(19)
(11) EP 3 698 015 A2

(12)

(88) Date of publication A3:
01.08.2019

(43) Date of publication:
26.08.2020 Bulletin 2020/35

(21) Application number: 18867925.2

(22) Date of filing: 17.10.2018
(51) International Patent Classification (IPC): 
E21B 37/08(2006.01)
E21B 33/13(2006.01)
E21B 43/114(2006.01)
 E21B 21/00(2006.01)
E21B 37/00(2006.01)
(86) International application number:
PCT/NO2018/050247
(87) International publication number:
WO 2019/078728 (25.04.2019 Gazette 2019/17)
(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:
KH MA MD TN

(30) Priority: 17.10.2017 NO 20171650

(71) Applicant: Hydra Systems AS
4098 Tananger (NO)

(72) Inventors:
  • MYHRE, Morten
    4056 Tananger (NO)
  • LARSEN, Arne Gunnar
    4319 Sandnes (NO)
  • ØSTVOLD, Arnold
    4032 Sandnes (NO)

(74) Representative: Håmsø Patentbyrå AS 
P.O. Box 171
4301 Sandnes
4301 Sandnes (NO)

   


(54) A SYSTEM AND METHOD OF CLEANING AN ANNULAR AREA IN A WELL