Title:
METAL PIPE FOR OIL WELL
Document Type and Number:
WIPO Patent Application WO/2023/037910
Kind Code:
A1
Abstract:
Provided is a metal pipe for an oil well, the metal pipe comprising a Zn-Ni alloy plated layer having high adhesiveness. A metal pipe for an oil well according to the present disclosure comprises: a pipe body which includes a pin formed on a first end part and including a pin contact surface having a male screw part, and a box formed on a second end part and including a box contact surface having a female screw part; and a Zn-Ni alloy plated layer formed on at least one among the pin contact surface and the box contact surface. The X-ray diffraction intensity of the Zn-Ni alloy plated layer satisfies expression (1). I18/(I18+I36+I54)≥0.60 (1) Here, the X-ray diffraction intensity of 411 and 330, the X-ray diffraction intensity of 442 and 600, and the X-ray diffraction intensity of 552 are substituted, in a unit of cps, for I18, I36, and I54 in expression (1), respectively.
More Like This:
| JPH09317975 | GAS METER CONNECTING JOINT |
| WO/1999/028637 | SEALING THREADED PAIRING |
Inventors:
OSHIMA MASAHIRO (JP)
KIMOTO MASANARI (JP)
ANTOINE ALEXANDRE (FR)
MUNOZ DANIEL (FR)
KIMOTO MASANARI (JP)
ANTOINE ALEXANDRE (FR)
MUNOZ DANIEL (FR)
Application Number:
PCT/JP2022/032244
Publication Date:
March 16, 2023
Filing Date:
August 26, 2022
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
VALLOUREC OIL & GAS FRANCE (FR)
VALLOUREC OIL & GAS FRANCE (FR)
International Classes:
F16L15/04; C23C26/00; E21B17/042
Domestic Patent References:
| WO2019074103A1 | 2019-04-18 | |||
| WO2019044961A1 | 2019-03-07 | |||
| WO2018216416A1 | 2018-11-29 | |||
| WO2018216475A1 | 2018-11-29 | |||
| WO2021166100A1 | 2021-08-26 | |||
| WO2016170031A1 | 2016-10-27 |
Foreign References:
| JP2018513326A | 2018-05-24 | |||
| JP2020029946A | 2020-02-27 |
Attorney, Agent or Firm:
ASCEND IP LAW FIRM (JP)
Download PDF: