The wear-resistant belt is a wear-resistant isolation belt with a certain width and thickness formed by overlay welding on a drill pipe or a drill pipe joint. The drill pipe wear belt protects the drill pipe and casing from strong wear due to its certain wear resistance. It has been widely used in deep well drilling, extended reach drilling and highly deviated well-drilling engineering, and the wear-resistant belt technology has become one of the necessary technical conditions for bidders to win bids for major international petroleum engineering projects. Drill pipe supplier China shares with you.
The wear-resistant belt of petroleum drill pipe joint wear-resistant belt is a wear-resistant isolation belt with a certain width and thickness formed on the drill pipe or drill pipe joint by overlay welding. The drill pipe wear belt protects the drill pipe and casing from strong wear due to its certain wear resistance. It has been widely used in deep well drilling, extended reach drilling and highly deviated well-drilling engineering, and the wear-resistant belt technology has become one of the necessary technical conditions for bidders to win bids for major international petroleum engineering projects.
First, the working principle of the wear-resistant belt of petroleum drill pipe joints The wear-resistant belt of drill pipe joints is essentially an isolation belt with a certain width and thickness along the circumferential direction of the joint. What are the wear-resisting factors of petroleum drills that affect the wear resistance of petroleum drill pipes? Welding metal wear-resistant bands on rod joints are one of the effective measures to reduce the wear of drill pipes and casings. Through this isolation belt, the outer wall of the drill pipe joint is isolated from the casing wall or the well wall, and the drill pipe joint is prevented from directly contacting the casing wall or the well wall, so as to protect the drill pipe joint and the casing from strong abrasion.
Second, Factors affecting the performance of drill pipe wear belts
1.Material characteristics of wear belt and casing (or well wall)
The friction coefficient mainly depends on the surface characteristics of the friction pair material, and the surface characteristics of the friction pair are stable, and the friction coefficient is less affected by the load. For the friction pair formed by drill pipe and casing steel, it is relatively easy to form an adsorption film between them. When positive pressure is applied, as the adsorption film is gradually destroyed, the surface characteristics of the friction pair contribute more and more to the formation of friction coefficient The coefficient of friction is greatly affected by the load. Any material characteristic that increases the coefficient of friction will exacerbate the occurrence of wear.
2.Friction coefficient
Any factor that increases the friction coefficient between the drill pipe joint and the inner wall of the casing will aggravate the wear. If the type or amount of lubricant is not suitable, the rotating speed of the turntable is increased, and the temperature is too high or too low, the wear phenomenon will also increase.
3.Loading force
Any factor that increases the contact force between the drill pipe joint and the inner wall (or well wall) of the casing will aggravate the wear.
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