bluuebunny/crossref_metadata_2025_split huggingface dataset:
Forecasting Formation Losses of Hydrocarbons in the Process of Development of Oil and Gas Condensate Deposits
Authors: Katanova R K , Tomskiy K O , Inyakina E I , Ivanova M S 
Published: February 2022

Abstract
One of the important tasks in forecasting and monitoring the development of oil and gas condensate fields is taking into account the current losses of condensate in the reservoir. In this case, it is necessary to use several versions of models that differ in the formation of parameters and thermodynamic properties of hydrocarbon phases. Models are considered in which either the liquid phase dissolves in the gas phase, or it is assumed that heavy fractions are absent in the gas phase. Models of this type are used more often when predicting the development of deposits in the natural depletion mode. Experimental and computational models of equilibrium phase transitions make it possible to improve the prediction of condensate losses in the reservoir. The complexity and laboriousness of the PVT experiment, along with the introduction of new technologies, create a lack of information on the thermodynamic properties of hydrocarbon systems. In order to take into account reservoir losses of hydrocarbons for the development conditions of the Vostochno-Urengoyskoye field, the forecast of the balance of condensate production for the current and final periods of operation was carried out. The model considered in the work allows for adjusting the forecast indicators of condensate production at the current moment of reservoir operation [1,2,3].
Innovative Solutions for Roadbed Reinforcement on 303-331 km of Adnikan Detour at Bureya Reservoir
Authors: Zhdanova S M , Neratova O A 
Published: February 2022

Abstract
The role of innovative technical solutions that are both effective against roadbed deformations and ecological friendly is at rise for new road constructions, renovation of current roads, the Baikal-Amur Mainline (BAM) and Yakutian Mainline (YM) in particular. The task is complicated by a perspective increase of heavy trains and ongoing climate change that must be taken into account for the roads on permafrost and ice-bearing soils. The author’s experience shows the effectiveness of “natural process assistance” approach in solving the above mentioned tasks [1]. The technical solutions are aimed to be economically reasonable, easily producible and adopted in different conditions.
Texture and Mineral Composition of Magmatic Apatite-Nepheline Ores: Technological Consequences (Exemplified by Khibiny)
Authors: Neradovsky Yu N , Kompanchenko A A , Chernyavsky A V 
Published: February 2022

Abstract
The paper considers the relationship between textural and structural features and gross mineral and chemical composition of minerals and the physical properties of apatite-nepheline ores and their processing. It is noted that the change in the physical properties of ores involves primarily the change in their mineral composition due to apatite depletion. An increase in the content of nepheline and pyroxene to 35-55 % sharply increases the ore strength up to 47-104 MPa, which entails the growth of energy consumption for grinding. An important factor is that the ore contains high-strength poikilitic intergrowths of apatite with nepheline, pyroxene, and titanite, in which about 20 % of fine-grained apatite is concentrated, and the extraction of which is a complex technological problem. The authors attribute a change in the chemical composition of apatite to the main factors deteriorating the product quality. According to the studies, the chemical composition of apatite is unstable and varies in the content of P2O5 (37.20-42.6 %), SrO (2.29-5.36 %), and Tr2O3 (0.51-1.05 %). It is noted that a change in the composition may affect the flotation properties and quality of the concentrate.
Welding Technology for Liquefied Natural Gas Tanks
Authors: Zaripov M Z , Yalchigulov R S 
Published: February 2022

