Investigation of the Effect of Microwave-Radiation Energy Flux on the Structure and Properties of Polymeric Insulating Materials

Абуталипова, Е. М.; Бугай, Д. Е.; Avrenyuk, A. N.; Strel’tsov, O. B.; Сунгатуллин, И. Р.

doi:10.1007/s10556-016-0177-6

Cited by 10 publications

(8 citation statements)

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“…газовой смеси, температура испытаний и общее давление в автоклаве, такой подход приводит к разночтениям при проведении испытаний [6,7], более подробно данная ситуация описана в [9,12]. С точки зрения получения сопоставимых результатов, получаемых в разных лаборато-риях, необходимо регламентировать концентрации растворенных газов в жидкой фазе.…”

Section: Referencesunclassified

The method to calculate concentration of CO2 and H2S in the liquid phase.

Yudin¹,

Abutalipova²,

Petrov³

et al. 2017

Nanotehnol. stroit.

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ExtEndEd AbstrAct:The article proposes the method to calculate the necessary concentration of dissolved gases in the liquid phase. It also deals with development of the computer program that could consider all the main parameters of the tests. The numerous mathematical calculations resulted in formulation of the method to calculate concentration of dissolved gases in the liquid phase. The implementation of the developed model in the form of the software product «Autoclave 2.1» is presented. The developed methodology for calculating the concentration of dissolved gases in the liquid phase is designed to perform accelerated tests that concern resistance of internal anticorrosive coatings of pipelines to aggressive media and explosive decompression, to intensify corrosion processes and to identify the main mechanisms and patterns of changes in the physical, mechanical and operational properties of coatings from hydrothermal influences of fishing environments.

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Section: Referencesunclassified

The method to calculate concentration of CO2 and H2S in the liquid phase.

Yudin¹,

Abutalipova²,

Petrov³

et al. 2017

Nanotehnol. stroit.

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“…В строительной практике широко используются расширяющиеся и напрягающиеся цементы, причем механизм расширения и химия процесса подробно освещены в литературе [6][7][8][9]. При этом все происходящие процессы можно увидеть, поскольку они проходят на поверхности.…”

Section: практика строительства нефтяных скважин показывает что примunclassified

“…Другой тип расширения -сульфоалюминатный -обеспечивается образованием в твердеющем цементном камне избыточного количества гидросульфоалюмината кальция (эттрингита), образующегося при взаимодействии продуктов гидратации алюминатных вяжущих и гипса [8]. Третий тип расширения -за счет применения газовыделяющих добавок -в практике строительства скважин неприемлем, поскольку при высоких давлениях образующийся газ может растворяться в поровой жидкости цементного камня.…”

Section: практика строительства нефтяных скважин показывает что примunclassified

Experimental research on reinforced lightweight plugging composites

Bekbaev¹,

Agzamov²,

Khafizov³

et al. 2017

Nanotehnol. stroit.

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ExtEndEd AbstrAct:Practical aspects of the well construction show that the use of conventional cementing materials do not always provide the necessary level of quality of well casing when the requirements to resources conservation are enhanced. This is true for such complex geological conditions as the alternation of beds with different formation pressures, low fracturing pressure gradients, drilling with ERD etc. The main problems in well casing under these conditions are the losses of cement slurries, low cement top, low-quality formation isolation, and as the result of this -the emergence of cross-flows.The high quality of well casing will be provided only by means of safe contact between cement stone and limiting surfaces (casing and rock), therefore to use expansion materials for cementing is a well-recognized method [1, 2]. Thus, it is obvious that their application does not give positive results for intervals with a thick filter cake or intervals with cavities, i.e. where space for expansion is greater than the magnitude of the expansion.At the same time it is very challenging to create high-quality cement in formations with abnormally low formation pressure or low fracture gradient. The 132 http://nanobuild.ru info@nanobuild.ru 2017 • Vol. 9 • no. 4 / 2017 • Том 9 • № 4 THE RESULTS OF THE SPECIALISTS' AND SCIENTISTS' RESEARCHES MAchinE-rEAdAblE inforMAtion on cc-licEnsEs (htMl-codE) in MEtAdAtA of thE pApEr References: 1. Danyushevsky V.S., Aliev R.M., Tolstykh I.F. Spravochnoe rukovodstvo po tamponazhnym materialam [Reference guide for oil wells]. 2 nd ed. Moscow, Nedra, 1987. (In Russian).solution of this problem is the use of lightweight cements, which scarcely expand while hardening. This is due to the fact that lightweight cement slurries are generally obtained by increasing the content of grouting fluid in the solution, resulting in increase of the distance between the crystal hydrates -hardening products, that leads to decrease of crystallization pressure of expansion agents on the space frame of the cement stone [3,4].Moreover, such works as secondary reservoir developing (perforation), well completion and fracturing operations create high dynamic load on the cement stone, which leads to its destruction. The stone can be completely destroyed, that often causes premature flooding of wells and incurring additional costs. In this regard, it is necessary to improve the formulation of oil-well cement in order to enhance the properties of the stone in relation to high dynamic loads. Thus, the crucial task is to create lightweight expanded cements with improved processing properties.

