Table of contents

International Symposium on Engineering and Earth Sciences: Applied and Fundamental Research dedicated to the 75th anniversary of professor Abdul-Hamid Mahmoudovich Bisliyev (ISEES 2020)

These conference proceedings include peer-reviewed original research papers of the 2020 International Symposium on Engineering and Earth Sciences (ISEES) that was held on 28-29 February 2020, in Grozny, Chechen Republic, Russia.

The event was dedicated to the 75th anniversary of the renowned Chechen scientist and enlightener, professor Abdul-Khamid Bisliev. Doctor of science Abdul-Khamid Bisliev is known for his outsanding expertise in magnetic fields physics. As a research fellow graduated from Moscow State University he had continued his scientific career in Grozny State University. As a globally recognized scientist and university manager he established a state-of-art physics lab in Grozny shortly after. Professor Bisliev tragically died in Grozny in course of a civil war, while protecting his colleague assaulted by armed villians.

All papers published in this volume of IOP Conference Series: Materials Science and Engineering have been peer reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing.

□ Type of peer review: Single-blind peer review with the mandatory spell and style check

□ Conference submission management system: submissions were received and handled via e-mail

□ Number of submissions received: 117

□ Number of submissions sent for review: 111

□ Number of submissions accepted: 78

□ Acceptance Rate (Number of Submissions Accepted / Number of Submissions Received X 100): 70%

□ Average number of reviews per paper: 2

□ Total number of reviewers involved: 18

□ Any additional info on review process: the core of the review team is comprised from educators and researchers from universities and research institutions in the Chechen Republic

□ Contact person for queries: Ali R. Salgiriev, secretary of the meeting, 010585@list.ru

When underground laying, the pipeline bends in accordance with the terrain under the influence of its own weight and an overlying layer of soil. The article provides calculations of the radius of curvature of the pipe and its comparison with the allowable one. Thus, it can be seen from the above calculations that the obtained radii are less than the minimum permissible radius of curvature. Calculations showed that the radii in the horizontal and vertical planes are acceptable.

There is a huge variety of materials and technologies used in the implementation of construction and restoration work. They are also used in the construction of roads. It is impossible to consider all their varieties and give them a description. Therefore, we consider only the most effective in our opinion. This article describes and reviews some types of modern building materials and technologies used in the restoration of roads. Some varieties of these materials are listed. Their brief description is given. Their advantages and disadvantages are considered. The introduction contains the significance of materials in construction work. The optimal and most economical materials to use are listed in the summaries and conclusion. Certain types of materials and technologies are described in the article.

Wastewater of many types of industries contribute to the entry into open water bodies of toxic organic compounds, the concentrations of which in some cases exceed the Maximum Permissible Concentration for Water in Commercial Fishery Reservoirs. Typical representatives of toxic organic pollutants in the aquatic environment are aromatic nitro and amino compounds. Currently, a significant number of wastewater treatment methods have been developed. One of the most promising methods of water treatment are adsorption methods. Of considerable interest is the use of natural clay minerals as sorption materials for wastewater treatment. The object of the study is model solutions of nitro and amino compounds, the adsorption of which was studied on different versions of modified bentonites. In this work, the adsorption capacity of modified bentonite with five different acid activation variants upon extraction of n-dinitrobenzene and o-phenylenediamine from solutions was studied. The adsorption parameters of the studied variants of bentonite, such as the adsorption value G, mg/g; interfacial distribution coefficient Kd, mg/dm³; degree of adsorption recovery S, %. The constructed adsorption isotherms made it possible to identify the most effective variants of modified bentonite with additional activation by acid to extract aromatic nitro and amino compounds from solutions. The best adsorption ability upon extraction of p-dinitrobenzene from a solution was shown by glycerin-modified bentonite, subjected to heat treatment at 550 °C, the average fraction of granules, after activation with 9 % HCl solution and 30 % CaCl₂ solution. The best adsorption ability upon extraction of o-phenylenediamine from a solution was shown by glycerin-modified bentonite, subjected to heat treatment at 550 °C, the average fraction of granules, after activation with 18 % HCl solution and 38 % CaCl₂ solution.

On of metered-dose drops of various concentrations on a substrate of variable composition. The basis for the substrates and droplets is the contact melting (CM) method related to state diagrams which are used to study the concentration dependence of surface characteristics (spot shape and size, wetting and spreading, surface tension, etc.) under the same conditions which improves accuracy of the characteristics. It was found that the microstructure of the transition zone of the substrate-drop depends on the location of the drop on the substrate, i.e. on the concentration of the substrate.

The mathematical laws of kinetics of the liquid zone growth under the contact melting of binary metal systems in the presence of constant electric current were described; the analytical and graphic solutions to this problem explain the experimental data.

Ways to improve quality of composite materials, in particular, physical and physico-mechanical properties of nanostructured building polymer composites are described. Applications of polymer additives and superplasticizers for improving technological properties of composites are described. The main tasks of improving polymer composites are determined. The effect of surfactants on the properties of high-strength composites is identified. The dependence of the strength of cement stone on porosity is identified.

For experimental studies, chemically active aggressive media pumped by single-screw metering pumps (SSMP) were used. The effect of these media on the destructive compressive stress, tensile strength, elongation, hardness, degree of swelling, antifriction properties and wear resistance of the polymer composite material Maslyanite D (S-1) was studied. It was established that hardness and antifriction properties of Maslyanite D (S-1) are better than those of SKN-26-based rubber 8470.

The phase diagram of the stable tetrahedron NaCl – KCl – PbCl2 – PbWO4 of the quaternary reciprocal system Na, K, Pb // Cl, WO4 was first studied using methods of differential thermal analysis. Its phase diagram was triangulated and stable triangulating internal sections of NaCl – PbWO4 – KCl.2PbCl2, NaCl – PbWO4–2KCl. PbCl2 and obtained tetrahedra NaCl – PbCl2 – PbWO4 – KCl.2PbCl2, NaCl – KCl – PbWP4, and NaCl – KCl – PbWP4. There are coordinates of three quadruple invariant points revealed.

There is a topology of the four-component reciprocal system Li, K, Pb ǁ Cl, WO4, its phase diagram was triangulated and stable tetrahedra revealed, the dominant chemical reactions of mutual exchange and complexation were determined. There are chemical synthesis of lead tungstate and lead oxide tungsten bronzes in ionic melts of the Li, K, Pb ǁ Cl, WO4 system carried out. A synthesis technology for lead tungstate in ionic melts is proposed based on the results.

The Nickel (II) ion forms many stable complexes as predicted by the Irving Williams series. This experiment is about preparation and stereochemistry of nickel phosphine complexes. The nickel phosphine complexes, which were prepared are NiBr₂(PPh₃)₂ and NiBr₂(PCy₃)₂. The first part of the experiment is to prepare the nickel complexes. After preparing nickel phosphine complexes NiBr₂ (PPh₃)₂ and NiBr₂ (PCy₃)₂, the complexes have been analyzed for structural determination. The complexes were analyzed by the Magnetic Moments of solids-The Johnson Matthey Balance, UV-visible (electronic spectra), Infrared spectra (normal range) and Far-infrared spectra (which were supplied in the practical booklet).

