油田采出水中缓蚀剂与阻垢剂的配伍性研究

王素芳, 李志元, 徐慧, 于晓薇

现代化工 ›› 2021, Vol. 41 ›› Issue (6) : 197 -200.

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现代化工 ›› 2021, Vol. 41 ›› Issue (6) : 197-200. DOI: 10.16606/j.cnki.issn0253-4320.2021.06.040
科研与开发

油田采出水中缓蚀剂与阻垢剂的配伍性研究

    王素芳, 李志元, 徐慧, 于晓薇
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Compatibility between corrosion inhibitor and scale inhibitor in oilfield produced water

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摘要

考察了两性和阳离子咪唑啉缓蚀剂与阻垢剂ATMP和AMPS共聚物在1.5%和15%矿化度的模拟配水水质中的浊度、中和电荷浓度、阻垢率和腐蚀速率。结果表明,两性咪唑啉缓蚀剂与阻垢剂的质量浓度比[C(缓蚀剂)/C(阻垢剂)=1:0.5~1:4]范围相比阳离子([C(缓蚀剂)/C(阻垢剂)=1:0.5)的范围更大;配伍性主要是由于药剂之间发生电中和,中和后电性变化范围小,浊度降低,缓蚀性能和阻垢性能良好,对缓蚀剂性能还会起到协同增效作用;而电中和后电性变化大,易导致浊度增加,药剂自身的缓蚀和阻垢性能均下降,表现出不配伍。

Abstract

The turbidity,neutralization charge concentration,scale inhibition rate and corrosion inhibition rate of amphoteric imidazoline corrosion inhibitor,cationic imidazoline corrosion inhibitor,ATMP scale inhibitor and AMPS scale inhibitor that respectively match into different corrosion inhibitor-scale inhibitor pairs in simulated water samples with salinities of 1.5% and 15%,respectively are investigated.It is shown that the mass concentration ratio of amphoteric imidazoline corrosion inhibitor to scale inhibitor can be changed in a range of 1∶0.5-1∶4,which is wider than that of cationic corrosion inhibitor to scale inhibitor,which is 1∶0.5.Good compatibility is mainly contributed by electrical neutralization between corrosion inhibitor and scale inhibitor.Electrical changes range after neutralization narrows.The lower the turbidity,the better the corrosion inhibition performance and scale inhibition performance.Good compatibility will also play a synergistic effect on the performance of the corrosion inhibitor.If electrical property changes greatly after electrical neutralization,which will easily lead to an increase in turbidity,and both the corrosion inhibition and scale inhibition performance of the agents themselves will decrease,showing incompatibility.

关键词

缓蚀剂 / 电性中和 / 配伍性 / 阻垢剂

Key words

corrosion inhibitor / electrical neutralization / compatibility / scale inhibitor

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油田采出水中缓蚀剂与阻垢剂的配伍性研究[J]. 现代化工, 2021, 41(6): 197-200 DOI:10.16606/j.cnki.issn0253-4320.2021.06.040

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