Screw Joint Equipped Oil Well Pipe, Method For Producing Oil Well Pipe

Screw Joint Equipped Oil Well Pipe, Method For Producing Oil Well Pipe Connecting Body Which Uses Screw Joint Equipped Oil Well Pipe, And Method For Producing Screw Joint Equipped Oil Well Pipe

Abstract: Provided is a screw joint-equipped oil well pipe which is capable of suppressing shouldering torque, minimizing rusting on the pin contact surface, and attaining excellent seizure resistance without using compound grease. A screw joint-equipped oil well pipe according to the present disclosure is equipped with a pipe main body (10) which includes a first end section (10A) and a second end section (10B). The pipe main body (10) includes a pin (40) formed at the first end section (10A) and a box (50) formed at the second end section (10B). The pin contact surface (400) of the pin (40) is coated with light oil (80). The box contact surface (500) of the box (50) has a solid lubrication film (60) formed thereon.

Patent Information

Application #

Filing Date

23 November 2023

Publication Number

39/2024

Publication Type

INA

Invention Field

MECHANICAL ENGINEERING

Status

Email

Parent Application

Applicants

NIPPON STEEL CORPORATION

6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071