Abstract
Liquefied natural gas (LNG) is of great importance in the energy segment of the economy. Natural gas, has a higher calorific value, better fuel efficiency and is more environmentally friendly, thereby gaining more importance compared to oil and coal. Not only does LNG offer greater flexibility in supply, it also has cost advantages for transportation starting from a distance of 2,000 km (at sea) and 4,000 km (on land) respectively. Consequently, the LNG market will grow in the coming decades compared to two other fossil sources - oil and coal. To use natural gas, it is necessary to create safe and economically profitable transportation routes from natural gas deposits to end users. One possibility is to transport gas in a liquefied state, at low temperatures. To ensure safe and reliable storage of liquefied gas at minus 163 ° C, good physical and mechanical properties of the base material and weld (corresponding tank system) are required. To meet these high requirements, appropriate welding methods and welding materials are selected. The paper presents an analysis of activities on the development of new welding materials and improvement of welding technologies for the construction of LNG tanks.
Analysis and Experimental Verification of Model Solutions of the Pekeris Boundary Problem in the Infrasonic Frequency Range
Authors: Kasatkin B A , Zlobina N V , Kasatkin S B 
Published: February 2022

Abstract
A comparative assessment of the known solutions of the Pekeris boundary problem is carried out. A detailed analysis of the generalized solution, which is constructed in a non-self-adjoint model formulation, is carried out. One of the features of the generalized solution is the presence of the vortex component of the intensity vector, the level of which increases with decreasing frequency. The vortex component is recorded in the channels of the vector receiver during an experiment with a noisy object.
Flue Gas-Simultaneous Water and Gas (Flue Gas-SWAG) Injection for Enhancing Oil Recovery
Authors: Gorbyleva Y A 
Published: February 2022

Abstract
This paper discusses the possibility of utilization of exhaust (flue) gases by injecting them into the reservoir. Currently, injection of flue gases into the reservoir is not a widely used method for increasing oil production compared to CO2 or N2 injection. Most of technologies for injecting water-gas mixture using flue gas as a gas provide for water-alternating-gas injection. Only a few studies discuss simultaneous water-alternating-gas injection using flue gases. Moreover, there are few studies on creating a mixture of water and exhaust gases for co-injection by means of pump-ejecting systems into the reservoir. Therefore, in this work we propose a new improved diagram of the laboratory bench using exhaust (flue) gases to create a water and gas mixture for flue gas-simultaneous water and gas injection by means of pump-ejecting system.
Improving Information Cooperation During Search and Rescue Operations in the Arctic Zone of the Russian Federation
Authors: Matveev A V , Metelkov A N 
Published: February 2022

Abstract
A complex analysis of the security situation in the Arctic zone of the Russian Federation shows the limited independent capabilities of the EMERCOM of Russia in solving the problems of search and rescue at sea area across the entire width of territorial waters. An effective method for organizing search and rescue at sea in the Arctic can be interagency and intergovernmental cooperation based on the Agreement on Cooperation in Aviation and Maritime Search and Rescue in the Arctic and the Polar Code. In order to increase the efficiency of the tasks being solved, it is proposed to strengthen the coordinating role of the control bodies of functional and territorial subsystems in their search and rescue activities in internal waters and the territorial sea. The authors proposed a solution consisting of the integration of information resources of information and coordination centers in Murmansk and Petropavlovsk-Kamchatsky with the information capabilities of the functional subsystems of the EMERCOM of Russia and equipping Arctic complex emergency rescue centers with ice-class ships.
Ore Minerals in Technogenic Wastes of the Levikhinsky Mine (Middle Urals)
Authors: Fedorov S , Zavyalov S , Yurak V 
Published: February 2022

Abstract
Technogenic waste from non-ferrous metal mines can be a potential raw material for precious metals. The work carried out research on the material composition of overburden and enclosing rock dumps of such mines - Levikhinsky (Middle Urals). The contents of non-ferrous metals (Cu, Zn), gold and silver were determined on an atomic emission spectrometer with inductively coupled plasma, the mineral composition was determined on an X-ray diffractometer, and ore minerals were examined under a scanning electron microscope. High gold and silver contents were established, comparable to ore content (0.5-3.5 g/t and 2.7-33 g/t, respectively). Gold is mainly found in a microdispersed form, there are single grains up to 4 mm in size. Silver is found in the form of impurities and small precipitates in sulfides. The contents of copper and zinc are quite low (0.01-0.16 wt% and 0.01-0.035 wt%, respectively), which are concentrated in chalcopyrite and sphalerite. With gravity concentration, it was possible to obtain concentrates with a copper content of up to 0.5 wt%, gold up to 46 g/t and silver up to 621 g/t. The data indicate that the use of dumps is promising as a raw material for precious metals and copper.
Inspection of the Underwater Industrial Objects Using AUV Based on the Method of Feature Points Video Recognition
Authors: Inzartsev A V , Panin M A 
Published: February 2022

