From the North Sea (NT): Total plans to bring the Glenlivet (SEN, 31/15) gas/condensate field onstream in 2018 with an ‘ullage-filling’ purpose in mind.
This added production will offset the decline at Laggan/Tormore (31/12) and Edradour (31/15) and maintain full use of the pipelines and gas plant processing capacity established to serve its west of Shetlands gas fields.
Edradour will be phased-in in late 2017, while the flagship Laggan/Tormore development, originally set for start-up in mid year, is now due to come onstream year-end, according to Total, which has denied partner Dong’s claims that it will be delayed until next year because of late-running work on the gas plant.
Because offshore operations WoS are mainly restricted to the summer months, a lot of the work on Edradour and Glenlivet will be undertaken as part of the same project, says the Glenlivet environmental statement.
The drilling of Glenlivet’s two subsea producers is scheduled for H1 2015 and completion for summer 2016. Total has two semis on contract through most of 2015 – West Phoenix, which is currently working on Laggan, and Sedco 714, either of which might be assigned to drilling the wells. Pipelay and subsea construction will be performed in 2017, when similar work for Edradour is also due to be completed.
The Glenlivet wells will be tied into a four-slot manifold, and production will be exported through a 35km, 12in pipeline to inline tee 3 (ILT3) on the Laggan/Tormore twin export pipelines, which it will access through the Edradour plem.
MEG will be provided via a 6in line, with a 2in services line piggybacked on it, running 18km from the Edradour manifold, from which the 19.2km umbilical will also run.
Subsea equipment for both Edradour and Glenlivet has been ordered from FMC, which also supplied Laggan/Tormore, but otherwise Total has gone to new suppliers.
Edradour pipelay-subsea construction has been awarded to Technip, leaving Subsea 7, the Laggan/Tormore contractor, out in the cold. The scope includes the umbilical, which will be manufactured by Technip in Newcastle
Technip also has the Glenlivet pipelay-construction work, or at least an option for it, Total tells SEN, presumably including the umbilical again.
The Glenlivet ES is ambiguous about how long the field will produce. It gives production profiles up to 2029, but also says production may continue for up to 15 years. Peak production will be in 2019, with maximum output of 4mcm/d of gas and 2,200b/d of condensate. Reserves as calculated from the production profiles – maximum estimates again – are 9.4bcm and 5.2mmbbls.
(From the Editor: Dong has sold a 5% stake in Edradour to harmonise the shareholding with that at Glenlivet. Total holds 80% of the two projects and Dong the remainder.)
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