(19)
(11) EP 2 971 451 A1

(12)

(43) Date of publication:
20.01.2016 Bulletin 2016/03

(21) Application number: 14764600.4

(22) Date of filing: 14.03.2014
(51) International Patent Classification (IPC): 
E21B 19/08(2006.01)
E21B 17/10(2006.01)
(86) International application number:
PCT/US2014/028382
(87) International publication number:
WO 2014/144108 (18.09.2014 Gazette 2014/38)
(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: 15.03.2013 US 201361792740 P

(71) Applicant: Longyear TM, Inc.
South Jordan, UT 84095 (US)

(72) Inventor:
  • MIGNAULT, Rene
    Haileybury, ON P0J 1K0 (CA)

(74) Representative: Walker, Stephen et al
Lincoln IP 9 Victoria Street
Aberdeen Aberdeenshire AB10 1XB
Aberdeen Aberdeenshire AB10 1XB (GB)

   


(54) DRILL ROD GUARD AND SYSTEMS AND METHODS OF USING SAME