(19)

(11)

EP 1 433 004 A1

(12)

(43) Date of publication: 30.06.2004 Bulletin 2004/27 (21) Application number: 01958271.7 (22) Date of filing: 24.08.2001

(51) International Patent Classification (IPC)7: G01V 1/28 (86) International application number: PCT/IB2001/001503 (87) International publication number: WO 2003/019235 (06.03.2003 Gazette 2003/10)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR (71) Applicants: Saudi Arabian Oil Company Dhahran 31311 (SA) Aramco Services Company Houston, TX 72210-4535 (US)	(72) Inventor: SAGGAF, Muhammad M. Dhahran (SA) (74) Representative: Gervasi, Gemma, Dr. et al Notarbartolo & Gervasi S.p.A.,Corso di Porta Vittoria, 9 20122 Milano 20122 Milano (IT)