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Submit scientific paper, scientific publications, International Research Journal | Meždunarodnyj naučno-issledovatel’skij žurnal

ENGINEERING

ISSN 2227-6017 (ONLINE), ISSN 2303-9868 (PRINT), DOI: 10.18454/IRJ.2227-6017
ПИ № ФС 77 - 51217

CREATING A RATIONAL MODEL OF CONTROL METHODS OF GEO-PHYSICAL WELL LOGGING OVER THE DEVELOPMENT OF OIL AND GAS DEPOSITS

Posted in 2017, ENGINEERING, Issue № 9(63) September 2017 | 0 comments

The development of the oil industry is accompanied by gradual increase in oil production and the operating well stock. The share of watered reservoirs in wells that are in development for a long time is increasing due to the rise in the number of deposits. Under these conditions, there is a significant increase in the need for operational and systematic information necessary for the implementation of geological and technical measures and management of the development of oil deposits, which are obtained as a result of geo-physical well logging during their operation. Only geo-physical methods allow investigating the productive section of the well.

Specialists developed numerous models for the rational development of the deposit and for a detailed study of the forecasting of its characteristic features. It should be noted that the modeling of geo-physical well logging control over the process of deposit development is very rare. The following sequence of the mode is suggested: Collection of primary materials on collector layer, study of the relationship between geological, geo-physical and petrophysical rock parameters, mathematical representation of the model, determination of the main indices of the location development collecting additional information about the place of birth, etc.

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DEFINITION OF THE FIELD OF WORKING CAPACITY ON THE BASIS OF ALGORITHM OF CONTINUOUS SEARCHING OF ITS BORDER POINTS

Posted in 2017, ENGINEERING, Issue № 9(63) September 2017 | 0 comments

The article considers the ways of finding boundary points of the field of working capacity for technical systems. The secant method is described, assuming a continuous search procedure. An algorithm that allows expanding the sphere of application of the secant method is considered, as well as improving the search efficiency due to the analysis of a limited part of the secant, determined by the field of the working capacity itself. Quantitative estimates of the developed algorithm are given. The probabilistic characteristics of the secant method are considered and the evaluation of the area of its application is given. The results of the study are confirmed by the examples of practical implementation of the method applied to electrical systems.

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RESULTS OF INVESTIGATIONS OF QUALITATIVE INDICATORS OF THE PROCESS OF IR-DRYING TOMATO ON THE CONTENT OF ASORBINE ACID

Posted in 2017, ENGINEERING, Issue № 9(63) September 2017 | 0 comments

The article considers the classification of product quality indicators. The composition of fresh tomato is considered, and the determining indicator of the quality of tomatoes, ascorbic acid, is selected and justified. The nutritional value of dried tomatoes according to the USDA standard is presented, according to which the necessary content of ascorbic acid after drying was determined. The results of the experiment are presented in the form of a diagram of the analysis of the quality of dried tomatoes based on a comparison of the content of ascorbic acid (vitamin C) in samples obtained by different methods of infrared drying. The highest content of ascorbic acid after drying is observed in an infra-red drying plant of high-moisture biological raw materials with the use of a low-temperature film electric heater, which is more than 50% higher than the basic value of the USDA standard. Ascorbic acid was not detected in the dried “URAL-4” convection-radiation drying plant and dried with the use of natural solar drying by the manufacturing company of Uzbekistan.

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USING THE THEORY OF GRAPHS FOR FACE IDENTIFICATION

Posted in 2017, ENGINEERING, Issue № 9(63) September 2017 | 0 comments

The paper presents an original approach to solving the problem of determining graph isomorphism with the help of the face recognition system. The originality of the approach proposed in the article is based on the hashing of the graph structure, using the shortest distance between all vertices as the invariant characteristic of the graph. The Haar-like feature method is used to find the boundary points of the faces in the image. A SURF descriptor is used to read the calculation of the points’ characteristics on the image. Based on the calculated descriptor values, graphs are made.

