Roller drill bit

Roller drill bit is the most widely used type of drilling bit. When the roller drill bit is in operation, the cutting teeth alternately contact the bottom of the well, resulting in low rock breaking torque, small contact area between the cutting teeth and the bottom of the well, and high specific pressure,
Easy to penetrate into geological formations; The total length of the working blade is large, thus relatively reducing wear and tear. Roller drill bits can adapt to various layers ranging from soft to hard.
According to the number of cones, it can be divided intozublin simplex bit、Three cone drill bitAnd assemble multi cone drill bits. According to the cutting material, it can be divided into steel teeth (milling teeth) and toothed roller bits.
Roller drill bit as a type ofDrillingThe tools for rock formations have been widely used, and the significant improvement in drill bit performance directly reduces drilling costs, especially the fastest progress in the past decade.
The two performance indicators of service life and drilling speed ultimately determine the degree to which the drill bit affects drilling costs. Improve the drill bitMechanical drilling speedAnd the service life is an effective way to reduce drilling costs, as confirmed by data,
The improvement of drilling speed has a greater impact on reducing drilling costs than the improvement of drill bit life, and the improvement of drill bit cutting structure is the most direct method to increase the mechanical drilling speed of the drill bit. For a long time,
People's improvements in cutting structures mainly focus on the main cutting tooth structure, such as incemented carbideIn terms of tooth structure, people have successively invented wedge-shaped teeth, spoon shaped teethTop offSpoon shaped teeth, worn teeth, etc.
People gradually realize that the diameter retaining structure also has a significant impact on the mechanical drilling speed and service life of drill bits, especially in high angle and horizontal wells where reasonable diameter retaining structures are required. Many new diameter retaining structures have been studied
Developed and applied to roller drill bits, it has achieved good results. From drill bit manufacturers and research institutionsThree cone drill bitIt can be seen from the research and application dynamics of the diameter maintaining structure that people are gradually realizing the importance of the diameter maintaining structure for drill bits
Mechanical drilling speed and lifespan have a significant impact, especially indirectional wellThe impact of the drill bit used in horizontal wells is greater, and the newly developed drill bit diameter retaining structure has achieved good results in the application of roller drill bits. Drill bit diameter retaining structure
From passive sizing to active sizing, sizing materials have evolved from lowWear resistant materialThe development of composite materials with high wear resistance has greatly improved the performance of drill bits through the improvement of drill bit diameter retaining structures and materials, further enhancing the performance of drill bits
Mechanical drilling speed and lifespan. There is a certain gap in the research of diameter retaining structures and materials both domestically and internationally. Relevant drill bit research institutions and manufacturers in China should further strengthen their research on diameter retaining structures and materials, especially focusing on the use of diameter retaining structures in drill bits
Research and apply some active diameter retaining structures to further improve the performance of domestic roller drill bits and provide efficient drill bits suitable for new drilling processes for drilling users.

oil drillingThe most commonly used tool in geological drilling is still the roller drill bit. Roller drill bits have the functions of impacting, crushing, and shearing rock formations during rotation, so they can adapt to soft
Various types of medium and hard strata. Especially with the emergence of jet roller bits and long nozzle roller bits, the drilling speed of roller bits has greatly increased, which is a major revolution in the development history of roller bits.
Roller drill bits can be divided into milling (steel teeth) roller drill bits and inlaid (hard alloy teeth embedded on the roller) roller drill bits according to the type of teeth;
According to the number of cones, it can be divided into single cone drill bitsThree cone drill bitAnd assemble multi cone drill bits. The most commonly used and widely used both domestically and internationally isThree cone drill bit.
Product Features
1. Adopting high-strength and high toughnesscemented carbideTeeth have improved their impact resistance and reduced the rate of tooth breakage;
2. The optimized design of the number of tooth rows, teeth, exposed tooth height, and unique alloy tooth shape fully utilizes the cutting ability and cutting speed of the drill bit;
3. AdoptingcirclipLocking the roller cone, capable of withstanding high drilling pressure;
4. The inner hole of the roller cone is welded with wear-resistant alloy to improve the anti bite ability of the bearing;
5. Adopting high saturationNitrile rubberO-shapedsealing ringThe optimized sealing compression has improved the reliability of the bearing seal;
6. Adopting measures to limit pressure difference and preventdrilling fluidenterlubrication systemThe all rubber oil reservoir provides good lubrication for the bearing system and ensures the normal operation of the "O" - shaped sealing ring, improving the working life of the drill bit;
7. Adopting a new type of material that can withstand high temperatures up to 250 ℃ and has low wear and teargreaseImproved the high-temperature resistance of the drill bit sealing lubrication system.
Product advantages：It can withstand high bit pressure when used at regular speeds.