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(11)

EP 3 004 528 A1

(12)

(43) Date of publication: 13.04.2016 Bulletin 2016/15 (21) Application number: 14807517.9 (22) Date of filing: 04.06.2014

(51) International Patent Classification (IPC):  E21B 36/00(2006.01) F28D 21/00(2006.01) E21B 43/12(2006.01) (86) International application number: PCT/US2014/040864 (87) International publication number: WO 2014/197567 (11.12.2014 Gazette 2014/50)

(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: 06.06.2013 US 201361831880 P (71) Applicant: Shell Internationale Research Maatschappij B.V. 2596 HR The Hague (NL)

(72) Inventors: HATTON, Gregory John Houston, Texas 77094 (US) LACY, Claud Eugene Sugar Land, Texas 77479 (US) LITTELL, Howard Steven Houston, Texas 77095 (US) ONSTAD, Andrew New Orleans, Louisiana70125 (US) PEARSON, John Lucas Katy, Texas 77450 (US) STOMIEROWSKI, Scott Edward Fulshear, Texas 77441 (US) ZABARAS, George John Houston, Texas 77025 (US) (74) Representative: Matthezing, Robert Maarten et al Shell International B.V. Intellectual Property Services P.O. Box 384 2501 CJ The Hague 2501 CJ The Hague (NL)