(19)
(11) EP 3 329 078 A1

(12)

(43) Date of publication:
06.06.2018 Bulletin 2018/23

(21) Application number: 16831450.8

(22) Date of filing: 29.07.2016
(51) International Patent Classification (IPC): 
E21B 7/02(2006.01)
E02F 5/18(2006.01)
 E21B 7/04(2006.01)
(86) International application number:
PCT/US2016/044855
(87) International publication number:
WO 2017/020008 (02.02.2017 Gazette 2017/05)
(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
Designated Validation States:
MA MD

(30) Priority: 29.07.2015 US 201562198423 P

(71) Applicants:
  • THE CHARLES MACHINE WORKS INC
    Perry, Oklahoma 73077-0066 (US)
  • Metcalf, Max A.
    Stillwater, OK 74071 (US)
  • Porter, Rick G.
    Perry, OK 73077 (US)

(72) Inventors:
  • METCALF, Max, A.
    Stillwater, OK 74071 (US)
  • PORTER, Rick, G.
    Perry, OK 73077 (US)

(74) Representative: Uexküll & Stolberg 
Partnerschaft von Patent- und Rechtsanwälten mbB Beselerstraße 4
22607 Hamburg
22607 Hamburg (DE)

   


(54) MAKEUP AND BREAKOUT SYSTEM FOR HORIZONTAL DIRECTIONAL DRILLING