Numerical Post-Buckling Analysis of Mechanically Lined Corrosion Resistant Alloy Pipes

2017 ◽  
Vol 140 (1) ◽  
Author(s):  
Jiansha Dong ◽  
Fahrettin Ozturk ◽  
Firas Jarrar ◽  
Jamal Y. Sheikh-Ahmad
Keyword(s):  
Contact Pressure ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Buckling Analysis ◽  
Gas Industry ◽  
Corrosion Resistant ◽  
Finite Element Software ◽  
Resistant Alloy ◽  
Post Buckling ◽  
Corrosion Resistant Alloy

As an economical alternative to solid corrosion resistant alloy (CRA) and clad pipes, mechanically lined or sleeved CRA pipes are proven to be effective in the transport of corrosive fluids in oil and gas industry. A major issue with these pipes is that pressure drop or fluctuations may cause buckling of the liner, resulting in irreparable and costly damage. This issue should be resolved in order to fully implement this type of pipes in oil and gas industry. In this study, post-buckling analysis of liner pipe encased in carbon steel outer pipe is carried out following the hydraulic expansion manufacturing process. Commercially available abaqus finite element software is employed. The proposed model is partly verified with an analytical solution and other numerical results under the condition of no residual contact pressure. Results of the parametric study reveal that increasing the residual contact pressure and decreasing the magnitude of geometric imperfection can both contribute to enhancing the buckling resistance.

Duplex Stainless Steels: The Versatile Alloys

CORROSION ◽  
10.5006/3403 ◽  
2019 ◽  
Vol 76 (5) ◽  
pp. 500-510
Author(s):  
Roger Francis
Keyword(s):  
Corrosion Resistance ◽  
Stainless Steels ◽  
Oil And Gas ◽  
Austenitic Stainless Steels ◽  
High Strength ◽  
Oil And Gas Industry ◽  
Duplex Stainless Steels ◽  
Gas Industry ◽  
Corrosion Resistant ◽  
Corrosion Resistant Alloy

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.

Corrosion-Resistant Alloys for Tubings and Casings and Alloy Material Selection in Oil and Gas Wells

2013 ◽  
Vol 690-693 ◽  
pp. 276-279
Author(s):  
Ling Feng Li
Keyword(s):  
Oil And Gas ◽  
Material Selection ◽  
Influence Factors ◽  
Gas Wells ◽  
Corrosion Resistant ◽  
Resistant Alloy ◽  
Alloy Material ◽  
Oil And Gas Wells ◽  
Corrosion Resistant Alloy ◽  
Selection For

This paper presents the technology background, the types and basic compositions of corrosion-resistant alloys for tubings and casings in oil and gas wells, modes of corrosion and influence factors for corrosion-resistant alloy, corrosion-resistant alloys material selection for tubings and casings in oil and gas wells. And the technology above has a good practicality for application .

Analysis of Contact Pressure of Mechanically Lined Corrosion Resistant Alloy Pipe by Hydraulic Expansion Process

2017 ◽  
Vol 139 (2) ◽  
Author(s):  
Tianye Guo ◽  
Fahrettin Ozturk ◽  
Firas Jarrar ◽  
Jamal Y. Sheikh-Ahmad
Keyword(s):  
Finite Element ◽  
Contact Pressure ◽  
Manufacturing Process ◽  
Element Model ◽  
Experimental Results ◽  
Hydraulic Pressure ◽  
Corrosion Resistant ◽  
Resistant Alloy ◽  
Good Accord ◽  
Corrosion Resistant Alloy

In this present study, an improved theoretical model is developed to analyze the manufacturing process of a mechanically lined corrosion resistant alloy (CRA) pipe by a hydraulic expansion. The formula of the relationship between the applied hydraulic pressure and the resulting residual interfacial pressure between the inner liner and outer pipes for the mechanically lined CRA pipe is obtained. The minimum and maximum critical hydraulic pressures are also investigated and an effective forming pressure ranges is found. A 2D axisymmetric finite-element model is built in abaqus™ to simulate the mechanically lined CRA pipe during the hydraulic expansion manufacturing process. The analytical and simulation results are compared with the experimental results found in the literature, which reveals that the theoretically calculated residual contact pressure and the finite-element computed results are in good accord with the experimental results. Therefore, the models built in this paper can be applied in actual manufacturing process of mechanically lined CRA pipes.

