(19)
(11) EP 4 118 298 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:
05.03.2025 Bulletin 2025/10

(45) Mention of the grant of the patent:
29.01.2025 Bulletin 2025/05

(21) Application number: 21711940.3

(22) Date of filing: 09.03.2021
(51) International Patent Classification (IPC): 
E21B 33/14(2006.01)
 E21B 43/10(2006.01)
(52) Cooperative Patent Classification (CPC):
E21B 33/143; E21B 43/101
(86) International application number:
PCT/GB2021/050587
(87) International publication number:
WO 2021/181087 (16.09.2021 Gazette 2021/37)

(54)

DOWNHOLE APPARATUS AND METHODS

BOHRLOCHVORRICHTUNG UND -VERFAHREN

APPAREIL ET PROCÉDÉS DE FOND DE TROU

(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR 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: 10.03.2020 GB 202003477
04.12.2020 GB 202019183

(43) Date of publication of application:
18.01.2023 Bulletin 2023/03

(73) Proprietor: Expro North Sea Limited
Reading, Berkshire RG1 3EU (GB)

(72) Inventors:
  • HORN, Tristam Paul
    Westhill, Aberdeenshire AB32 6BG (GB)
  • BRUCE, Stephen Edmund
    Blairgowrie, Tayside PH10 6QW (GB)
  • SHAND, David Michael
    Banchory, Aberdeenshire AB31 5AH (GB)
  • REYNOLDS, Tyler Rhes
    Magnolia, Texas 77354 (US)

(74) Representative: Lawrie IP Limited 
10 Bothwell Street
Glasgow G2 6LU
Glasgow G2 6LU (GB)


(56) References cited: : 
EP-A2- 2 039 879
WO-A1-91/03620
US-A1- 2003 116 324
 WO-A1-82/01211
WO-A1-92/19840
   
       
    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).