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(11)

EP 2 861 815 A1

(12)

(43) Date of publication: 22.04.2015 Bulletin 2015/17 (21) Application number: 13803777.5 (22) Date of filing: 14.06.2013

(51) International Patent Classification (IPC):  E21B 10/62(2006.01) E21B 23/00(2006.01) E21B 10/627(2006.01) (86) International application number: PCT/US2013/045943 (87) International publication number: WO 2013/188798 (19.12.2013 Gazette 2013/51)

(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: 14.06.2012 US 201261659677 P (71) Applicant: Bloomfield, John Hilton Head Island, SC 29926 (US)	(72) Inventor: Bloomfield, John Hilton Head Island, SC 29926 (US) (74) Representative: Brown, Fraser Gregory James et al Cleveland 10 Fetter Lane London EC4A 1BR London EC4A 1BR (GB)