Preservative for marine pipe pigging pressure testing and sealing and production method thereof

Abstract

The invention discloses a preservative for marine pipe pigging pressure testing and sealing and a production method thereof. The preservative comprises 8-35 weight parts of polyhydric alcohol phosphate ester, 25-75 weight parts of clear water, 5-25 weight parts of inorganic compounds, 1-12 weight parts of polymers, 0.5-10 weight parts of sterilization components and 2-10 weight parts of deoxidation components, which are fully stirred and dissolved in a synthesis kettle under normal temperature and are uniformly dissolved for split charging to form a finished product. Inorganic compounds are one or mixtures of more than two of zinc gluconate, sodium gluconate, sodium tripolyphosphate and sodium hexametaphosphate; the polymers are one or mixtures of more than two of polyaspartic acid, polyepoxysuccinic acid, hydrolytic polymaleic anhydride, polyacrylic acid and copolymers; the sterilization components are one or mixtures of more than two of dodecyl dimethyl benzyl ammonium chloride, dodecyl dimethyl benzyl ammonium bromide, tetradecyl benzyl dimethyl ammonium chloride and glutaraldehyde; and the deoxidation components are one or mixtures of more than two of methyl ethyl ketoxime, acetone oxime and sodium sulfite.

Description

technical field [0001] The invention belongs to the technical field of pipeline anticorrosion, in particular to an anticorrosion agent suitable for pigging, pressure testing and sealing of submarine pipelines and a production method thereof. Background technique [0002] As we all know, there is a large amount of petroleum energy stored under the oceans all over the world, and the petroleum energy is transported from the seabed to land or oil tankers through offshore drilling platforms and a large number of shaft transmission pipelines. Since seawater contains a large number of ions that affect corrosion and scaling, such as chloride ions, calcium and magnesium ions, microbial bacteria, dissolved oxygen, etc., they are highly corrosive to submarine shaft pipeline metals (carbon steel and stainless steel). If no protective agent is added, corrosion damage or even corrosion perforation (high chloride ion action in aerobic state) will easily occur during the pressure test and s...

AI Technical Summary

Problems solved by technology

[0003] At present, the preservatives used in my country's offshore shaft pipelines have always relied on imports. Not only are the prices high and the concentration used is high, but also the delivery period is long, usually more than two or three months, which often affects the construction progress of offshore projects.

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