(19)

(11)

EP 2 935 652 A1

(12)

(43) Date of publication: 28.10.2015 Bulletin 2015/44 (21) Application number: 13826685.3 (22) Date of filing: 20.12.2013

(51) International Patent Classification (IPC):  C23C 28/04(2006.01) E21B 17/10(2006.01) E21B 10/00(2006.01) C23C 28/00(2006.01) E21B 17/00(2006.01) (86) International application number: PCT/US2013/076970 (87) International publication number: WO 2014/100608 (26.06.2014 Gazette 2014/26)

(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 (30) Priority: 21.12.2012 US 201213724403 19.12.2013 US 201314133902 (71) Applicant: ExxonMobil Research and Engineering Company Annandale, NJ 08801-0900 (US)

(72) Inventors: BAILEY, Jeffrey, R. Houston, TX 77019 (US) RAJAGOPALAN, Srinivasan Easton, PA 18040 (US) HAQUE, Tabassumul Deptford, NJ 08096 (US) OZEKCIN, Adnan Bethlehem, PA 18017 (US) ERTAS, Mehmet, Deniz Bethlehem, PA 18020 (US) JIN, Hyunwoo Easton, PA 18040 (US) ZHAO, Bo Houston, TX 77006 (US) MUELLER, Russell, R. Washinton, NJ 07882 (US) (74) Representative: ExxonMobil Chemical Europe Inc.  IP Law Europe Hermeslaan 2 1831 Machelen 1831 Machelen (BE)