Abstract
Automated inspection of seabed industrial equipment with the help of AUV assumes its navigational referencing to the inspection object with sub-met er accuracy. That accuracy cannot be achieved on the base of standard onboard navigation equipment. It is proposed to use the method of video recognition of feature points (FP) on the inspected equipment to solve this problem. The FPs are preliminarily determined on the models of objects and downloaded into the AUV control system in the form of three-dimensional sets (clouds). Ensuring stable high accuracy during continuous movement of AUV in inspected objects space is realized through regular updating of the coordinate referencing to the objects. The inspection procedure using this method consists of the following steps:
- the AUV mission specification (including downloading the FPs descriptions),
- launching the AUV and preliminary approach to the inspected objects,
- determining the optimal sequence for bypassing the inspected objects,
- performing the searching procedure for the next FP and navigational reference to it,
- subsequent inspection of the specified fragments of equipment.
At the same time, the logic of the mission execution provides for a dynamic change in the inspection plan in case of failure when any of the planned FP are detected. The paper presents the AUV control system algorithms that implement the described inspection scenario. The approach correctness was investigated using the mathematical modeling methods.
Labile Components of the Amur River Flood Silts
Authors: Kharitonova G V , Makhinov A N , Krutikova V O 
Published: February 2022

Abstract
The paper considers the possibility of inflow and accumulation of pollutants on the Amur River floodplain as a result of floods and deposition of the flood silts (FS). Labile components of FS – water-dispersible clays (WPC) – are a good indicator of transfer and removal of nutrients and contaminants. The study was focused on FS of the floodplain islands below the confluence of the Sungari River (near Khabarovsk, Far East, Russia). It is shown that, the content of major and trace elements in FS corresponds to the average values for sedimentary rocks independently of the flood power. However, after minor flood, there was a significant accumulation of calcium and phosphorus in WDC, which is accompanied by an abnormal accumulation of As up to 70 mg/kg. After the extreme flood, the As content in WDC fell by more than three times, which is associated with the duration of standing water in the floodplain. The latter causes the dissolution and leaching of apatite group phosphates and the arsenates contained in them as impurities. The process of As accumulation in WDC of the flood silts in low-water years (at minor floods) is not critical, but requires monitoring and further research.
Assessment of Risk of Population Health Damage with Polluted Air of Industrial Megacity
Authors: Cherkasova N G , Khilyuk A V 
Published: February 2022

Abstract
The assessment of risk of the population health damage in industrial cities stipulates for a mandatory use of such indicators as expected duration of the working career, the level of life satisfaction and the level of medical service in the region, DALY, climate in the region considered, the state and quality of the natural environment, especially, the state of atmospheric air. Air pollution causes causes the deterioration of organism functions, adaptation and intellectual capabilities of the population. The problem considered in the article involves the activity of specialists on various levels and professional areas in health care, environmental protection, management of vital activities and the regional viability. Joint complex solutions allow developing complementary natural protection and therapeutic measures for improving the population health in the Krasnoyarsk Territory (exemplified by Krasnoyarsk) and decreasing population mortality.
Research of the Range of Location of Bases Track Machine Stations
Authors: Skripachev I F , Skripacheva N L , Belous T V 
Published: February 2022

