(19)
(11) EP 3 022 389 A1

(12)

(43) Date of publication:
25.05.2016 Bulletin 2016/21

(21) Application number: 14825591.2

(22) Date of filing: 17.07.2014
(51) International Patent Classification (IPC): 
E21B 43/12(2006.01)
F04B 47/06(2006.01)
(86) International application number:
PCT/US2014/047004
(87) International publication number:
WO 2015/009917 (22.01.2015 Gazette 2015/03)
(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: 17.07.2013 US 201361847382 P
16.07.2014 US 201414333090

(71) Applicant: Baker Hughes Incorporated
Houston, TX 77210-4740 (US)

(72) Inventors:
  • PYRON, Steven W.
    Tulsa, OK 74135 (US)
  • BIERIG, Kevin R.
    Tulsa, OK 74128 (US)

(74) Representative: Davies, Christopher Robert 
Dehns St Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)

   


(54) LABYRINTH CHAMBER WITH HELICAL BLADE FOR A SUBMERSIBLE WELL PUMP AND METHOD OF USE