Newly synthesized pyrimidine compound as CO2 corrosion inhibitor for steel in highly aggressive simulated oilfield brine

2019 ◽  
Vol 33 (11) ◽  
pp. 1226-1247 ◽  
Author(s):  
Ikenna B. Onyeachu ◽  
Mumtaz A. Quraishi ◽  
Ime B. Obot ◽  
J. Haque
Keyword(s):  
Corrosion Inhibitor ◽  
Co2 Corrosion ◽  
Oilfield Brine

Development of an effective bactericide and CO2-corrosion inhibitor

2019 ◽  
Vol 24 (2) ◽  
pp. 52-58
Author(s):  
N.Sh. Rzaeva ◽  
V.M. Abbasov ◽  
L.I. Aliyeva ◽  
L.I. Nasibova
Keyword(s):  
Corrosion Inhibitor ◽  
Co2 Corrosion

A Highly Effective Corrosion Inhibitor by Use of Gemini Imidazoline

SPE Journal ◽  
2016 ◽  
Vol 21 (05) ◽  
pp. 1743-1746 ◽  
Author(s):  
Jiang Yang ◽  
Liyang Gao ◽  
Xuan Liu ◽  
Wenlong Qin ◽  
Chengxian Yin ◽  
...  
Keyword(s):  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Corrosion Inhibitors ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Molar Ratio ◽  
Co2 Corrosion ◽  
Highly Effective ◽  
Carbon Dioxide Co2 ◽  
Triethylene Tetramine

Summary Corrosion inhibitors are widely used to control corrosion under the sweet and sour environments in the oil and gas industry. More effective and environmentally friendly corrosion inhibitors need to be developed. This paper studies a new gemini imidazoline (GIM) corrosion inhibitor, in which two hydrocarbon chains and two head groups are linked by a rigid spacer. The GIM was synthesized through the reaction of oleic acid with triethylene tetramine at 2:1 molar ratio. The performance of the GIM on inhibition of carbon dioxide (CO2) corrosion was evaluated by linear polarization resistance in sparged-beaker testing. Rotating-wheel testing was performed to evaluate the film persistency of the test inhibitors. The results showed that corrosion inhibition of the GIM was more effective at lower concentration than that of conventional imidazoline. The mixture of GIM and fatty acid also showed better film persistency than conventional imidazoline. The emulsion tendency of the GIM was less than that of conventional imidazoline. The mechanism of the highly effective GIM was studied. It showed that GIM has much-higher surface activity than conventional imidazoline. The critical micelle concentration (CMC) of GIM is several times lower than that of conventional imidazoline. Hence, the new GIM corrosion inhibitor and its mixture give more-effective corrosion inhibition at low concentration; there is also a lesser environmental effect.

scholarly journals The Salts of Nitronic acid as CO2-Corrosion Inhibitors

2014 ◽  
Vol 10 (8) ◽  
pp. 3042-3052
Author(s):  
Abbasov V. M. ◽  
Aliyeva L. I. ◽  
Haciyeva S. J. ◽  
Mursalov N. I.
Keyword(s):  
Protective Effect ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibitors ◽  
Isopropyl Alcohol ◽  
Protective Layer ◽  
Co2 Corrosion ◽  
Isomeric Structure ◽  
Branched Structure ◽  
Higher Olefins ◽  
Nitronic Acid

The salts of nitronic acids were obtained by nitration of higher olefins, both normal and isomeric structure in the presence of aqueous alkali. The resulting salts (Na+, K+, NH4+), were tested in CO2 -media as a corrosion inhibitor. The results showed that, the protective effect of the linear nitronated olefins increases by increasing the number of carbon atoms. This is due to the fact that because of  the branched structure of the compounds, it is much more difficult to form a dense protective layer on the metal surface. 20% solutions of nitronated ethanolamine in isopropyl alcohol was synthesized and tested as corrosion inhibitor in carbon dioxide environments. The results showed that diethanolamine nitron based on a mixture of normal olefins C16-C18 at a concentration of 50 ppm has a high protective effect of  99.69%.

