(19)
(11) EP 3 387 221 A1

(12)

(43) Date of publication:
17.10.2018 Bulletin 2018/42

(21) Application number: 16873674.2

(22) Date of filing: 06.12.2016
(51) International Patent Classification (IPC): 
E21B 47/18(2012.01)
E21B 21/10(2006.01)
(86) International application number:
PCT/US2016/065146
(87) International publication number:
WO 2017/100189 (15.06.2017 Gazette 2017/24)
(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: 07.12.2015 US 201514961364

(71) Applicant: Baker Hughes, a GE company, LLC
Houston, TX 77073 (US)

(72) Inventors:
  • LEHR, Joerg
    29229 Celle (DE)
  • FULDA, Christian
    31319 Sehnde (DE)

(74) Representative: Lambacher, Michael 
V. Füner Ebbinghaus Finck Hano Patentanwälte Mariahilfplatz 3
81541 München
81541 München (DE)

   


(54) MUD PULSE TELEMETRY WITH CONTINUOUS CIRCULATION DRILLING