Microstructure and Room Temperature Mechanical Properties of a New Corrosion-Resistant Alloy GH945 for Oil and Gas Applications

2016 ◽  
Vol 849 ◽  
pp. 609-617
Author(s):  
Zhao Xia Shi ◽  
Xiao Feng Yan ◽  
Chun Hua Duan
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Impact Toughness ◽  
Oil And Gas ◽  
High Strength ◽  
Corrosion Resistant ◽  
Σ Phase ◽  
Resistant Alloy ◽  
Corrosion Resistant Alloy ◽  
Type Carbide

The microstructure and mechanical properties of a new corrosion-resistant alloy GH945 with high strength for oil and gas production were studied in this paper. The results showed that the main precipitations of GH945 alloy after solution heat treatment and two-stage age hardening treatment were γ′ and γ′′ phase, MC-type carbide, σ phase and M23C6-type carbide. The increase of primary aging temperature not only promoted the precipitation of σ phase and film of continuous M23C6 carbide on the grain boundary, but also led to the coarsening of γ′ and γ′′ phase, which resulted in the decrease of yield strength and impact toughness. Alloy with high Nb content had high strength but low impact toughness. The following heat treatment was preferably used to obtain the combination of high strength and excellent ductility and toughness for GH945 alloy: 1010 °C/70 min, WQ+ 735 °C/9 h + FC to 615 °C/18 h, AC.

scholarly journals Corrosion-resistant alloy testing and selection for oil and gas production

2017 ◽  
Vol 53 (sup1) ◽  
pp. 75-89 ◽  
Author(s):  
Narasi Sridhar ◽  
Ramgopal Thodla ◽  
Feng Gui ◽  
Liu Cao ◽  
Andre Anderko
Keyword(s):  
Oil And Gas ◽  
Gas Production ◽  
Oil And Gas Production ◽  
Corrosion Resistant ◽  
Resistant Alloy ◽  
Corrosion Resistant Alloy ◽  
Selection For

scholarly journals Tribological Exploration on Pigging System using Computational Simulation

2020 ◽  
Vol 9 (3) ◽  
pp. 2722-2725
Keyword(s):  
Contact Pressure ◽  
Oil And Gas ◽  
Normal Load ◽  
Computational Simulation ◽  
Analytical Calculation ◽  
Oil And Gas Industry ◽  
Wear Volume ◽  
Gas Industry ◽  
Pipeline Inspection ◽  
Pipeline Wall

Pipeline inspection gauge or known as PIG basically a device which is inserted into a pipeline with the purpose of cleaning or inspecting the pipeline for example in oil and gas industry. Pipeline pigging enhances the flow rate and corrosion control in the pipeline. During operation, the PIG is subjected to frictions and wear that occur between the sealing disc and the pipeline wall. The objective of this study is to simulate the contact pressure between the PIG sealing disc and the inner pipeline during pigging process. Other than that, the study is conducted to calculate the wear volume on the PIG sealing disc as the distance of pigging operation increase. The simulation is performed using COMSOL Multiphysics 5.3. The analytical calculation implemented Archard’s law formula. The result showed the higher the normal load applied to the PIG sealing disc, the higher the contact pressure between the sealing disc and the pipeline. Next, when the PIG travel through a pipeline with normal load applied, the volume loss of PIG sealing disc is increasing. As a conclusion, when the PIG is travel through a pipeline during pigging, the PIG is subjected to various conditions such as friction and wears which can affect the pigging performance.

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