(19)

(11)

EP 3 201 429 A1

(12)

(43) Date of publication: 09.08.2017 Bulletin 2017/32 (21) Application number: 15756319.8 (22) Date of filing: 20.08.2015

(51) International Patent Classification (IPC):  E21B 43/267(2006.01) E21B 34/10(2006.01) E21B 43/119(2006.01) E21B 34/06(2006.01) E21B 43/116(2006.01) (86) International application number: PCT/US2015/045988 (87) International publication number: WO 2016/053497 (07.04.2016 Gazette 2016/14)

(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 Designated Validation States: MA (30) Priority: 03.10.2014 US 201462059517 P 13.02.2015 US 201562116084 P (71) Applicant: ExxonMobil Upstream Research Company Spring TX 77389 (US)	(72) Inventors: TOLMAN, Randy, C. Spring, TX 77386 (US) MORROW, Timothy, I. Humble, TX 77396 (US) BENISH, Timothy, G. Pearland, TX 77584 (US) (74) Representative: ExxonMobil Chemical Europe Inc.  IP Law Europe Hermeslaan 2 1831 Machelen 1831 Machelen (BE)