(19)

(11)

EP 2 817 478 A1

(12)

(43) Date of publication: 31.12.2014 Bulletin 2015/01 (21) Application number: 13751870.0 (22) Date of filing: 22.02.2013

(51) International Patent Classification (IPC):  E21B 10/32(2006.01) (86) International application number: PCT/US2013/027399 (87) International publication number: WO 2013/126752 (29.08.2013 Gazette 2013/35)

(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: 24.02.2012 US 201261602707 P (71) Applicant: Deltide Energy Services LLC Harvey, LA 70059 (US)	(72) Inventor: RUTTLEY, David, J. Marrero, LA 70072 (US) (74) Representative: Miller, James Lionel Woolverton et al Kilburn & Strode LLP 20 Red Lion Street London WC1R 4PJ London WC1R 4PJ (GB)