(19)

(11)

EP 4 062 029 A1

(12)

(43) Date of publication: 28.09.2022 Bulletin 2022/39 (21) Application number: 20889513.6 (22) Date of filing: 20.11.2020

(51) International Patent Classification (IPC):  E21B 43/27(2006.01) E21B 33/068(2006.01) E21B 33/076(2006.01) (52) Cooperative Patent Classification (CPC): E21B 41/0007; E21B 19/002; E21B 33/076 (86) International application number: PCT/US2020/061534 (87) International publication number: WO 2021/102277 (27.05.2021 Gazette 2021/21)

(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: 22.11.2019 US 201962939271 P (71) Applicant: ConocoPhillips Company Houston, Texas 77079 (US)	(72) Inventors: KVARME, Leif Houston, Texas 77079 (US) SPENCE, John Houston, Texas 77079 (US) HEIGRE, Birger Houston, Texas 77079 (US) (74) Representative: Simpson, Paul Christopher  ConocoPhillips (U.K.) Limited 20th Floor Angel Court London EC2R 7HJ London EC2R 7HJ (GB)