High-temperature motor oil composition and preparation method thereof

By combining base oils and additives in a specific ratio, high-temperature motor oils are prepared, solving the problems of lubrication and oxidation resistance in high-temperature environments. This results in a high-flash-point and low-cost high-temperature motor oil composition suitable for high-temperature electric submersible pumps.

CN121950385APending Publication Date: 2026-05-01PETROCHINA CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PETROCHINA CO LTD
Filing Date
2024-10-30
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Existing high-temperature motor oils have poor stability in high-temperature environments, making it difficult to meet the lubrication and anti-oxidation requirements of high-temperature electric submersible pumps. They are particularly prone to decomposition when bearings generate heat through friction, and they are also costly.

Method used

A high-temperature motor oil composition is prepared by mixing synthetic esters, ethyl silicone oil and chlorofluorocarbon oil in a specific ratio as base oils, and adding thickeners, ashless anti-wear agents, antioxidants, corrosion and rust inhibitors and antifoaming agents through a specific process.

Benefits of technology

It achieves a high flash point, excellent oxidation resistance and good low-temperature starting performance, reducing costs, while maintaining stability and lubrication performance at high temperatures, making it suitable for a wide range of applications in high-temperature motor oils.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention belongs to the technical field of high-temperature motor lubricating oil, and discloses a high-temperature motor oil composition and a preparation method thereof. Comprising base oil and additives. The base oil is prepared by mixing synthetic ester, ethyl silicone oil and fluorine-chlorine-carbon oil according to a specific mass ratio of (1-2): (1.5-2.5): (1-2). The high-temperature motor oil composition prepared by the method has the characteristics of high flash point, high insulating property, excellent oxidation resistance, good low-temperature starting performance, relatively low cost and the like, and can meet the oil requirement of a high-temperature motor of a high-temperature electric submersible pump.
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