Multi-functional Flow Assurance Chemicals: Corrosion and Kinetic Hydrate Inhibition from Maleic Anhydride:<i>N</i>-Vinyl Caprolactam Copolymers and Synergists
نویسندگان
چکیده
Water-based flow assurance issues include corrosion, scale, and gas hydrate formation. Chemical solutions to mitigate these usually require separate inhibitors, which sometimes can lead compatibility difficulties. Herein, we report studies on maleic-based copolymers combat corrosion with a view optimizing for scale inhibition also. The product of maleic anhydride:N-vinyl caprolactam copolymer reacted 3-dibutylaminopropylamine (MA:VCap-DBAPA) its amine oxide derivative (MA:VCap-DBAPA-AO) were the kinetic inhibitor (KHI) polymers investigated. Due limited CO2 (CI) by alone, various oxygen-, sulfur-, nitrogen-based additives screened improved CI possible KHI synergy. performance screening tests conducted under high pressure structure II-forming natural mixture in steel rocking cells using slow (1 °C/h) constant cooling method. was measured linear polarization resistance stirred 1 L bubble test apparatus C1018 coupons 3.6 wt % brine at 20.5 °C. Several sulfur-based efficiency polymers, especially butyl thioglycolate 2-aminoethanethiol, without negative effect performance. For example, 2500 ppm MA:VCap-DBAPA plus 1000 gave an average onset temperature (To) 4.4 °C (12.7 below To no additive) 99.7% efficiency. In contrast classic fatty acid imidazoline surfactant inhibitor, also found greatly enhance industrial KHIs, poly(N-vinyl caprolactam) (PVCap) N-vinyl pyrrolidone:N-vinyl copolymer, antagonism polymer. addition, boosted PVCap. use small synergists such as avoids classical inhibitors tighter emulsions poor overboard oil-in-water quality.
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ژورنال
عنوان ژورنال: Energy & Fuels
سال: 2023
ISSN: ['1520-5029', '0887-0624']
DOI: https://doi.org/10.1021/acs.energyfuels.3c00991