(19)

(11)

EP 2 067 058 A2

(12)

(88) Date of publication A3: 05.06.2008 (43) Date of publication: 10.06.2009 Bulletin 2009/24 (21) Application number: 07804257.9 (22) Date of filing: 13.09.2007

(51) International Patent Classification (IPC):  G01V 3/12(2006.01) (86) International application number: PCT/GB2007/003464 (87) International publication number: WO 2008/032065 (20.03.2008 Gazette 2008/12)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 15.09.2006 GB 0618240 (71) Applicant: Electromagnetic Geoservices ASA 7041 Trondheim (NO)	(72) Inventors: MITTET, Rune 7014 Trondheim (NO) AAKERVIK, Odd Marius 7012 Trondheim (NO) (74) Representative: Copsey, Timothy Graham  Kilburn & Strode LLP 20 Red Lion Street London WC1R 4PJ London WC1R 4PJ (GB)