The process of quenching a flame of liquid hydrocarbons by suspensions of water with carbon nanostructures is studied. It is shown that the dispersion of carbon nanostructures in water intensifies heat transfer in liquids, which leads to their more rapid heating to boiling temperature under conditions of thermal exposure to a flame. During the experiment, it was found that the quenching time of liquid hydrocarbons by nanosuspensions is on average 3.5–5.0 times less than the time of quenching of a liquid with finely divided water.

The paper is devoted to one of the largest deposits of the North Caucasus, i.e. Starogroznenskoye field. There are identified the main development stages of this field, i.e. well production, development of the Miocene and Mesozoic deposits, and the current stage. Well production continued almost until the end of the 19th century. At the Miocene stage, the production was carried out from thrust and subthrust sand formations of Karagan and Chokrak. The paper also mentions the experimental adit on Mamakayevskaya gill. Which was headed by mining engineers A.A. Klushin and A.E. Yeronin. The beginning of the Mesozoic stage dates to the end of the 1940s. The main production was associated with the Upper Cretaceous sediments. At the end, an assessment of the current state of the structure of proven reserves is given. In conclusion, an assessment of the opportunities aimed at further development of the field associated with the additional exploration and additional development of the Miocene and Lower Cretaceous deposits is given.

Dry mixtures are widely used in modern construction. Development of new modifying agents for improving of dry mixtures performance characteristics and increasing its economic efficiency is an important problem. The paper presents study results of the effect of additives based on thermo modified peat on properties of cement mortars. It is established that introduction of additives in the mortars compositions provides improving of their strength and deformation properties.

The article presents the results of compiling and solving a system of multidimensional differential correlation equations of probability densities for identifying colloidal silver nanoparticles on polyester fibers with multidimensional correlation components of Raman polarization spectra. A method is proposed for increasing the accuracy and speed of identification of silver nanoparticles on polyester fibers, taking into account the longitudinal and transverse polarization of laser radiation over the entire range of the Raman spectrum with the analysis of two peaks sequentially and in order at the same time along the X-side and along the Y-side of the fibers. To implement the method, a program was developed in the Mathcad software. When solving the system using the nonlinear quadratic and differential equations with respect to XY, the probability density equations of distribution ellipses obtained very high accuracy p0 and p1 up to 10⁻¹⁶.

The article presents the results of studying particle size distribution of sediments in the beach areas of the Karadag coastal area of the Crimean peninsula. In the framework of this study, this area is considered as a lithodynamic system. The paper describes the connection between the granulometric structure of sediments and external processes that affect this system, which is an important indicator of response of the condition of a coastline to dynamic environmental conditions. It is established that the wave processes, exogenous geological processes (mainly of a gravitational nature), abrasion of cliff and bench result in the transportation and accumulation of beach sediments along the coast, as well as determine the peculiarities of their distribution according to particle size distribution. Based on the particle size analysis, the differentiation of beach sediments along the coastline of Karadag is revealed. When calculating the static parameters of the particle size data, the morphodynamic conditions of distribution of sediments in the coastal area are characterized.

The work is devoted to a method that makes it possible to level the influence of sedimentation on the surface tension of slurry. To do so the methods for measuring surface tension are used, where the sedimentation process is multidirectional relative to the surface under study. An analysis of the results shows that the proposed method can virtually eliminate the influence of sedimentation on the surface tension of dispersed systems with low kinetic stability. Using the proposed method, the concentration dependence of the surface tension of aqueous slurries of bentonite in the range of 0–20 mass% of the solid phase is studied.

The main methods for producing 4H-SiC single crystals and films of its solid solutions are considered. A new technique for producing single crystals of SiC polytypes is described. A new nonlinear model of the Schottky barrier height (BS) has been developed, and the current-voltage characteristics of Schottky diodes have been obtained, their comparison with the I–V characteristics of silicon-based diodes has been made.

It was found that at the stage of fast spreading (τ≤ 0,02c) at constant driving force within the wetting perimeter, the following exerts the main impact on the spreading kinetics: inertial forces that prevent spreading and change their sign when the speed slows, viscous resistance forces, the influence of which increases in proportion to the growth of the thickness of the boundary layer and vertical forces, which begin to appear when the spreading velocity slows down.

The study proposes the self-consistent theory that combines an activation model, a free volume model and a cluster model. The theory makes it possible to explain why the flow of fluid in slip conditions requires extremely minimal tangential stresses and describes the real structure of the fluid in the boundary layer, as well as to explain why the fluid is almost not squeezed out of the capillary gap.

The aim of the work is to review technology for assessing and modeling quality of the environment in industrial zones, the emission of pollutants into the atmosphere based on geographic information systems and environmental modeling taking into account environmental monitoring data. The article presents results obtained by using Geoscan 201 for simultaneous shooting with a Thermophrame-M thermal imager and a visible range camera.

A brief overview of the proposed method of processing and interpretation of well logging data in Terrigenous deposits. And also presents results of data well survery with its application using the example terrigenous deposits Tersko-Sunzhensky petroleum region. The findings suggest that the interpretation of the results of the GIS, as described TABC gives accurate information to determine geological characteristics and hydrocarbon saturation Lower Cretaceous terrigenous deposits of the Tersko-Sunzhensky petroleum region.

The paper considers the issues of well reliability indicators (strength, durability, safety) determined using the results of geophysical prospecting of the technical condition of the support as initial data. It is shown that it is possible to establish (recognize) the technical condition of bearing elements of well support, if according to the results of instrument studies, the types of damages are identified, their dimensions are established and actual strength parameters are calculated. Forecasting of service life is connected with the identification of a support element limiting service life of wells and determination of dominant mechanism of its damage for predicted operation period. The definition of well safe operation life is connected with the development of well reliability system. An example of elements included in the well reliability system is given, each of which is assigned a corresponding significance factor. The evaluation algorithm of the impact of properties of reliability system elements on its safe operation life is shown.

It is impossible to get a truthful overview of the strain-stress state of any object using the methods recommended by the current regulatory documents to determine the roll of buildings and structures. This paper implements the proposed method of determining the set of roll values by vertical sections of the object. Such a method allows obtaining a detailed picture of deformations, on the basis of which it is possible to develop a qualitative project to restore its design geometry. The paper presents the implementation of methods for determining the complex of values of building rolls with both classical and hinged ventilated facades. The rolls were determined according to 17 vertical sections (9 measurement cycles in total) for a building with a classic facade and 53 vertical sections (53 measurement cycles in total) for a building with a hinged ventilated facade. The results are presented in graphical and tabular form.

It is impossible to get a truthful overview of the strain-stress state of any object using the methods recommended by the current regulatory documents for determining deformations. This paper implements the proposed method of determining the spatial geometry of an object. Such a method allows obtaining a detailed picture of deformations, on the basis of which it is possible to develop a qualitative project to restore its operational reliability. The rolls were determined according to 38 vertical sections (9 measurement cycles in total) for a building with a classic facade and 53 vertical sections (2 measurement cycles in total). Besides, five cycles of determination the settlement of structure were performed. The trigonometric leveling was used to control the horizontal position of different level building structures (top of window aperture of the 2^nd floor). Elevations of horizontal building structures were determined in different conditional systems of heights. Elevations of horizontal building structures were determined in a single conditional system of heights. The results of the method are presented in graphical and tabular form.

