CASE

Mainly used for external thickening of drill pipe. Its characteristic is that the drill pipe has the same inner diameter, and the drilling fluid flow resistance is small.

The drill pipe joint is an integral part of the drill pipe, which is divided into a male joint and a female joint, and is connected to both ends of the drill pipe body.

Drill pipe is a steel pipe with a thread at the end, which is used to connect the surface equipment of the drilling rig and the drilling and grinding equipment or bottom hole devic