(19)

(11)

EP 4 487 042 A1

(12)

(43) Date of publication: 08.01.2025 Bulletin 2025/02 (21) Application number: 23712997.8 (22) Date of filing: 04.03.2023

(51) International Patent Classification (IPC):  F16L 55/105(2006.01) (52) Cooperative Patent Classification (CPC): F16L 55/105 (86) International application number: PCT/US2023/014551 (87) International publication number: WO 2023/168104 (07.09.2023 Gazette 2023/36)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 04.03.2022 US 202263316773 P 03.03.2023 US 202318178075 (71) Applicant: TDW Delaware, Inc. Wilmington, Delaware 19801 (US)	(72) Inventors: POE, Roger, L. Beggs, OK 74421 (US) MASLEN, Jon Sand Springs, OK 74063 (US) LI, Qi Houston, TX 77066 (US) LANDRETH, Kolton Jenks, OK 74037 (US) (74) Representative: Bewley, Ewan Stuart  InCompass IP Europe Limited 51 Paddock Mead Harlow, Essex CM18 7RR Harlow, Essex CM18 7RR (GB)