(19)
(11) EP 4 248 059 A1

(12)

(43) Date of publication:
27.09.2023 Bulletin 2023/39

(21) Application number: 21815638.8

(22) Date of filing: 22.11.2021
(51) International Patent Classification (IPC): 
E21B 33/13(2006.01)
 E21B 29/02(2006.01)
(52) Cooperative Patent Classification (CPC):
E21B 33/13
(86) International application number:
PCT/GB2021/053017
(87) International publication number:
WO 2022/106848 (27.05.2022 Gazette 2022/21)
(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: 23.11.2020 GB 202018390
06.08.2021 GB 202111408

(71) Applicant: BiSN Tec Ltd
Birchwood Warrington Cheshire WA3 6DE (GB)

(72) Inventors:
  • CARRAGHER, Paul
    Warrington Cheshire WA3 6DE (GB)
  • DEARMON, Jake
    Warrington Cheshire WA3 6DE (GB)
  • TALAPATRA, Didhiti
    Warrington Cheshire WA3 6DE (GB)

(74) Representative: Forresters IP LLP 
Skygarden Erika-Mann-Straße 11
80636 München
80636 München (DE)

   


(54) SINGLE TRIP ANNULAR SEAL REPAIR METHOD AND ASSOCIATED EQUIPMENT