Abstract
The paper investigates the issues of rational placement of the main structural divisions of the repair complex of the track facilities of JSC «Russian Railways» - the production bases of track machine stations. An analysis of the current situation and the required development of production capacities and technical support of bases for the implementation of the program of track repairs along the railway network is presented.
Forecast of Thermal Mode for the Slope Fill-Up Ground, Considering the Operation of Seasonal Cooling Units in Cryolithic Zone Conditions
Authors: Kurilko A S , Popenko F E , Khokholov Yu A , Romanova E K 
Published: February 2022

Abstract
The article is concerned with the solution of the issue of freezing and stabilization of negative thermal mode for the slopes made of fill-up ground, which are held by a gabion wall in cryolithic zone conditions. To estimate the efficiency of artificial freezing of the slope ground, a mathematical 3D model of heat-exchange processes was worked out, which takes into account the phase change of moisture, freezing temperature, length of cooling devices, their quantity and location, the annual cycle of ambient air temperature and ground bedding. The model takes into account geometrical parameters of the slope and impact of daylight surface. The issue had been solved with numerical technique of finite differences. The calculations indicated the efficiency of implementation of seasonal cooling units for increasing of the fill-up slope stability. Their implementation results in progressive accumulation of cold in its ground. By the end of the fourth year of freezing, the whole mass of the fill-up slope ground turns into a frozen state. When seasonal cooling units were switched off in next years, the frozen area in the fill-up slope remains the same and thermal mode of the slope ground becomes a stable periodic cycle, i.e. expected seasonal temperature oscillations take place.
Operating Modes Management of Oil and Oil Produkt Transport Systems Pipeline Assording to Acceptable Risk-Based Criterion
Authors: Pavlova Z K , Verevkin A P , Pavlova A D , Azmetov K A 
Published: February 2022

Abstract
The paper discusses the solution to the problem of advanced risk management of oil and petroleum product pipeline systems (PS) based on calculating the level of stress-strain state of pipeline structures and reducing safety factors depending on the magnitude, rate, and frequency of pressure changes in the PS. The operating modes of some pipeline systems are characterized by unsteadiness, accompanied by an increased level and frequent changes in the pipe wall stresses and, as a result, increased accident risks. The pipeline systems operating in an unsteady mode include the main oil and petroleum product pipelines (MP), characterized by very long distances. In this case, possible damages to the linear MP parts cause significant loss. Therefore, despite the high reliability of these structures, maintaining an acceptable level of safety margins and the risk of accidents is a rather urgent problem. The risks of accidents are calculated using models linking the process parameters of the PS operating modes and their design characteristics with the permissible stresses in the pipe wall and the pipeline valve installation places.
Increase in Plant Survival in the Processes of Phytoremediation of Oil-Contaminated Soils of the Permafrost Zone
Authors: Lifshits S Kh , Glyaznetsova Yu S , Zueva I N , Chalaya O N 
Published: February 2022

Abstract
Oil and oil products are among the most common soil contaminants. The phytoremediation method is widely used to restore oil-contaminated soils. Permafrost conditions are an additional stress factor for plant growth. The experimental results showed that the dependences of the physiological characteristics of plants on the amount of added oil are nonlinear, which indicates the adaptive nature of these changes. Small amounts of oil (0.16-0.25%) even stimulate plant growth. However, oil additions in excess of 0.82% already inhibit plant growth. The study of increasing plant survival in permafrost soils in a toxic environment (oil pollution) showed that positive results had been achieved by soaking seeds in solutions of biologically active substances. Seed soaking increased the resistance of plants even at the stage of seed treatment, which contributes to their survival in a toxic oil-polluted environment. For example, it is possible to recommend a sowing of Vicia sativa seeds that have been pre-treated by soaking in salicylic acid solutions of different concentrations or humate for increase the effectiveness of measures to clean up areas from oil pollution.
Research of The Stress-Deformed State at the “Shikhanskoe”, “Novobakalskoe”, Developed by the “Siderite” Mines
Authors: Sentyabov S V , Krinitsyn R V , Ushakov E M 
Published: February 2022

