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(11)

EP 2 906 780 A1

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(43) Date of publication: 19.08.2015 Bulletin 2015/34 (21) Application number: 12780971.3 (22) Date of filing: 11.10.2012

(51) International Patent Classification (IPC):  E21B 43/12(2006.01) F04B 47/08(2006.01) F04D 13/04(2006.01) F03C 1/26(2006.01) F04B 47/10(2006.01) F04D 13/10(2006.01) (86) International application number: PCT/US2012/059652 (87) International publication number: WO 2014/058426 (17.04.2014 Gazette 2014/16)

(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: FMC Technologies, Inc. Houston, TX 77067 (US)	(72) Inventors: SHAW, Christopher, K. Katy, TX 77450 (US) HARTLEY, Howard, J. Tomball, TX 77377 (US) WANG, Wensen Katy, TX 77494 (US) SMEDSTAD, Eric, R. League City, TX 77573 (US) (74) Representative: Charlton, Peter John  Elkington and Fife LLP Prospect House 8 Pembroke Road Sevenoaks, Kent TN13 1XR Sevenoaks, Kent TN13 1XR (GB)