(19)

(11)

EP 2 153 020 A2

(12)

(88) Date of publication A3: 07.05.2009 (43) Date of publication: 17.02.2010 Bulletin 2010/07 (21) Application number: 08750010.4 (22) Date of filing: 02.05.2008

(51) International Patent Classification (IPC):  E21B 43/10(2006.01) (86) International application number: PCT/EP2008/055442 (87) International publication number: WO 2008/135538 (13.11.2008 Gazette 2008/46)

(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: 04.05.2007 GB 0708631 (71) Applicant: Dynamic Dinosaurs B.V. 2288GK Rijswijk (NL)	(72) Inventor: LOHBECK, Wilhelmus, Christianus, Maria NL-2288GK Rijswijk (NL) (74) Representative: Hyden, Martin Douglas  Rouse Patents 1st Floor 228-240 Banbury Road Oxford Oxfordshire OX2 7BY Oxford Oxfordshire OX2 7BY (GB)