Practice of Anticorrosive Protection最新文献_第3页

ELECTROCHEMICAL INVESTIGATION OF PROTECTION EFFECT OF MINERAL-POLYMER COATINGS ON STEEL FOR HOUSING AND COMMUNAL SERVICES 矿物聚合物涂层对住宅和公共设施用钢防护效果的电化学研究

Practice of Anticorrosive Protection Pub Date : 2021-12-01 DOI: 10.31615/j.corros.prot.2021.102.4-2

{"title":"ELECTROCHEMICAL INVESTIGATION OF PROTECTION EFFECT OF MINERAL-POLYMER COATINGS ON STEEL FOR HOUSING AND COMMUNAL SERVICES","authors":"","doi":"10.31615/j.corros.prot.2021.102.4-2","DOIUrl":"https://doi.org/10.31615/j.corros.prot.2021.102.4-2","url":null,"abstract":"The durability and protection effect of mineral-polymer coatings (MPC) on steel developed by SU-57 сompany for heat supply and housing and communal services facilities are determined. The thickness of the coatings is 150…700 μm. It is shown that MPC with a thickness of 150…500 μm in network water at 95 °C are resistant, when kept for 1…8 days, an increase in their mass is observed due to the overgrowth of MPC pores with hardness salts, corrosion products and hydroxides, which is confirmed by micrographs of the MPС surface. The outer layer of the MPC with a thickness of 700 μm is more porous and undergoes the dissolution under these conditions at an insignificant rate. According to the results of determination of the corrosion rate of steel with MPC (by the method of linear polarization resistance) in 3% NaCl at 20° and 95 °C, as well as in network water at 95 °C, coatings with a thickness of 500 and 700 μm have the highest protective ability, 82…89%, the porosity of the coatings is 11…18%. MPP on steel has ahigh adhesion. The optimal thickness of the MPP for the protection of heat supply and housing facilities according to 11…18%. MPC on steel has a high adhesion. The optimal thickness of the MPC for the protection of heat supply and housing facilities according to the results of the work is 500 μm.","PeriodicalId":20323,"journal":{"name":"Practice of Anticorrosive Protection","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77872191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

HEAT PIPES WITH POLYURETHANE FOAM INSULATION IN PUBLIC UTILITIES 公用事业用聚氨酯泡沫隔热热管

Practice of Anticorrosive Protection Pub Date : 2021-12-01 DOI: 10.31615/j.corros.prot.2021.102.4-5

引用次数: 0

MEDIUM FOR LOCAL CO2-CORROSION LABORATORY TESTING 介质用于当地二氧化碳腐蚀实验室测试

Practice of Anticorrosive Protection Pub Date : 2021-12-01 DOI: 10.31615/j.corros.prot.2021.102.4-1

引用次数: 0

THE USE OF GIS TECHNOLOGIES AND AEROSPACE SURVEY MATERIALS FOR THE ANALYSIS OF PIPE DEFECTS IN MAIN OIL PIPELINES AND THE SOURCES OF THEIR OCCURRENCE 利用gis技术和航空航天测量资料对主要输油管道的管道缺陷及其发生原因进行分析

Practice of Anticorrosive Protection Pub Date : 2021-06-01 DOI: 10.31615/j.corros.prot.2021.101.3-2

引用次数: 0

ESTIMATION OF BACTERICIDAL EFFICIENCY OF THE «UNIKO-N» REAGENT REGARDING SULPHATE REDUCING BACTERIA IN OIL FIELD WATERS uniko-n试剂对油田水中硫酸盐还原菌的杀菌效果评价

Practice of Anticorrosive Protection Pub Date : 2021-06-01 DOI: 10.31615/j.corros.prot.2021.101.3-3

