The aim of the presented work is to show the possibility of estimating the crack resistance of a pipeline with a surface crack located on the inner side of the wall using the recorded deformation response on the outer surface during loading / unloading of the pipeline. The solution of this problem is carried out in two stages: at the first stage, the localization and geometrical parameters of the defect are determined on the basis of mathematical processing of displacements fields of points on the pipeline surface in the defected area recorded by optical methods. At the second stage, the singular and nonsingular terms of stress expansion in the vicinity of the crack front are calculated to apply the crack resistance criteria of the so-called two-parameter fracture mechanics.
Posts in category Issues
Chernyatin A. S., Razumovsky I. A., Zorin A. E., Zorin N. E.Evaluation of the crack resistance of a pipeline with an internal crack by the deformation response on the outer surface
Nikulin S. A., Karnavsky E. L., Aginey R. V.Research of efficiency of security electrochemical protection from corrosion for pipelines prepared for reconstruction with method “pipe in pipe”
The questions of recovering protective potential on underwater transitions of pipelines, in the presence of damages of insulating covering are considered. The way of ensuring security by means of laying of extended anode grounding in a conducting cover is considered. Use of a conducting cover with various specific electric resistance is offered. By results of mathematical modeling it is proved that application of a conducting pipe with various specific electric resistance allows to achieve more rational distribution of potentials with reduction of current of station of cathodic protection.
Kamenskikh S. V., Ulyasheva N. M.Evaluation of the effect of buffer liquids on the intensity of destruction of filter cakes in casing
The article deals with the problem of removal from the wall of the wellbore formed by drilling mud filter cake, which, on the one hand, greatly reduces further penetration of the flushing liquid into the reservoir, and on the other prevents a reliable separation of the seams while cementing casing. In the work conducted and presents the results of laboratory tests for the assessment of washing ability of different buffer liquids, including solutions of inorganic salts (electrolytes) with the addition of the stabilizer is CMC as using additional reagents (NTF and Atren SA), and without them. Based on the conducted experiments and investigated the dependence of the cleaning ability of buffer liquids of the type and concentration of drilling fluids, inorganic salts and additional reagents, etc.
Vasilyev S. I., Ortman A. S., Zhubrin V. G., Neudachin D. V.The results of the study of the characteristics of seasonally frozen soils, insulated with urea foam
The possibility of protecting soils from seasonal freezing, to reduce their strength during construction and remediation of oil and gas fields development sites, is considered. The results of the study of the temperature and strength of the soil in the range of regional depths of seasonal freezing from 100 mm to 1200 mm are presented, graphs of the temperature of the soil in this depth range depending on the ambient temperature and the period of soil freezing are obtained. The minimum acceptable thickness of carbamide foam is justified.
Salnikov A. V. Industrial refining of oil in the North of Russia in the XVIII century: «a chemical factory» owned by F. S. Pryadunov
In the series of articles, the development and the current state of the issue of industrial oil bifurcation in the North of Russia in the 18th century are considered. Based on the analysis of the sources discovered to date, the background and possibilities of the development of oil refining, produced on the Ukhta River in the period from 1746 to 1767, are considered. This article attempts to summarize the results of research on this issue, conducted in the middle of the twentieth century.
Ivanov S. L., Ivanova P. V., Kuvshinki S. Y., Shibanov D. A. Assessment of the impact of weather and climate factors on the fault tolerance of the equipment of the mineral complex
(Russian) В статье указаны факторы, влияющие на работоспособность технологических машин нефтяной и горной отраслей промышленности при их круглогодичной работе в условиях внешней среды. Рассматривается влияние погодноклиматического фактора на работоспособность таких машин Погодно-климатический фактор является одним из наиболее неблагоприятных – с ним связано 17 % отказов механического оборудования машины. Предложено учитывать влияние погодно-климатического фактора на работу карьерных экскаваторов через комплексный показатель – индекс жесткости погоды, учитывающий влияние параметров как холодного, так и жаркого климата на протяжении всего календарного времени работы машины.
Birillo I. N., Shishkin I. V., Kuzbozhev P. A.Research of influence and nature of the dynamic loading of technological pipeline of gas-distribution station
(Russian) В процессе эксплуатации газораспределительной станции на технологической трубопроводной обвязке узла редуцирования, помимо статической нагрузки от давления транспортируемого газа (трубопровод высокого давления), наблюдается динамическая вибрационная нагрузка (трубопровод низкого давления). В статье описаны результаты исследования механических характеристик металла трубопроводной обвязки, приведен сравнительный анализ показателей механических характеристик относительно условий эксплуатации. Исследован и визуализирован характер динамической нагрузки на узле редуцирования.
