(19)

(11)

EP 2 678 516 A2

(12)

(88) Date of publication A3: 24.10.2013 (43) Date of publication: 01.01.2014 Bulletin 2014/01 (21) Application number: 12748918.5 (22) Date of filing: 08.02.2012

(51) International Patent Classification (IPC):  E21B 19/16(2006.01) E21B 19/18(2006.01) E21B 17/00(2006.01) (86) International application number: PCT/US2012/024257 (87) International publication number: WO 2012/115778 (30.08.2012 Gazette 2012/35)

(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 (30) Priority: 25.02.2011 US 201113035833 25.02.2011 US 201113035774 (71) Applicant: Merlin Technology Inc. Kent, WA 98032 (US)	(72) Inventors: CHAU, Albert, W. Woodinville, WA 98072 (US) MEDEIROS, Benjamin, John Orting, WA 98360 (US) (74) Representative: Richards, John et al Ladas & Parry LLP Dachauerstrasse 37 80335 München 80335 München (DE)