(19)
(11) EP 2 815 063 A1

(12)

(43) Date of publication:
24.12.2014 Bulletin 2014/52

(21) Application number: 13769354.5

(22) Date of filing: 08.02.2013
(51) International Patent Classification (IPC): 
E21B 21/08(2006.01)
 E21B 47/18(2012.01)
(86) International application number:
PCT/US2013/025323
(87) International publication number:
WO 2013/148005 (03.10.2013 Gazette 2013/40)
(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: 23.12.2011 US 201113336981
21.08.2012 US 201213368997

(71) Applicants:
  • MacDonald, Robert
    Houston, TX 77010 (US)
  • Vecseri, Gabor
    Houston, TX 77040 (US)
  • Jennings, Benjamin
    Houston, TX 77095 (US)

(72) Inventors:
  • MacDonald, Robert
    Houston, TX 77010 (US)
  • Vecseri, Gabor
    Houston, TX 77040 (US)
  • Jennings, Benjamin
    Houston, TX 77095 (US)

(74) Representative: Hellmich, Wolfgang 
Lortzingstrasse 9
81241 München
81241 München (DE)

   


(54) CONTROLLED FULL FLOW PRESSURE PULSER FOR MEASUREMENT WHILE DRILLING (MWD) DEVICE