Abstract
The stress state in the structural elements of development systems is formed as a function of the design parameters of mine workings, the full stress tensor, which includes gravitational-tectonic and time-varying stresses acting in the rock mass at the time of the start of research, taking into account the physical and mechanical properties of the rock massif, modulus of elasticity and additional stresses caused by a subsequent change in the stress field, caused outside the zone of influence of mining by a cyclical change in natural stresses, and in the zone of influence of the mined-out space - by a change in the secondary stress field.
An assessment was made of the possibility of self-collapse of overlying rock masses near the workings of block No. 10, No. 20, No. 11, MBTs10-20, No. 21 in the conditions of its undermining by underground mining of horizons 540 m and 480 m of the Sideritovaya mine, and recommendations were developed to ensure production safety works.
On the basis of mining and technical documentation of the mine, field and laboratory measurements, an analysis of the mining and geological conditions of development of the investigated deposits, an analysis of the natural stresses of the deposit was carried out, the physical and mechanical properties of rocks were studied, the calculation of the stress-strain state of the rock mass at operation of the Sideritovaya mine near the mine workings of blocks No. 10, No. 20, No. 11, MBTs10-20.
An assessment was made of the current state of the stress state at the field, as well as the associated components of the natural environment, and the compliance of this state with the requirements of norms, standards and conditions for the extraction of minerals.
The current, operational forecast of changes in the stress-strain state in the field and in the zone of significant influence of its development has been compiled.
The presented results of the studies, which significantly increase the degree of geomechanical study of the rock massif of the Bakalskoe deposit. The main purpose of the research was to determine the parameters of the initial stresses acting in the rock mass.
Application Statistical Models for Interpretation Toxicological Data
Authors: Latypova T R , Stepanova N Yu 
Published: February 2022

Abstract
The results of bioassay on infusoria of 75 samples of bottom sediments from 6 water bodies of the Middle Volga region were analyzed using traditional nonparametric methods and statistical models Generalized linear mixed model (GLMM) and Cumulative link mixed model (CLMM). The ambiguity of the interpretation of the results of biotesting performed by nonparametric methods is due to the fact that the toxicological data often do not correspond to the normal distribution. The use of the GLMM and CLMM models allow analyze data that do not correspond to the normal distribution and made it possible to clarify the level of toxicity of a number of ambiguous samples, which, after processing by mathematical model algorithms, acquire the status of either exactly toxic or exactly non-toxic.
Prospects of Oil and Gas Potential of the Middle Paleozonic Deposits of Eastern Yakutia from Historical Viewpoint of Geological Development
Authors: Sivtsev A I , Petrov D M , Ivanova Z E 
Published: February 2022

Abstract
The article considers the prospects of oil and gas potential of the Middle Paleozoic deposits of Eastern Yakutia. Based on the study of the peculiarities of bitumen content intervals of the Silurian-Devonian deposits of Selennyakhsky block, it was concluded about high oil and gas potential of the domanicoid Middle Paleozoic deposits of the Omulevsky terrain. Under favorable structural and tectonic conditions and immersion to shallow depths, Middle Paleozoic deposits can contain oil and gas deposits to clarify the most promising subsoil areas, the author’s version of the geological development history of Eastern Yakutia is proposed. The diagrams of the completenses of the main sedimentary complexes are compiled: Middle Devonian-Lower Carboniferous, Upper Paleozoic-Lower Mesozoic, Upper Jurassic-Lower Cretaceous and Upper Cretaceous-Cenozoic. Based on the constructed diagrams of the thicknesses of sedimentary complexes and the shown horizontal displacements, the Tastakhsky depression is identified as the most promising territory. It is assumed that there is a section of the Middle Paleozoic rift basin, slightly affected by the collision. Additionally, the prospects of oil and gas potential of the Upper Jurassic-Lower Cretaceous complex of deposits are substantiated and presented.