bluuebunny/crossref_metadata_2025_split huggingface dataset:
Calculation and Forecast of Resource Extraction during Exploration
Authors: Mukhametshin V Sh 
Published: May 2022

Abstract
Vast experience accumulated in the development of various groups of deposits in the carbonate reservoirs of the Volga-Ural oil and gas province, gave a set of geological and statistical relationships enabling to calculate and forecast resource extraction, provided that a representative volume of geological and field data is not available at the stage of geological exploration. The findings show that developing deposits in carbonate reservoirs requires a differentiated approach due to some specific features of oil recovery in these deposits.
The dependence of the efficiency of hydraulic fracturing on the geological factors of the Tourne-Famene deposit at the Gagarinsky oilfield
Authors: Galkin V I , Chalova P O 
Published: May 2022

Abstract
In this article, a factor analysis of well flow rate increase after hydraulic fracturing depending on facies conditions is carried out using the example of the Turne-Famenskoye reservoir of the Gagarinskoye field as an example. By constructing the equations of multiple regression, the influence of geological factors on the productivity coefficient and, consequently, on the additional oil production was determined. Based on the results of factor analysis and construction of statistical models, high significance of bottom hole and formation pressure values and their change depending on facial environment has been established. It is recommended to select candidate wells for hydraulic fracturing operations taking into account their facial affiliation, specific features of wells where hydraulic fracturing operations were carried out quite effectively, taking into account residual reserves density, water cut of well production, proximity to oil-bearing contour and to injection wells.
The mathematical layer structure of the digital twin of hazardous production facilities at a gas transmission enterprise
Authors: Kirilov A E , Chernyi K A 
Published: May 2022

Abstract
The article presents the structure of the mathematical layer for digital twins (DT) of hazardous production facilities (HPF) operated by gas transportation enterprises. Mathematical models of technical device destructions, models to control parameters of technological processes are presented, the types of affecting factors which can influence the personnel of HPF are described, as well as a safety assessment model for the evacuation of personnel in the event of an accident or a fire. The presented structure of DT and models make it possible to adequately describe the features of HPF and optimise operational safety. The areas of application of digital twins in the production activities of a gas pipeline enterprise have been determined. To determine the most possible scenarios of accidents at HPF the presented models have been tested and implemented in the operational activities of JSC “Gazprom transgaz Tchaikovsky”.
Evaluation of hydrocarbon resources of the Devonian terrigenous rock basin of Perm Region
Authors: Kozlova I A , Borisova D D 
Published: May 2022

Abstract
The geological structure of the Devonian terrigenous complex within the Bashkirian arch located in the well-explored southern part of Perm Krai has been considered in the paper. Due to the limited extent and complex structure of the bulk of reservoir rock in the prospective horizons, these deposits are explored unevenly, usually alongside with the overlying oil and gas bearing complexes. On the basis of the performed analysis of systematic data, the authors justify quantitative parameters for evaluation of non-localized resources after the method of comparative geological analogies in the Devonian terrigenous deposits. The estimated quantity of hydrocarbon resources in the territory under study unequivocally defines it as prospective for exploration and discovery of reserves in the Devonian oil and gas bearing complex. Therefore, the authors have identified areas for priority prospect evaluation survey taking into account the extent of the most promising facies zones of deltaic channels and beach bars.
Impact of hydraulic fracturing on development indicators at BS10, BS11, US11 zones of Yuzhno-Yagunskoye field
Authors: Gabdrakhmanov N Kh , Almukhametova E M , Karimova A A , Stepanova R R 
Published: May 2022

