(19)

(11)

EP 3 155 213 A1

(12)

(43) Date of publication: 19.04.2017 Bulletin 2017/16 (21) Application number: 14815860.3 (22) Date of filing: 16.06.2014

(51) International Patent Classification (IPC):  E21B 43/01(2006.01) (86) International application number: PCT/IB2014/002203 (87) International publication number: WO 2015/193698 (23.12.2015 Gazette 2015/51)

(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 Designated Extension States: BA ME (71) Applicant: Total SA 92400 Courbevoie (FR)	(72) Inventors: VU, Van-Khoi F-75019 Paris (FR) BOURGUIGNON, Jean-Claude F-75017 Paris (FR) DE GELIS, Bertrand F-75017 Paris (FR) (74) Representative: Cabinet Plasseraud  66 rue de la Chaussée d'Antin 75440 Paris Cedex 09 75440 Paris Cedex 09 (FR)