Session: Next-Generation Coatings: Predictive Strategies for Service Life, Durability, and Sustainable Performance
Non-Stick Behavior of Diamond-Like Carbon and Polymer-based Coatings against Asphaltene and Petroleum Wax Deposits (C2026-00118)
Tuesday, March 17, 2026
1:30 PM - 2:00 PM Central
Location: 372 BC
Earn .5 PDH
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Virendra Singh, Alireza Zolfaghari, Manuel Marya, Vipul shinde
Asphaltene and wax deposition present persistent flow assurance challenges in crude oil production, transport, and storage. These high-molecular-weight compounds precipitate due to changes in pressure, temperature, and composition, forming solid deposits that obstruct flowlines and equipment, reducing operational efficiency. Asphaltenes strongly adhere to metal surfaces, making removal difficult, while paraffinic waxes crystallize under low temperatures, compounding flow restrictions. This study explores advanced surface coatings as a sustainable solution to mitigate such deposits. Diamond-like carbon (DLC) and fluoropolymer-based coatings, combined with varied surface finishes, were evaluated for their ability to reduce surface energy and friction, thereby minimizing organic adhesion. Coated and uncoated substrates were exposed to asphaltene and wax deposition. Non-stick performance was assessed using pull-off and shear adhesion tests, along with deposit mass gain analysis at elevated temperatures. Results identified coatings with superior anti-fouling properties, correlating their performance to hydrophobicity and low friction. DLC coatings, in particular, demonstrated enhanced smoothness, chemical resistance, and reduced deposition. These findings support the use of engineered surfaces to improve flow assurance and reduce maintenance in hydrocarbon systems.