The paper considers the development methods of a digital surface model and a digital terrain model of the Dead City territory. The work utilizes the Phantom 4 PRO UAV with high flight stability and excellent shooting quality (camera 20Mg/px) with 4K resolution that allows creating qualitative DSM, DTM with a possibility of storage, processing, transfer on various platforms in different formats.

The paper considers methods of observation over foundation settlement of buildings and structures on the southern slope of the Veduchi Ski Resort and its accompanying infrastructure. The study was carried out from control stations via geometric levelling of the II class. Based on the results of two observation cycles, the settlement values were obtained, all buildings and structures settled within 0.4–2.2 mm. Based on the data on the limit permissible values presented in the paper it can be concluded that buildings and structures on the southern slope of the Veduchi Ski Resort and its accompanying infrastructure are within the permissible settlement values.

The article describes a method for designing a cable robot used for moving goods under special conditions. It is a parallel structure mechanism using the NX CAD / CAM / CAE system controlled by the Teamcenter PLM system. The mechanism is a rigidly fixed frame connected by tensioned ropes to a platform containing an axial displacement device. The diagram of the device is presented. To develop an electronic-digital model of the robot, the control structure that allowed for designing using the "Top-Down" method was built. The control structure reduces time required to develop a model. The spatial parameters of the device were determined. The product concept was developed.

The work contains data on tectonic structure, modern geodynamic activity and materials on the study of negative exogenous processes obtained as a result of the development of oil fields located on the urban land. The analysis of geodynamics of the Tersko-Sunzhen structure located in the central part of the Tersko-Caspian deflection was performed. The history of the formation of this tectonic zone is long and diverse and is determined by its fault-block tectonics. At the present stage, the territory is also defined as geodynamically active, consisting of blocks bounded by faults and fractures, which are characterized by intense movements of the earth's surface. Stress unloading is expressed in the deformation of rock massif and in case of rapid (stepwise) unloading of tectonic stresses – through earthquakes. A special condition is that Starogroznenskoe and Oktyabrskoe oil fields are located on the territory of the city. To date, the cumulative production amounted to more than 150 million tons of oil. Long-term development of deposits led to equilibrium disturbances of the geological environment with significant change of formation conditions and accordingly to the development of hazardous geodynamic processes.

The paper describes features of calculating the magnetization of solid solution based on statistical approach on the example of a one-dimensional crystal. Calculations are made in approximation of Weiss effective field. The result shows the error of the third Gilleo hypothesis, which is still widely used to forecast the magnetic properties of solid solutions.

The improvement of geological efficiency of marine seismic survey implies continuous improvement of the entire technological complex used in water areas. This is typically accomplished by using complex linear or spatial non-uniform compressed-air groups. In the development of such sources, in addition to solving a number of purely technical problems related to their placement on board the ship and safe operation, one of the most difficult tasks is to determine the initial requirements for selection of the main parameters of the group, such as the volumes of working chambers sources and geometry of their grouping, as well as other factors determining amplitude, time and frequency of emitted acoustic signals. This study considers the main principles of grouping the compressed-air sources for marine seismic survey. It is shown that the most important factors determining the choice of source parameters and specific research technology include the nature of geological tasks and seismic conditions, which primarily depend on the sea depth in the study area. A simple method of calculating the configuration of linear subgroups with fluctuation suppression is described, as well as examples of building linear and spatial groups based on them with pronounced directional properties are considered.

The paper considers the problem of using technogenic products in the production of construction materials thus obtaining ceramic products with specified properties both in Russia and abroad. It provides data on chemical and mineralogical composition of initial raw materials, defines pre-calcination and calcination properties of clay and nickel slag. Compositions with different percentage of clay/slag are developed and two-factor experiment is carried out, where the first factor is the percentage of slag in a sample, while the second factor is the sintering temperature of samples. The diagrams show the influence of material composition of clay/slag charge mixture on compression strength, water absorption and density of test samples after firing at a temperature of 900, 950, 1000 and 1050 °C. The obtained results allowed identifying the need for sintering of masses from clay of Khalilovsky deposit with nickel slags of OAO Yuzhuralnickel of Orenburg Region in the production of ceramic brick.

The paper considers the unique properties of conducting carbon fiber composite: specific resistivity at different directionality of layers and critical energy of layering and destruction on the basis of experimental data. High mechanical strength and low specific gravity are noted, allowing its use in aircraft engineering to improve aircraft tactical and technical data of aerial vehicles. Strong anisotropy of electrically-conductive properties affects current spreading through carbon fiber and leads to significant destruction of the material. Theoretical analysis of lightning current spreading along anisotropic-conducting material in the form of extended plate was carried out on the basis of two proposed models of carbon fiber destruction by lightning currents. For the first continuum model an exact analytical solution to the Laplace equation with Neumann boundary conditions via the Greenberg method was found. The criteria for composite destruction was found, and the radius and depth of destruction of a conductive material by lightning current were calculated. Layer-by-layer destruction is considered on the basis of carbon fiber equivalent circuit. The strong anisotropy of the material resulting in the release of full energy in the first layer is taken into account. It is shown that the destruction of the top layer changes the distribution of currents over the remaining layers. The results of numerical modeling of layer-by-layer destruction of carbon fiber for different number of layers are given. The conclusion on the application of criteria to forecast the lightning effects and optimize lightning at the stage of aircraft design is made.

This paper presents a comparative study of the aggregation properties of P- and N-functionalized calix[4] resorcines in "water/oil emulsion + Desulfobacter culture". It has been shown that both compounds under study displayed aggregation properties in low concentration range. Nevertheless, their structural features affect the aggregation process. Moreover, the beginning of aggregation of N-functionalized calix[4]resorcine with petroleum hydrocarbons molecules and microorganism cells shifted to lower concentration zones than the one of P-functionalized calix[4]resorcine. However, P-functionalized calix[4]resorcine was characterized by a wider interval at which the structuring of the water/oil emulsion is observed.

A new methodology has been developed for determining the volumetric coefficients of internal mass transfer according to the results of an experimental study. The values of volumetric coefficients of internal mass transfer were calculated and their dependence on the technical characteristics of the regeneration process of the sodium-cation exchange filter under dynamic conditions was established. A computer model of the process of regeneration of the sodium-cation exchange filter in nonequilibrium and non-stationary conditions in the form of a computer software package ("Regeneration-1", "Regeneration-2"), recommended for scientific, design, commissioning and operating organizations, relevant industries. For the first time, the task of optimizing the ion-exchange nonequilibrium regeneration of the sodium-cation exchange filter as a separate stage of the filter cycle was posed and solved. The analytical dependence of optimizing the specific consumption of NaCl salt for nonequilibrium regeneration of the sodium-cation exchange filter as a separate stage of the filter cycle is obtained.

To determine the wave or ice load on offshore hydraulic structures, calculation methods and modern mathematical models are used, as well as field observations and laboratory studies. Each of these methods has advantages and disadvantages. Sharing existing methods provides an approach called "hybrid or composite modeling." Hybrid modeling provides the most reliable approach for designing safe facilities. However, the interaction of the individual components of hybrid modeling requires further research. This article is devoted to the study of the problems that arise when verifying the results of numerical modeling of wind waves using field and laboratory model measurements. The experience of studying the projects of the port-shore protection complex in Imeretinka, Sochi, the LNG terminal in the Ob Bay and the port in the East Bay of the Sea of Japan is used.

