Corrosion-inhibition and paraffin-inhibition agent for high temperature oil well and preparation method thereof

The invention discloses a corrosion-inhibition and paraffin-inhibition agent for a high temperature oil well and a preparation method thereof. The corrosion-inhibition and paraffin-inhibition agent comprises the following components in percent by mass: 10%-25% of an indole quaternary ammonium salt,...

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Main Authors ZHOU SHIJIE, SHI RUI, MOU FEIYUN, CHEN HUAQIANG, HUANG MINGLIANG, ZHAO GUOXIAN, TU DONG, YUE PENG, ZHANG WEI, MA YOULONG
Format Patent
LanguageChinese
English
Published 12.11.2019
Subjects
ADHESIVES
CHEMISTRY
DYES
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
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Summary:The invention discloses a corrosion-inhibition and paraffin-inhibition agent for a high temperature oil well and a preparation method thereof. The corrosion-inhibition and paraffin-inhibition agent comprises the following components in percent by mass: 10%-25% of an indole quaternary ammonium salt, 3%-10% of diphenyl thiourea, 3%-5% of sodium dodecyl benzene sulfonate, 4%-5% of a surfactant, and 30%-80% of a solvent. The preparation method comprises the following steps: step 1, synthesizing the indole quaternary ammonium salt, pouring indole into a three-necked flask, maintaining stirring, dropwise adding benzyl chloride, and performing heating and carrying out a reaction after drop addition is completed to obtain the indole quaternary ammonium salt; and step 2, mixing the indole quaternary ammonium salt, diphenyl thiourea, sodium dodecyl benzene sulfonate, the surfactant and the solvent and performing uniform stirring to obtain the corrosion-inhibition and paraffin-inhibition agent for the high temperature o
Bibliography:Application Number: CN201910751785