Drilling Bits Types In Oil And Gas Rigs
All types of drilling bits used in oil and gas have seen perhaps more technological advancements over the past years than any other type of drilling equipment. These advancements include such items as:

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- Development of the roller cone bit
- Multiple cone and jet arrangements in roller bits
- Cone lubrication methods
- Diamond bit drilling and coring procedures
- Polycrystalline (PDC)
https://www.drillingmanual.com/types-of-drilling-bits/