Abstract
The study considers three production zones of Yuzhno-Yagunskoye field. The study analyzes one method of oil intensification from the formation, namely Hydraulic Fracture Treatment (HFT), and provides the results of its influence on development indicators within three zones of Yuzhno-Yagunskoye field. A series of hydraulic fracturing operations was carried out in the period from 1995 to 2017. The methods for analyzing the bottomhole zone of the formation were used to process field data. However, it should be noted that in comparison with previous periods of hydraulic fracturing technology, the effect is reduced, which implies further modification of the used hydraulic fracturing technology. The purpose of this study is to evaluate the process efficiency of hydraulic fracturing at Yuzhno-Yagunskoye field. The above results were used during hydraulic fracturing at Yuzhno-Yagunskoye field.
Use of geotechnical monitoring data in the design of the Serginsky field development
Authors: Shakurova Alsu F , Shakurova Aygul F 
Published: May 2022

Abstract
The paper deals with the use of geotechnical monitoring data to substantiate commissioning of production facilities in the Serginsky field. At the first stage, the geological and physical features of the reservoirs of the Serginsky field were considered; at the second stage, the results of substantiation were adjusted with regard to technological and economic factors. In addition, the experience of deposit exploitation gained during the period of pilot industrial development of the field was considered to substantiate commissioning of production facilities. The main part of the oil reserves of the Serginsky field (85%) is accumulated in two reservoirs J2-3 and J10. Geological oil reserves of J1 and J4 reservoirs account for about 15.2% of the total oil reserves of the field.
The structure of the oil-bearing strata and possibility of extracting oil from them
Authors: Akhmetianova L B , Bagmanov R N , Raymanov M M , Kobishcha D I , Sagitova Z N 
Published: May 2022

Abstract
It is important to study the structure of oil-bearing strata is. In many ways, the structure of the Earth’s layers affects the possibility of intensifying oil production. This is one of the urgent problems of the oil industry. Obviously, at various stages of oil field development, methods of intensifying oil production, depending on the structure of oil-bearing rocks and geological and physical characteristics have their own features, which are manifested when they are used in the field conditions. Determination of the oil recovery factor (ORF) causes great difficulty in the operational assessment of oil reserves. At the stage of initial assessment, this indicator is taken either by analogy, or approximately. In order to make this parameter more valid, the main factors influencing its formation were studied. The formula for calculating oil recovery factor takes into account three main coefficients: grids, displacement and waterflooding.
Development of an experimental set-up for studying the effect of elastic oscillations on fluid flow through rocks
Authors: Riabokon E P , Kazantsev A L , Gladkikh E A , Turbakov M S 
Published: May 2022

Abstract
The article presents the results of experimental studies of the influence of elastic oscillations on the structure of paraffin oil of a Perm region field. Oil samples are treated by elastic oscillations at a frequency of 22 kHz. As a result of cavitation and an increase in oil temperature, a decrease in the concentration and a decrease in the size of high-molecular paraffin compounds in oil is observed. With an increase in the time of ultrasonic treatment, the intensity of dissolution of paraffins in oil increases. A model of an experimental setup is proposed to study the effect of elastic oscillations on the permeability of a rock during the flow of paraffin oil. The impact of permeability deterioration around the production well on its flow rate is assessed.
Ways to improve the development efficiency in the complex-structured carbonate deposits of the Tournaisian stage using hydraulic fracturing
Authors: Grishchenko V A , Mukhametshin V V , Kuleshova L S 
Published: May 2022

Abstract
Depletion of the main oil reserves within the Volga-Ural oil and gas province causes a constant shift in production volumes towards complex low-productive carbonate deposits. Clarification of the geological structure, which has a prevailing effect on the final result, is carried out in order to ensure an efficient process of developing reserves. The analysis of the influence of clay dam thickness between oil and water-saturated formations was done for various injection sites on the efficiency of hydraulic fracturing and treatment of the bottom-hole zone in production wells. The study showed that the critical value of the dam thickness is equal to three meters; the waterflooding efficiency is significantly reduced below this value.
Substantiation of geological exploration and modeling of oil deposits for multistage fracturing in a horizontal well
Authors: Voronova E V , Petrova L V , Gutorov A Yu 
Published: May 2022

