Tricone drill bit

3 1/2：

88.9mm

4 5/8：

117.5mm

5 1/2：

139.7mm

Tricone drill bit Microsoft Yahei has been widely used as a tool for drilling rock formations. The significant improvement in drill bit performance directly reduces drilling costs, especially in the past decade, which has made the fastest progress. Service life and penetration rate are two performance indicators that ultimately determine the extent to which a drill bit affects drilling costs. Improving the mechanical penetration rate and service life of drill bits is an effective way to reduce drilling costs. Some data confirm that improvements in drilling speed have a greater impact on reducing drilling costs than improvements in drill bit life. Among them, improvements in drill bit cutting structures are the key to improving the mechanical performance of drill bits. The most direct method for drilling speed. For a long time, people's improvements in cutting structures have mainly focused on the main cutting tooth structure. For example, in terms of cemented carbide tooth structure, people have successively invented wedge-shaped teeth, spoon-shaped teeth, offset spoon-shaped teeth, etc. . In the past ten years, people have gradually realized that the diameter protection structure also has a great impact on the mechanical penetration rate and life of the drill bit. Especially the drill bits used in highly deviated wells and horizontal wells are required to have reasonable diameter protection structures. Many new diameter protection structures have been adopted. It was developed through research and applied to roller cone drill bits and achieved good results
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