Oil drill collar is an important tool in oil drilling, drill collars the most lower in drill string, located in the drill pipe and drill, is between the main component of downhole assembly. With the increasingly serious shortage of petroleum production environment, worsening drill collars must improve performance to meet current drilling requirements. Aiming at the characteristics of drill collar job, find out the quality of influence drill collars key factors, and connecting with the practice, through the research drill collars heat treatment process equipment and process methods, and drill collars heat treatment process equipment and process improvement, make our company produces the petroleum drill collars currently mining to environmental requirements. |