Tubing coupling is a kind of oil field drilling tool, mainly used for tubing connection. The N80 tubing coupling mainly solves the problem that the existing coupling is easy to be exhausted and broken due to stress concentration.
N80 tubing coupling commonly used casing steel types DZ40, DZ55, DZ753. Usage: It is mainly used to support the well wall during drilling and completion to ensure the normal operation of the whole well after drilling and completion.
The threaded surface of the coupling shall be smooth, with no burrs, tears or other imperfections that may interrupt the thread and affect the strength and tightness of the connection.
