(19)

(11)

EP 2 250 340 A2

(12)

(88) Date of publication A3: 05.11.2009 (43) Date of publication: 17.11.2010 Bulletin 2010/46 (21) Application number: 09705617.0 (22) Date of filing: 28.01.2009

(51) International Patent Classification (IPC):  E21B 43/00(2006.01) F04B 47/04(2006.01) F04B 9/08(2006.01) (86) International application number: PCT/US2009/032248 (87) International publication number: WO 2009/097338 (06.08.2009 Gazette 2009/32)

(84) Designated Contracting States: 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 SE SI SK TR Designated Extension States: AL BA RS (30) Priority: 28.01.2008 US 24020 02.12.2008 US 119160 (71) Applicant: Petro Hydraulic Lift System, L.L.C. Jennings, LA 70546 (US)	(72) Inventors: FESI, Michael, A. Houma Louisiana 70360 (US) LAPEYROUSE, Willard, J. Houma Louisiana 70363 (US) VINCENT, Kenneth, H. Carencro Louisiana 70520 (US) (74) Representative: Harrison Goddard Foote  Belgrave Hall Belgrave Street Leeds LS2 8DD Leeds LS2 8DD (GB)