Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Nobuyuki Hisamune"'
Autor:
Ali Mirzaee-Sisan, Nobuyuki Hisamune, Masahiko Hamada, Ajit Bastola, Hidenori Shitamoto, Junkan Wang
Publikováno v:
Engineering Fracture Mechanics. 180:348-365
An experimental and numerical study has been carried out on the strain capacity of girth-welded X80 pipes subject to displacement-controlled conditions. The focus of this research is fracture limit state. This paper contains details of small-scale an
Autor:
Nobuyuki Hisamune, Ajit Bastola, Ali Mirzaee-Sisan, Junkan Wang, Masahiko Hamada, Hidenori Shitamoto
Publikováno v:
Procedia Structural Integrity. 2:1894-1903
Application of high-strength steels such as X80 grade may help reduce cost in offshore pipeline projects through wall thickness optimisation and associated installation costs. To ensure reliability of such application during the pipeline installation
Autor:
Masayuki Sagara, Hisashi Amaya, Yuuki Watatani, Nobuyuki Hisamune, Hidenori Shitamoto, Daisuke Motoya
Publikováno v:
Volume 6A: Pipeline and Riser Technology.
Corrosion resistant alloys (CRAs) such as martensitic and duplex stainless steels (DSS) are used as a flow line material in corrosive wet gas environments (i.e., carbon dioxide and hydrogen sulfide environments). A new DSS which consists of 25mass%Cr
Publikováno v:
Volume 3: Materials Technology; Ocean Space Utilization.
Offshore flowlines are subject to large thermal transients particularly during shut down. These thermal transients tend to vary from about 200°F to ambient temperature and place a large fatigue demand on the pipelines. The transients typically are v
Publikováno v:
Volume 4A: Pipeline and Riser Technology.
Engineering critical assessments (ECA) have increasingly become a routine part of pipeline design to determine tolerable flaw sizes for weld defects. These assessments are now being applied to pipeline systems in deeper water with increased loadings
Autor:
Nobuyuki Hisamune, Hidenori Shitamoto
Publikováno v:
Volume 4A: Pipeline and Riser Technology.
There are several methods currently being used to install offshore oil and gas pipelines. The reel-lay process is fast and one of the most effective offshore pipeline installation methods for seamless, ERW, and UOE line pipes with outside diameters o
Autor:
Hiroyuki Nagayama, Nobuyuki Hisamune, Mark F. Mruczek, Tetsuya Fukuba, Mark Vickers, Masahiko Hamada, Jun Nakamura
Publikováno v:
All Days.
Abstract With the increasing strong demand for the development of oil and gas fields in ultra-deepwater, offshore applications with higher strength are required for the reduction of construction costs. Riser system costs are particularly sensitive to
Publikováno v:
Materia Japan. 42:236-238
Autor:
Hiroyuki Nagayama, Nobuyuki Hisamune, Tetsuya Fukuba, Mark Vickers, Masahiko Hamada, Mark F. Mruczek, Archie Arredondo
Publikováno v:
Volume 3: Materials and Joining.
Ultra-high strength seamless pipes of X90 and X100 grades have been developed for deepwater or ultra-deepwater applications. Girth welding procedure specifications (WPSs) should be developed for the ultra-high strength pipes. However, there is little
Autor:
Keisuke Hitoshio, Tsuneo Murase, Masahiko Hamada, Hiroyuki Hirata, Nobuyuki Hisamune, Kunio Kondo, Yuji Arai
Publikováno v:
2008 7th International Pipeline Conference, Volume 3.
This paper describes the development of high strength heavy wall seamless pipes of X80 to X100 grade for ultra-deep water application. Steel pipes with higher strength generally tend to have low fracture toughness either in pipe body or in weld joint