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SOLUTION OF THE PROBLEM OF MODELING OF BUSINESS PROCESSES IN IT-COMPANY WITH THE USE OF THE PARTICLE SWARM METHOD

Posted in 2017, ENGINEERING, Issue № 9(63) September 2017 | 0 comments

The article discusses the problem of the most efficient allocation of programmers-applicants in a team in order to improve the quality of IT projects. When designing an intelligent information system and software for the allocation of labour resources in the IT team, it is proposed to use an approach based on the symbiosis of the classical resource allocation model and the particle swarm method (algorithm of bees’ colony). An integrated approach based on the concept of command roles of Belbin was first proposed as a diagnostic tool for filling the knowledge base of the expert system and the methodology of testing programmers to determine their qualifications and rating developed by the authors. The results obtained enable us to conclude that, with the optimal arrangement of programmers, applicants, the implementation of projects in the IT Company as a whole becomes much more effective overall.

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POSSIBILITY OF USING ARTIFICIAL INTELLIGENCE METHODS IN THE SOLUTION OF PROBLEMS RELATED TO ENVIRONMENTAL SECURITY

Posted in 2017, ENGINEERING, Issue № 9(63) September 2017 | 0 comments

The possibility of using artificial intelligence methods in the solution of problems related to environmental safety is shown on the example of the developed expert system of ecological safety of the hydrosphere. The project provides for the production of a hybrid system through the use of technologies of expert systems and artificial neural networks. The article substantiates the relevance of the project, lists the results of the first stage of product creation (identification stage), demonstrates the experience of the developers in related fields, and briefly describes the database of the expert system of environmental safety of the hydrosphere, created on the basis of previously developed and tested databases.

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EFFICIENCY OF VARIOUS FIBER TYPES APPLICATION IN CONCRETE

Posted in 2017, ENGINEERING, Issue № 9(63) September 2017 | 0 comments

The article considers the influence of various types of non-metallic fiber (polypropylene microfiber, polymer macro-fiber, fiberglass composite fiber) on the crack resistance of concrete. As a result of the tests, it was found that composite fiberglass fiber is the most efficient. Its application at the most effective dosages enables obtaining fiber concrete with an actual class of residual strength within 50% of the actual class of tensile strength in bending compared to a polypropylene microfiber and a polymeric macro-fiber, the values of which comprise 30%.

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ESTIMATION OF HIGH-PROTEIN PREPARATION “ZOOPROTEIN” AS FEED FOR CATS

Posted in 2017, ENGINEERING, Issue № 9(63) September 2017 | 0 comments

At present, it is urgent to find promising raw ingredients for fodder production. In this article, high-protein preparation “Zooprotein” is evaluated as dry food for cats used during their growth. It is proved that 100 g of this feed satisfies the daily requirement of the animal in nutrients and energy. The use of 100 g of “Zooprotein” when feeding cats during the growth period fully meets their need for protein, fat and energy and also covers their daily need for fiber, calcium and phosphorus. Based on the evaluation indices studied, “Zooprotein” can be recommended as a high-quality component in the composition of cat food during their growth.

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FEASIBILITY OF THE COMPENSATED NEUTRAL APPLICATION IN COMPARISON WITH ISOLATED NEUTRAL IN ELECTRIC TRANSMISSION LINES

Posted in 2017, ENGINEERING, Issue № 9(63) September 2017 | 0 comments

Experience has proven that at present overvoltage in the network at enterprises with a regular peak load is quite frequent as well as phase breaks on the ground or the circuit of one cable core due to icing wires. As a consequence, single-phase ground circuits occur in power lines. One of the solutions to this problem is the use of compensated neutral in these networks, i.e. the installation of an arc-suppression reactor. The article considers the expediency of using a compensated neutral in comparison with an isolated neutral with a single-phase circuit to the ground in power lines.

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ENERGY APPROACH TO THE ADAPTIVE AND SELECTIVE ASSEMBLY OF ELECTRO-TECHNICAL COMPLEXES OF OIL AND GAS PRODUCTION

Posted in 2017, ENGINEERING, Issue № 9(63) September 2017 | 0 comments

The article deals with the developed energy approach to the adaptive selective assembly of electro-technical oil and gas production complexes as an integral development of the theory of selective assembly, reliability theory and the theory of energy conversion by electrical complexes and systems.

