Polyurethane (PUR) elastomers are widely used in the oil and gas industry. From pipe conveyors to external and field joint coating and repair all the way to cups and discs for in-line inspection and cleaning tools. In offshore and subsea applications, PUR elastomers are used for bend restrictors, bend stiffeners, and buoyancy devices. In the past, attempts to introduce PURs into further applications, e.g., interior pipe coatings, to utilize the extremely high abrasion resistance of polyurethanes were only successful in certain niche applications. Often, the material were not able to withstand the entire temperature range or chemical environment required in oil & gas applications. For pipe coating, the relatively weak adhesion of conventional PURs to metal surfaces prevented widespread use. ROSEN, a technology leader in pipeline inspection developed new High Performance PUR Elastomers for the cups and discs of their in-line tools that would be resistant enough for the strongly developing subsea pipeline market (distances between pig launchers and receivers up to over 1200 km and more. Standard PURs will wear out to quickly for such applications. Meanwhile, this development has led to Pigging discs allowing operating temperatures - 50 to + 135 °C as well as highly acidic and alkaline media, e.g., pure ammonia. A pipe abrasion protection coating with extremely high adhesion to steel. Systems where the excellent material properties of High Performance PUR Elastomers are combined with electronic systems to simultaneously protect valuable assets from harsh environments and from third-party damage. Exactly adjustable visco-elastic damping (rebound resilience) allowing new vibration damping solutions for pipelines and for reciprocating machinery. This presentation will describe details of the material properties and show examples of the success of High Performance PUR Materials in the oil & gas industry.
Novel high performance elastomers for mining, downstream, and pipeline construction applications
2012
15 Seiten, 18 Bilder
Conference paper
English
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