{"title":"ESTIMATION OF BACTERICIDAL EFFICIENCY OF THE «UNIKO-N» REAGENT REGARDING SULPHATE REDUCING BACTERIA IN OIL FIELD WATERS","authors":"","doi":"10.31615/j.corros.prot.2021.101.3-3","DOIUrl":"https://doi.org/10.31615/j.corros.prot.2021.101.3-3","url":null,"abstract":"The article presents the results of a study of the effectiveness of the new generation UNIKO-N-60 reagent and its modifications which do not contain salts of quaternary ammonium compounds (QAC), for inactivation of sulfate-reducing bacteria (SRB) in the pumped liquid at the ASHIT Oil and Gas Production Department-1 of JSC «Belkamneft» named by A.A. Volkov. Comparative data have been obtained on the assessment of the effectiveness when changing the dosage of the reagent on SRB cultures of two field facilities of the UKPN ASH IT and RVS-13 UKPN ASHIT. The obtained data indicate that the samples of the UNIKO-N exhibit high efficiency. The suppression of the growth of SRB by the samples of UNIKO-N occurs at a low dosage of 5 g/m3. The effectiveness of the reagent was not changed when the dosage was increased to 100 g/m3. Their higher efficiency is shown in comparison with the base reagent. It is noted that reagents of the UNIKO-N series based on high molecular weight polymer compounds have biocidal activity against all types of bacteria, including SRB, viruses and fungi, while simultaneously exhibiting the properties of corrosion inhibitors. It has been established that UNIKO-N polymer compositions protect St3 steel from general corrosion in mineralized water in the absence of hydrogen sulfide at a minimum dosage of 0,4 to 4,0 mg/l. Modifications of the UNIKO-N reagent have been developed and tested, having different freezing points, concentrations of active components and various functional additives, depending on the needs of a particular consumer. The usage of reagents of new generation for inactivation of SRB in petroleum production engineering not containing in its composition QAC permits to eliminate their negative influence on state of equipment and pipelines.","PeriodicalId":20323,"journal":{"name":"Practice of Anticorrosive Protection","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89496089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

QUALITY INDICATORS OF TRANSPORTED WATER AS PERFORMANCE OF CORROSION PROCESSES ON THE INNER SURFACE OF THE WATER PIPELINE 输水质量指标为输水管道内表面腐蚀过程的表现

Practice of Anticorrosive Protection Pub Date : 2021-06-01 DOI: 10.31615/j.corros.prot.2021.101.3-1

{"title":"QUALITY INDICATORS OF TRANSPORTED WATER AS PERFORMANCE OF CORROSION PROCESSES ON THE INNER SURFACE OF THE WATER PIPELINE","authors":"","doi":"10.31615/j.corros.prot.2021.101.3-1","DOIUrl":"https://doi.org/10.31615/j.corros.prot.2021.101.3-1","url":null,"abstract":"In the presented work, the content of iron and dissolved oxygen in the transported water of the “Astrakhan-Mangyshlak” pipeline and the applicability of these indicators as measure of corrosion processes are studied. From the results of studies, it follows that the oxygen concentration in water is decreased along the length of the water pipeline. The main amount of dissolved oxygen is consumed for the processes of bio- and electrochemical corrosion of the inner surface of the water pipeline. The iron content in the source water is varied in the range of 0,1...0,5 mg/l. An increase in the concentration of iron in the transported water along the length of the water pipeline indicates corrosion processes and the removal of iron in the form of hydroxide. The distribution of the corrosion inhibitor along the length of the water pipeline was studied based on the concentration of polyphosphates in water samples and the presence and concentration of phosphoruscontaining compounds in the samples of corrosive deposits. The concentration of polyphosphates along the route of the water pipeline is decreased, due to their consumption for the formation of phosphate compounds with polycovalent cations and the formation of a protective film on the inner surface of the water pipeline. The identification of phases on the electron diffraction patterns and elemental analysis of corrosion deposits taken from template samples in different sections of the water pipeline also showed the presence of phosphoruscontaining compounds in various concentrations.","PeriodicalId":20323,"journal":{"name":"Practice of Anticorrosive Protection","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89240304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrosion of downhole equipment in hydrogen sulfur-containing environments 井下设备在含氢含硫环境中的腐蚀

Practice of Anticorrosive Protection Pub Date : 2021-05-31 DOI: 10.31615/j.corros.prot.2021.100.2-1

{"title":"Corrosion of downhole equipment in hydrogen sulfur-containing environments","authors":"","doi":"10.31615/j.corros.prot.2021.100.2-1","DOIUrl":"https://doi.org/10.31615/j.corros.prot.2021.100.2-1","url":null,"abstract":"Complications associated with the corrosive environment, according to JSC Orenburgneft, NK Rosneft for the period 01.01.2021, are among the prevailing ones at oil and gas production facilities and share the 1st place with the scaling factor - 26% of the complicated mechanized well stock. Downhole equipment failures due to corrosion account for 20% of the total number of fixed failures in 2020. By the type of exposure to a corrosive environment at the fields operated within the perimeter of Rosneft, JSC Orenburgneft, hydrogen sulfide and mixed corrosion (caused by simultaneous action of CO2 and H2S) are predominant. The article presents the calculated data on the physicochemical characteristics of aqueous solutions of H2S. The existing approaches for description of the mechanisms of hydrogen sulfide corrosion of oilfield equipment with examples of corrosive destruction at producing string are described A dynamic matrix of the various protection technologies and their applicability in hydrogen sulfide-containing environments is presented, which is used in the fields operated by PJSC NK Rosneft and filled according to the results of laboratory and pilot field tests. The criterions of attribution of equipment to abnormal fund on basis of classification of factors complicated exploitation and following determination of equipment category being used in localized norms of NK Rosneft are described.","PeriodicalId":20323,"journal":{"name":"Practice of Anticorrosive Protection","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72968907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hastelloy G 35 сorrosion tests for intergranular corrosion resistance 哈氏合金g35 <s:1>耐晶间腐蚀试验

