1. Damaged drill pipe: 1. In most cases, the fracture of the drill pipe belongs to the friction between the drill pipe and the hole wall, so that the wall thickness of the drill pipe is reduced, and the strength is too weak to cause the dri ...
Drilling is the use of mechanical equipment to drill holes in the formation. According to the rock breaking method and the type of drilling tool, it can be divided into drilling technology and rotary drilling technology. In geological explo ...
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