What is the Suitable Environment for a Roller Cone Bit?

Ⅰ. Working principles of the roller cone bit

The roller cone bit breaks the rock under the impact, crushing action, and sliding shear action of the weight on bit and the rotation of the drill string. When the roller cone is working at the bottom of the well, the longitudinal vibration of the bit produces the impact and crushing effect of the cone on the rock. At the same time, the shearing effect caused by the transverse vibration of the cone cuts off the remaining part of the rock between the gear of the bit, making the rocks on the bottom of the well all broken and the borehole is extended. Roller cone bits are more commonly used in petroleum drilling and geological drilling.

Ⅱ. Applicable environment of the roller cone bit

1. Roller cone bit can be resistant to 250°C high temperature with wear-resistant new grease.

2. With high precision metal seal. The metal seal is used as the axial dynamic seal of the bearing by the metal seal ring, and the two high elastic rubber energy supply rings are separated in the palm and the roller seal area as static seals, and the optimized seal compresses the two metal ring sealing surfaces.

3. The roller cone bit can limit the pressure difference and prevent the drilling fluid from entering the all-rubber oil storage bag of the smooth system, which provides an excellent smooth tube for the bearing system.

4. Floating bearing structure of roller cone bit. The floating element is made of new materials with high elasticity, high-temperature resistance and high abrasion resistance, and the surface is treated with a solid smoothing agent. While reducing the relative linear velocity of the bearing pair, it also reduces the temperature rise of the friction surface, which can further improve the bearing life and bearing performance under the conditions of high pressure or high-speed drilling technology.

5. The steel ball locks the roller cone to adapt to high speed.