Update on UKCS Field Development Projects - Intsok

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Field Mariner Area Northern North Sea Operator Statoil Development concept Platform Transport concept Offshore loading Start-up H2 2015 Comments: Despite tax advantages offered in the 2009 budget, Statoil has stuck to its decision to delay development of the Mariner heavy-oil field by a year – it now aims to seek sanction in mid 2011. Earliest start-up is 2015. In the interim the project has not been shelved but slowed. Concept selection is due to be made in Q3 after which FEED will begin. Development will require capital spending of $1.8 bn on facilities and $1.4 bn on drilling. According to a partner, the benefits of an early production system are enhanced by the budget proposals, and this is one of the scenarios under discussion. In 2009 semisub Stena Spey plugged and abandoned Broch exploration well 9/11e-14 without comment – the prospect is a possible satellite to Mariner. Development is expected to involve a fixed platform combined with export by offshore loading. Moreover, it could perhaps act as a hub platform serving several fields, according to Statoil. The company has acquired a 30% interest in three licences covering 9/12e and other nearby blocks through funding exploration activities – the Broch well was part of this deal. Field Montrose Satellites Area Central North Sea Operator Talisman Development concept Subsea Transport concept Pipelines to Montrose: Cayley 10 km, Godwin 8 km; Shaw 8 km to Arbroath Start-up 2013? Comments: In Jan Talisman said it was examining development options for the Cayley, Godwin and Shaw discoveries in the Montrose area. Fiddich, which it previously planned to develop jointly with Cayley, has therefore dropped out of the frame. Subsea tiebacks to the Montrose/Arbroath infrastructure are presumably planned. A new platform is likely to be installed at Montrose to accommodate the tiebacks, and Talisman says that the Montrose/Arbroath facilities will be upgraded. www.intsok.com | 24
Field Moth Area Central North Sea Operator BG Development concept Subsea? Transport concept 2km pipeline to Lomond? Start-up 2012/13 Comments: In 2008 Oilexco North Sea made a significant oil/gas/condensate discovery with Moth exploration well 23/21-6 and a sidetrack, drilled by semisub Ocean Guardian. The well was drilled under a farm-in deal whereby Oilexco gained a 50% stake in the licence though BG remains the operator. The company said the field was capable of producing 44 MMcf/d of gas and 4,400 b/d of liquids. Premier, which has taken over Oilexco, says it is studying the Triassic potential in 23/22b to the east. An appraisal well on Moth is planned but it seems this will only come in 2011, thus pushing back likely start-up to 2012 or beyond. Moth is likely to be tied back two km to Lomond, also a gas/condensate field, where BG has taken over from BP as operator as part of an asset swap. A subsea solution seems most likely. Field Pi (NOR) Area Central North Sea Operator BG Development concept Subsea Transport concept Pipelines to Armada Start-up Oct 2011 Comments: BG is seeking approval to develop the Pi field in the Norwegian sector as a subsea tieback to its Armada platform in the UK sector. Two wells will be drilled, one on Pi North and one on Pi South, and each will be tied back separately to a seabed manifold weighing about 100t close to the platform. The pipelines will be 8in/12in pipe-in-pipe systems, with the inner pipes made from 22Cr or 13Cr steel. The Pi North line will be 8.2 km long and Pi South 5.6 or 7.2 km depending on the route chosen. The manifold will be fitted with subsea multiphase flowmeters and a subsea isolation valve. A new 30in riser caisson will be installed on the platform jacket. Drilling and subsea installation are both scheduled to start in spring 2011, and start-up is scheduled for the following Oct. www.intsok.com | 25
Page 1 and 2: Update on UKCS Fie
Page 3 and 4: Field *Maule Area Central North Sea
Page 5 and 6: Field Auk Redevelopment Area Centra
Page 7 and 8: Field Barbara/Phyllis Area Central
Page 9 and 10: Field Bressay Area Northern North S
Page 11 and 12: Field Cheviot Area Northern North S
Page 13 and 14: Field Columbus Area Central North S
Page 15 and 16: Field Devenick Area Northern North
Page 17 and 18: Field Franklin West Area Central No
Page 19 and 20: Field Harrison Area Southern North
Page 21 and 22: Field *Jackdaw Area Central North S
Page 23: Field Kew Area Southern North Sea O
Page 27 and 28: Field Rosebank/Lochnagar Area West
Page 29 and 30: Field Vulcan East Area Southern Nor
Page 31 and 32: 3 Possible future projects One new
Page 33 and 34: Field Maureen Redevelopment Area Ce
Page 35 and 36: Field Sheryl Area Central North Sea
Page 37 and 38: 4 Decommissioning projects No new e
Page 39 and 40: Field Kittiwake SAL System and Pipe
Page 41 and 42: Field Welland Area Southern North S

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