(19)
(11) EP 2 585 680 A1

(12)

(43) Date of publication:
01.05.2013 Bulletin 2013/18

(21) Application number: 11797684.5

(22) Date of filing: 20.06.2011
(51) International Patent Classification (IPC): 
E21B 43/01(2006.01)
E21B 43/12(2006.01)
F04D 29/10(2006.01)
 B63C 11/00(2006.01)
F04B 53/16(2006.01)
F16J 15/40(2006.01)
(86) International application number:
PCT/IB2011/001391
(87) International publication number:
WO 2011/161517 (29.12.2011 Gazette 2011/52)
(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

(30) Priority: 22.06.2010 NO 20100903

(71) Applicant: Vetco Gray Scandinavia AS
722 13 Västerås (SE)

(72) Inventor:
  • KJØNIGSEN, Tom
    N-3070 Sande (NO)

   


(54) DIFFERENTIAL PRESSURE CONTROLLED MOTOR AND PUMP BARRIER FLUIDS PRESSURE REGULATION SYSTEM