AMPP Store - Products tagged with 'co2 corrosion'

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Investigation of CO2 Corrosion Inhibitor Adsorption and Desorption Behavior Using Langmuir Isotherm Model and Effects of Iron Carbide on CI Persistency

Product Number: 51323-19451-SG

Author: Kasra Shayar Bahadori, Bruce Brown, Marc Singer

Publication Date: 2023

$20.00

CO2 corrosion of the internal walls of mild steel pipelines has always been a significant problem in the oil and gas industries. Different methods have been implemented to mitigate internal pipeline corrosion. The use of corrosion inhibitors provides advantages compared to other mitigation techniques as inhibitor treatment costs are seen to be lower and can be easily adjusted over time.

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Investigation on the Mechanism of Corrosion Inhibitors by Contact Angle and Surface Tension

Product Number: 51324-21173-SG

Author: Ru Jia; Duy Nguyen; Boyd Laurent; Jeremy Moloney

Publication Date: 2024

$40.00

Corrosion is common, costly and a prevalent industrial problem in the oil and gas industry. Corrosion inhibitors, which are surfactant-like molecules, adsorb on the metallic surface of a pipe to form a barrier film that inhibits interactions of the pipe surface with corrosive species. Despite the prominence of surfactants as corrosion inhibitors, their adsorption behavior inside a pipeline is not well understood. In this study, continuous corrosion inhibitors were evaluated to correlate corrosion performance testing with contact angle and surface tension studies. Contact angle method was employed in corrosion inhibition studies for surface characterization. Surface tension method was used to determine critical micelle concentration. Contact angle results showed that for the water-soluble continuous corrosion inhibitors such as quaternary ammonium and imidazoline, a monolayer and bilayer were formed on the metal surface as reflected by an increase and then decrease in contact angle. The bilayer further increased the corrosion inhibition efficiency until the critical micelle concentration (CMC) was reached for quaternary ammonium and imidazoline only. However, the mixed quaternary ammonium and imidazoline in the formulation resulted in the maximum contact angle value being at its CMC indicating a compact monolayer formation. The results can provide a helpful guideline for further studying the synergistic effect of corrosion inhibitor mixtures.

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Mechanistic Correlations Between Single and Multicomponent Corrosion Inhibitor Blends for CO2 Corrosion Control

Product Number: 51317--9190-SG

ISBN: 9190 2017 CP

Author: Carlos Menendez

Publication Date: 2017

$20.00

Mechanistic information was obtained employing such electrochemical techniques as linear polarization, electrochemical frequency modulation and potentiodynamic polarization while using a rotating cylinder electrode system under CO2 corrosion conditions.

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Proactive Corrosion Control Assessment to Treat Higher-Acidity Gas

Product Number: 51324-20773-SG

Author: Omar S. Al-Abdulgader; Mohammed A. Al-Muaisub

Publication Date: 2024

$40.00

Prior to commissioning of a new gas treatment plant, geotechnical analysis showed significant increase in the acidity levels of the feed. Therefore, on-site proactive corrosion control assessment was performed to enable processing higher-acidity gas safely without impacting project schedule. The corrosiveness level of the new feed was re-evaluated in terms of the new required operating conditions. The dominant corrosion damage mechanisms were identified based on the new levels of Hydrogen Sulfide and Carbon Dioxide. Industrial standards and engineering practices were utilized to determine the potential impact on assets integrity. Top corrosion challenges that could be driven up by the increase in acid gas levels were proactively identified. Potential risks in the inlet and gas sweetening facilities were assessed, including the possibility of developing accelerated corrosion at the amine contactor and regenerator columns. The material endurance for the higher operating conditions, temperature and pressure, was evaluated. Further, different inspection techniques were utilized to validate the study results and findings. The inspection methods that were used to analyze and assess the amine contactor and regenerator columns are the On-Stream Inspection (OSI) using the External Ultrasonic Testing (UT) and Visual Examination of the internal surface of the equipment during the turnaround interval. Moreover, process and corrosion simulations of anticipated acid gas and water levels were performed to evaluate the need for advanced corrosion control and inspection measures. Based on that, an effective corrosion control strategy was established including different integrated mitigation measures to ensure assets integrity throughout their full-life cycle.

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Simulating Corrosion And Scale Interactions In Autoclave Experiments: A Sensitivity Study

Product Number: 51322-17622-SG

Author: Robert Jacklin, Joshua Owen, Danny Burkle, Anne Neville, Richard C. Woollam, Richard C. Woollam

Publication Date: 2022

$20.00

Carbon dioxide (CO₂) saturated brines containing high levels of calcium are commonly encountered across the energy sector: from hydrocarbon recovery to the harvesting of geothermal energy and re-deposition of CO₂ for permanent storage. These brines originate in deep underground reservoirs at elevated pressures and temperatures. Despite susceptibility to corrosive attack under these conditions, carbon steels are the preferred choice of pipeline materials for such processes, attributable to their low cost, availability and ease of manufacture.

