Title:
油井及びガス井の仕上げ及び掘削用途用の高強度耐食チュービング、並びにその製造方法
Document Type and Number:
Japanese Patent JP6430374
Kind Code:
B2
Abstract:
A high strength corrosion resistant tubing comprises about 35 to about 55% Ni, about 12 to about 25% Cr, about 0.5 to about 5% Mo, up to about 3% Cu, about 2.1 to about 4.5% Nb, about 0.5 to about 3% Ti, about 0.05 to about 1.0% Al, about 0.005 to about 0.04% C, balance Fe plus incidental impurities and deoxidizers. The composition also satisfies the equation: (Nb−7.75 C)/(Al+Ti)=about 0.5 to about 9. A process for manufacturing the tubing includes: extruding the alloy to form a tubing; cold working the extruded tubing; annealing the cold worked tubing; and applying at least one age hardening step to the annealed tubing. Another process includes extruding the alloy at a temperature of about 2050° F. or less; annealing the extruded tubing; and applying at least one age hardening step to the annealed tubing.
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Inventors:
Sawan, Kumar, Manang
Application Number:
JP2015517253A
Publication Date:
November 28, 2018
Filing Date:
April 12, 2013
Export Citation:
Assignee:
HUNTINGTON ALLOYS CORPORATION
International Classes:
C22C30/02; C22C19/05; C22F1/10; C22F1/16
Domestic Patent References:
| JP2009515053A | ||||
| JP61119641A | ||||
| JP2009024231A | ||||
| JP2009030153A | ||||
| JP2012102375A | ||||
| JP10298682A | ||||
| JP2011503366A | ||||
| JP57104647A |
Other References:
石沢嘉一、外3名,オーステナイト系高合金油井管の機械的性質,鉄と鋼,日本,1986年 2月,Vol.72 No.2,Pgae.85-88
Attorney, Agent or Firm:
Hiroyuki Nagai
Yasukazu Sato
Satoru Asakura
Takaaki Suemori
Hirohito Katsunuma
Yukitaka Nakamura
Mari Asano
Hiroshi Sorimachi
Hakoda Mitsuru
Yasukazu Sato
Satoru Asakura
Takaaki Suemori
Hirohito Katsunuma
Yukitaka Nakamura
Mari Asano
Hiroshi Sorimachi
Hakoda Mitsuru