Advanced liquid epoxy and polyurethane materials: internal and external coatings for pipeline and tubing protection

Andrey Keresten,Stepan Ostanin,Vyacheslav Zuev,A Groysman,A.D Davydov,A.B Laptev,A.A Alkhimenko,A.I Zhitenev,M.A Kovalev,A.A Kazakov,A.A Kharkov,V.A Polyansky,B.S Ermakov,N.O Shaposhnikov,D.A Strekalovskaya,I.A Golubev,R.K Vagapov,O.V Shvetsov,E.L Alekseeva

doi:10.1051/e3sconf/202122505004

Abstract

The paper discusses anticorrosive materials developed by JSC “СRONOS SPb” for different application for oil/gas industry. A series of coatings were tested for compliance with industrial Russian and international standards. Epoxy KronEpur 80 and KronEpur NKT coatings for the internal surfaces of pipelines and tubing with high Tg comply with Russian state standard GOST 58346. KronTag developed for RFID tags protection meet the requirements for internal coatings according GOST 58346. Hybrid epoxy-urethane coating Eton-SAP has extremely low operational thickness. Repairing material Polykron-R tested by DIN EN 10290.

Highlights

One of the most significant factors that affect the technical condition of oil and gas equipment is corrosion [1]
The results show the compliance of KronEpur 80 and KronEpur NKT with GOST 583462019 ‘Steel pipes and fittings for oil industry
Designed for Radio Frequency Identification (RFID) tags protection KronTag coating was tested for compliance with GOST R 58346-2019

Summary

Introduction

One of the most significant factors that affect the technical condition of oil and gas equipment is corrosion [1]. Valves and fittings is achieved, by the application of protective anticorrosive coatings [2]. The main types used for buried or submerged pipelines are liquid paint coatings (epoxy or polyurethanes (PU)), extrusion-applied triple layer coatings with epoxy powder and two layers of polyethylene or polypropylene, plastic tape coatings (PVC, polyester or polyethylene) and polyurethane foam coatings (which provide corrosion protection with thermal insulation). Each approach have their advantages and disadvantages. A pair of modified liquid epoxy materials for internal anticorrosive coatings of pipes and tubings were designed. Special coating for protection of Radio Frequency Identification (RFID) tags was tested

Liquid epoxy coatings

Hybrid epoxy-urethane coatings

Epoxy-urethane coating for RFID tags protection

PU coating of manual application

Conclusion