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(11)

EP 3 247 872 A2

(12)

(88) Date of publication A3: 22.09.2016 (43) Date of publication: 29.11.2017 Bulletin 2017/48 (21) Application number: 16702317.5 (22) Date of filing: 20.01.2016

(51) International Patent Classification (IPC):  E21B 33/068(2006.01) E21B 17/10(2006.01) E21B 43/26(2006.01) (86) International application number: PCT/US2016/014082 (87) International publication number: WO 2016/118596 (28.07.2016 Gazette 2016/30)

(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 MD (30) Priority: 20.01.2015 US 201562105355 P 19.01.2016 US 201615000233 (71) Applicant: GE Oil & Gas Pressure Control LP Houston, TX 77041 (US)	(72) Inventors: AYRES, Ana Houston, TX 77041 (US) CHAN, Kwong-onn Houston, TX 77041 (US) WILLIAMS, Jason Houston, TX 77041 (US) HEGDE, Gajanan Houston, TX 77041 (US) (74) Representative: Lee, Brenda  GE International Inc. Global Patent Operation - Europe The Ark 201 Talgarth Road Hammersmith London W6 8BJ London W6 8BJ (GB)