The problem of conformity of products to the requirements of technical control or between products of different batches puts the methods of experimental determination of product properties high on the agenda. The measurement of the parameters of these properties is stochastic. Some product properties can only be determined in specially designed experiments. Thus, in the production of powders, their dispersion can be normalized, the specific charge of condenser powders can increase, the location of magnetic granules of nanoparticles on information carriers can be controlled, the content of physiologically active substances in drugs can be controlled, and the spectrum of mobilities of atmospheric particles can be analyzed. Possible approaches to solving the problem of checking a batch of products for compliance with the requirements of technical specifications (TS) are considered using the example of powder dispersion. For the first time, a method has been proposed for comparing product properties, which are continuous random variables, by determining the joint area under their differential curves. The decision on the conformity of the measured product properties to the requirements of technical specifications is based on a comparative assessment with the directive established joint area under the distribution density curves. The technique of determining the probability of correspondence of normal distribution laws to each other is described. A final analytical solution is obtained for two exponential distribution laws.

The article discusses the effects of modifying bismuth ferrite BiFeO₃ with rare-earth elements, REE, (large-sized, group 1, with 0.94 ≤ $\bar {\rm{R}}$ ≤ 1.04 Å – La, Pr, Nd, Sm, Eu, Gd, medium-sized, small-sized Group 2, with $\bar {\rm{R}}$ <0.94 Å – Tb, Dy, Ho, Er, Tu, Yb, Lu). The authors describe the study results of the influence of the crystallophysical parameters of stoichiometrically introduced dopants on the type of phase diagrams of Bi_1-xREE_xFeO₃ systems, the grain structure of ceramics, the dielectric spectra of samples, and the behaviour of their thermophysical characteristics over a wide temperature range. They show the possibility of using new multiferroic materials in artificial intelligence systems.

The phase and grain structures and the dielectric properties of solid solutions (SS) of bismuth ferrite modified with small-sized rare-earth elements (SRE) are studied. The regularities of the appearance of impurities of various compositions depending on the ion radius and SRE concentration in objects are revealed. Based on the analysis of the dielectric spectra of the SSs, the development of Maxwell-Wagner relaxation associated with the accumulation of fSRE charges at the interfaces between the components was established in them. The conclusion is made about the possibility of using the results obtained when creating a new generation of multifunctional materials.

While working on a model of mass impurity transition for the waters of the Sea of Azov and the Kerch Strait, we calculated the capacity of the immediate point source and identified the location of the initial contamination plume. Contamination source capacity identification is based on minimizing the quadratic functional of the forecasting quality and solving associated problems. Associated problem solving is also used in order to identify the location of the initial contamination plume in the body of water under analysis. The first goal was reached for the Gulf of Taganrog area, and the second one – for the Kerch Strait area. It must be noted that both areas have heavy marine traffic and experience the construction of new transport corridors. Simulation results were produced taking into consideration north-western winds that are dominant in the region. Quantitative experiments show that it is possible to identify the capacity of an intermittent point source of contamination using a three-dimensional model of mass impurity migration, as well as to identify the location of the initial contamination plume.

The properties of converter slag, its activity and the influence of the degree of decay on the structural and mechanical properties of asphalt concrete are studied. It has been established that asphalt concrete with a degree of decay of converter slag of 1.24 % or less can be used for paving roads. It has increased heat, water and frost resistance, which will significantly increase the service life of roads from the beginning of operation to overhaul.

The paper presents the results of the development of a single integrated solution for the automation of technological processes of service enterprises of the oil and gas sector, which allows to organize the work of production and management in a single information space. Algorithms have been developed to solve individual problems that are interconnected into certain algorithmic modules. The results of the integration analysis of modern automation systems of the ERP-class are presented, in particular, the level of adaptation to the stages of the product life cycle, compliance with standards and safety requirements, the complexity of the transition to the automation system. The results of the analysis of possible risks of the project during the implementation of this algorithm are presented. The practical significance of the development of a single production management algorithm is described. Finally, the treatise evaluates the main advantages and economic effect of the introduction of an automation system for an enterprise engaged in the production of oil and gas pipes at the process control level.

This article presents the results of laboratory and field studies of territories in the zone of influence of the gold extracting and mining enterprises of the Southern Urals. Researches were conducted on six sites of gold mining of the past years, in order to identify natural and technogenic mercury in various natural and man-made landscapes of mining Bashkortostan. A brief description of the mineralization of the study area and types of gold deposits is given. The mercury content in bedrock, in various types of ores, man-made soils (fine-grained tailings dump, tailings), soils, bed-silts, in the soil air, in water was determined. The largest technogenic anomalies are Hg dissemination flows in bed silts of watercourses and lakes. Technogenic Hg anomalies in soils are local and are formed in the areas of mining and old ores processing. The practical absence of anomalies in transit environments with intensive Hg accumulation in long-term deposition reflects the regressive residual nature of technogenic mercury anomalies.

The research assessed an impact of the underground gold mining (GM) on snow cover, surface and ground water of the industrial site and the adjacent area. It has been established that the water of observation wells located downstream the terrain contains specific pollutants typical for the GM technology. The snow cover contains dust, heavy metals, arsenic and some light organochlorine compounds, which are components of GM solutions. The article also gives recommendations on monitoring and assessment of the environmental impact of the PoE technology.

The study of behavioral patterns and changes in the surface properties of melts as the number of components increases is of great interest. The aim of the work is to reveal theoretically predicted regularities that establish the relationship between the type of isotherms of surface tension and the density of the four-component system of indium tin-lead-bismuth from the type of corresponding side double systems. In particular, indium tin systems.

The article analyzes the conditions of buildings construction in town Shakhty after the closure of coal mining enterprises. The appearance of deformation processes after old mine workings were flooded, is usually accompanied by uneven surface deformations and cracks formation in load-bearing structures is noted in the article. The positive effect of polypropylene microfiber additives on the deformation properties of Portland cement masonry solutions was studied, as it significantly reduces the probability of cracks in building structures. The results of experimental studies of mechanical properties of compositions with optimal dosage of polypropylene microfiber are presented. An increase in flexural and compressive strength of microfiber-modified samples was noted in comparison with the control ones. The dependence of ultimate deformations on normal stresses is established, which allows predicting the permissible ultimate deformations of masonry. The module of the total solution strain was evaluated.

Based on the experimental and X-ray studies of the absorption spectra and the temperature dependence of the crystal lattice parameters of AgInSe2 single crystals and the coefficients of thermal expansion along the corresponding crystallographic directions were calculated. It was found that the thermal expansion of AgInSe2 crystals along the a and c axes changes its sign at a temperature of 142.31 and 135, 14 K, respectively. The anomalous nature of the band gap width AgInSe2 was established.

We have studied the effect of uniaxial compression (stretching) deformation on electrical conductivity along the crystallographic axis [00l] of monocrystals TlInSe₂ and derivant solid solutions. It has been found that substitution of Tl atoms with Ag atoms in crystals of solid solutions based on TlInSe2 leads to a shift of the energy of indirect transitions to the long-wave zone. The obtained results have been compared to both theoretical calculations of the zone structure of TlInSe2 crystals and the multi-valley model.