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“…As a result of the modification, the surface properties of the membranes change: wettability, porosity, roughness, pore size, conductivity. In recent years, the electromagnetic radiation of the microwave (microwave) range for the treatment of various materials has become widely used [23,24]. The most interesting is the so-called nonthermal modification of polymers, when the amount of EMR microwave energy absorbed by the substance does not lead to a significant change in the material temperature, but a significant change in the physicomechanical properties is observed.…”

Section: Introductionmentioning

confidence: 99%

“…The most interesting is the so-called nonthermal modification of polymers, when the amount of EMR microwave energy absorbed by the substance does not lead to a significant change in the material temperature, but a significant change in the physicomechanical properties is observed. The depth of penetration of microwave radiation into polymeric materials, according to the data given in [24], at the radiation frequency 2.45 GHz for polyvinylchloride ~ 10 cm, polyethylene terephthalate ~ 28 cm, polypropylene ~ 34 cm, polyethylene ~ 41 cm. A large depth of penetration of microwave radiation is sufficient to handle not only flat membranes but also rolled and tubular membrane elements.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Effectiveness of Separation of Emulsion by Processing Ptfe Membrane with Microwave Radiation

Фазуллин¹,

Kharitonova²,

Gimadieva³

et al. 2018

IJET

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In this work, in order to increase the productivity and degree of separation of petroleum emulsions, a modification of thin-film microfiltration membranes from polytetrafluoroethylene (PTFE) by ultrahigh-frequency (microwave) radiation in the decimeter wave band in air, nitrogen and argon was carried out. Treatment of membranes with microwave radiation leads to a reduction in the mass of PTFE membranes depending on the treatment time and the gaseous media. The membrane weight decreases most strongly to 0.17% when treated in atmospheric air, which is apparently due to the aggressive action of oxygen. The least mass of the membrane decreases when treated in argon, only 0.06%. The increase in the specific productivity of membranes during processing in the atmosphere of atmospheric air is explained by the hydrophilization of the surface, due to the formation of polar oxygen-containing groups. A decrease in specific productivity when treated in an argon inert gas environment occurs apparently due to crosslinking of the surface layer. Treatment of the membrane in a nitrogen medium increases the degree of emulsion separation by 6.9%, in air media by 15.3%, in argon media by 21%. An increase in the efficiency of separation of emulsions is also confirmed by a decrease in the size of oil particles in filtrates of emulsions. So the limiting size of the particles of the disperse phase cut off by the initial membrane was 118 nm, and the membrane treated with microwave radiation in the air medium was 39 nm, in the nitrogen medium 68 nm and in argon medium 10 nm.

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Investigation of the Effect of Microwave-Radiation Energy Flux on the Structure and Properties of Polymeric Insulating Materials

Cited by 10 publications

References 0 publications

The method to calculate concentration of CO2 and H2S in the liquid phase.

The method to calculate concentration of CO2 and H2S in the liquid phase.

Experimental research on reinforced lightweight plugging composites

Improvement of Effectiveness of Separation of Emulsion by Processing Ptfe Membrane with Microwave Radiation

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