scholarly journals Selection of effective corrosion inhibitors for bischofite solutions and simulated medium of formation waters

2020 ◽  
Vol 166 ◽  
pp. 06005
Author(s):  
Viktoriia Dmytrenko ◽  
Yuriy Vynnykov ◽  
Ivan Zezekalо
Keyword(s):  
Carbon Dioxide ◽  
Mass Fraction ◽  
Corrosion Inhibitors ◽  
Oil Field ◽  
Carbon Dioxide Corrosion ◽  
Degree Of Protection ◽  
Amphoteric Surfactants ◽  
Methodological Approaches ◽  
Selection For ◽  
Selection Of

Questions of the corrosion inhibitors selection for protection of oil-field pipelines have been studied in the article. Results of research of technological and anticorrosive properties of the corrosion inhibitors in mediums simulating industrial environments are presented. The methodological approaches to selection of the corrosion inhibitors on a stage of laboratory experiments on an example of Kaverdinsky gas-condensate deposites have been described. It was found that all the surfactants tested in the simulated medium of the formation waters show a protective effect of more than 90% with a dosage of 1 g/dm3. It is recommended to use bischofite solution with a mass fraction of 24% MgCl2 and corrosion inhibiting 0.1% КI-1M admixture to protect industrial gas pipelines from carbon dioxide corrosion. This composition provides a degree of corrosion protection to 99.6%. The results of industrial tests confirmed the effectiveness of complex system – bischofite solution with a mass fraction of 24 % MgCl2 and addition of 0.1% KI-1M corrosion inhibitor. The cationic surfactants KI-1M, St, SRK and amphoteric surfactants EM and KAPB effectively protect in simulating medium and provide a degree of protection from carbon dioxide corrosion to 91.2-98.9%.

Rare Earth 4-Hydroxycinnamate Compounds as Carbon Dioxide Corrosion Inhibitors for Steel in Sodium Chloride Solution

2014 ◽  
Vol 161 (12) ◽  
pp. C527-C534 ◽  
Author(s):  
Nguyen Dang Nam ◽  
Motilal Mathesh ◽  
Bruce Hinton ◽  
Mike J. Y. Tan ◽  
Maria Forsyth
Keyword(s):  
Carbon Dioxide ◽  
Rare Earth ◽  
Sodium Chloride ◽  
Chloride Solution ◽  
Sodium Chloride Solution ◽  
Corrosion Inhibitors ◽  
Carbon Dioxide Corrosion

scholarly journals Investigation of Carbon Dioxide Corrosion Inhibitors for Steel for Use in Oil and Gas Production

2020 ◽  
Vol 129 (4) ◽  
pp. 14-18
Author(s):  
L. A. Magadova ◽  
◽  
K. A. Poteshkina ◽  
V. D. Vlasova ◽  
M. S. Pilipenko ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Corrosion Inhibitors ◽  
Oil And Gas ◽  
Produced Water ◽  
Gas Production ◽  
Gravimetric Analysis ◽  
Carbon Dioxide Corrosion ◽  
Oil And Gas Production ◽  
Protective Properties ◽  
Industrial Samples

The effect of carbon dioxide corrosion on the pipeline transport system and its protection methods are considered in this article. The corrosion inhibitors represented by imidazoline-based compositions and industrial samples of corrosion inhibitors are used as protective reagents, and the model of produced water saturated with carbon dioxide is used as an aggressive environment. The protective properties of inhibitors and the corrosion rate were evaluated by gravimetric analysis. The paper presents the results of the study of industrial samples and inhibitory compositions developed on the basis of the REC “Promyslovaya himiya”. According to the results of the work, a positive effect of additives of nonionic surfactants on the protective properties of inhibitors was noted.

The complexes of synthetic and petroleum acids N-derivatives as steel acidic corrosion inhibitors

2020 ◽  
Vol 25 (2) ◽  
pp. 18-25
Author(s):  
L.I. Aliyeva ◽  
L.M. Efendiyeva ◽  
V.M. Abbasov ◽  
G.Y. Rustamli ◽  
S.F. Akhmedbekova
Keyword(s):  
Carbon Dioxide ◽  
Corrosion Inhibitors ◽  
Atmospheric Oxygen ◽  
Corrosion Process ◽  
Molar Ratio ◽  
Metal Loss ◽  
Co2 Corrosion ◽  
Carbon Dioxide Corrosion ◽  
Catalytic Systems ◽  
Heterogeneous Catalytic

