(19)
(11) EP 4 232 687 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
08.01.2025 Bulletin 2025/02

(45) Mention of the grant of the patent:
13.11.2024 Bulletin 2024/46

(21) Application number: 21791351.6

(22) Date of filing: 14.10.2021
(51) International Patent Classification (IPC): 
E21B 23/01(2006.01)
E21B 33/138(2006.01)
 E21B 33/12(2006.01)
E21B 27/02(2006.01)
(52) Cooperative Patent Classification (CPC):
E21B 33/138; E21B 33/1208; E21B 23/01; E21B 27/02
(86) International application number:
PCT/EP2021/078391
(87) International publication number:
WO 2022/084128 (28.04.2022 Gazette 2022/17)

(54)

WELL TOOL DEVICE FOR TRANSPORTING A HEAT GENERATING MIXTURE INTO A WELL PIPE

BOHRLOCHWERKZEUGVORRICHTUNG ZUM TRANSPORT EINER WÄRMEERZEUGENDEN MISCHUNG IN EIN BOHRLOCHROHR

DISPOSITIF D'OUTIL DE PUITS POUR LE TRANSPORT D'UN MÉLANGE DE GÉNÉRATION DE CHALEUR DANS UNE CANALISATION DE PUITS

(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: 20.10.2020 NO 20201129

(43) Date of publication of application:
30.08.2023 Bulletin 2023/35

(73) Proprietor: Interwell Norway AS
4089 Hafrsfjord (NO)

(72) Inventor:
  • HIORTH, Espen
    7025 Trondheim (NO)

(74) Representative: Onsagers AS 
P.O. Box 1813 Vika
0123 Oslo
0123 Oslo (NO)


(56) References cited: : 
WO-A1-2010/147476
WO-A1-2019/007589
 WO-A1-2011/037586
GB-A- 2 427 631
   
       
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).