Metal silicides play a significant role in the preparation of ohmic contacts and Schottky barriers on silicon. The formation of ohmic contacts is carried out by applying a metal film with a thickness of ∼ 100 nm to silicon, followed by annealing at temperatures of 400–600 °C, as a result of which there is a reaction between silicon and metal with the formation of silicide. With this technology, silicon diffusion leads to instability of devices. In this regard, the authors developed an improved technology for the formation of silicides of refractory metals to obtain ohmic contacts. Ion implantation allows, due to ionic mixing, forming nickel silicide on the surface of the samples when heated. It is important that, with an increase in the radiation dose, the formation of Ni2Si silicide slows down. This effect can be explained by the formation of a dielectric Ni3Si2. Similar phenomena were observed during the bombardment by oxygen and nitrogen ions.

An interdisciplinary approach to the simulation of magnetic gravity separation is proposed. The approach is based on revealing the laws of motion of mineral particles taking into account their magnetic properties in a computational experiment and establishing the form of an empirical multidimensional function for calculating the deposition rate of aggregated ferromagnetic particles in a multiphase multi-speed process medium. Based on the results, a comparative assessment of the convergence of the obtained deposition kinetics parameters with respect to the practice of applying the classical Stokes formula is given. The possibility of interpreting the fractional separation characteristics of the magnetic-gravity separator using the error function is shown. A method for integrating the simulation model of magnetic-gravity separation into an analytical prototype of the technological enrichment scheme is considered, for which the basic principles of constructing technological schemes for mineral processing are presented and the principles of constructing their simulation models are formulated.

The article is devoted to the possibility of using renewable energy sources for electricity supply to consumers in remote regions of Russia, isolated from power systems. The use of wind energy resources for power supply will reduce the consumption of diesel fuel and, thus, improve the reliability and efficiency of electricity supply to consumers. At the same time, wind power stations are considered as a complementary energy source when working together with diesel power plants, which are the main ones for power supply to decentralized consumers. The construction of wind farms in addition to existing diesel power plants in modern price conditions is cost-effective in the Arctic regions of Yakutia. The extent of the use of renewable energy sources is currently very small. Justification of the use of wind energy for each locality requires a separate specific study to assess the financial and economic efficiency with a preliminary determination of the optimal capacity of wind farms.

In recent years, in the search for alternatives to toxic anticorrosive chromium pigments, the use of complex metal oxides in this capacity has been actively developed. In this work, the anticorrosive and other physicochemical properties of complex oxides, including manganese in oxidation degrees +4 and +5, obtained by the calcination method were investigated. As a result, it has been shown that the products obtained have good prospects for being used as anti-corrosion pigments. Higher inhibitory properties of pigments containing manganese in oxidation state +5, is probably a consequence of their aqueous extract's alkaline reaction. During the experiments, it was found that the competitiveness of the synthesized pigments can be markedly enhanced by using natural ore, pyrolusite, as manganese source.

The study proposes mathematical model for reducing the size of mineral particles in crushing and grinding operations, which is a form of the reflected normal Gaussian – Laplace distribution. The study considers the distribution density modification of the mineral particles depending on the magnitude of the energy impact during grinding. Comparison of the results of computational experiments with the results of laboratory studies confirms the possibility of using the proposed model of disintegration of mineral particles in the development of software modules for the operational evaluation for crushing and (or) grinding of mineral raw materials.

In the paper the results of a structure and dielectric properties study of ferroelectric-relaxor Sr_0.75Ba_0.25Nb₂O₆ (SBN-75) ceramics and thin films with the structure of an unfilled tetragonal tungsten bronze have been presented. The existence of orientation domains in the SBN-75 film with rotation in the interface plane only by angles of ± 18.4° relative to the axes of the MgO substrate is revealed. In the tetragonal approximation, the unit cell parameters of the film (c = 3.948 Å and a = 12.49 Å) and its strain in comparison with the cell parameters of the ceramic sample have been determined.

The article presents the transfer relevance of the boiler from diesel to natural gas. There is an economic calculation of the efficiency in using a gas-equipped PKN-2 boiler with a GG-1 type burner, as well as the environmental efficiency of modernizing the boiler installation. Place: Novo Energy Services LLC enterprise, the Yamalo-Nenets Autonomous District, the Yurkharovskoye oil and gas condensate field, bush No. 2.

Solid-phase synthesis followed by sintering using conventional ceramic technology produced ceramics based on the binary system of solid solutions (Na, Li) NbO3. The influence of superstoichiometric modification with nickel oxide on the internal structure (crystalline, grain) and macroresponses of the analyzed media is established. Based on the analysis of piezoelectric and ferroelastic properties, the prospects of using materials in various electronic devices are shown.

The paper presents the results of comparative tests of imported and local cements in highly mobile concrete mixtures of various classes and brands. It is proved that on the basis of local cement it is possible to obtain concrete of any grades in terms of workability and grades in compressive strength up to B45. Various factors affecting the stability of the composition and properties of the concrete mixture are considered. Recommendations on their use in high strength concrete are proposed.

Currently, the creation of clinker-free binders that do not require high-temperature processing and a substantial natural resource, and have high technical indicators, is an urgent task. The active component of alkali metals characterizes alkaline cement. A distinctive feature of alkali cement is its ability to interact with aluminosilicate minerals during hydration, which leads to the formation of active and hardly soluble compounds. The basis for the production of concrete composites based on chemical activation binders is the domestic and foreign experience in the use of slag-alkali composites in construction. In this work, an energy-dispersive microanalysis of clinker-free compositions based on alkaline silicate of sodium solutions from silica-containing rocks is carried out. The developed formulations of clinker-free binders based on highly dispersed powders of different nature, sealed with an alkaline solution prepared by the wet method at temperatures up to 95 °C and atmospheric pressure. This technology expands the scope of alkaline cement and produces concrete with desired properties. This work was carried out as part of research on the implementation of scientific project No 05.607.21.0320. "Development of technology for new building composites on clinkers alkaline binders using substandard natural and secondary raw materials," which received support from the federal target program "Research and Development in Priority Directions for the Development of the Russian Science and Technology Complex for 2014–2020."

In this paper, we substantiate approaches to the transition to clinker-free binders and building composites with their use to replace resource-intensive cement, at least in those areas of construction where its high technical functional properties are not needed. The optimal formulations and properties of alkaline activation binders based on mineral powders are revealed and the theoretical foundations of the formation of the structure and strength of cement stone based on an alkaline activator are revealed. The results of the studies are of practical value for the construction industry, as the obtained formulations of clinker-free cements will partially replace expensive and energy-intensive Portland cement in the production of concrete and reinforced concrete structures. This work was carried out as part of research on the implementation of scientific project No. 05.607.21.0320. "The development of technology for new building composites on clinkerless alkaline binders using substandard natural and secondary raw materials" that received support from the Federal target program "Research and development in priority areas for the development of the scientific and technological complex of Russia for 2014–2020".

