(19)
(11) EP 3 707 346 A1

(12)

(43) Date of publication:
16.09.2020 Bulletin 2020/38

(21) Application number: 17817385.2

(22) Date of filing: 17.11.2017
(51) International Patent Classification (IPC): 
E21B 44/00(2006.01)
E21B 19/16(2006.01)
E21B 19/00(2006.01)
(86) International application number:
PCT/US2017/062315
(87) International publication number:
WO 2019/089061 (09.05.2019 Gazette 2019/19)
(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: 06.11.2017 US 201715804671
06.11.2017 US 201715804690

(71) Applicant: Weatherford Technology Holdings, LLC
Houston, TX 77056 (US)

(72) Inventors:
  • WIEDECKE, Michael
    31020 Salzhemmendorf (DE)
  • THIEMANN, Bjoern
    30938 Burgwedel (DE)
  • HOELTERLING, Carlo
    23611 Bad Schwartau (DE)
  • WERN, Frank
    30655 Hannover (DE)

(74) Representative: Docherty, Andrew John 
Marks & Clerk LLP Aurora 120 Bothwell Street
Glasgow G2 7JS
Glasgow G2 7JS (GB)

   


(54) CONTROL SYSTEM FOR HYDROCARBON RECOVERY TOOLS