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Friction Reduction Coatings For Carbonate Scale Mitigation: A Comparison Of Materials Technologies

Product Number: 51321-16533-SG
Author: Manuel Marya/ Virendra Singh/ Alireza Zolfaghari/ Vipul Shinde
Publication Date: 2021
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Scale deposition is a major flow assurance concern in hydrocarbon production and water processes that can be economically managed with the use of suitable friction reduction coatings. In this investigation, the performance of various polymer composite coatings, among single-layer polymer-inorganic filler coatings, multi-layered coatings, and diamond-like carbon (DLC) coatings have been compared on the bases of friction reduction, hardness, and behaviors towards carbonate scales and water wetting. It is seen that (1) the anti-scaling response can differ profoundly among novel polymer composite coatings and DLC coatings, (2) through additions of small percentages of inorganic fillers, the new polymer composite coatings can be hardened substantially with some unavoidable tradeoffs in anti-scaling and low-frictional behaviors. Further, one among two tested DLC coating has shown surprisingly good anti-scaling behavior despite a limited hydrophobicity. Overall, this investigation has not been able to concurrently improve all desirable coating properties; however, engineering directions for formulating newer coatings have been found and several new coatings are now expected to outperform common oilfield coatings currently in use.

Key words: carbonate scale, coatings, hardness, friction coefficient, polymer, DLC

Scale deposition is a major flow assurance concern in hydrocarbon production and water processes that can be economically managed with the use of suitable friction reduction coatings. In this investigation, the performance of various polymer composite coatings, among single-layer polymer-inorganic filler coatings, multi-layered coatings, and diamond-like carbon (DLC) coatings have been compared on the bases of friction reduction, hardness, and behaviors towards carbonate scales and water wetting. It is seen that (1) the anti-scaling response can differ profoundly among novel polymer composite coatings and DLC coatings, (2) through additions of small percentages of inorganic fillers, the new polymer composite coatings can be hardened substantially with some unavoidable tradeoffs in anti-scaling and low-frictional behaviors. Further, one among two tested DLC coating has shown surprisingly good anti-scaling behavior despite a limited hydrophobicity. Overall, this investigation has not been able to concurrently improve all desirable coating properties; however, engineering directions for formulating newer coatings have been found and several new coatings are now expected to outperform common oilfield coatings currently in use.

Key words: carbonate scale, coatings, hardness, friction coefficient, polymer, DLC

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