(19)

(11)

EP 2 737 248 A1

(12)

(43) Date of publication: 04.06.2014 Bulletin 2014/23 (21) Application number: 12735158.3 (22) Date of filing: 17.07.2012

(51) International Patent Classification (IPC):  F22B 1/28(2006.01) E21B 36/00(2006.01) H05B 6/10(2006.01) F22B 37/10(2006.01) E21B 43/24(2006.01) (86) International application number: PCT/EP2012/063952 (87) International publication number: WO 2013/014023 (31.01.2013 Gazette 2013/05)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 25.07.2011 FR 1156726 (71) Applicant: Total SA 92400 Courbevoie (FR)	(72) Inventor: CORRE, Bernard F-64000 Pau (FR) (74) Representative: Hirsch & Associés  58, avenue Marceau 75008 Paris 75008 Paris (FR)