Hummingbird Spirit FPSOHummingbird FPSO heads to Antrim’s Fyne Field
Antrim Energy is to charter the circular FPSO Hummingbird Spirit for operations on its Fyne field in the UK's Central North Sea when it comes off its current program working for Centrica at Chestnut.
The former Sevan Marine floater, originally called Sevan Hummingbird, but now owned and operated by Teekay Offshore, has been on its current assignment for four years. The heads of agreement covering the floater was signed as Antrim filed its environmental statement for Fyne (21/28a) where it aims to produce around 15mmbbls of oil over a seven year period beginning late 2014.
The development plan is based on six subsea wells - four esp-boosted producers and two water injectors - at three locations. Horizontal trees will be used as one would expect with esps.
The main drill center will be at Central Fyne where a production manifold, 2.4km from the FPSO, linking all of the wells to the FPSO will be located along with two producers and one injector. There will also be one producer at NW Fyne 1.6km away and one producer and one injector at Area 4 which is another 2.9km distant.
The production pipeline system will be 8in infield and 8in and 10in from manifold to the FPSO. There will also be 8in water injection lines and a combined power cable and umbilical to service the wells and the esps. There will also be four 8in risers - two for production and one for water injection - plus four power umbilicals.
This is another ‘old’ North Sea field, having been first discovered in 1986 by Mobil. An appraiser was drilled the following year and then it all went dormant until 2008 when Antrim came in and drilled another.
In between then and now, Premier Oil came in, got excited briefly with an appraisal well and exited almost as quickly giving it all back to Antrim to run.
The other thing that Premier did was to look at a strange facility - a small production semi with storage in the pontoons. Antrim also had a look and decided on the circular unit for a host of reasons, but primarily because it was already here in the North Sea. There will be some topside modifications including installing an electrostatic coalescer to deal with the high salt content, a new gas turbine to drive the esps and additional i-tubes and topside manifolding to additional risers.
Production of 20,000b/d at startup is due to fall off sharply almost immediately. It will be down 25% by the end of the first year of production and all the way down to 6,000b/d by the end of 2017. Operations are due to cease by 2021.
Would you like to see more of SEN? For a four-issue trial subscription, send an email to [email protected] and simply say 'trial please'.
Subscribe
