(19)

(11)

EP 2 217 789 A2

(12)

(88) Date of publication A3: 25.06.2009 (43) Date of publication: 18.08.2010 Bulletin 2010/33 (21) Application number: 08846003.5 (22) Date of filing: 29.10.2008

(51) International Patent Classification (IPC):  E21B 33/076(2006.01) E21B 19/14(2006.01) E21B 23/00(2006.01) (86) International application number: PCT/GB2008/003680 (87) International publication number: WO 2009/056839 (07.05.2009 Gazette 2009/19)

(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 MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 31.10.2007 GB 0721349 (71) Applicant: Expro AX-S Technology Limited Lion House Dyce Aberdeen AB21 0LQ (GB)	(72) Inventor: MEFF, Andrew Inverurie Aberdeenshire AB51 5BY (GB) (74) Representative: Naismith, Robert Stewart  Marks & Clerk LLP Aurora 120 Bothwell Street Glasgow G2 7JS Glasgow G2 7JS (GB)