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 Multiple Applications of a Novel Cationic Gemini Surfactant: Anti-Microbial, Anti-Biofilm, Biocide, Salinity Corrosion Inhibitor, and Biofilm Dispersion (Part II)

Molecules ◽  
2020 ◽  
Vol 25 (6) ◽  
pp. 1348 ◽  
Author(s):  
A. Labena ◽  
M. A. Hegazy ◽  
Radwa M. Sami ◽  
Wael N. Hozzein
Keyword(s):  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Broad Spectrum ◽  
Gemini Surfactant ◽  
Oil And Gas ◽  
High Salinity ◽  
Wide Spectrum ◽  
Oil And Gas Industry ◽  
Metal Corrosion ◽  
Cationic Gemini Surfactant

The Egyptian petroleum industries are incurring severe problems with corrosion, particularly corrosion that is induced by sulfidogenic microbial activities in harsh salinity environments despite extensively using biocides and metal corrosion inhibitors. Therefore, in this study, a synthesized cationic gemini surfactant (SCGS) was tested as a broad-spectrum antimicrobial, anti-bacterial, anti-candida, anti-fungal, anti-biofilm (anti-adhesive), and bio-dispersion agent. The SCGS was evaluated as a biocide against environmental sulfidogenic-bacteria and as a corrosion inhibitor for a high salinity cultivated medium. The SCGS displayed wide spectrum antimicrobial activity with minimum bactericidal/fungicidal inhibitory concentrations. The SCGS demonstrated anti-bacterial, anti-biofilm, and bio-dispersion activity. The SCGS exhibited bactericidal activity against environmental sulfidogenic bacteria and the highest corrosion inhibition efficiency of 93.8% at 5 mM. Additionally, the SCGS demonstrated bio-dispersion activity against the environmental sulfidogenic bacteria at 5.49% salinity. In conclusion, this study provides a novel synthesized cationic surfactant with many applications in the oil and gas industry: as broad-spectrum antimicrobial and anti-biofilm agents, corrosion inhibition for high salinity, biocides for environmentally sulfidogenic bacteria, and as bio-dispersion agents.

Anti-Corrosion Properties of the Reactive Anode and Cathode Inhibitor by Electrochemical Treatment in Aqueous

2013 ◽  
Vol 284-287 ◽  
pp. 31-34
Author(s):  
Han Seung Lee ◽  
Hwa Sung Ryu
Keyword(s):  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Concrete Structure ◽  
Corrosion Inhibitors ◽  
Chloride Ion ◽  
Passive State ◽  
Molar Ratio ◽  
Ion Content ◽  
Organic Corrosion Inhibitor ◽  
Inhibition Performance

The durability of a concrete structure is most significantly influenced by the corrosion of reinforcing bars, rather than by the deterioration of concrete itself. The corrosion of reinforcement bars due to chloride serves as a main deterioration factor at the interface between the bars and the concrete in the concrete structure. Accordingly, the corrosion inhibitors are widely used to improve the resistance to chloride penetration into reinforced concrete. Corrosion inhibitors are generally divided into the anode-type inorganic inhibitors and anode-cathode-type organic inhibitors, in terms of the reaction type. It is known that when the Cl-:OH- concentration ratio exceeds 0.6%, film on passive state metal on the bar-concrete interface is damaged and local corrosion starts regardless of the chloride ion content. In this study, the performance of the corrosion inhibitor was examined using a potentiostat, with chloride ion contents of 1.2kg/m3 (as reference), 2.4kg/m3, and 4.8kg/m3. The variables were the inhibitor type, Cl-:OH- molar ratio according to the addition of anode-type inorganic corrosion inhibitor (four ratios: 0.0%, 0.3%, 0.6% and 1.2%), and ratio compared to the standard anode-cathode-type organic corrosion inhibitor liquid (four ratios: 0.0, norm 1/2, norm, norm 2 times). As a result, with the anode-type inorganic nitrite corrosion inhibitor, the corrosion inhibition performance was verified with a corrosion potential of -0.30V at a molar ratio of 0.3% or higher when the chloride ion content was 1.2kg/m3, and at a molar ratio of 0.6% or higher when the chloride ion content was 2.4kg/m3 or 4.8kg/m3. With the anode-cathode-type organic corrosion inhibitor, the corrosion inhibition performance was very good at half the standard quantity (0.42kg/m3) regardless of the chloride ion content. From the added corrosion inhibitor quantities, the anode-cathode-type organic corrosion inhibitor had a better corrosion inhibition performance than the anode-type inorganic nitrite corrosion inhibitor.