Practice of Anticorrosive Protection Pub Date : 2021-05-31 DOI: 10.31615/j.corros.prot.2021.100.2-2

{"title":"Hastelloy G 35 сorrosion tests for intergranular corrosion resistance","authors":"","doi":"10.31615/j.corros.prot.2021.100.2-2","DOIUrl":"https://doi.org/10.31615/j.corros.prot.2021.100.2-2","url":null,"abstract":"The article is devoted to the analysis of corrosion behavior and assessment of the resistance of Hastelloy G 35. Nickel-based alloys (steels) containing chromium, molybdenum, tungsten, possibly iron are widely used as materials for the manufacture of equipment in high-temperature technological processes using solutions of highly hygroscopic halides (chlorides) in molten halides (chlorides) of alkali metals. During the operation of the equipment, the instability of the surface of apparatus and pipelines to corrosion is determined. In this test, 4 samples of 80×20×3 mm were used, of which 2 samples were subjected to provoking heating, and 2 samples were examined in their normal state. Our tests were carried out in a boiling aqueous solution of iron sulfate and sulfuric acid for 48 ± 0.25 h. Further, the bent samples were examined using an MBS-9 microscope with a magnification of х8. The results of corrosion tests are also presented. As a result of the study, the rate of penetration of corrosion of the alloy was calculated. Hastelloy microstructure is presented. The average depth of destruction was determined from the six maximum values detected in six fields of view. According to the research results, the corresponding conclusions were made.","PeriodicalId":20323,"journal":{"name":"Practice of Anticorrosive Protection","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85573886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Local corrosion: calculation in oil field conditions (according to weight measurements) 局部腐蚀:在油田条件下计算(根据重量测量)

Practice of Anticorrosive Protection Pub Date : 2021-03-01 DOI: 10.31615/j.corros.prot.2021.99.1-3

{"title":"Local corrosion: calculation in oil field conditions (according to weight measurements)","authors":"","doi":"10.31615/j.corros.prot.2021.99.1-3","DOIUrl":"https://doi.org/10.31615/j.corros.prot.2021.99.1-3","url":null,"abstract":"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.","PeriodicalId":20323,"journal":{"name":"Practice of Anticorrosive Protection","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85695996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Protective properties of superhydrophobic coatings on copper and steel obtained by electrochemical method 电化学法研究超疏水涂层对铜和钢的保护性能

Practice of Anticorrosive Protection Pub Date : 2021-03-01 DOI: 10.31615/j.corros.prot.2021.99.1-1

{"title":"Protective properties of superhydrophobic coatings on copper and steel obtained by electrochemical method","authors":"","doi":"10.31615/j.corros.prot.2021.99.1-1","DOIUrl":"https://doi.org/10.31615/j.corros.prot.2021.99.1-1","url":null,"abstract":"Superhydrophobic coatings are obtained by cathodic deposition of copper or nickel on a copper plate with treatment with an ethanol solution of highest carboxylic acids with a long hydrocarbon radical simultaneously or sequentially. They are characterized by a contact angle of water wetting of the order of 155...160°.These coatings protect the copper substrate from corrosion in conditions of 100% humidity for 100...180 days, while maintaining the contact angle within 152…154°. There is no mass loss. The influence of the reversal of the current during electrolysis on the value of the contact angle of wetting is investigated. SEM images of superhydrophobic coatings are presented, indicating multilevel roughness. Superhydrophobic coating on carbon steel is obtained by cathodic deposition of nickel and subsequent surface treatment in an ethanol solution of myristic acid and annealing at 60° for two hours. The influence of the duration of electrolysis on the value of the contact angle of wetting is estimated. Its value is in the range of 151…154°. Exposure of a coated steel plate for 50 days in conditions of 100% humidity is characterized by the absence of weight loss and maintaining the contact angle up to 154°.","PeriodicalId":20323,"journal":{"name":"Practice of Anticorrosive Protection","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86393907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0