Update on UKCS Field Development Projects - Intsok

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Field Clair Ridge Area West of Shetlands Operator BP Development concept Platform(s) Transport concept 10-15km oil pipeline to Clair, 35km gas pipeline to Laggan Start-up Mid 2015 Comments: BP has revealed its plans for the development of oil and gas reserves on Clair Ridge, in the north of the main Clair field. This is a £4 bn project calling for two bridge-linked platforms, one for drilling and processing functions, the other for quarters and utilities, with a combined weight of 70,000t and production capacity of 120,000 b/d. Bids have been invited for jackets, topsides and predrilling template, BP said in Apr. Start-up is scheduled for 2015. FEED for development options was performed by Amec and KCA Deutag subsidiary RDS is contracted for design of the drilling facilities, including detailed design. There will be at least 28 wells, some of which will be pre-drilled. Oil will be exported via Clair and gas via the Laggan pipeline. BP has confirmed that its two-well appraisal campaign on Clair Ridge in 2006 and 2007 was successful; an appraisal on Clair North in 2006 also found oil. A third stage of development, focusing on reserves in the south of the field, is said to be in the early stages of preparation. Field Clipper South Area Southern North Sea Operator RWE Dea Development concept Platform Transport concept 20km pipeline to Loggs Start-up Q2 2012 Comments: Project sanction for the Clipper South gas field is now looked for in June and start-up in Q2 2012, RWE Dea reports. Three wells will be drilled in the first phase, followed by up to another three. They will be hydraulically fractured, for which reason the platform will be manned for at least three years before switching to unmanned. Genesis has performed FEED for the platform, which will have a 2,000t topsides and accommodation for 40 personnel. Fabrication bids have been submitted by three yards. Gas will be exported via Loggs. Tenders for pipelay and platform installation are expected to be issued by mid year. RWE is likely to seek to coordinate the drilling programme with that for Breagh, looking for synergies. Schlumberger will provide fracture and stimulation services under a long-term contract negotiated with the previous operator Fairfield, now RWE’s partner, using the specialised vessel Siem Sailor. Reserves are estimated at 200 bcf. www.intsok.com | 12
Field Columbus Area Central North Sea Operator Serica Development concept Subsea Transport concept 6km pipeline to Lomond Start-up 2013 Comments: Serica plans to submit a modified field development plan covering the whole of the Columbus gas/condensate field later in the year. This follows discussions with BG whose 23/21-7 appraisal well in late 2008/early 2009 proved an extension of the field from Serica’s 23/16f into BG’s 23/21. The field will be developed with three-four horizontal subsea production wells tied back to BG’s Lomond platform, six km to the south-east – BP’s Marnock was the other option for the host. The export pipeline will be 12-14 inches. Reserves in Serica’s block are estimated at 17.7m boe; the volume in BG’s block is smaller. Start-up has probably been pushed back to 2013, Serica says. Field Crawford II Area Northern North Sea Operator Fairfield Development concept Subsea or jackup platform Transport concept 30km pipeline to East Brae or offshore loading Start-up 2011/12 Comments: Fairfield aims to decide the concept for redeveloping Crawford and sanction the project by mid year. It is evaluating two alternatives; a jackup drilling rig with production facilities and offshore loading or a subsea tieback to Marathon’s East Brae. In Dec it completed a joint feasibility study with Marathon and BP for the subsea tieback of Crawford and Devenick to the East Brae platform. There are likely to be four wells, one of them an outlier located about 1.2 km distant from the drilling centre. In the subsea scenario the wells would be tied into a manifold, and production would be exported through a 10in multiphase pipeline and lift-gas imported through a 4in line. Genesis is responsible for FEED and detailed design of a subsea development. Wells will need to be fracced - a long-term contract for fracture and stimulation services has been signed with Schlumberger, which will use the specialised vessel Siem Sailor. Recoverable reserves are estimated at 26m bbl. www.intsok.com | 13
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: Field Cheviot Area Northern 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 and 24: Field Kew Area Southern North Sea O
Page 25 and 26: Field Moth Area Central 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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