Welding Technology Trend of Duplex Stainless Steels in Oil and Gas Industry Applications

Duplex stainless steels were first manufactured early in the 20th century, but it was the invention of argon oxygen decarburization melting and the addition of nitrogen that made the alloys stronger, more weldable, and more corrosion resistant. Today, there is a family of duplex stainless steels covering a range of compositions and properties, but they all share high strength and good corrosion resistance, especially to stress corrosion cracking, compared with similar austenitic stainless steels. This paper briefly reviews the range of modern duplex stainless steels and why they are widely used in many industries. They are the workhorse corrosion-resistant alloy in the oil and gas industry. In this paper, their use in three industries common in Australia and New Zealand is reviewed: oil and gas, mineral processing, and desalination. The corrosion resistance in the relevant fluids is reviewed and some case histories highlight both successes and potential problems with duplex alloys in these industries.

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Recent Developments of Advanced Austenitic and Duplex Stainless Steels for Oil and Gas Industry

Energy Materials 2014 ◽

10.1002/9781119027973.ch85 ◽

2015 ◽

pp. 703-709

Author(s):

Guocai Chai ◽

Pasi Kangas

Keyword(s):

Stainless Steels ◽

Oil And Gas ◽

Oil And Gas Industry ◽

Duplex Stainless Steels ◽

Gas Industry ◽

Recent Developments

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Multiphase Flow Effects in a Horizontal Oil and Gas Separator

Energies ◽

10.3390/en12112116 ◽

2019 ◽

Vol 12 (11) ◽

pp. 2116 ◽

Cited By ~ 2

Author(s):

Michael Frank ◽

Robin Kamenicky ◽

Dimitris Drikakis ◽

Lee Thomas ◽

Hans Ledin ◽

...

Keyword(s):

Oil And Gas ◽

Petroleum Industry ◽

Oil And Gas Industry ◽

Fluid Mixture ◽

Gas Industry ◽

Liquid Phases ◽

Industry Applications ◽

Computational Fluid Dynamics Cfd ◽

Gas Separator ◽

Flow Effects

An oil and gas separator is a device used in the petroleum industry to separate a fluid mixture into its gaseous and liquid phases. A computational fluid dynamics (CFD) study aiming to identify key design features for optimising the performance of the device, is presented. A multiphase turbulent model is employed to simulate the flow through the separator and identify flow patterns that can impinge on or improve its performance. To verify our assumptions, we consider three different geometries. Recommendations for the design of more cost- and energy-effective separators, are provided. The results are also relevant to broader oil and gas industry applications, as well as applications involving stratified flows through channels.

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Design of replaceable nozzles for connecting pipelines in electron beam welding

Journal of Physics Conference Series ◽

10.1088/1742-6596/2094/4/042015 ◽

2021 ◽

Vol 2094 (4) ◽

pp. 042015

Author(s):

V S Tynchenko ◽

V A Kukartsev ◽

S G Dokshanin ◽

A V Fedorova ◽

V Slinitsyna ◽

...

Keyword(s):

Electron Beam ◽

Welded Joints ◽

Oil And Gas ◽

Electron Beam Welding ◽

Oil And Gas Industry ◽

Gas Industry ◽

Advantages And Disadvantages ◽

Welding Technology ◽

Welded Seam

Abstract The article is devoted to the use of electron beam welding for connecting pipelines in the oil and gas industry. The analysis of the proposed approach and equipment for creating permanent pipe-flange connections is carried out. The advantages and disadvantages of the proposed approach are considered. During the work, the welded seam was calculated. A set of interchangeable attachments for the turntable has also been developed. Thus, the purpose of this work is to improve the quality of welded joints of oil and gas equipment through the use of electron-beam welding technology and design of replaceable nozzles for a turntable for an electron-beam welding unit.

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