(19)

(11)

EP 2 368 160 A1

(12)

(43) Date of publication: 28.09.2011 Bulletin 2011/39 (21) Application number: 09796776.4 (22) Date of filing: 16.12.2009

(51) International Patent Classification (IPC):  G05B 13/04(2006.01) F02M 21/06(2006.01) G05B 17/02(2006.01) (86) International application number: PCT/GB2009/002894 (87) International publication number: WO 2010/070283 (24.06.2010 Gazette 2010/25)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR (30) Priority: 18.12.2008 GB 0823168 (71) Applicant: BP Exploration Operating Company Limited Sunbury on Thames, Middlesex TW16 7BP (GB)

(72) Inventors: CLARK, Richard, Greig Aberdeen AB32 6PP (GB) HARDING, Christopher Surrey GU24 8TQ (GB) JONES, Gareth, Andrew Aberdeen AB51 5PD (GB) LAMBON, Lawrence Aberdeen AB15 7PR (GB) PORTER, Alistair Aberdeen AB15 5BB (GB) SIMS, Mathew, James Surre GU16 8YW (GB) SHORE, Alan Aberdeen AB22 8XZ (GB) (74) Representative: Ford, Louise Diane  BP International Limited Global Patents & Technology Law Chertsey Road Sunbury on Thames, Middlesex TW16 7LN Sunbury on Thames, Middlesex TW16 7LN (GB)