Anticorrosive coating, preparation method and applications of anticorrosive coating

Abstract

The invention discloses an anticorrosive coating, a preparation method and applications of the anticorrosive coating, wherein the anticorrosive coating comprises an A component and a B component, wherein the mass ratio of the A component to the B component is 100:20-35, and the A component comprises the following components by weight: 35-50 parts of novolac epoxy resin F51; 12-14 parts of xylene; 10-12 parts of 1,4-butanediol diglycidyl ether; 6-8 parts of quartz powder; 7-9 parts of mica powder; 5-8 parts of talc powder; 8-10 parts of titanium dioxide; 1-2 parts of defoaming agent dimethyl silicone; and 1-2 parts of coupling agent KH570; and the B component is modified polyether amine-1784. The anticorrosive coating prepared by adopting the technical scheme has the advantages of resistance to wear, resistance to acid and alkali corrosion, and resistance to high temperature and high pressure, and can meet the requirements of corrosion protection of oil drill pipe for exploitation.

Description

technical field [0001] The invention relates to the technical field of anticorrosion, in particular to an anticorrosion coating, its preparation method and its application. Background technique [0002] Drill pipes are often subjected to alternating stresses such as tension, torsion, and bending during use, causing fatigue damage to drill pipes; at the same time, corrosive media such as dissolved oxygen, carbon dioxide, and hydrogen sulfide in drilling mud corrode the inner wall of drill pipes. , The impact and wear of chlorides, carbonates and mud fillers in the formation on the drill pipe will cause serious corrosion damage to the drill pipe. The simultaneous action of stress fatigue and corrosion damage reduces the service life of the drill pipe, which not only increases the drilling cost, but also affects the drilling speed. In severe cases, it will cause resource damage and personal casualties. [0003] At present, there are three main protection measures for drill pip...

AI Technical Summary

Problems solved by technology

[0002] Drill pipes are often subjected to alternating stresses such as tension, torsion, and bending during use, causing fatigue damage to drill pipes; at the same time, corrosive media such as dissolved oxygen, carbon dioxide, and hydrogen sulfide in drilling mud corrode the inner wall of drill pipes. , the impact and wear of chlorides, carbonates and mud fillers in the formation on the drill pipe will cause serious corrosion damage to the drill pipe

The simultaneous action of stress fatigue and corrosion damage reduces the service life of the drill pipe, which not only increases the drilling cost, but also affects the drilling speed. In severe cases, it will cause resource damage and personal casualties