The paper studies the features of complex formation of comenic acid with Mg²+, Cu²+ and Zn²+ ions. Besides, the paper presents the forms of binding of comenic acid with magnesium, copper (II) and zinc ions as well as the composition of complex compounds formed. Using IR and NMR (¹H, ¹³C) spectroscopy, there was studied the structure of compounds the geometry of which was confirmed by quantum chemical calculations.

Improving the efficiency of precast concrete products and structures can be achieved by creating thin-walled products of effective cross-sections from high-strength concrete the formation of which requires application of centrifugal methods of compaction. The paper discusses literature data on the issue of forming the structure of centrifuged concrete by the thickness of the section wall, taking into account different densities of the components of the molded concrete mass under the action of centrifugal forces during mold rotation during concrete compaction at a constant speed. The authors conducted a series of experimental studies to establish the nature of the change in strength properties along the thickness of cross section of products from heavy concrete made by centrifugation and vibrocentrifugation. As a result of experiments, it was found out that the density of samples of centrifuged structures decreases in cross section from the outer layer to the inner one. The greatest values of ultimate strength under axial compression and tension during bending are characterized by the outer layer, the smallest are characterized by the inner layer. The middle layer in terms of strength indicators is close to the average strength of the whole product. A feature of changes in compressive and tensile strength during bending of vibro-centrifuged products and structures compared to centrifuged layers is a smaller difference between the outer and middle layers and a significant difference between the outer and inner layers. It was established that the variability of the structure of high-strength concrete is less pronounced compared to the lower-grade concrete.

The paper discusses the modeling of the forces of interparticle pair interaction of spheroidal agglomerate in composite cement. Based on the calculation of the autohesion forces that make up the spheroidal agglomerate, i.e. the Portland cement ("carrier particles") and silica fume ("guest particles"), it was found that for uncharged particles the magnitude of the electric interaction forces is negligible in comparison with molecular van der Waals and capillary forces. The bipolar charging of particles in the corona discharge field at a corona electrode potential of +18 and –18 kV sharply increases the electric component of the autohesion force, which in value approaches the value of capillary forces. In this case, the Coulomb attractive forces between oppositely charged particles begin to act before the direct contact of the particles, which contributes to the agglomeration of particles. These calculations are confirmed by the results of scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) of composite cement samples containing Portland cement (75 %) and dry gas purification silica fume (25 %), the number of angular particles of irregular shape decreases for a mixture of these materials processed in the device for surface modification.

The need to create an automated system for selecting rational organizational and technological solutions based on modern design technologies. Methods. Based on known BIM building information modeling objects are created by the Bank (information base) of typical technological cards (TC) from which the method of the study criteria based on modified genetic algorithms (GA) is the most efficient TC for this type of work. Results. The article deals with the choice of the method of production of construction works on the set of technological maps of construction and installation works. Conclusion.

the article presents the principles, methods and means of visualization of organizational and technological solutions developed as a part of technological maps for the production of construction and special operations. In this paper, the authors analyze the possible ways of the development of visualization of organizational and technological solutions. The examples of 3D images of the main production schemes as a part of technological maps for the installation of beams in machine rooms in the building of hydroelectric power plants are shown. The developed display techniques can be used in the practice of the design of technological maps for the production of construction and special operations. This technology will expand the scope of modern design tools in the practice of construction production.

Cementless binders and building materials are promising. The article presents results of production of foam concrete compositions using high-concentration aluminosilicate binder suspension based on granodiorite. Their basic physical and mechanical characteristics and microstructural features are described. The method of multifactor experiment was used, which allows to vary the parameters: water-solid ratio, amount of binder component and stabilizing additive. Thus, during steps of mathematical planning, optimal parameters were recommended, the observance of which is necessary to obtain cementless cellular composites with the best properties.

the article presents the study of the content of organic ecotoxicants – polycyclic aromatic hydrocarbons in the soils of the impact zone of the energy industry enterprise of Novocherkasskaya power plant (NPP) – the largest producer of electricity in southern Russia. The study showed a high level of total PAH content in the soils of the studied territory, compared to the background territories. The degree of contamination of soils in the zone of influence of the energy industry enterprises with Benzo(a)pyrene is classified as highly contaminated soils. The diagnostic relationships of individual PAHs showed a significant effect of the NchGRES on the soils of sites located along the line of the prevailing wind from NPP. For these sites, the pyrogen-coal origin of PAHs was established.

The goal is, based on modern methods of geoinformatics and geomatics, to assess the landscapes of the Crimean Peninsula for tourism using a set of indicators characterizing the expressiveness of the geomorphological basis: the absolute height, steepness of the slopes, the depth of the relief and the density of the dissection of the relief. Organization and research methods: assessment of the landscapes of the Crimean Peninsula by a set of indicators characterizing the expressiveness of the geomorphological basis was carried out using the Quantum GIS (QGIS) software package by creating a series of maps reflecting the geomorphological characteristics of the relief and their subsequent overlay analysis for each of the landscapes of the Crimean Peninsula. To create maps and obtain indicator values, geoinformation, cartographic, and cartometric research methods were used. The data obtained for each landscape were further processed by statistical methods using the statistical calculation environment R and the Statistica 10 program. Results: the values of the absolute height, slope steepness, depth of the dismemberment of the relief and the density of the dissection of the relief were calculated for each landscape of the Crimean Peninsula. In addition, by implementing statistical methods, zoning of landscapes of the Crimean Peninsula was carried out using a set of indicators characterizing the expressiveness of the geomorphological basis.

The inability of vehicles in some cases to deliver lifeguards and equipment to hard-to-reach places has contributed to the development of the idea of using horses in such situations. It would not be difficult for horses to overcome places considered difficult to access, and this work would be done in a much shorter time. In this case, divers would not have to engage in heavy physical labor to carry weights. The developed methods of horse training and rescue training were tested, which confirmed the research of specialists.

Numerical modeling of the displacement of the earth's surface during the construction of deep tunnels is considered on the example of one of the Moscow metro lines. Based on the results of numerical simulation of the driving of one and two tunnels using several calculation schemes, the forecast parameters of the displacement trough, such as subsidence, slopes, curvature, horizontal deformations of the earth's surface, are determined. According to the criteria of deformations of the earth's surface, a tunnel influence zone is constructed. In the influence zone of tunnels, it is necessary to create observation stations for surveying (geodetic) monitoring of subsidence of buildings and the earth's surface, including using automated monitoring systems. According to monitoring data, the parameters of the calculation models are adjusted to increase the reliability of the simulation results. A technique is proposed for a preliminary assessment of the displacement of the earth's surface in the influence zone of the construction of subways tunnels.

The article analyzes the approaches to the construction of predictive models based on the apparatus of artificial neural networks, in particular, the method of back propagation of errors by iterative adjustment of weight coefficients.

Historically the use of natural and ecologically safe refrigerants was a strategy to eliminate environmental problems and avoid uncertainties with synthetic replacement fluids. Since ammonia is toxic, carbon dioxide provide high pressure, and the hydrocarbons are flammable, the general conclusion is often drawn that natural fluids gave safety problems. This paper will describe the possibilities of application as working fluids in refrigeration, heat pumping and organic Rankine cycles of the hydrofluoroolefins (HFOs) as alternative refrigerants with low global warming potential.

