A pyrimidine derivative as a high efficiency inhibitor for the corrosion of carbon steel in oilfield produced water under supercritical CO2 conditions

Hou, Baoshan; Li, Y.Y.; Zhu, G.Y.; Liu, H.F.; Zhang, G.A.

doi:10.1016/j.corsci.2019.108334

Cited by 63 publications

(5 citation statements)

References 56 publications

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“…Y 0 is a constant phase element associated with the electronic double layer capacitance, created on the interface surface of the working and solution electrode; however, since it is not an ideal capacitance due to roughness and possible pores on the surface of the steel, with an ideality factor α, the gerischer element G, that is found only in the equivalent circuit of the treated steel, is an indication of the porosity of the organic coating with a porosity factor K, the gerischer element is necessary to explain the reaction of the organic coating, because the reactions between the two surfaces, the surface of the steel and the organic coating, cannot be distinguished from each other [ 28 ]. Finally, R p is the polarization resistance or corrosion resistance of the material [ 27 , 29 , 30 ]. This variable is the one of interest for the study.…”

Section: Resultsmentioning

confidence: 99%

Innovative Method for Coating of Natural Corrosion Inhibitor Based on Artemisia vulgaris

et al. 2021

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In this work, the production of a novel methodology for the application of natural corrosion inhibitors on steel, using an autoclave is presented. Tests were carried out using Artemisia vulgaris. The inhibitor was produced with a simple soxhlet extraction process using 15 g of Artemisia vulgaris and 260 mL of Ether. Once the inhibitor was produced, the steel was immersed in it, to form a coating that protects the material against corrosion. Thermogravimetry analyzes (TGA) were performed on the inhibitor, to determine the degradation temperature; it was observed that, at 321 °C, the loss of organic mass begins. After applying the inhibitor to the steel, the Fourier Transform Infrared Spectroscopy (FTIR) technique was used to determine the vibrational bands and the difference between the spectra for the steels before and after the coating was applied. For the evaluation of the method efficiency, Electrochemical Impedance Spectroscopy (EIS) and polarization resistance tests were performed, where Nyquist diagrams and Tafel curves were obtained, for steels with and without treatment. In this case, an increase of 93% in the corrosion resistance, and an 88% decrease in the corrosion rate were observed, proving that this methodology can be used to protect steel against corrosion and extend the steel’s useful life.

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Section: Resultsmentioning

confidence: 99%

Innovative Method for Coating of Natural Corrosion Inhibitor Based on Artemisia vulgaris

et al. 2021

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“…Tables and show that the maximum shift in the OCP value for P(VCap- co -MA) solutions is lower than 85 mV in oilfield-produced water saturated with H 2 S and CO 2 except for P(VCap- co -MA)-1 in H 2 S medium with a value higher than 85 mV. This indicates that the inhibition mechanism of all P(VCap- co -MA)s in oilfield-produced water saturated with H 2 S and CO 2 is mixed-type, while P(VCap- co -MA)-1 in H 2 S solution works mainly as an anodic-type corrosion inhibitor . The corrosion inhibition efficiency obtained by the inhibitors is in the order of P(VCap- co -MA)-3 > P(VCap- co -MA)-1 ∼ P(VCap- co -MA)-2 > P(VCap- co -MA)-4 > P(VCap- co -MA)-5 in oilfield-produced water saturated with H 2 S (Table ).…”

Section: Resultsmentioning

confidence: 91%

Development of Highly Efficient Dual-Purpose Gas Hydrate and Corrosion Inhibitors for Flow Assurance Application: An Experimental and Computational Study

et al. 2022

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Gas hydrate and corrosion inhibitors are widely used to ensure successful and economic hydrocarbon stream flow inside the oil and gas pipelines. However, compatibility problems are observed during their co-injection into the flowlines as they have different molecular chemistry. Modifying effective gas hydrate inhibitors, such as polyvinylcaprolactam (PVCap), with some active functional groups in corrosion inhibition, can overcome compatibility issues. In this study, maleic anhydride was used as a cheap monomer to synthesize ionic N-vinyl caprolactam/maleic-based copolymers (P(VCap-co-MA)) as potential dual-purpose gas hydrate and corrosion inhibitors. The gas hydrate experiments showed that the inhibitors effectively inhibited natural gas hydrate formation and a maximum subcooling temperature of 14.6 °C achieved in a solution containing 2500 ppm P(VCap-co-MA)-3. The molecular dynamics simulation revealed that P(VCap-co-MA)-3 reduced the gas concentration in the liquid phase and occupied its adsorption sites on the hydrate surface to form a steric hindrance effect, inhibiting the gas hydrate formation. Electrochemical measurements indicated that P(VCap-co-MA)s significantly suppressed steel corrosion in oilfield-produced water saturated with H2S and CO2. P(VCap-co-MA)-3 and P(VCap-co-MA)-5 provided the highest protection of 96.9 and 96.1% in H2S and CO2 media, respectively. Moreover, simulation studies demonstrated that the inhibitors are strongly adsorbed on the steel surface to form a barrier layer on the surface, protecting against corrosive electrolytes. These findings suggest that the modification of a gas hydrate inhibitor improves not only its corrosion and gas hydrate inhibition performance but also decreases the operation costs for flow assurance in the oil and gas pipelines.

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“…In light of the intercept (1/𝐾𝐾 𝑡𝑡𝑏𝑏𝑠𝑠 ) of the fitted straight line, the Gibbs free energy can be mainly calculated by Eq. ( 10): 45 𝛥𝛥𝐺𝐺 𝑡𝑡𝑏𝑏𝑠𝑠 𝜃𝜃 = −𝑅𝑅𝑅𝑅 𝑙𝑙𝑙𝑙( 55.5𝐾𝐾 𝑡𝑡𝑏𝑏𝑠𝑠 )…”

Section: Adsorption Isothermmentioning

confidence: 99%

Performance of Copper Corrosion Inhibitors on Pipecoridithiocarbamic Acid in 3 wt% NaCl Solution

Wei

Wei²,

Gao

et al. 2023

Electrochemistry

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Pipecolyldithiocarbamic Acid (PIPDTC) is actually considered as a potential corrosion inhibitor. The inhibition behavior of PIPDTC is appropriately confirmed by electrochemical measurements accompanied with spectra characterization techniques and DFT calculations. The consequences point out that chemically adsorbed PIPDTC molecule is an outstanding corrosion inhibitor with corrosion efficiency of 99.87% at 298 K and a great thermal stability ascribed to the Cu-S binding, implying that PIPDTC could be a tangible alternative as the prospective corrosion inhibitor for applications in marine industry.

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A pyrimidine derivative as a high efficiency inhibitor for the corrosion of carbon steel in oilfield produced water under supercritical CO2 conditions

Cited by 63 publications

References 56 publications

Innovative Method for Coating of Natural Corrosion Inhibitor Based on Artemisia vulgaris

Innovative Method for Coating of Natural Corrosion Inhibitor Based on Artemisia vulgaris

Development of Highly Efficient Dual-Purpose Gas Hydrate and Corrosion Inhibitors for Flow Assurance Application: An Experimental and Computational Study

Performance of Copper Corrosion Inhibitors on Pipecoridithiocarbamic Acid in 3 wt% NaCl Solution

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