(19)

(11)

EP 2 181 237 A1

(12)

(43) Date of publication: 05.05.2010 Bulletin 2010/18 (21) Application number: 08779057.2 (22) Date of filing: 24.07.2008

(51) International Patent Classification (IPC):  E21B 6/00(2006.01) F16D 3/06(2006.01) E21B 7/24(2006.01) E21B 17/046(2006.01) (86) International application number: PCT/NL2008/050511 (87) International publication number: WO 2009/014444 (29.01.2009 Gazette 2009/05)

(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: 24.07.2007 NL 1034180 24.07.2007 US 961798 P (71) Applicant: Sonicsampdrill B.V. 6987 ER Giesbeek (NL)	(72) Inventors: OUWERKERK, Cornelis Gerardus NL-6922 HV Duiven (NL) DAMMAN, Leonardus Vicentius NL-7081 Gendringen (NL) (74) Representative: Peters, Sebastian Martinus  Octrooibureau Vriesendorp & Gaade B.V. Dr. Kuyperstraat 6 2514 BB Den Haag 2514 BB Den Haag (NL)