The paper presents the results of the study of magnetic and magnetostrictive properties of rare-earth intermetallides based on TbFe₂ compound: Tb_1-xZr_xFe₂, Tb_1–xSm_xFe₂ and (Tb_1–xY_x)₀.₈Sm₀.₂Fe₂. These alloys have a cubic crystal structure of the Laves phase C15 throughout the substitution region. For the system of alloys Tb_1–xZr_xFe₂ the single-phase area is limited to the replacement parameter 0 < x < 0.2 and 0.8 < x < 1.0. The compounds of the Tb_1–xSm_xFe₂ system were studied via X-ray dilatometry. The magnetostriction of alloys within the Tb_1–xZr_xFe₂ and (Tb_1–xY_x)₀.₈Sm₀.₂Fe₂ systems was studied in the temperature range of 80-320 K in magnetic fields of up to 17 kOe via a strain-gauge method. It was found that each system has the phenomenon of sign inversion of magnetostriction constants: in the system Tb_1–xZr_xFe₂ in the area of replacement parameter x = 0.8, in Tb_1–xSm_xFe₂ - in the area x = 0.45, and in the system of alloys (Tb_1–xY_x)₀₈Sm₀₂Fe₂ at x = 0.6. It was demonstrated that magnetic compensation and spin reorientation phenomena occur in these systems. The obtained results are discussed in the model of alloys with competing exchange interactions.

A large number of scientific schools is working over improving existing building materials and designing some new composites for various functional purposes, where the composites properties play a very important role. However, priority is given to the initial properties of building composites but one of the main indicators by which these properties could be evaluated after prolonged use and under the influence of natural and man-made processes is durability. The study on building materials under changing operating conditions, based on unconventional natural and man-made materials is becoming very interesting and relevant for today. The theoretical basis for increasing the durability of building materials may be the theoretical knowledge of technogenic metasomatism in building materials science. It has been established that the use of unconventional natural and technogenic raw materials, in particular unconventional clay rocks for production of hydrothermal hardening silicate materials will help to achieve the necessary structurization level and maximum physic-mechanical properties of highly efficient wall products under various operating conditions.

The stress-strain state of an underground transmission pipeline under the action of earthquake seismic waves is considered. The main objective of this study is the construction of a mathematical model with the analytical solution for lower estimation of the influence of earthquake seismic waves on the transmission pipeline. The spectra of the design seismic actions of the earthquake are determined on the basis of parameters of real seismograms of past earthquakes. The generalized functions of seismic impulses are constructed. The transmission pipeline is modeled by a thin bar. Equations of pipeline motion using the Laplace transformation in time are solved, stresses are determined. The numerical example is considered. The results of calculations on the theories of Kirchhoff and Timoshenko are compared. Graphs of stress changes depending on the earthquake's strength in points are given. The limiting value of the earthquake magnitude resulting in large stresses and deformations is determined. As a result, the transmission pipeline is destroyed.

The methods of thermally stimulated depolarization (TSD) and X-ray diffraction analysis were used to study the impact of electric and temperature fields on the relaxation properties, structure, and molecular mobility of a liquid crystal (LC) copolymer based on polyethylene terephthalate (PET) and n-hydroxybenzoic acid (n – HBA). It was shown that polarization in the LC state besides the main relaxation transition leads to the formation of additional high-temperature maximum on current thermograms of thermally stimulated depolarization (TSD). The data of X-ray diffraction analysis indicate a change in the orientation of mesogenic units after polarization in an electric field. The results were explained by the combined action of electric and temperature fields on the conformational structure of the liquid crystal copolyester, namely, a change in the degree of crystallinity of the studied copolyester under the influence of external fields.

The paper considers the characteristic morphological features of geophysical fields caused by fault tectonics of the Tersko-Caspian trough. The results of the interpretation of the gravitational and magnetic fields of the region using the Cascade 3D spectral-correlation analysis of data are presented. Computer technology made it possible to analyze three-dimensional digital geophysical information using the methods of a probabilistic-statistical approach. Linear positive anomalies of geophysical fields are identified that extend in the fault zones. A comparative analysis of the maps of transformants of the gravitational and magnetic fields and maps of oil and gas structures. Based on the results of comparative analysis, a dependence was established that characterizes the confinement of the known oil and gas deposits in the region to the zones of positive linear anomalies of geophysical fields of a sub-latitudinal strike.

This paper presents the results of the surface properties of the tin-based melts. It has been shown that the best wetting of Al-4 at. % Li grade aluminum, silicon, and piezoceramics are achieved by the eutectics and terectics of tin-aluminum, tin-zinc, and aluminum alloys, respectively. Preliminary photon annealing of the substrates for 3–4 sec improves the wetting of silicon and ceramics. Solder wetting is also improved by the addition of copper and nickel micro powders, alkaline, and alkaline earth elements.

The article is devoted to the development of methods and evaluation of the accuracy of determining the horizontal stiffness of multi-storey buildings basing on the results of instrumental measurements of the self-induced vibrations parameters carried out with the help of high-precision instruments. The proposed studies are extremely relevant in estimating the unsoundness degree of the buildings that have passed a certain period of operation or buildings that have been subjected to severe exposure. The use of dynamic methods of load-bearing structure condition analysis has undeniable advantages, since it excludes the need for a detailed examination, often associated with the necessity to open the enclosing structures and evict the residents of the building. The advantages of using this approach are particularly evident in the survey of a large array of residential buildings that are in heterogeneous operating conditions and require rapid results. The practical application of the methods was tested in the survey of the high-rise apartment buildings of 1-335 series in the city of Irkutsk. However, the need to use dynamic models of small dimension in the evaluation of stiffness parameters makes it inevitable and urgent to solve the problems of assessing the accuracy of such approximations.

In this work the shortage level of oil and gas is considered. Receiving various products from coal, exceeding prime cost of mineral raw materials in tens of times. The prospect of creation of the plant of receiving synthetic fuel from coal in territories of Eastern Siberia.

The literature on the deterioration of reservoir properties of the bottomhole zone during various operations in the wells and when acting on the reservoir is reviewed. It was revealed that bullhead well control operations and impacts on the bottom-hole formation zone have a very large negative impact if the current geological and physical conditions of the object are not taken into account. Laboratory and field tests of several hydrocarbon-based emulsion formulations were performed. Experiments and tests have shown the effectiveness of the proposed formulations and allow recommend them for use in well repair.

The article is devoted to multilateral drilling, it provides a brief history, relevance of application, development prospects, advantages. The history of the emergence and development of the unified international classification of multilateral wells the TAML is also described in detail. The article summarizes the characteristics of the six difficulty levels of the TAML Classification System. The use of advanced RAPID brand joints is described and analyzed in detail. Various designs of joints of the Rapid brand are considered. The authors also propose the construction of a multilateral well using a connector of the Rapid X type.

In recent years, the amount of minerals recovered from the earth interior exceeds their production over the entire past human history. The reserves of some rare elements have been significantly reduced and the demand for them has increased dramatically through the use of new techniques and technologies. The task of developing new types of mineral raw materials from formation waters has become ever more relevant. In the process of formation water preparation during the production of table salt the fluids and heavy brines are obtained, which are suitable for their further use in oil production. The fluid obtained through deferrization of formation water has reduced content of magnesium ions. The use of this fluid makes it possible to increase the mechanical strength of the cement stone, the tightness of the "column-cement stone" contact zone, and to reduce magnesia corrosion.