AbstractTo date, an increase in the oil recovery factor by commissioning horizontal wells is of relevance for oil fields at the late exploitation stage. In most cases, horizontal wells are developed using multistage fracturing; therefore, it is crucial to determine the criteria affecting its successful implementation. The study results are of use for a more reasonable approach to the choice of the location of horizontal wellbores and increase in the efficiency of geological exploration and multistage hydraulic fracturing.
Location of deposits of non-metallic ores in Russia and the technogenic impact of mining on the environment
Authors: Kozhiev Kh Kh , Gabaraev O Z , Khaliev M S-U 
Published: May 2022

AbstractThe article substantiates the need to strengthen the mineral resource base for the production of non-ferrous metals through the involvement in the operation of substandard raw materials, primarily those stored in tailings dumps for the enrichment of metal ores. The results of the analysis of reserves of ore deposits are presented in comparison with the situation in the world. Quantitative data on the state of the mineral resource base of non-ferrous metal ores in Russia and the provision of industry with metal raw materials are given. The role of mineral resources in protecting the geopolitical interests of Russia is shown. It is noted that Russia lags behind technologically developed countries in a number of indicators of production and consumption of mineral resources. It is concluded that the development of technogenic deposits using innovative technologies is a real step towards strengthening the mineral resource base of Russia, therefore, research on the direction of mining mentioned in the article is relevant.
Influence of formation drilling conditions on the choice of well stimulation method
Authors: Gabzalilova A Kh , Garifullina Z A 
Published: May 2022

Abstract
The paper considers the influence of crank radius change on pumping unit kinematics during the dynamic fluid level control between tubing and casing in order to reduce the string fault rate. To improve the quality of prediction of these factors, the calculation of the movement of the polished rod over time is carried out using the Fourier variable separation method: the product of the balance bar head of a pumping unit defined as the movement of the slider of the pumping mechanism (in a straight line – like the chords of a circle), and the difference of such a chord with the length of the circle section equivalent to the movement of the articulated joint of the balance bar with the connecting rod. As a result, the accuracy of calculations is improved and the solution of the problem is simplified.
Environmental and natural leaching processes in underground ore mining
Authors: Galachieva S V , Stas G V , Izotova I I 
Published: May 2022

Abstract
The minimization of the negative impact of the products of natural leaching of metal ores on the ecosystems of the environment is justified. It is shown that the reason for the formation of ore leaching solutions is the use of development technologies without filling voids. The results of observations are systematized and the concept of environmental management by combining the potentials of enterprises in the region is substantiated. The efficiency of using dolomite waste to reduce the leaching front by filling technological voids with dolomite-based mixtures is shown. The results of the study of the intensity and danger of natural leaching, taking into account the zoning of mineralization within the orefield, are presented. Measures to reduce the level of natural leaching are recommended. A leaching model is proposed that describes physicochemical processes as stages of reactions occurring in the ore mass. The algorithm of substantiation of environmental technologies is given. The ecological and economic criterion of the effectiveness of the implementation of environmental measures is proposed. The processes of natural leaching of metals are adequate, which makes it possible to control their development. Natural leaching is a consequence of the insufficient level of applied development technologies and can be minimized.
Ecology and utilization of ore dressing tailings
Authors: Gabaraev O Z , Konovalova T G , Turluev R R 
Published: May 2022

Abstract
Based on the study of ways to increase the efficiency of metal production through the use of technologies for leaching substandard ores in terms of metal content, a data bank was formed and an algorithm for controlling the processes of leaching substandard non-ferrous ores in terms of metal content was proposed. The concept of the development of technogenic deposits by leaching metals is proposed as an important direction of rational use of subsurface resources. The development of an algorithm for controlling the process of leaching non-ferrous metals from substandard raw materials is a tool for compensating losses of valuable and scarce raw materials allowed in the technological chain. Aspects of the mechanochemical technology of extracting metals to obtain an ecological and economic effect and radical hardening of the mineral and raw material base of mining have been studied.
Analysis of the technology for increasing the recovery and intensification of hydrocarbon production
Authors: Bosikov I I , Egorova E V , Rapatskaya L A 
Published: May 2022

