(19)

(11)

EP 2 971 450 A1

(12)

(43) Date of publication: 20.01.2016 Bulletin 2016/03 (21) Application number: 13876579.7 (22) Date of filing: 09.04.2013

(51) International Patent Classification (IPC):  E21B 19/06(2006.01) E21B 19/08(2006.01) E21B 19/02(2006.01) E21B 17/02(2006.01) (86) International application number: PCT/US2013/035784 (87) International publication number: WO 2014/133566 (04.09.2014 Gazette 2014/36)

(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: 28.02.2013 US 201313780985 (71) Applicant: Frank's International, LLC Houston, TX 77042 (US)	(72) Inventors: WEBRE, Charles, Michael Lafayette, LA 70501 (US) BOULIGNY, Vernon, Joseph, Jr. New Iberia, LA 70562 (US) BEGNAUD, Brian, David Youngsville, LA 70592 (US) SIBILLE, Mark, Stephen Lafayette, LA 70508 (US) BROWN, Dougal, Hugo Inverness IV3 8RQ (GB) (74) Representative: Diehl & Partner GbR  Patentanwälte Erika-Mann-Strasse 9 80636 München 80636 München (DE)