Pre-Treatment Experimental Study of Organic Acid: An Alternative Means to Overcome Inorganic Scale Build-Up Problem in Deep Well

2021 ◽  
Author(s):  
Bagus Muliadi Nasution ◽  
Andrew Yonathan ◽  
Muthi Abdillah ◽  
Wang Zhen
Keyword(s):  
Hydrochloric Acid ◽  
Formic Acid ◽  
Organic Acid ◽  
Corrosion Inhibitor ◽  
Corrosion Test ◽  
Oil And Gas ◽  
Experimental Studies ◽  
Oil And Gas Industry ◽  
Scale Inhibitor ◽  
Pre Treatment

Abstract Organic acid has been widely applied for inorganic scale treatment in oil and gas industry including well stimulation and scale inhibitor. Thanks to its low corrosivity and slower reaction rate with rock, organic acid is considered to offer better performance comparing to strong acid - Hydrochloric Acid (HCl). Yet, proper treatment requires vigorous analysis and experiment in order to meet foremost expectations. Besides, mistreatment of scale could result in formation damage including clay precipitation. Pre-treatment experiments were performed on Zelda field at South East Sumatera block, that has faced with scale problem for ages. Water sample was taken from flowing Zelda A-08 well to be analyzed for mineral's saturation level. Scale was extracted from three sources including tubing, sand bailer, and Electrical Submersible Pump (ESP) of Zelda A-08. Those scale were treated in X-Ray Powder Diffraction (XRD) for mineral composition, and solubility test that utilized two types of acid system - formic acid (HCOOH) and hydrochloric acid (HCl) for comparison. Anti-swelling test and corrosion test were performed to examine the effectiveness of clay stabilizer and corrosion inhibitor. As for carbonate analysis, both formic acid 9% and HCl 15% have comparable solubility (98.17% vs 98% for tubing's scale, 91.86% vs 82.79% for ESP's scale, and 70.30% vs 68.07% for sand bailer's scale). Yet, longer reaction is carried out by formic acid 9% (1 hour) comparing to HCl 15% (18 minutes). For silicate analysis, HF-formic acid provided the higher solubility than HF-HCl (8.34% vs 5.67% for ESP's scale and 30.48% vs 25.68% for sand bailer's scale). On anti-swelling test, by reducing swelling tendency up to 62.6%, it proves that examined clay stabilizer works perfectly against swelling potential of clay, despite of high swelling tendency of sand bailer's scale (25.8%). On corrosion test, adding on corrosion inhibitor (pyridine-based) into solution results in regular HCl 15% has corrosion rate 26.279 g/m2.h which is much higher (300%) than HF-HCl (7.977 g/m2.h) and HF-formic acid (8.229 g/m2.h). Based on pre-treatment test, formic acid 9% together with examined corrosion inhibitor and clay stabilizer, can be used as an alternative to regular HCl 15% for stimulation purpose where more areas will be covered that previously left unreachable by regular acid 15%. In addition, potentially more effective squeezed scale inhibitor using organic acid can also be achieved by performing further experiments. The method presented in this paper for pre-treatment experimental studies of organic acid can provide engineers with intensive guide to meet the best result of organic acid treatment.

