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The research relevance of the structure of deep oil and gas horizons' hydrogeochemical fields in Western Siberia is associated with applied and fundamental issues of oil and gas hydrogeology. The article presents the hydrogeochemical field analysis results of the LowerMiddle Jurassic hydrogeological complex, the Em-Egovsky oil field, which is part of the Krasnoleninsk fields group. The research aim was to establish the reasons for the contrast formation in the hydrogeochemical deposit field. We analyzed ion-salt composition of waters over the area (mainly groundwaters belong to the hydrocarbonate-sodium type according to V. A. Sulin) and revealed a fairly large scatter of salinity values (from 4.5 to 16.1 g/dm3 , with an average value of 8.6 g/dm3 ). Study of the genetic sodium-chloride behavior (values vary from 0.9 to 1.4 with an average of 1.1) and chlorine-bromine coefficients (values vary from 105 to 254.6 with an average of 177.2) in groundwater in combination with the analysis of paleogeographic and tectonic allowed classifying waters as sedimentogenic, undergone significant metamorphization. The conditions for the waters formation made it possible to classify the waters as sedimentogenic, after significant metamorphization. The study of the deposit temperature field gave grounds to assume that one of the reasons for the hydrogeochemical field contrast is the inflow of deep fluids from the basement along faults. In addition, the structure of the hydrogeochemical field was significantly influenced by its formation in the environment of a lithostatic water pumping system and by the feeding province - the Ural framing.

The purpose of this study is to obtain a mathematical model to assess the influence of the facies and genetic characteristics of bottom sediments on the distribution of suspended matter during dredging.The addressed problem is associated with the detrimental effect of bottom sediments during hydraulic works on the ecological state of a water body. An increase in the level of technogenic turbidity leads to redistribution of the thermal conductivity of water masses and corresponding deterioration in the habitat of aquatic organisms. The development of a mathematical model for the distribution of suspended matter is an urgent task, the solution of which will allow us to analyze the area of distribution of each of the facies of bottom sediment during dredging operations.A mathematical model of the distribution of facies of suspended matter during dredging operations based on the finite difference method has been developed. Software for modeling and visual representation of the process of propagation of facies of suspended matter in the water space of the Gorin River during dredging operations has been developed using C# software, Visual Studio software development environment.The scientific novelty of the performed work is a qualitative and quantitative assessment of the distribution of suspended solids during dredging operations under conditions of hydrogeological uncertainty.

The article is devoted to the hydrogeochemical conditions of the Mesozoic hydrogeological basin within the Russkoye oil and gas field. The text gives valuable information on the natural conditions, geological structure, geotemperature regime of the bowels of the Earth and the composition of groundwater of the Aptian-Albian-Cenomanian, Neocomian, and Jurassic hydrogeological complexes. The change in the composition of groundwater in the section of the AptianAlbian-Cenomanian complex has been revealed. Vertical inversion zoning that traces the underlying the Neocomian complex is established. We describe the main features of the regional distribution of reservoir pressures. Hydrodynamic schemes of the Aptian-Albian-Cenomanian, Neocomian, and Jurassic hydrogeological complexes are given in the article. These schemes show that the Russkoye gas and oil field is located in the zone of low reservoir pressures. The above vertical inversion zoning and low reservoir pressures are associated with the location of the field within the elisional hydrodynamic water pressure system of the Yamal-Gydan lineaments. The data of the block-fault model of the considered field were used in the course of the study. The block-fault structure predetermined the migration of hydrocarbons and the formation of tectonically screened deposits.

The object of our research is hydrogeochemical conditions of the Mesozoic hydrogeological basin within Yamalo-Nenets oil and gas bearing region. The Mesozoic basin includes the Aptian-Albian-Cenomanian, Neocomian and Jurassic hydrogeological complexes. These complexes contain thermal and mineralized water. The water exchange in the basin in question is significantly hampered; this is reflected in hydrogeochemical conditions. The article presents the distribution maps of water types in three complexes of the Mesozoic basin, maps of changes in the magnitude of mineralization and the content of the most valuable microcomponents (iodine and bromine). It has been established that with the depth (from the Aptian-Albian-Cenomanian to the Jurassic complex) the area of distribution of sodium bicarbonate-type water increases. Further directions of groundwater research in the region are noted.

Not only climatic conditions exert a negative impact on human health, but also the environment, on which the industrial enterprises, excessive use of mineral fertilizers, motor transport impose the negative impact. Intensive rates of degradation of the environment create real threat to human existence. This problem in areas of the Far North is especially strongly expressed.

The job of oil and gas companies of ensuring safe operation of hazardous facilities in general is carried out in accordance with applicable laws, rules and regulations. Sometimes major violations occur, therefore, for the purpose of improving the quality of the organization of production supervision this article proposes relevant activities.

The article deals with an analysis of non-motor methods for measuring the octane number of gasoline. The authors report a device for measuring the octane number and the results of controlling the composition of the effluents of production.

Analyzed the reasons for occurrences of impulse surge in the power supply systems of communication facilities. To select the optimum system of protection recommended the use of the software.

In the article some issues of application of pilotless flying vehicles in oil and gas industry are reviewed. It is shown that such vehicles flight can be optimized by using the pulse technique and radiolocation.

This article contains the material on some features of a grounding device and on calculation of lightning protection resource.