The necessity of application of mathematical modeling of electro-technical complexes and systems as a set of interacting and mutually influencing elementary systems of different physical nature is shown. The problem under consideration is based on the preliminary analysis of the energy conversion processes in the electrical systems of oil and gas production in the subsystems.

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STUDY OF THE BEND OF THE SENSITIVE ELEMENTS OF THE PRESSURE SENSOR AT ITS LOCATION ON THE END WALL OF THE PIPE

Posted in 2017, ENGINEERING, Issue № 9(63) September 2017 | 0 comments

A mathematical model of the interaction between the liquid transporting pipeline and the pressure sensor is given for its location on the end wall of the pipe. The adequacy of the mathematical model “pressure sensor-pipeline” is checked. A full factorial experiment was used. The ranking of the pressure sensor parameters is shown depending on the medium to be contacted. The effect of the parameters of the fluid being transported and the pressure sensor on the change in the deflection of the sensing element of the device under consideration was investigated with the help of regression equations. The study showed that when selecting pressure sensors, it is necessary to take into account such parameters of the sensor as the Poisson ratio and the density of the sensitive element. It was also found that the density of the pumped liquid has the greatest influence on the deflection of the sensing element of the sensor.

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STUDY OF THE PROPERTIES OF BACKFILL SOLUTIONS MODIFIED BY METAL CHLORIDE

Posted in 2017, ENGINEERING, Issue № 9(63) September 2017 | 0 comments

The following article discusses the properties of oil-well slurries modified with the help of metal chloride. As the ultimate goal of drilling wells is the creation of a durable and strong isolated channel that connects the productive layer and the day surface, the study of the properties of modern oil wells is a relevant topic that has not yet been fully explored. It should be noted that when drilling wells, cementing materials used for fixing the walls of wells and separation of beds are crucial. The basis for the use of cementing slurry is their ability to structure and harden. Requirements for oil wells for cementing oil and gas wells are mainly determined by the geological and technical features of their wiring, which were also studied in the presented article.

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USE OF EXPERT ESTIMATES IN THE RANKING OF ACTIVITIES AIMED AT INCREASING THE LEVEL OF QUALITY OF MAINTENANCE AND REPAIR OF VEHICLES

Posted in 2017, ENGINEERING, Issue № 9(63) September 2017 | 0 comments

The article considers the application of the theory of the criteria importance to the multi-criteria choice of measures aimed at improving the quality level of maintenance and repair of vehicles. The use of the method of paired comparisons for obtaining and analyzing qualitative information about the importance of the criteria used in the system of voluntary certification of services in road transport is justified. An example of the choice of a set of measures aimed at improving the level of quality for a particular automobile service enterprise is given.

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NUMERICAL INVESTIGATION OF MAIN FEAURES OF ELECTROCHEMICAL DISSOLUTION AT PROCESSING BY POINT ELECTRODE-TOOL IN PASSIVE ELECTROLYTE

Posted in 2017, ENGINEERING, Issue № 9(63) September 2017 | 0 comments

The process of electrochemical processing is simulated with the help of the Schwarz solution of the complex potential in the parametric region in the form of a strip. On this basis, a numerical-analytical method for solving the problem is developed. This method allowed using experimental data, and namely, the non-monotonic dependence of a special type of current density on the anode potential. This explains the emergence of three-zones in the full-scale experiment on the treated surface: Active dissolution zones, zones of no dissolution of the corresponding falling dependence portion, weak dissolution zones corresponding to the low current densities.

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CHEMICAL STADIALITY AND STRUCTURAL FORMATION OF THE COMPOSITION OF Si3N4-TiN SYNTHESIZED IN THE SHS-AS СВС-Аз MODE

Posted in 2017, ENGINEERING, Issue № 9(63) September 2017 | 0 comments

The article considers chemical stadiality of the composition formation of Si3N4-TiNв in СВС mode with the use of sodium azide and halogenide salt of titanium (NH4)2TiF6. It is established that obtaining nitrides from the initial components in the combustion process requires the nitration of elemental silicon and atomic titanium and also decomposition reactions, dissociation, etc. The structure formation of the composition Si3N4-TiN is studied and it is established that the product synthesized from the system “9Si+(NH4)2TiF6+6NaN3” is a pure mixture of nanocrystalline equiaxial particles without side impurities TiN (28 %), nanocrystalline fibers α-Si3N4 (11 %) and submicrocrystalline column crystals β-Si3N4 (61 %).