Yagubov Z. Kh., Shichev P. S. To the question of the development of the structure of an automated system for technical diagnostics of pumping units in oil mines
In the article sets out forth recommendations for resolving general issues related to the organization of an automated monitoring and control system for the technical diagnostics of pumps operated in oil mines. Submitted a generalized structure and description of the composition and functions of the levels of the typical automated diagnostic system, submitted a principled the order of the work of the system. Designated the general requirements for control and measurement, operation and signaling equipment of the automated diagnostic system. It is noted availability the necessary’s to create a system of devices serially produced by domestic manufacturers. It is noted availability the necessaries devices to create systems that are serial releasing by domestic manufacturers. Keywords: technical diagnostics, automated system for techni
Dudnikov V. Y., Osadchaya G. G.Formation of the content of training at the USTU, taking into account the cryological aspect
The article notes the need to strengthen the adaptation of the educational pro-cess in the areas of training and specialties of the USTU to the northern specifics. The experience of formation of the content of teaching at the University is given, taking into account the cryological aspect of the basic educational program of the training direc-tion 05.03.06 Ecology and Nature Management.
Salnikov A. V., Shcherbatyuk Y. V.Evaluation of the effectiveness of the use of solvents for cleaning small-diameter pipelines from asphalt-tar-paraffin deposits
In the article the questions of the estimation of the effectiveness of the use of the solvents Azol 4020, Nefras-S2-80 / 120, toluene (methylbenzene), acetone (dimethyl ketone), n-hexane for the cleaning of small diameter pipelines from asphalt and resin paraffin deposits. The results of laboratory studies on the effect of changing the tem-perature of the solvent and the rate of washing on the removal efficiency of asphalt-tar-paraffin deposits from such piping are presented.
Nekuchaev V. O., Mikheev М. M.Influence of heat treatment and ultrasound on the viscosity of high-paraffinic oil of the Kyrtaelsk deposit of Komi Republic
The paper studies the flow curves, from which the values of viscosity, high-par-affin oil of the Kyrtael field of the Komi Republic at low temperatures, exposed to heat (heat treatment) and ultrasonic treatment. It is shown that the effect of acoustic treat-ment on the rheology of the oil is similar to the effect of heat treatment when heated to the same temperature. Heating up to 80°C significantly reduces the viscosity and thix-otropic properties of Kyrtael oil at low temperatures at both heating methods. Heat treatment and ultrasonic heating to temperatures in the range of 40-60 °C significantly worsen the same rheological properties.
Kuzin A. V.Problems and prospects of geological study siliceous strata sublatitudinal 20 km north Yekaterinburg
Studied strata sublatitudinal chert, siliceous shale, mudstone, siderite, occurring in sub-vertical position. Power thickness of more than 5 km stretch from west to east 20 km. Objective – to determine the direction of incidence strata of sources and deploy-ment time, formation type column and its metallogenic specialization. Methods – con-ducting electric and magnetic survey, radiometric shooting on the local area, sam-pling, study of thin sections and polished sections. The plot is located in the central part of the area of known mineralization elliptical arsenic species, sulfosalts, tellu-rides, controlling its placement in the southern part of Berezovsky, and in the north – Blagodatsky gold deposits. Overall precipitation flyschoid sequences assigned to the formation. It was found north direction cut capacity, the presence of dislocation frac-ture, metasomatic sericite-calcite-sulfide study species, the presence of layers of hem-atite schist by siderite. The density, magnetic susceptibility, radioactivity, electrical resistivity of various lithological varieties of rock strata in the samples and in situ. The presence of clay layers of tape, allegedly formed in the Cenozoic-Neogene in the res-ervoir, the bottom and the shores of which were presented siliceous shales occurring in sub-vertical position. Dextral dislocation flyschoid thickness and its inclination to the north occurred before the introduction of the Carboniferous in the large Verch-Iset granodiorite massif, before the formation of the average thickness of the Devonian volcanic rocks of andesite formation. Results can be used to predict the deposits of oxidized iron ore, gold mineralization on the electrochemical barrier at the intersec-tion of gold-bearing dykes of granite porphyry and hematite schists.