Oxy- and petroleum acids were synthesized by liquid-phase oxidation of naphthen-paraffin concentrate, separated from diesel fraction of Azerbaijani oils mixture with atmospheric oxygen in the presence of heterogeneous catalytic systems. As the catalyst aluminum nano-oxide modified by Cr ,Co, Mn transition metals was used. The oxidation was carried out in reactor of bubble type in the interval of temperature 135…140 ºС during 5 h. Their imidazoline derivatives were obtained by the use of the synthesized acids and polyamines, and the complexes were prepared on the basis of them and aliphatic monobasic acids (formic and acetic) at equal molar ratio. Their influence was studied on the kinetics of the corrosion process of C1018 steel samples in 1% solution of NaCl, saturated by CO2 at 50 °С. The complexes were tested as inhibitors of carbon dioxide corrosion at concentration of 25 and 50 ppm in 20 h. According to obtained data, the usage of different concentrations of complexes decreases corrosion rate and metal loss (up to 9…10 times). The values of surface coverage (θ) and the extent of inhibition efficiency (IE, %) of corrosion process of steel example in CO2-medium in presence of prepared complexes were calculated. IR spectra of surface layer of used electrodes were recorded before and after adding prepared complexes into corrosion medium. As a result of the studies it was determined, that the obtained complexes had high prospects for use (protection degree 97…98%) as CO2-corrosion inhibitors in suppressing of carbon dioxide corrosion of steel equipment.

Persistence of Carbon Dioxide Corrosion Inhibitors

CORROSION ◽  
2002 ◽  
Vol 58 (4) ◽  
pp. 354-363 ◽  
Author(s):  
R. De Marco ◽  
W. Durnie ◽  
A. Jefferson ◽  
B. Kinsella ◽  
A. Crawford
Keyword(s):  
Carbon Dioxide ◽  
Corrosion Inhibitors ◽  
Carbon Dioxide Corrosion

scholarly journals Theoretical and Methodological Problems of Emotional Intelligence Research in Children of Senior Preschool Age

2018 ◽  
pp. 129-139
Author(s):  
O. A. Tokareva ◽  
A. V. Seryy ◽  
A. I. Fedorov
Keyword(s):  
Emotional Intelligence ◽  
Preschool Age ◽  
Federal State ◽  
Mental Life ◽  
Intelligence Assessment ◽  
System Functioning ◽  
Methodological Problems ◽  
Methodological Approaches ◽  
Selection For ◽  
Selection Of

The research features various theoretical and methodological approaches to the study of emotional intelligence in children aged 5–7. The relevance of the issue can be explained by the current social mandate and the federal state standard of modern pre-school education. The paper focuses on an analysis of foreign and domestic approaches to the study of the psychological phenomenon in question. The authors come to a conclusion that emotional intelligence regulates the integral state of the human psyche and manifests itself at the physiological, psychological, and personal levels of its functioning. The article also includes a description of the study methods applied to senior preschoolers. The authors give a critical review of the methodological tools for emotional intelligence assessment in children aged 5–7, the results of which indicate the problem areas in the existing methods for diagnosing emotional intelligence. The paper describes the matters of criteria selection for evaluation and selection of adequate methods for studying. In conclusion, the authors point to the insufficientlystudied aspects of emotional intelligence and designate the theoretical and methodological problems of researching emotional intelligence in children of senior preschool age. Based on the results of the theoretical analysis, the authors propose to consider emotional intelligence as a dynamic system functioning at all levels of one’s mental life and justify the need to develop a comprehensive approach to its study from the standpoint of general, age and pedagogical psychology, psychophysiology, preschool pedagogy.

Local corrosion: calculation in oil field conditions (according to weight measurements)

2021 ◽  
Vol 26 (1) ◽  
Keyword(s):  
Carbon Dioxide ◽  
Maximum Rate ◽  
Oil And Gas ◽  
Gas Production ◽  
Oil Wells ◽  
Oil Field ◽  
Corrosion Monitoring ◽  
Carbon Dioxide Corrosion ◽  
Complicating Factors ◽  
Oilfield Equipment

Complications associated with a corrosive environment, according to Rosneft’s data at 01.01.2020, are among the prevailing at oil and gas production facilities and rank fourth among other factors complicating production – 12% the complicated mechanized wells. Failures due to corrosion are the second largest complicating factors. Based on the results of approbation, the article proposes a method for calculating the maximum rate of local carbon dioxide corrosion, applicable in oilfield conditions, including to complicated stocks of oil wells and pipelines of oil gathering systems. Based on the approbation results, a method for calculating the maximum rate of local carbon dioxide corrosion, applicable in oilfield conditions, including to complicated stocks of oil wells and oil-gathering pipelines systems is proposed in the article. The proposed technique is realizable according to the results one of «traditional» methods the corrosion monitoring - weight (or gravimetric). The approbation results and application possibility of the technique in the pilot tests process in assessing the protective ability of corrosion inhibitors and the selection of the effective dosages in relation to local damages, which are the main cause the oilfield equipment failures according the factor «Corrosive aggressiveness» (one of the complicating factors in terms of gradation, adopted in the Rosneft Company regulations). On practical examples the oilfield equipment operation, the results of corrosion monitoring and the summary statistics the corrosive stock of wells (using the example of an oil Company), the current situation with respect to this type of complication and relevance the issue under consideration is shown.

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