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FOAM CONCRETE MODIFIED WITH MINERAL AND FIBER ADDITIVES

Posted in 2017, ENGINEERING, Issue № 9(63) September 2017 | 0 comments

The article contains the results of the study of effective modifiers for the preparation of foam concrete of natural hardening. Theoretical studies show that fiber additives increase the aggregative stability of the foam concrete mix. To increase the adhesion of additives with cement stone, it is suggested to use mineral additives, such as wollastonite and diopside. It is established that with the introduction of wollastonite and diopside, the average density of the material and the coefficient of thermal conductivity decrease due to an increase in gas-retaining and aggregative stability of the foam concrete mixture. It is shown that with the introduction of the recommended mineral additives, more complete hydration of Portland cement minerals occurs. The results of the research confirm that the foam concrete with additives of diopside and wollastonite for the thermal insulation of wall structures is economically feasible.

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STUDY OF THE INFLUENCE OF ELECTROMAGNETIC RADIATION ON THE RHEOLOGICAL PROPERTIES OF OIL

Posted in 2017, ENGINEERING, Issue № 9(63) September 2017 | 0 comments

At present, light oil reserves are depleted and mankind is forced to shift to hard-to-recover reserves. Pumping of such oils requires huge energy costs; therefore several methods of improving their rheological characteristics are used in order to reduce energy costs for pumping oil. This article analyzes three main ways to improve the rheological characteristics of oils and contains the results of laboratory tests of the effects of electromagnetic radiation on the properties of oil.

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ORGANIZATION OF PROTECTION OF OBJECTS OF OIL AND GAS TRANSPORTATION FROM FOREST FIRES

Posted in 2017, ENGINEERING, Issue № 8(62) August 2017 | 0 comments

The types of forest fires, and the methods of main pipelines laying are considered in this paper. It is noted that the possibility of the forest fire impact on the main gas pipelines, oil pipelines and oil product pipelines occurs in case of ground or soil fire spreading. At the same time, a grassland forest fire can have a high-temperature impact on pipelines laid over the surface, while an underground forest fire can have a negative effect on a pipeline laid underground, as well as supports and other structural elements of the linear part of the pipeline. A step-by-step implementation of measures to protect oil and gas transportation facilities from forest fires is proposed in the article. The stages of the implementation of the action plan to protect the objects of transportation of oil and gas from forest fires are considered.

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ELECTRIC BICYCLE AS A MEDICAL EXERCISE MACHINE

Posted in 2017, ENGINEERING, Issue № 8(62) August 2017 | 0 comments

The author justifies the need to control the level of stress exerted on the bodies of elderly people during regular cycling in the paper. A brief analysis has been carried out on whether such a possibility is provided by conventional or electric bicycles being currently used. The comparison of medical exercise bicycles, bicycles and bicycles with electric drive is given, the differences in their functional tasks are also analyzed. The author justifies the fact that the bicycle is not suitable for rehabilitating classes and offers its own hardware solution of this problem. The article describes the basic algorithm for the operation of this device and the theoretical calculation of its effectiveness.

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IMPACT OF THE FREQUENCY CONVERTER ON THE EFFICIENCY FACTOR OF THE INDUCTION MOTOR

Posted in 2017, ENGINEERING, Issue № 8(62) August 2017 | 0 comments

In this paper, we consider the question of frequency converter impact on the efficiency of an induction motor. We conducted full-scale experiments in the MATLAB and Simulink. We developed a simulation model that allows estimating consumed and useful power, cosφ, i.e., energy efficiency of an induction electric drive with sinusoidal voltage and voltage generated by pulse width modulation. According to the results of the study, it is established that the efficiency of an induction motor connected to the frequency converter is reduced by 3-7%, in contrast to the supply by pure sinusoidal voltage.

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