The Effect of Rotation and Temperature on the Inhibition Performance of Cashew (Anacardium Occidentale L.) Nut Shell Liquid on Co2 Corrosion of Carbon Steel

2008 ◽  
Vol 31 (2) ◽  
pp. 122-129
Author(s):  
J. Buchweishaija ◽  
L.L. Mkayala
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Electrochemical Techniques ◽  
Rotating Disk ◽  
Rotating Disk Electrode ◽  
Co2 Corrosion ◽  
Cashew Nut Shell Liquid ◽  
Dynamic Conditions ◽  
Cashew Nut ◽  
Inhibition Performance

A natural extract of cashew nut shells, Cashew Nut Shell Liquid (CNSL) was investigated as a corrosion inhibitor for carbon steel in 3% NaCl solutions saturated with CO2 gas using electrochemical techniques (i.e. potentiodynamic polarization and ac-impedance). The investigation was performed at different temperatures under static and dynamic conditions using a Rotating Disk Electrode (RDE). It was found that CNSL reduces the electrochemical processes taking place on carbon steel undergoing corrosion. The percentage inhibitorefficiency increases with increase in CNSL concentration and decreases with rise in temperature. Better performance at low CNSL concentration was registered under dynamic conditions and room temperatures. Thus CNSL is a potential corrosion inhibitor for carbon steel undergoing corrosion in CO2 medium.

scholarly journals Use of a Gemini-Surfactant Synthesized from the Mango Seed Oil as a CO2-Corrosion Inhibitor for X-120 Steel

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4206
Author(s):  
E. Sanchez-Salazar ◽  
E. Vazquez-Velez ◽  
J. Uruchurtu ◽  
J. Porcayo-Calderon ◽  
M. Casales ◽  
...  
Keyword(s):  
Corrosion Inhibitor ◽  
Steel Surface ◽  
Gemini Surfactant ◽  
Electrochemical Impedance ◽  
Pipeline Steel ◽  
Steel Corrosion ◽  
Co2 Corrosion ◽  
Mango Seed ◽  
Spectroscopy Studies ◽  
Corrosion Of Steel

A gemini surfactant imidazoline type, namely N-(3-(2-fatty-4,5-dihydro-1H-imidazol-1-yl) propyl) fatty amide, has been obtained from the fatty acids contained in the mango seed and used as a CO2 corrosion inhibitor for API X-120 pipeline steel. Employed techniques involved potentiodynamic polarization curves, linear polarization resistance, and electrochemical impedance spectroscopy. These tests were supported by detailed scanning electronic microscopy (SEM) and Raman spectroscopy studies. It was found that obtained gemini surfactant greatly decreases the steel corrosion rate by retarding both anodic and cathodic electrochemical reactions, with an efficiency that increases with an increase in its concentration. Gemini surfactant inhibits the corrosion of steel by the adsorption mechanism, and it is adsorbed on to the steel surface according to a Langmuir model in a chemical type of adsorption. SEM and Raman results shown the presence of the inhibitor on the steel surface.

Water-soluble thiosemicarbazide-imidazole derivative as an efficient inhibitor protecting P110 carbon steel from CO2 corrosion

2016 ◽  
Vol 63 (6) ◽  
pp. 437-444 ◽  
Author(s):  
Yi He ◽  
Ranran Yang ◽  
Yanqiu Zhou ◽  
Lan Ma ◽  
Lei Zhang ◽  
...  
Keyword(s):  
Corrosion Inhibitor ◽  
Design Methodology ◽  
Electrochemical Impedance ◽  
Water Soluble ◽  
Imidazole Derivative ◽  
Co2 Corrosion ◽  
Efficient Inhibitor ◽  
Solubility In Water ◽  
Content Type ◽  
Good Solubility

Purpose The purpose of this paper is to adopt both the fragments of imidazole and thiosemicarbazide as reaction centers, to synthesize a water-soluble corrosion inhibitor named as thiosemicarbazide-imidazole derivative (TH-IM). Design/methodology/approach This paper presents potentiodynamic polarization tests, electrochemical impedance spectroscopy tests and morphology study of metal surface by scanning electron microscope and thermodynamic study. Findings In the aggressive condition of CO2 saturated Wt. NaCl solution at 333 K for 72 h with 400 ppm inhibitor dosage, the efficiency of inhibition increases approximately 98 per cent through the method of weight loss. Originality/value This paper finds a new corrosion inhibitor about TH-IM which has a good solubility in water.

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