Characterization and Prediction of Chemical Inhibition Performance for Erosion-Corrosion Conditions in Sweet Oil and Gas Production

Hassani, Sh.; Roberts, Kenneth P.; Shirazi, Siamack A.; Shadley, J.R.; Rybicki, E.F.; Joia, Carlos

doi:10.5006/0546

Cited by 16 publications

(12 citation statements)

References 12 publications

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“…The highest E-C rates were obtained at an impacting angle of 45° in all ECAP passes. This result is consistent with the findings reported by the other previous studies [26]. It is reported that the maximum E-C rate were obtained with impact angle ranges from 30° to 50° for a range of materials such as pure iron, 304 stainless steel and aluminum [26][27][28][29].…”

Section: Effect Of Ecap On Erosion-corrosion At Different Impacting Asupporting

confidence: 93%

“…On the other hand, at 45 • the normal and tangential components of the impacting force are equal and the rate of material removal is maximized. In case of pure copper samples, it is found that the impact angle has the major effect on the erosion mechanism of solid particles [26]. Further studies are needed to understand and verify this point.…”

Section: Effect Of Ecap On Erosion-corrosion At Different Sand Concenmentioning

confidence: 98%

“…E-C was studied under various conditions on many materials such as steel, AISI 420 stainless steel, AISI 1020 carbon steel, cast iron, aluminum, and copper alloys [23][24][25][26]. The previous researchers found that the material loss due to E-C is mainly affected by experiment duration, slurry flow velocity, impacting angle, erodent particle size, and solid particles concentration [27][28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Equal Channel Angular Pressing (ECAP) on Erosion-Corrosion of Pure Copper

et al. 2017

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Abstract:During the past few decades, ultrafine-grained materials (UFG) have experienced rapid development. Enhanced mechanical and surface properties, such as strength, ductility and erosioncorrosion (E-C) resistance by refining the grain to ultra-fine/nanometer size has been achieved. The equal channel angular pressing (ECAP) is a popular severe plastic deformation (SPD) method to fabricate UFG bulk materials. In this research, the E-C behavior of commercial annealed pure copper subject to four passes of ECAP have been investigated. Hardness measurement of the copper specimen after four passes of ECAP showed an increase of 200% on the hardness value as compared with annealed condition. Simulated seawater was used as an E-C medium. The effect of different E-C parameters such as time, slurry flow velocity, impact angle, and solid particle concentration on ECAP process is studied. The results showed that ECAP enhances the E-C resistance of copper, and this behavior improves with increasing the pass number. Generally, a 30% rise in resistance to E-C was achieved after four ECAP passes as compared to coarse grain copper for the parameters studied in this work. Optical microscopy was used to examine the microstructure and material removal mechanism of the annealed copper. Scanning electron microscopy (SEM) was used to validate the reduction of grain size due to ECAP process. Furthermore, examination of the surface roughness of the copper at different ECAP passes showed that for the same E-C condition the increment of ECAP passes leads to a smoother surface.

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Section: Effect Of Ecap On Erosion-corrosion At Different Impacting Asupporting

confidence: 93%

Section: Effect Of Ecap On Erosion-corrosion At Different Sand Concenmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Effect of Equal Channel Angular Pressing (ECAP) on Erosion-Corrosion of Pure Copper

et al. 2017

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“…Essa abordagem multidisciplinar para a corrosão por CO 2 , ou seja, o conhecimento da relação entre fluxo e corrosão por CO 2 , é uma necessidade emergente para a indústria do petróleo e, embora, existam muitas pesquisas correlatas, [6][7][8] torna-se necessário buscar uma metodologia de pesquisa aplicada, que reúna os esforços da comunidade científica e contribua de forma significativa para o entendimento da corrosão por CO 2 em condições de fluxo.…”