It is shown that the priority condition for reliable forecasting of the cyclic impact on productive formations of high-viscosity oil is the joint research and study of rheological and filtration properties of high-viscosity oils, including thixotropic properties, as well as mathematical calculations to choose the right mode of the working fluid injection. For the Stepnoozerskoe field conditions, the optimal injection period is 10 days.

The geological and technological parameters, which have a prevailing influence on the success of the treatment, were established on the basis of analysis and synthesis of experience of hydrochloric acid treatments in the conditions of Tournaisian oil deposits of the Volga-Ural oil and gas-bearing province. The algorithms, which allow selecting wells for hydrochloric acid treatment, determining the parameters of treatment taking into account peculiarities of geological structure of formations, time factor, peculiarities of technology of wells and deposits operation, were proposed. The conditions for the most successful implementation of this type of treatment on the bottomhole zone to intensify oil production and reduce the water cut in order to increase the level of profitability of deposits in carbonate reservoirs with hard-to-recover reserves were established.

Under the conditions of terrigenous Jurassic deposits in Western Siberia, we conducted a study on the influence of depositsʼ geological structure features, reflected by the results of geophysical surveys of wells on the effectiveness of the impact on the bottomhole zone using the hydrochloric acid composition Aldinol-20. It was established that in predicting the effectiveness of the impact on the bottomhole well zone, it is necessary to use the data of geophysical studies. At the stage of putting the field into development, it is enough to limit this information in the absence of it. The article proposes a technique that allows us to solve the tasks at different stages of development. The technique is based on the use of geological and statistical models and it is built based on using various performance criteria for various amounts of information. It is to be conducted in the conditions of a limited amount of information about deposits due to insufficient volumes of field research of organizational and financial nature, as well as in case of changing the tactics and strategies of enterprises in market conditions.

It was found that when treating the bottomhole zone with acid compositions preventing emulsification in terrigenous reservoirs, the time factor has a significant influence on the treatment efficiency, much more than the features of the geological structure of an objects. The algorithm, which allows reducing the negative influence of the time factor on the efficiency of oil production intensification by application of technological impact indices, is proposed. Geological-statistical models were obtained, which allow planning the treatment efficiency, selecting wells and technological treatment indicators taking into account the time factor in real time.

The paper presents the detailed analysis of structural and tectonic structure of the foundation surface and Jurassic deposits of Western Siberia, which allows identifying complex, small-sized geological objects promising for the detection of small oil deposits, clarifying the location of exploration wells, searching for deposits in subvertical destruction zones in deposits of the middle and lower Jurassic, foundation rocks in territories with already discovered overlying oil deposits. The zones of excessive fissuring, connected, among other things, with the zones of horizontal shear, which made it possible to change the expected contours of existing deposits and to reveal perspective excessive fissuring zones.

Assessment of professional risks in the performance of basic technological operations in drilling oil and gas wells is today an important scientific and practical task in the field of labor protection. The article discusses the main negative production factors that lead to damage to the health of workers during the operation of the mud pump. To exclude injuries, employees should have information about the main occupational risks in carrying out technological operations and have the competence in labor protection and production safety. The conclusion is drawn on the need for further scientific research in the field of analysis and assessment of professional risks in the drilling of oil and gas wells.

The paper considers the issues of assessing the influence of various factors on the production of oil reserves of Jurassic deposits of Shaimsky oil and gas region. The study states the influence of the network of disjunctive tectonics dividing the deposit onto the network of blocks on the degree of oil recovery. Trace research was conducted. Dependencies showing that hydrodynamic connectivity between wells takes place along fault lines or close to them, which is caused by the formation of decompression zones with increased permeability, are obtained. It was found that in the central blocks of the deposit there are large effective oil-saturated thicknesses with higher reservoir properties, which does not allow faults with low displacement amplitude to disrupt the connectivity.

The article discusses the process of optimizing the operation of the NBT-600 mud pump by adjusting the frequency of the current supplied to the pump drive. As a result of a technical measure, efficient operation of the pump is ensured, the energy consumption of the pump unit is reduced, and the main parameters of the pump are increased.

The article discusses the equipment of a system for collecting and preparing well products. The equipment is made in the form of a slug catcher separator, the design of which is the product inlet capacity. Its main element is a cyclone-type scrubber with a swirl, in which the product is separated into gas, liquid and impurities. As a result of design optimization, the entrainment coefficient and the degree of product purification are improved.

The article analyzes the complicated stock of producing wells equipped with electro-centrifugal pump installations in an oil field. The study identified factors causing complications in oil production. In the course of the study, a complicated well stock was examined, and possible ways to prevent the formation of complications during the operation of oil producing wells were studied. The article presents well performance indicators that reflect the factors that complicate the operation of electric centrifugal pump installations. It developed recommendations to improve the condition of the complicated deposit fund.

The article proposes a near-bit device for vibrodynamic grinding of sludge in a horizontal section of a well – a near-bit sludge shredder, its advantages are given. Theoretical studies of the dynamics of the near-bit sludge grinder oscillatory system depending on the main geometric design parameters are presented. Based on the solution of the mathematical model of the operation of the oscillatory system of the slurry grinder, the law of the relative rotation of the drum-mesh and its angular velocity of rotation relative to the shaft of the turbodrill (bottom of the drilling tool) is established. According to the results of solving the equation of motion of the working elements near-bit slurry grinder, the dependence of the amplitude of the angular velocity of the relative vibrational rotation of the drum on the stiffness of the springs and on the moment of inertia of the drum is established.

The design of upper bit tools has been developed. Such tools provide crushing, sifting and removal of slurry from the bottom when drilling vertical, deviated and horizontal wells with a roller cone bit. The analysis of slurry samples from directional and horizontal wells was carried out to determine rational geometric dimensions of the working channels of the upper bit tool. The design requirements of upper bit tool, ensuring the stability of its operation, are presented.

Experimental and field studies have identified the rational geometric dimensions of elements of upper bit sludge grinder, ensuring its operation's stability. Laboratory studies of upper bit device model showed that the amplitude of drum oscillations depends on the shaft rotation frequency, spring stiffness, and drum inertia moment. To determine the dimensions of working channels and drum openings of a upper bit device, the analysis of slurry samples from directional and horizontal wells was carried out. Designs of a slurry grinder for drilling wells with cone bits with diameters of 146 and 215.9 mm have been developed. Field tests showed that the use of the developed design of near-bit sludge grinder allows to increase the mechanical speed by 18% compared to the conventional method of drilling.

The article considers the approximation of capillary pressure curves of productive formations in Western Siberia. The relationship between the correlating functions of capillary pressure curves is shown: the Leverett J-function and the Brooks-Corey function. In this case, the Brooks-Corey function is the same Leverett function but used for water saturation of the effective part of the void space (reduced water saturation). The authors recommend choosing a correlation function for a given reservoir, depending on the tightness of the correlation between capillary pressure and volumetric or reduced water saturation. In this case, the Leverett function should be preferred, since it depends only on two parameters (permeability and porosity).