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    • 7. 发明申请
    • Nitrogen-containing compounds as corrosion inhibitors
    • 含氮化合物作为腐蚀抑制剂
    • US20050156137A1
    • 2005-07-21
    • US10498074
    • 2002-11-29
    • Kornelis OverkempeWilliam Ernest ParrJohanna Speelman
    • Kornelis OverkempeWilliam Ernest ParrJohanna Speelman
    • C09K8/54C23F11/14C09K3/18
    • C09K8/54C23F11/142C23F11/145E21B41/02
    • The present invention relates to nitrogen-containing hydroxyethyl substituted compounds to be used as corrosion inhibitors for metal surfaces, for example in aqueous systems and in particular in oil-field applications, e.g. in oil or gas wells, and which could be used under sweet-well conditions as well as under sour-well conditions. It may also be used in oil-field acidizing and fracture-acidizing well stimulation treatment. The compounds belong to the group of partly ethoxylated fatty alkylamines, partly ethoxylated alkyletheramines and partly or fully hydroxyethyl substituted alkylamdopropylamines. The corrosion inhibitors have the formula (I) where R is a hydrocarbyl or an acyl group having 14-24 carbon atoms, or the group R′OCH2CH2CH2 where R′ is a hydrocarbyl group with 14-24 carbon atoms; X is hydrogen, C2H4OH or the group Y is hydrogen or C2H4OH and n is 0-3, with the proviso that at least one of the symbols X and Y is C2H4OH, at most one of the symbols X is n is at least one when R is an acyl group, and when R is a hydrocarbyl group or the group R′OCH2CH2CH2 at least one of the symbols X and Y is hydrogen.
    • 本发明涉及用作金属表面的防腐蚀剂的含氮羟乙基取代的化合物,例如在水性体系中,特别是在油田应用中,例如, 在油井或气井中,并且可以在甜井条件以及酸井条件下使用。 它也可用于油田酸化和断裂酸化井刺激处理。 这些化合物属于部分乙氧基化脂肪烷基胺,部分乙氧基化烷基醚胺和部分或完全羟乙基取代的烷基丙二胺的基团。 腐蚀抑制剂具有式(I),其中R是烃基或具有14-24个碳原子的酰基,或基团R'OCH 2 CH 2 CH 2, 其中R'是具有14-24个碳原子的烃基; X是氢,C 2 H 4 OH或基团Y是氢或C 2 H 4 OH,和 n是0-3,条件是符号X和Y中的至少一个是C 2 H 4 OH,符号X中的至多一个是n是 当R为酰基时,至少一个,当R为烃基或R'OCH 2 CH 2 CH 2时,其中R 1,R 2,R 2, 符号X和Y中的至少一个是氢。