Section: Introductionunclassified

THE FORMATION OF PROTECTIVE IRON CARBONATE FILMS AND THE CONTROL OF CO₂CORROSION IN TURBULENT FLOW

et al. 2016

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TURBULENT FLOW. The formation of a protective layer of iron carbonate (FeCO 3 ) can reduce the rates of corrosion and prolong the useful life of carbon steel. However, turbulent flow conditions in this layer can easily be damaged and thus compromise the protection of the steel. In this work, will be presented a methodology based on the chemical aspects of the mechanism of formation of iron carbonate layer in a Thin Channel Flow Cell (TCFC). Electrochemical techniques were used to measure the corrosion rate and corrosion potential on the surface of steel API X65 exposed to aqueous solution of 1 wt.% NaCl purged with CO 2 at 2 atm, pH 6.6 and 80°C in turbulent flow conditions. The surfaces and cross sections of the samples were characterized by means of Scanning Electron Microscopy (SEM) and Energy-Dispersive X-ray (EDS) analysis. The results confirm the nucleation and growth of iron carbonate layer: the extension of supersaturation of the solution and the corrosion rate have decreased, and the corrosion potential has increased. The surface analysis showed dense and uniform FeCO 3 layer with c.a. 20 μm thick after 120 hours in turbulent flow conditions. Keywords: iron carbonate (FeCO 3 ); CO 2 corrosion; flow cell. INTRODUÇÃOA corrosão por dióxido de carbono (CO 2 ) é atualmente uma das formas mais estudadas de corrosão na indústria de petróleo e gás. Isto se deve ao fato de que o petróleo bruto e o gás natural são extraídos de poços que contêm diferentes tipos de impurezas, dentre elas o CO 2. Este último, quando dissolvido em água do mar é altamente corrosivo para as tubulações de aço carbono e os equipamentos utilizados no processo.1-3 A grande preocupação com a corrosão por CO 2 na indústria de petróleo e gás esta nas falhas ocasionadas, pois estas podem comprometer a produção de óleo/gás e causar acidentes de proporção catastrófica.No Brasil, o pré-sal inspira novos desafios quando se trata da corrosão por CO 2 . A exploração em poços profundos traz consigo um percentual de CO 2 de até 20% do total dos hidrocarbonetos, valor este muito superior ao encontrado nos campos do pós-sal. 4 Além da sua presença natural na geologia local do campo produtor, o CO 2 pode ser injetado como método de recuperação avançada na produção de petróleo e gás em poços maduros, 5 tanto no pré-sal quanto no pós-sal.Para superar o obstáculo das falhas por corrosão do aço baixo carbono, deve-se considerar o mecanismo de corrosão por CO 2 nas condições da água de formação do produto e também o efeito do seu fluxo durante o transporte, bem como o mecanismo de interação do produto com a parede interna do duto. Essa abordagem multidisciplinar para a corrosão por CO 2 , ou seja, o conhecimento da relação entre fluxo e corrosão por CO 2 , é uma necessidade emergente para a indústria do petróleo e, embora, existam muitas pesquisas correlatas, 6-8 torna-se necessário buscar uma metodologia de pesquisa aplicada, que reúna os esforços da comunidade científica e contribua de forma significativa para o entendimento da corrosão por CO 2 em condiçõe...

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“…), flow velocity, impact angle, slurry composition, tested material, and temperature [13,14]. Various methods, such as slurry pot [6,[15][16][17], flow loop [18][19][20][21], and jet impingement systems [22][23][24][25], have been used to investigate the E-C behavior of materials. In addition to experimental studies, analytical methods for studying E-C behavior are being rapidly developed [26].…”

Section: Introductionmentioning

confidence: 99%

Surface Modelling of Nanostructured Copper Subjected to Erosion-Corrosion

Irfan

Mukras

Al-Mufadi

et al. 2017

Metals

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Abstract:The last decade has witnessed considerable advancements in nanostructured material synthesis and property characterization. However, there still exists some deficiency in the mechanical and surface property characterization of these materials. In this paper, the erosion corrosion (E-C) behavior of nanostructured copper was studied. The nanostructured copper was produced through severe plastic deformation (SPD) by applying four passes of equal channel angular pressing (ECAP). The combined effects of the testing time, impact velocity, and concentration of erosive solid particles (i.e., sand concentration) on the E-C behavior of nanostructured copper were then examined. Based on a defined domain for the testing time, impact velocity, and sand concentration, E-C tests were performed for numerous combinations of test points via the slurry pot method. The test points were selected using the face-centered center composite design of experiments to enable visualization of the test results through surface plots. The extent of E-C on the test specimens was determined by measuring the mass loss. Polynomial regression and Kriging were used to fit surfaces to the experimental data, which were subsequently used to generate surface plots. The results showed that the E-C of nanostructured copper is best described by a quadratic function of testing time, velocity, and erosive solid particle concentration. The results also revealed that E-C increases with an increasing testing time, impact velocity, and erosive solid particle concentration. In addition, it was observed that the effect of the erosive solid particles on E-C is further intensified by an increased impact velocity.

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Characterization and Prediction of Chemical Inhibition Performance for Erosion-Corrosion Conditions in Sweet Oil and Gas Production

Cited by 16 publications

References 12 publications

Effect of Equal Channel Angular Pressing (ECAP) on Erosion-Corrosion of Pure Copper

Effect of Equal Channel Angular Pressing (ECAP) on Erosion-Corrosion of Pure Copper

THE FORMATION OF PROTECTIVE IRON CARBONATE FILMS AND THE CONTROL OF CO₂CORROSION IN TURBULENT FLOW

Surface Modelling of Nanostructured Copper Subjected to Erosion-Corrosion

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Characterization and Prediction of Chemical Inhibition Performance for Erosion-Corrosion Conditions in Sweet Oil and Gas Production

Cited by 16 publications

References 12 publications

Effect of Equal Channel Angular Pressing (ECAP) on Erosion-Corrosion of Pure Copper

Effect of Equal Channel Angular Pressing (ECAP) on Erosion-Corrosion of Pure Copper

THE FORMATION OF PROTECTIVE IRON CARBONATE FILMS AND THE CONTROL OF CO2CORROSION IN TURBULENT FLOW

Surface Modelling of Nanostructured Copper Subjected to Erosion-Corrosion

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THE FORMATION OF PROTECTIVE IRON CARBONATE FILMS AND THE CONTROL OF CO₂CORROSION IN TURBULENT FLOW