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    • 3. 发明授权
    • Combinations of imidazolines and wetting agents as environmentally acceptable corrosion inhibitors
    • 作为环境可接受的腐蚀抑制剂,咪唑啉和润湿剂的组合
    • US06338819B1
    • 2002-01-15
    • US09250595
    • 1999-02-16
    • Thomas G. BragaRichard L. MartinJo Ann McMahonBernardus A. Oude AlinkBenjie T. Outlaw
    • Thomas G. BragaRichard L. MartinJo Ann McMahonBernardus A. Oude AlinkBenjie T. Outlaw
    • C23F1114
    • C23F11/149C23F11/10
    • A method and corrosion inhibitor for inhibiting corrosion of metal equipment in an aqueous medium comprising components selected from the group consisting of Skeletonema costatum, fish, other algae, and a combination thereof. The method comprises incorporating into the medium a corrosion inhibiting amount of a water soluble corrosion inhibitor comprising an N-ethoxy, 2-substituted imidazoline. The N-ethoxy substituent comprises a quantity of ethylene oxide effective to render the imidazoline water soluble. The corrosion inhibitor is rendered more environmentally compatible by shortening the number of carbon atoms in the fatty acid chain at the 2-position of the imidazoline. The fatty acid chain consists essentially about 18 carbon atoms or less, preferably about 10 carbon atoms or less, most preferably from about 6 to about 8 carbon atoms. As the number of carbon atoms in the fatty acid chain is reduced, the efficacy of the corrosion inhibitor is increased by combination with a wetting agent, preferably an ethoxylated alcohol having from about 8 to about 10 carbon atoms.
    • 一种用于抑制水性介质中金属设备腐蚀的方法和腐蚀抑制剂,其包含选自骨骼水泥,鱼,其他藻类及其组合的组分。 该方法包括向该介质中加入腐蚀抑制量的包含N-乙氧基-2-取代咪唑啉的水溶性缓蚀剂。 N-乙氧基取代基包括一定量的有效使咪唑啉水溶解的环氧乙烷。 通过缩短咪唑啉2-位的脂肪酸链中的碳原子数,使腐蚀抑制剂变得更环保。 脂肪酸链基本上由约18个碳原子或更少,优选约10个碳原子或更少,最优选约6-约8个碳原子组成。 随着脂肪酸链中碳原子数的减少,通过与润湿剂(优选约8至约10个碳原子的乙氧基化醇)组合来增加腐蚀抑制剂的功效。
    • 6. 发明授权
    • Method of inhibiting corrosion in a conduit
    • 抑制管道腐蚀的方法
    • US07624805B2
    • 2009-12-01
    • US12345309
    • 2008-12-29
    • Ronald L. HoppeRichard L. MartinMarek K. PakulskiThane D. Schaffer
    • Ronald L. HoppeRichard L. MartinMarek K. PakulskiThane D. Schaffer
    • E21B41/02C09K8/54
    • C09K8/54Y10S166/902Y10S507/934Y10S507/939
    • Corrosive effects arising during oilfield treatment applications are inhibited and/or prevented by introducing into an oil or gas well at least one compound of formula I: wherein: R1 is independently H, —[—CnH2nO—]a—H, or an alkyl group having from 1 to about 24 carbon atoms; R2 is independently H or —[—CnH2nO—]b—H, R3 is independently —[—CH2]c—, or —CdH2d—[—OCnH2n—]e—, R4 is independently H or —[—CnH2nO—]f—H, R5 is independently H or —[—CnH2nO—]g—H, a is from about 1 to about 8; b+f+g is between 0 to about 30; c is from about 1 to 6; d is from about 1 to 6; e is from about 1 to about 8; and n is 2 or 3. Such corrosive effects are especially inhibited in the treatment of sour wells where H2S corrosion is a potential problem as well as conduits used during the treatment of subterranean formations.
    • 在油田处理应用中产生的腐蚀作用通过将至少一种式I化合物引入油或气井中得到抑制和/或防止:其中:R 1独立地为H, - [ - C n H 2n O - ] a H或具有 1至约24个碳原子; R2独立地为H或 - [-CnH2nO-] bH,R3独立地为 - [ - CH2] c-或-CdH2d - [ - OCnH2n-] e-,R4独立地为H或 - [-CnH2nO-] fH,R5 独立地为H或 - [-CnH2nO-] gH,a为约1至约8; b + f + g在0至约30之间; c为约1至6; d为约1至6; e为约1至约8; 并且n为2或3.在H2S腐蚀是潜在问题以及处理地下地层期间使用的导管的酸性井的处理中,这种腐蚀作用特别受到限制。