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Study of Adsorption of Corrosion Inhibitor on Carbon Steel Under Co2 Environment by Using AFM

Product Number: 51317--9290-SG

ISBN: 9290 2017 CP

Author: Zineb Belarbi

Publication Date: 2017

$20.00

Adsorption/desorption process of 1-(2-aminoethyl)-2-oleyl-2-imidazolinium chloride on carbon steel. To study adsorption of imidazolinium chloride on carbon steel, in-situ atomic force microscopy measurements were performed in air, with and without imidazolinium chloride, in a 1 wt% NaCl solution purged with CO2 at pH 4.

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Surfactant Corrosion Inhibitor Adsorption and Desorption Kinetics in Aqueous CO2-Containing Environments

Product Number: 51324-20915-SG

Author: Ryan Abou-Shakra; Joshua Owen; Richard C. Woollam; Richard Barker; William H. Durnie

Publication Date: 2024

$40.00

Corrosion inhibitors are commonly employed to internally protect carbon steel pipelines in aqueous carbon dioxide (CO2)-saturated environments, such as those encountered in oil and gas production and geothermal operation. However, unexpected events can occur that lead to periods where corrosion inhibitor addition ceases completely, or the quantity of inhibitor added falls short of the typical concentration required for the desired level of corrosion mitigation. In these instances of interruption, there is a limited understanding of the inhibitor surface residence time, or ‘persistency’, and the associated effects on the corrosion rate of carbon steel. This study examines the influence of the substrate surface condition and inhibitor concentration on the persistency of benzyldimethyltetradecylammonium chloride (BAC-C14) corrosion inhibitor in a CO2-saturated 1 wt.% NaCl brine at 30°C. An electrochemical rotating cylinder electrode (operating at 1000 rpm) coupled with a dilution process was used to simulate persistency. Experimental results using carbon steel at 0.75x and 1x of the surfactant critical micelle concentration (CMC) showed that inhibitor efficiency and persistency improved markedly at the higher concentration. Supplementary experiments using pure iron illustrated an even stronger interaction between inhibitor and substrate, resulting in BAC-C14 failing to desorb after three days of exposure to uninhibited brine. A first-order kinetic model was assessed in its ability to predict the desorption response after dilution, based on fitting to the inhibitor adsorption response. Whilst a strong agreement was obtained between the theoretical desorption profile and experimental desorption data at 0.75xCMC on carbon steel, the model failed to predict the responses at CMC, as well as those on the pure iron substrate, necessitating consideration of other models.

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The Interaction of Quaternary Ammonium Compounds based Corrosion Inhibitor with Carbon Steel in CO2 Saturated NaCl Solution

Product Number: 51323-19515-SG

Author: Magdalena Eskinja, Gregor Mori, Masoud Moshtaghi, Stefan Hönig, Gerald Zehethofer

Publication Date: 2023

$20.00

Carbon steel is commonly used as a material for pipelines in oil and gas industry for facilities such as flowlines, down hole tubulars, transmission pipelines. Wide use of carbon steel is conventional due to its economic feasibility, however this kind of steel faces significant internal corrosion problems with corrosion rates reaching up to 10 mm/y if there is exclusion of protective methods. In oil and gas industry such carbon steel pipelines are utilized for transportation of hydrocarbons where they are simultaneously exposed to the co-generated acidic gases (carbon dioxide (CO2) and hydrogen sulphide (H2S)) and water.

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Thiols as Volatile Corrosion Inhibitors for Top of the Line Corrosion

Product Number: 51317--9096-SG

ISBN: 9096 2017 CP

Author: Zineb Belarbi

Publication Date: 2017

$20.00

The effectiveness of hexanethiol, decanethiol and 11-mercaptoundecanoic acid for CO2 corrosion inhibition of carbon steel exposed to top of the line conditions has been investigated. Weight loss measurements were used to measure the corrosion rate.

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Unravelling Surfactant Partitioning: Part 2 - Experimental Study of Multi-Component Surfactant Partitioning Responses and Their Influence on Inhibition Performance

Product Number: 51324-20883-SG

Author: Richard Barker; Joshua Owen; Raeesa Bhamji; Jeanine Williams; Amber Sykes

Publication Date: 2024

$40.00

In Part 1 of this two-part paper, a predictive model for multi-component partitioning was developed based on knowledge of individual component micellization and partitioning characteristics. In Part 2, the model’s validity is assessed through comparison with experimental partitioning data for an 1 wt.% NaCl brine:toluene system containing mixtures of two benzylammonium chloride corrosion inhibitors (BAC-C12 and BAC-C16). Following model validation, the implications of the experimental partitioning behavior on corrosion inhibition performance are examined via rotating cylinder electrode (RCE) experiments. Through selected experiments, the important role of each of the two surfactants and their relative molar concentration in influencing overall corrosion inhibition performance is examined. While BAC-C12 exhibited poor inhibition in isolation, when combined with BAC-C16 at specific molar ratios, BAC-C12 played a crucial role in retaining the longer chain surfactant in the aqueous phase. This response enabled BAC-C16 (the more effective surfactant corrosion inhibitor) to work synergistically with BAC-C12 to suppress carbon steel corrosion more effectively than the two components alone under these particular conditions.

Products tagged with 'co2 corrosion'

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