re excited to work with bp on this venture, because it re-establishes the partnership between our two corporations and creates a platform for future collaboration and development.”
Allseas say its Pioneering Spirit is well-suited for the set up of mixed-diameter pipelines and subsea constructions in ultra-deepwater. With a exceptional 2,000-tonne rigidity holding capability, the vessel will likely be outfitted with a particular 1,000-tonne J-mode set up body, designed in-house and constructed at Allseas’ fabrication yard within the Netherlands, to put in the ten FTAs.
As pioneers of dynamically positioned S-lay know-how, characterised by its quick set up speeds in all water depths, Allseas has efficiently put in over 27,500 kilometers of pipeline worldwide.