Abstract
The analysis and improvement of the method of additional stimulation of horizontal wells – carrying out multi-zone hydraulic fracturing, which allows to significantly increase the productivity of the well, increase the drainage area, which is especially important in formations with low permeability. In this paper, the oil recovery methods used at the Yuzhnoye field, the method of modeling hydraulic fracturing were considered, and hydraulic fracturing of a highly permeable formation was simulated for two wells 1 and 3 (double-wellbore) in this field. The optimization of the hydraulic fracture design is aimed at creating a fracture of maximum conductivity and minimum length. Since neocom is a highly permeable formation, the TSO (tipscreenout) technology is proposed for hydraulic fracturing – this is end screening. This TSO technology is successfully applied at the Prudhoe Bay field (USA), in the Gulf of Mexico, Indonesia, the North Sea, Canada, Brazil, Venezuela, Vietnam, Saudi Arabia. In Russia, an example of successful design and execution is the hydraulic fracturing operation with TSO in well 4370 of the Muravlenkovskoye field, Noyabrskneftegaz company. The hydraulic fracturing method will increase the vertical permeability and unite the disparate parts of the reservoir, which will make it possible to more efficiently develop the reserves of the Neocomian deposits in the field, system for electricity consumption for the purpose of short-term forecasting of electricity consumption.
The combining different-scale studies in a reservoir simulation model of a deposit with a fractured-cavernous type of carbonate reservoir
Authors: Beltiukov D A , Kochnev A A , Galkin S V 
Published: May 2022

Abstract
When constructing reservoir simulation models of complex reservoirs, it is necessary to take into account the zonal heterogeneity of the filtration and reservoir properties and the influence of secondary processes on the filtration characteristics of the deposit. The underestimation of complex mining and geological conditions negatively affects the forecast for technological and economic indicators of the field development. The paper presents an approach to creating a reservoir simulation model of a complex reservoir based on the integration of different-scale research that allow us to judge the alternation of different types of reservoirs along the lateral and vertical lines. As a result, a refined reservoir permeability cube is constructed which allows us to take into account the influence of the fracturing and cavernous reservoir on the technological indicators of development.
Prospects for waste-free utilization of ore dressing tailings
Authors: Golik V I , Turluev R R , Alpeisov A T 
Published: May 2022

Abstract
The information about the state of the use of natural resources in Russia is given and the need to search for new sources of raw materials for industry is justified. There is a tendency to reduce the production capacity and the rate of extraction of metal ores, which does not allow the use of the infrastructure of mining enterprises and creates the problem of processing substandard ore deposits and disposal of accumulated waste. The concept of deep processing of substandard metal-containing raw materials and a strategy for the survival of mining enterprises, including the use of metal leaching technologies, is formulated. The advantages of technologies with the leaching of metals from mineral raw materials at the stages of its processing are characterized. The advantages of leaching in disintegrators are shown by comparison with the indicators of the basic variant. It is noted that mechanochemical activation improves the quality of concretes made on the basis of recycled tailings. Managing the properties of recyclable materials allows you to implement the principles of resource conservation with an economic effect. It is concluded that the recommended technology is the real direction of technological modification of production.
Improving the efficiency of exploration and development of oil and gas fields in the conditions of frequently interbedding rocks
Authors: Minnivaleev T N , Nosirov D Sh , Kuleshova L S , Minnivaleev A N , Gizzatullina A A 
Published: May 2022