STUDY OF CHEMICAL REAGENTS AGAINST CORROSION PROCESSES IN THE CONDITIONS OF THE UZEN FIELD

2021 ◽  
Vol 73 (1) ◽  
pp. 185-195
Author(s):  
U. Zh. Tazhenbayeva ◽  
◽  
Ye.O. Ayapbergenov ◽  
G. Zh. Yeligbayeva ◽  
◽  
...  
Keyword(s):  
Corrosion Inhibitors ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Freezing Temperature ◽  
Gas Production ◽  
Localized Corrosion ◽  
Laboratory Research ◽  
Oil And Gas Production ◽  
Field Equipment ◽  
Long Run

One of the biggest challenges in oil and gas production projects is dealing with the various types of corrosion to which certain parts of field equipment are exposed. Selecting the right corrosion inhibitor for the specific environment is extremely important. Choosing inhibitors for a particular location can be a difficult task because there are many factors to be considered. Understanding the corrosion problems that can arise is important in the oil and gas industry, and knowledge of which inhibitors to use to deal with general and localized corrosion will save time and money in the long run. This article presents the results of studies of various brands of domestic and foreign corrosion inhibitors for use in the Uzen field: physical and chemical characteristics (density, viscosity, freezing temperature, mass fraction of active substance, compatibility with field waters, amine number), efficiency of corrosion inhibitors in laboratory conditions and on a bench simulating field reservoir conditions, taking into account pressure, temperature, fluid flow rate, as well as aggressive components - hydrogen sulfide and carbon dioxide. In addition, studies of corrosion inhibitors' effect on the process of preparation of production are also given. The works were carried out in the center of scientific and laboratory research of KMG Engineering branch " KazNIPImunaygas" LLP.

scholarly journals Performance of Waterborne Polyurethanes in Inhibition of Gas Hydrate Formation and Corrosion: Influence of Hydrophobic Fragments

Molecules ◽  
2020 ◽  
Vol 25 (23) ◽  
pp. 5664
Author(s):  
Roman S. Pavelyev ◽  
Yulia F. Zaripova ◽  
Vladimir V. Yarkovoi ◽  
Svetlana S. Vinogradova ◽  
Sherzod Razhabov ◽  
...  
Keyword(s):  
Corrosion Inhibitor ◽  
Oil And Gas ◽  
Hydrate Formation ◽  
Oxygen Demand ◽  
Oil And Gas Industry ◽  
Dual Function ◽  
Structure Property ◽  
Tert Butyl ◽  
Waterborne Polyurethanes ◽  
Gas Hydrate Formation

The design of new dual-function inhibitors simultaneously preventing hydrate formation and corrosion is a relevant issue for the oil and gas industry. The structure-property relationship for a promising class of hybrid inhibitors based on waterborne polyurethanes (WPU) was studied in this work. Variation of diethanolamines differing in the size and branching of N-substituents (methyl, n-butyl, and tert-butyl), as well as the amount of these groups, allowed the structure of polymer molecules to be preset during their synthesis. To assess the hydrate and corrosion inhibition efficiency of developed reagents pressurized rocking cells, electrochemistry and weight-loss techniques were used. A distinct effect of these variables altering the hydrophobicity of obtained compounds on their target properties was revealed. Polymers with increased content of diethanolamine fragments with n- or tert-butyl as N-substituent (WPU-6 and WPU-7, respectively) worked as dual-function inhibitors, showing nearly the same efficiency as commercial ones at low concentration (0.25 wt%), with the branched one (tert-butyl; WPU-7) turning out to be more effective as a corrosion inhibitor. Commercial kinetic hydrate inhibitor Luvicap 55 W and corrosion inhibitor Armohib CI-28 were taken as reference samples. Preliminary study reveals that WPU-6 and WPU-7 polyurethanes as well as Luvicap 55 W are all poorly biodegradable compounds; BODt/CODcr (ratio of Biochemical oxygen demand and Chemical oxygen demand) value is 0.234 and 0.294 for WPU-6 and WPU-7, respectively, compared to 0.251 for commercial kinetic hydrate inhibitor Luvicap 55 W. Since the obtained polyurethanes have a bifunctional effect and operate at low enough concentrations, their employment is expected to reduce both operating costs and environmental impact.

