METAL PIPE FOR OIL WELL AND METHOD OF MANUFACTURING METAL PIPE FOR OIL WELL

Title:

METAL PIPE FOR OIL WELL AND METHOD OF MANUFACTURING METAL PIPE FOR OIL WELL

Document Type and Number:

WIPO Patent Application WO/2022/039131

Kind Code:

A1

Abstract:

A metal pipe for an oil well according to the present disclosure can be fastened with a high torque even when the metal pipe has a large diameter. A metal pipe (1) for an oil well according to the present disclosure comprises a pipe main body (10) including a first end portion (10A) and a second end portion (10B). The pipe main body (10) includes a pin (40) formed to the first end portion (10A) and a box (50) formed to the second end portion (10B). The pin (40) includes a pin contact surface (400) including a male screw portion (41), and the box (50) includes a box contact surface (500) including a female screw portion (51). The metal pipe (1) for an oil well according to the present disclosure further comprises a resin film (100) containing a resin, a solid lubricant powder, and copper phthalocyanine on at least one of the pin contact surface (400) and the box contact surface (500).

Inventors:

ABE TOMOKA (JP)
TOMIYASU KEN (JP)
MATSUMOTO KEISHI (JP)
OCHIAI MAMORU (JP)

Application Number:

PCT/JP2021/029935

Publication Date:

February 24, 2022

Filing Date:

August 16, 2021

Export Citation:

Click for automatic bibliography generation Help

Assignee:

NIPPON STEEL CORP (JP)
DAIZO CORP (JP)
VALLOUREC OIL & GAS FRANCE (FR)

International Classes:

F16L15/04; C08K5/3417; C08L101/00; C10M103/00; C10M107/38; C10M139/00; C10N10/04; C10N10/08; C10N10/10; C10N10/12; C10N30/00; C10N40/02

Domestic Patent References:

WO2018216416A1	2018-11-29
WO2014042144A1	2014-03-20
WO2017047722A1	2017-03-23

Foreign References:

JP2015506445A	2015-03-02
JP2008527249A	2008-07-24
US20100096850A1	2010-04-22
JPH11507678A	1999-07-06

Other References: