Mitigating CO2 Corrosion of Natural Gas Steel Pipelines by Thermal Spray Aluminum Coatings

CORROSION ◽  
10.5006/3797 ◽  
2021 ◽  
Author(s):  
Zineb belarbi ◽  
Joseph Tylczak ◽  
Margaret Ziomek-Moroz
Keyword(s):  
Thermal Spray ◽  
Surface Characterization ◽  
Oil And Gas ◽  
Electrochemical Impedance ◽  
Oil And Gas Industry ◽  
Co2 Corrosion ◽  
Gas Industry ◽  
Co2 Partial Pressure ◽  
Aluminum Coatings ◽  
Spray Coatings

Internal pipeline corrosion due to CO2 is a major challenge facing the oil and gas industry. To protect the pipelines and equipment from the ravages of CO2 corrosion, novel sacrificial coatings can be used. The objective of this study was to investigate the corrosion behavior of Al-based alloys as sacrificial coatings to protect pipelines in a CO2-saturated aqueous electrolyte (3.5 wt.% NaCl) at 4 bar CO2 partial pressure (3 barg) and 40 oC. The corrosion resistance of Al-based alloys and thermal spray coatings was evaluated in an electrochemical reaction autoclave using electrochemical methods (potentiodynamic polarization, linear polarization resistance, and electrochemical impedance spectroscopy). Post-corrosion surface characterization was performed by scanning electron microscopy equipped with energy dispersive X-ray spectroscopy. The obtained data show Al-based alloys demonstrated promising protection against CO2 corrosion with no breakaway degradation issues.

scholarly journals Corrosion Control, Prevention and Mitigation in Oil & Gas Industry

2019 ◽  
Vol 9 (2) ◽  
pp. 1568-1572
Keyword(s):  
Oil And Gas ◽  
Continuous Production ◽  
Oil And Gas Industry ◽  
Co2 Corrosion ◽  
Gas Industry ◽  
Well Control ◽  
Material Choice ◽  
Definition Of ◽  
The Impact ◽  
Oil Gas

The impact of corrosion within the refining industry ends up in the failure of components. This failure leads to closing down the plant to scrub the corroded components. Additionally, corrosion normally causes serious environmental issues, namely spills and releases. A vital resource for all those that are concerned within the corrosion management of oil and gas infrastructure, corrosion management within the oil and gas industry provides engineers and designers with the tools and strategies to plan and implement comprehensive corrosion-management programs for oil and gas infrastructures. Control of corrosion is important for continuous production and evading the well control losses. Materials to be used in down hole have to meet certain characteristics to avoid corrosion and provide additional mechanical strenght. It is potential to determine a logical series of steps for material choice, incorporating analysis of the surroundings, corrosion rate calculations, and final material choice based on established limits. Several developments have taken place in refinement the calculation of CO2 corrosion rates. Moreover, the definition of bitter examination has been reviewed and a way wider evaluation of the relevance of varied established and new materials for various service conditions has been created.

Decanethiol as a Corrosion Inhibitor for Carbon Steels Exposed to Aqueous CO2

CORROSION ◽  
10.5006/3233 ◽  
2019 ◽  
Vol 75 (10) ◽  
pp. 1246-1254 ◽  
Author(s):  
Z. Belarbi ◽  
J.M. Dominguez Olivo ◽  
F. Farelas ◽  
M. Singer ◽  
D. Young ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Electrochemical Impedance ◽  
Film Formation ◽  
Oil And Gas Industry ◽  
Carbon Steels ◽  
Inhibition Mechanism ◽  
Gas Industry ◽  
Chemical Inhibitors ◽  
Active Chemical ◽  
Surface Active

Carbon dioxide (CO2) corrosion mitigation is a challenge in the oil and gas industry. In order to decrease the severity of CO2 corrosion of carbon steel pipelines and equipment, different mitigation practices are recommended. One such strategy is the application of surface-active chemical inhibitors. The aim of this research was to evaluate the inhibition effectiveness of decanethiol in a CO2-saturated aqueous electrolyte (1 wt% NaCl). The inhibition properties of decanethiol were evaluated by electrochemical measurements (linear polarization resistance, potentiodynamic sweeps, and electrochemical impedance spectroscopy) and the steel surface was characterized by scanning electron microscopy. The obtained data show that decanethiol can successfully prevent corrosion of carbon steels in a CO2 environment. An inhibition mechanism was also proposed based on adsorption characteristics and inhibitor film formation.

Pitting and CO2 corrosion behavior of oil and gas pipeline welds

2021 ◽  
Vol 63 (11) ◽  
pp. 1018-1024
Author(s):  
Huan Xie ◽  
Xiang Chen ◽  
Yongxin Lu ◽  
Qian Zhang ◽  
Haitao Wang
Keyword(s):  
Corrosion Behavior ◽  
Oil And Gas ◽  
Welded Joint ◽  
Oil And Gas Industry ◽  
Gas Pipeline ◽  
Co2 Corrosion ◽  
Fe Model ◽  
Gas Industry ◽  
Remaining Service Life ◽  
Pit Depth

Abstract A finite element (FE) model is presented in this work that is used to analyze the effect of pitting corrosion on the CO2 corrosion behavior of oil and gas pipeline welds. The FE model contains two parts, i. e., stress calculation of the welded joint using Abaqus software, and of the chemical reaction at the welded joint using COMSOL Multiphysics® software. The effect of transportation pressure, pit depth and welding material on the CO2 corrosion behavior of weld metal was investigated using the FE model. It turned out that the FE model is helpful to instruct the management and to assess the remaining service life prediction of pipelines in the oil and gas industry.

Deployment of Digital NDT Solutions in the Oil and Gas Industry

2020 ◽  
Vol 78 (7) ◽  
pp. 861-868
Author(s):  
Casper Wassink ◽  
Marc Grenier ◽  
Oliver Roy ◽  
Neil Pearson
Keyword(s):  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Gas Industry

What Does Rent Give to Federal Budget (on the Russia's Budget Dependence upon "Oil Dollars")

2004 ◽  
pp. 51-69 ◽  
Author(s):  
E. Sharipova ◽  
I. Tcherkashin
Keyword(s):  
Oil And Gas ◽  
Strong Dependence ◽  
Oil Prices ◽  
Federal Budget ◽  
Oil And Gas Industry ◽  
Gas Industry ◽  
Resource Rent ◽  
Tax Legislation ◽  
Russian Economy ◽  
The Government

Federal tax revenues from the main sectors of the Russian economy after the 1998 crisis are examined in the article. Authors present the structure of revenues from these sectors by main taxes for 1999-2003 and prospects for 2004. Emphasis is given to an increasing dependence of budget on revenues from oil and gas industries. The share of proceeds from these sectors has reached 1/3 of total federal revenues. To explain this fact world oil prices dynamics and changes in tax legislation in Russia are considered. Empirical results show strong dependence of budget revenues on oil prices. The analysis of changes in tax legislation in oil and gas industry shows that the government has managed to redistribute resource rent in favor of the state.

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