Abstract
Exploration and development of mineral deposits largely affects the dynamics of development of the oil and gas industry in the country. An important stage in the field development is the design of technologies for constructing wells, and the drilling process itself. The appropriate modes and drilling tools create conditions for the maximum oil recovery. In this paper, based on the analysis of existing well drilling technologies and features of the mining and geological conditions of the fields, the use of a new technological solution is substantiated and recommendations are given for its implementation in the Yuzhno-Priobskoye field. The feature of the Yuzhno-Priobskoye field is frequent interbedding, that is, alternation of some rock layers by others. These layers exhibit different mechanical properties, such as hardness, elasticity, and abrasiveness, which arise certain difficulties in the field exploration and development. The proposed technological solution significantly increases the efficiency of mining and geological operations.
Description and prospects of oil and gas potential of the Middle Devonian – Lower Frasnian complex of the south-east of the Timan-Pechora province
Authors: Kuznetsova E A 
Published: May 2022

Abstract
The article is devoted to the assessment of the petroleum potential of the deep Middle Devonian – Lower Frasnian oil and gas complex in the south-east of the Timan-Pechora oil and gas province. Within the Verkhnepechorskaya depression of the Pre-Ural foredeep and in the south of the Pechora-Kolvinsky aulakogen, several wells were drilled with a depth of more than 5 km, some of which opened deposits of the Lower Paleozoic. These strata are difficult to access and poorly studied, and the prospects for their oil and gas potential are unclear. The article describes the composition of the complex, gives geochemical characteristics, describes reservoir properties, and presents the results of 1 and 2D basin modeling. Models of the zoning of catagenesis are presented. The oil and gas complex includes a variety of oil and gas source rocks. It is possible to allocate collectors, as well as seals. In the Middle Devonian – Lower Frasnian sediments, the processes of oil, gas and gas condensate generation took place, which could ensure the formation of deposits both in the deep strata of the Middle Paleozoic, and in the overlying horizons. The generation and accumulation of hydrocarbons in deep-buried sediments occurred at a favorable time for the formation of deposits.
Comprehensive approach to carbonate rocks typing based on core laboratory experiments data
Authors: Raznitsyn A V , Putilov I S , Melkishev O A 
Published: May 2022

Abstract
The paper presents results of the comprehensive approach to identification of complicated carbonate rocks types. The subject of research is the Mishrif formation core from one of the Mesopotamian oil-and-gas province field wells. At the first stage the 3 lithological petrophysical rocks types were identified based on core nuclear magnetic resonance experiments taking into account structural features, which are determined with description data of thin sections. At the second stage the 5 petrophysical rocks types were identified based on routine and special core analyses taking into account secondary changes influence, which is determined by thin sections description data. The identified petrophysical rocks types were described in detail, linear discriminant functions were deduced. These functions allow predicting the identified petrophysical types with the suggested parameters. Comparison of the lithological petrophysical and petrophysical types has shown that the pore space structure of the studied deposits depended on two factors: the first is structural features and the second is postdepositional alterations.
Investigation and analysis of cement slurries
Authors: Shemelina O N , Ovchinnikov V P , Shemelin S S , Dolgova U V , Pavelyeva Yu N , Minchenko Yu S 
Published: May 2022

Abstract
Laboratory studies of grouting slurries and cement compositions corresponding to specific mining and geological conditions are an important link in the design and construction of wells. In this work, a study of the rheological and physical-mechanical properties of cement grouting mixture and grouting cements was carried out. In the research for laboratory tests, samples of ground-bed mortars “GranTSEM - 7 BG” and “CemFrost”, “CemFrost Lite - 5” were used. For the qualitative process of cementing, the analysis of grouting slurries was carried out with the study of changes in the consistencies of grouting slurries over time. Thus, the acceleration of the process of drilling observation and production wells depends on the correct selected cement slurry. As a result, of the studies carried out, it was revealed that the introduction of additives into the cement slurry that bind the barrier water and the drilling fluid helps to reduce fluid loss and increases the specific surface area, which speeds up the drilling process.