Corrosion Behavior of Pipeline Steel in Oilfield Produced Water under Dynamic Corrosion System

Jie, Zhao; Liu, Yida; Yang, Xiaoyu; He, Xin; Wang, Lei; Xiong, Dan; Gu, Yanhong

doi:10.1007/s11595-022-2582-3

Cited by 9 publications

(5 citation statements)

References 41 publications

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“…The IE fell to 86% from the transitory regime ( N RE ≥ 3000) due to the formation of microvortexes that promoted higher desorption of IL molecules from the surface, making it difficult to form a continuous CI film. 55 This negative effect exerted by the increasing electrode rotation speed was also reported by Ismail et al and Benmahammed et al who observed the diminution of the IE values of organic CIs from 47 and 89% up to 3 and 60%, respectively. 42 , 56 …”

Section: Resultssupporting

confidence: 67%

“…According to the obtained results, the IL adsorption diminished slightly in laminar regime ( N RE = 1000–2000), which can be attributed to the increase in the transport of CI molecules toward the metal surface that kept the IL adsorption and formation of complexes, , which in turn reduced the τ RDE negative effect and IE in 8% with respect to the stationary state. The IE fell to 86% from the transitory regime ( N RE ≥ 3000) due to the formation of microvortexes that promoted higher desorption of IL molecules from the surface, making it difficult to form a continuous CI film . This negative effect exerted by the increasing electrode rotation speed was also reported by Ismail et al and Benmahammed et al who observed the diminution of the IE values of organic CIs from 47 and 89% up to 3 and 60%, respectively. , …”

Section: Resultssupporting

confidence: 55%

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Investigation of Sulfonium-Iodide-Based Ionic Liquids to Inhibit Corrosion of API 5L X52 Steel in Different Flow Regimes in Acid Medium

et al. 2022

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The present work deals with the corrosion inhibition mechanism of API 5L X52 steel in 1 M H2SO4 employing the ionic liquid (IL) decyl(dimethyl)sulfonium iodide [DDMS+I–]. Such a mechanism was elicited by the polarization resistance (R p), potentiodynamic polarization (PDP), and electrochemical impedance spectroscopy (EIS) techniques, both in stationary and dynamic states. The electrochemical results indicated that the corrosion inhibition was controlled by a charge transfer process and that the IL behaved as a mixed-type corrosion inhibitor (CI) with anodic preference. The experimental results revealed maximal inhibition efficiency (IE) rates up to 93% at 150 ppm in the stationary state, whereas in turbulent flow, the IE fell to 65% due to the formation of microvortexes that promoted higher desorption of IL molecules from the surface. The Gibbs free energy of adsorption (ΔG°ads) value of −34.89 kJ mol–1, obtained through the Langmuir isotherm, indicated the formation of an IL monolayer on the metal surface by combining physisorption and chemisorption. The surface analysis techniques confirmed the presence of Fe x O y , FeOOH, and IL on the surface and showed that corrosion damage diminished in the presence of IL. Furthermore, the quantum chemistry calculations (DFT) indicated that the iodide anion hosted most of the highest occupied molecular orbital (HOMO), which eased its adsorption on the anodic sites, preventing the deposition of sulfate ions on the electrode surface.

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Section: Resultssupporting

confidence: 67%

Section: Resultssupporting

confidence: 55%

Investigation of Sulfonium-Iodide-Based Ionic Liquids to Inhibit Corrosion of API 5L X52 Steel in Different Flow Regimes in Acid Medium

et al. 2022

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“…The model uses the same solution environment as the autoclave immersion experiment. Finite element simulation was performed using Comsol software [18][19][20][21]. Irrespective of insoluble substances, the modeled electrolyte species are H + , OH − , Cl − , Na + , and Fe 2+ .…”

Section: Simulation Model Calculationsmentioning

confidence: 99%

A Study of the Mechanisms and Kinetics of the Localized Corrosion Aggravation of Ductile Iron in a Harsh Water Quality Environment

Wang

Liu

Tao

et al. 2022

Metals

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Ductile iron is a high-strength cast iron material. The spherical graphite obtained by inoculation treatment effectively improves the mechanical properties of cast iron, resulting in higher strength than carbon steel. However, severe corrosion may occur under specific circumstances, especially in thermal water pipelines. In this paper, the corrosion mechanisms at the main defective points of ductile iron were investigated using microscopic morphological characterization after accelerated tests combined with numerical simulations. The influence law of each environmental factor on the corrosion kinetics of ductile iron in a complex water quality environment was studied using dynamic potential polarization tests. The results showed that the main causative factors leading to the increased corrosion of ductile iron were the presence of tail-like gaps on its surface, and the crescent-shaped shrinkage and loosening organization around the graphite spheres. After mechanical treatment was applied to eliminate the obvious defects, the number of corrosion pits was reduced by 41.6%, and the depth of the pits was slowed down by 40% after five days. By comparison, after ten days, the number of pits was reduced by 51%, and the depth of the pits was slowed down by 50%. The dynamic potential polarization test results show that the dissolved oxygen concentration has the greatest influence on the corrosion of ductile iron in the simulated water environment; meanwhile, the water hardness can slow down the corrosion of ductile iron. The relative influence of each environmental factor is as follows: dissolved oxygen concentration > temperature > immersion time > water hardness > pH > Cl−.

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“…The development of oil and gas resources in western China is an important aspect of the 'Belt and Road Initiative' strategy [1]. However, the exploitation processes that will be carried out as part of this strategy will occur in extremely aggressive oilfield environments at high temperature (>180 • C), high salinity (Cl − concentration > 60,000 mg/L), high CO 2 pressure (>4 MPa), and high flow velocity (>3 m/s) [2][3][4][5]. These aggressive environments can cause severe corrosion issues, which result in huge economic problems.…”

Section: Introductionmentioning

confidence: 99%

Effect of Surface Roughness on the Corrosion of HP-13Cr Stainless Steel in the Dynamic Aggressive Oilfield Environment

Wang,

Xue,

Zhao

et al. 2024

Metals

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The effects of surface roughness on the corrosion mechanism of HP-13Cr stainless steel in the dynamic aggressive oilfield environment were investigated through surface analysis, weight-loss measurements, and computational fluid dynamics simulations. The results showed that the surface roughness mainly changed the fluid state at the metal/solution interface. With the increase in the surface roughness, the vortex was more likely to form at the trough of the waves. The vortex could result in the deposition process and inhomogeneity in the thickness of the oxide film. The pitting corrosion occurred more easily. Furthermore, the temperature and CO2 pressure obviously facilitated the corrosion rate.

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Corrosion Behavior of Pipeline Steel in Oilfield Produced Water under Dynamic Corrosion System

Cited by 9 publications

References 41 publications

Investigation of Sulfonium-Iodide-Based Ionic Liquids to Inhibit Corrosion of API 5L X52 Steel in Different Flow Regimes in Acid Medium

Investigation of Sulfonium-Iodide-Based Ionic Liquids to Inhibit Corrosion of API 5L X52 Steel in Different Flow Regimes in Acid Medium

A Study of the Mechanisms and Kinetics of the Localized Corrosion Aggravation of Ductile Iron in a Harsh Water Quality Environment

Effect of Surface Roughness on the Corrosion of HP-13Cr Stainless Steel in the Dynamic Aggressive Oilfield Environment

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