CORROSION INHIBITORS IN OIL AND GAS PRODUCING EQUIPMENT

1972 ◽  
Vol 12 (1) ◽  
pp. 99
Author(s):  
Roy D. Stanphill ◽  
R.W. Gibson
Keyword(s):  
Corrosion Inhibitor ◽  
Corrosion Inhibitors ◽  
Oil And Gas ◽  
Field Conditions ◽  
Screening Tests ◽  
Inhibitor Efficiency ◽  
Organic Corrosion Inhibitor ◽  
The One ◽  
Specific Formulation ◽  
Selection Of

Most internal corrosive conditions found in oil and gas producing equipment can be controlled through the use of corrosion inhibitors. Organic corrosion inhibitor chemistry is now well known and inhibition mechanisms are understood. There are many good inhibitor formulations available today; so many, in fact, that the producer is faced with the problem of selecting the one best suited to his requirements. Many people depend solely on various types of comparative inhibitor efficiency tests in the laboratory to evaluate and select inhibitors for use under field conditions. These tests are important as relative screening tests, but the selection of a carefully planned application program for the specific formulation is equally important.

Experimental Investigation of a New Derived Oleochemical Corrosion Inhibitor

2019 ◽  
Vol 796 ◽  
pp. 112-120
Author(s):  
Mysara Eissa Mohyaldinn ◽  
Wai Lin ◽  
Ola Gawi ◽  
Mokhtar Che Ismail ◽  
Quosay A. Ahmed ◽  
...  
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Dynamic Condition ◽  
Methyl Esters ◽  
Static Condition ◽  
Chemical Corrosion ◽  
Boron Fluoride

Most of the corrosion inhibitors that are used in industry contain chemicals that are harmful to health and environment. Corrosion inhibitors derived from green sources are, therefore, believed to be a good option for replacing the chemical corrosion inhibitors. In this work, a green oleochemical corrosion inhibitor derived from Jatropha Curcas is introduced. The paper discusses the methodology of deriving the corrosion inhibitor as well as the experimental test conducted for evaluating its corrosion inhibition efficiency. The new oleochemical corrosion inhibitor was derived via two reactions. Jatropha oil was firstly saponified with sodium hydroxide to yield gras acid and glycerol, which was then esterified with boron fluoride in presence of excess methanol to produce the oil methyl esters, which is used as oleo-chemical corrosion inhibitor. To evaluate the oleo-chemical corrosion inhibitor, the corrosion rate of mild steel in NaCl corrosive medium with CO2 is tested at static condition and two dynamic conditions, namely 500 and 1500 rpm. This is to simulate the transitional and turbulent flow in a pipeline. At each dynamic condition, the proposed corrosion inhibitor was tested at concentration dosages of 0, 50, 100, and 150 ppm. The experiments results revealed a good performance of the new oleochemical corrosion inhibitor. The inhibition efficiency was found to be highly affected by the concentration of corrosion inhibitor. Total corrosion inhibition of the mild steel was noticed by using 150 ppm at dynamic condition of 500 rpm.

Corrosion Inhibitor Performance with Presence of FeCO3 Film in CO2 Corrosion Environment under Fluid Flow Effect

2013 ◽  
Vol 789 ◽  
pp. 507-510 ◽  
Author(s):  
Sarini Mat Yaakob ◽  
M. Che Ismail
Keyword(s):  
Fluid Flow ◽  
Corrosion Inhibitor ◽  
Oil And Gas ◽  
Film Formation ◽  
Oil And Gas Industry ◽  
Hydrodynamic Condition ◽  
Iron Carbonate ◽  
Gas Industry ◽  
Flow Effect ◽  
Economic Methods

Corrosion due to carbon dioxide (CO2) has a major impact on the oil and gas industry by severely affecting production and process facilities. One of the most economic methods to prevent the corrosion of piping and plants is the application of corrosion inhibitors. The presences of corrosion product such as iron carbonate (FeCO3) film may affect to the performance of corrosion inhibitor. In addition to that, fluid flow effect in pipeline may also influence the performance of corrosion inhibitor. Thus, the present work is conducted to study the effect of FeCO3 film to the performance of imidazoline based corrosion inhibitor under fluid flow effect. The experiments were done in glass cells at 80°C. The hydrodynamic condition experiment was simulated using rotating cylinder electrode (RCE). Corrosion inhibitor was added at two different concentrations in the iron carbonate film formation. A corrosion rates were measured by linear polarization resistance (LPR) method. The film was later analyzed using scanning electron microscopy (SEM). It was found that a better corrosion protection is still offered by corrosion inhibitor even with presence of FeCO3 film. A synergistic effect is offered by these two films of corrosion inhibitor and FeCO in reducing corrosion rate.

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