Terentyev A. A., Durkin S. M.A comparison of the different approaches of the forecast of technological parameters of development of deposits high-viscosity oils
As the reserves of light oils are developed more and more ahead of time, the problem of involving abnormally viscous oils and bitumens in the active development of huge resources becomes more and more urgent from year to year. The experience of laboratory and field studies accumulated to date shows that the most effective and industrially developed technology for the development of such resources is thermal methods of oil production. One of the most important tasks in the design of fields is to predict the volume of oil production. It is extremely important for the management of
oil companies to determine the payback period based on the forecast of recoverable products. In this work is the calculation of the technological parameters of thermal-mining development for the sector B mining unit 2T-4, which will be developed mod-ernized thermal-mining system. Forecasting of productive characteristics was per-formed using numerical modeling, construction of one-factor statistical regression on the actual data of experimental sites OPU-2 bis, OPU-3 bis and using an analytical method for calculating technological indicators of development.
Kamenskikh S. V., Ulyasheva N. M.Evaluation of the effect of buffer liquids on the intensity of destruction of filter cakes in casing
he article deals with the problem of removal from the wall of the wellbore formed by drilling mud filter cake, which, on the one hand, greatly reduces further penetration of the flushing liquid into the reservoir, and on the other prevents a reliable separation of the seams while cementing casing. In the work conducted and presents the results of laboratory tests for the assessment of washing ability of different buffer liquids, including solutions of inorganic salts (electrolytes) with the addition of the
stabilizer is CMC as using additional reagents (NTF and Atren SA), and without them. Based on the conducted experiments and investigated the dependence of the cleaning ability of buffer liquids of the type and concentration of drilling fluids, inorganic salts and additional reagents, etc.
Vishnevskaya N. S., Garin M. A.Maintaining the reliability of ball valves during operation in winter in the Far North
One of the most important tasks determining the safety of the environment during operation and maintenance of ball valves in the winter in the Far North is the efficiency and trouble-free operation of the gas pipeline.
The frequency of the complex of operations TO-2 is carried out according to the approved schedule of work 1 every 6 months.
Seasonal maintenance of the TO-2 is carried out in the preparation of valves for the autumn-winter and summer periods of operation.
The restoration of the ball valve performance is presented in two variants: 1 – without a project; 2 – with a project.
Mihajlović S., Simić N., Dobrilović D., Desnica E., Radosav D.Internet of Things and WSN technology applications in Oil and Gas industry
Digital technologies are a considerable factor in the oil and gas industry. In the post-Internet global information era, the Internet of Things (IoT) paradigm is consid-ered as both technology and economic wave. Wireless sensor networks (WSN) repre-sent one of the key enabling technologies for IoT. IoT connects all things to the Internet and between each other and achieves the goal of intelligent identifying, managing, monitoring, locating, and tracking as well. In this paper WSN and IoT some interesting applications in oil and gas industries around world were represented.
Marenich K. N., Dubinka E. S.Suppression of the reverse energy flow of an induction motor as a factor of increasing the electrical safety of the electrical complex
The industrial operation of mine precinct electrical complexes is associated with the probability and risks of damaging flexible cables of power connections and, as a consequence, the occurrence of accidents and hazardous electrical conditions.
It is established that the protective shutdown function of multi-machine, power-ful electrical systems is insufficient, and priority should be given to automatic two-way de-energization of emergency power connections.
The rationality of the effect of induction-dynamic braking of an induction motor of a consumer as a means of suppressing its reverse energy flow in the case of an emergency (dangerous) condition of the supply cable is proved
Ivenina I. V, Smirnov Yu. G., Lyutoev A. A.Method of express analysis of residual oil containing water
The paper describes a method for express analysis of the composition of water samples for the content of residual oil in them using a series of calibration solutions on a spectrophotometer using the wavelengths of the visible part of the spectrum. The method can be used for express diagnostics of water purification efficiency from oil pollution.
Morozova Z. V., Salnikov A. V. Development of a protective coating for structures with increased corrosion resistance and icing resistance
The article deals with the development of protective coatings of structures with high corrosion resistance and resistance to leaking. Based on analytical and experimental studies, a multi-layer composite design of the protective coating was proposed and its components were selected, its effectiveness was experimentally evaluated.
Nor M. A., Nor E. V., Tskhadaya N. D.Analysis of the safety of the mining combine during the construction of oil tank
The article describes the experience of using mining combines at the Yarega oil field. To date, data have been obtained both in the construction of mine workings by the combine method, and their operation at extreme temperatures at the final stage of development. An assumption was made about the superiority of the drilling and blasting method of penetrating mining in the oil-bearing formation in terms of ensuring the safety of construction and operation.