Xmas comes early for GWF-2


From collaboration comes acceleration and the Greater Western Flank 2 (GWF-2) Project has produced a superb example of what great teamwork can achieve. The Project recently took delivery of its first batch of four subsea Xmas tree systems – two months ahead of schedule and only 14 months since the final investment decision.

GWF-2 is the fourth major gas development for the North West Shelf Project in the past seven years. Eight subsea wells will unlock some 1.6 trillion cubic feet of gas in six fields with tie-backs to the Goodwyn A platform, some 35km away. First gas is scheduled for the second half of 2019. The earlier-than-expected hand-over of the Xmas trees took place in April at the Malaysia facility of the vendor, TechnipFMC. 

Fiachra Gleeson, GWF-2 subsea delivery manager, says one benefit of the early delivery was the opportunity to use an installation vessel to install the tubing head spools on to the wellheads instead of by the drill rig. “This means less handling for the drill rig, and that means a safer deployment of the tubing head spools,” he explains. 

Baard Kristiansen, GWF-2 Light Well Intervention (LWI) package lead, says it’s the teamwork developed by the GWF-2 Project, Subsea and Pipelines (SS&PL), Drilling and Completions (D&C), and Contracts and Procurement that enabled the fast track award of this scope to contractor DOF Subsea. “The approved change request and subsequent short notice contract award, within a period of one month, exemplifies innovation, collaboration and acceleration across the organisation at its best,” Baard says. 

Subsea hardware package lead Jamie VanDeVelde points out that collaboration was also evident in the decision by the GWF-2 Project, D&C and SS&PL to adopt LWI, which involves a vessel other than the drill rig to install the subsea trees. Instead, TechnipFMC’s Island Performer – a purpose-built LWI vessel – will install all eight trees on the already-completed wells at each drill centre. Jamie notes: “It eliminates the need for significant maintenance costs and shortens the schedule for the rig and the project.” D&C well delivery manager Paul Kelley says: “This is a great outcome for the business because it reduced risk while improving rig schedule certainty.” 

Andy Fielding, GWF-2 Project manager says: “This is an excellent example of how collaboration between delivery teams can really make a difference, leading directly to an accelerated solution that has benefitted both the project and the business, while reducing the HSE risk.” “Everybody should be very proud of what they have achieved to date.”  

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Trunkline Q2 2017​​​​