ISSN 0132-2222 Scientific-technical journal AND COMMUNICATION IN OIL INDUSTRY published since 1973 June 2018 ¹ 6 12 issues per year
CONTENÒS |
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MEASURING, AUTOMATION, TELEMECHANIZATION AND COMMUNICATION FACILITIES |
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Slepukhov A.V. An overview of use of fiber-optical sensors in oil and gas industry (p. 5‑10) |
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Vlasova E.P., Korobeynikov S.S. Automatic synchronization of parallel work of gas turbine power station (GTPS) in oil and gas fields (p. 13‑17) |
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MATHEMATICAL MODELING AND SOFTWARE |
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Osetinsky N.I., Kochueva O.N. Some issues of invariant analysis of linear control systems (p. 48‑52) |
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Information on the articles |
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UDC 681.5:622.276+622.279 DOI: 10.30713/0132-2222-2018-6-5-10
AN OVERVIEW OF USE OF FIBER-OPTICAL
SENSORS
A.V. Slepukhov
Tyumen Industrial University 38, Volodarsky str., Tyumen, 625000, Russian Federation, e-mail: a668776@yandex.ru
The article overviews the use of fiber-optic sensors in the oil and gas industry. Technical solutions, the effectiveness of which is confirmed by laboratory and field tests are considered.
Keywords: fiber-optical sensors; monitoring; pipeline; intellectual well.
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UDC 681.5:622.276 DOI: 10.30713/0132-2222-2018-6-11-13
METHODICAL ERROR OF MEASUREMENT OF OIL
AND
Yury Arshavirovich Dadayian, Cand. of tech. sci., assistant professor, Igor Yurievich Khrabrov, Cand. of tech. sci., assistant professor
Gubkin Russian State University of Oil and Gas (NRU) 65, Leninsky prosp., Moscow, 119991, Russian Federation, e-mail: yury.dadayan@gmail.com
The article considers one of the methods of quantitative accounting of oil and liquid petroleum products in storage facilities, particularly, in tanks of oil tank farms and in other oil enterprises. When implementing the operational control of the amount of the stored liquid petroleum products in the tank, the indirect method of static measurements (volumetric-weight) is often used, which defines the integral mass of the liquid in the tank as the product of the volume, occupied by the liquid, by the average density of the oil product. The average density is determined in the central part of the liquid entire volume, without accounting of the discrepancy between the average density of the peripheral part of the tank (the area adjacent to the side walls) of the average density of the central part of the tank where sampling is carried out. Because of the above-said discrepancy, a methodical error when determining the liquid mass quantity in the tank by the bulk-weight method application, which is considered in this article, arises.
Keywords: measurement; storage tank; capacity of the tank; volume-weight method; mass quantity of liquids; errors.
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UDC 621.311:321.398(075) DOI: 10.30713/0132-2222-2018-6-13-17
AUTOMATIC SYNCHRONIZATION OF PARALLEL
WORK
E.P. Vlasova, Cand. of tech. sci., assistant professor, S.S. Korobeynikov, graduate student
Tyumen Industrial University 38, Volodarsky str., Tyumen, 625000, Russian Federation, e-mail: vlasovaep@tyuiu.ru, aciannis@gmail.com
The article presents the development of a system for automatic regulation of a gas turbine power station (GTPS) at Priobskoye field, which allows to determine the optimal parameters of the synchronization process characteristics. The proposed automatic control system makes it possible to reduce the time that is required for putting the spare generator into parallel operation and to ensure the optimal distribution of constantly changing demanded power by electric power consumers between parallel-running generators.
Keywords: automatics; optimal parameters of synchronization characteristics; automatic angle adjustment system; rotation frequency.
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UDC 681.5:622.276 DOI: 10.30713/0132-2222-2018-6-18-20
DEVELOPMENT OF A METHOD AND A DEVICE TO
DETERMINE
Ab.G. Rzaev
Institute of Control Systems, NASA 9, B. Vakhabzade str., Baku, AZ1141, Republic of Azerbaijan, e-mail: abbas_r@mail.ru
S.R. Rasulov, M.A. Saliy, V.V. Orudzhev
Azerbaijan State Oil and Industry University 34, Azadlyg prosp., Baku, AZ1010, Republic of Azerbaijan, e-mail: rasulovsakit@gmail.com
The article considers the problems of development of a method to be applied for determination of hydraulic conductivity in a well normal operating mode and a device that will realize this method. The proposed method of a hydrodynamic research allows to define permeability of an oil formation during infrared radiation impact on oil and to reveal the dependence of oil permeability and viscosity coefficient on the optical density of oil. The device to be used for determining of an oil formation hydraulic conductivity is developed.
Keywords: hydraulic conductivity; oil formation; well; filtration; pressure; viscosity; optical density; device.
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UDC 681.5:622.276 DOI: 10.30713/0132-2222-2018-6-21-31
METHODOLOGY OF CONSTRUCTING A STRATIFIED
GRID-SYSTEM
Ivan Sergeevich Arsenevsky, post-graduate student
Gubkin Russian State University of Oil and Gas (NRU) 65, Leninsky prosp., Moscow, 119991, Russian Federation, e-mail: arsenevsky@mail.ru
The article studies a grid-system concept as a means of intensification of information resources application when analyzing the efficiency and planning of oil fields waterflooding. A variant of a methodology of grid-systems construction based on the information hierarchy model of decomposition macro-tasks of fields data processing as well as modern methods of information resources organization are proposed. A method of complex tasks partial decomposition is considered and criteria of efficient implementation of the described grid-system are defined.
Keywords: grid-system; contour waterflooding; hierarchical analysis; hardware backup; resource stratification.
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UDC 681.5:622.279 DOI: 10.30713/0132-2222-2018-6-31-36
METHODS OF A TRAINEE ACTIONS EVALUATION
IN COMPUTER
Olga Nikolaevna Kochueva, Cand. of tech. sci., assistant professor
Gubkin Russian State University of Oil and Gas (NRU) 65, Leninsky prosp, Moscow, 119991, Russian Federation, e-mail: pmkm@gubkin.ru
Technological objects of pipeline transport refer to the high-risk ones due to a high danger of operational factors of the pumping process and properties of transported fluids. Use of computer simulator complexes improves the efficiency of operational skills training and testing of specialists that solve the problems of dispatcher operational control of technological processes in oil and gas transportation. A trainee actions evaluation should involve the variety of factors, such as the absence of the technological restrictions violations, following the delivery plan at the borders of a gas transportation system, operational costs of fuel gas or electricity consumed during gas compression. Two approaches to formation of a trainee actions evaluation in computer simulator complexes are considered, namely, using of weighting factors for evaluation criteria and forming of fuzzy logics methods. The proposed system of a trainee actions evaluation uses the Sugeno algorithm and can be applied in training tasks both for the standard and emergency situations.
Keywords: computer simulator complex; dispatching personnel; trainee actions evaluation; fuzzy model.
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UDC 681.5:622.276+622.279 DOI: 10.30713/0132-2222-2018-6-37-44
CALCULATION OF WELLS FLOW RATES BY THE
DATA
Kurban Sapizhullaevich Akhmedov, Cand. of tech. sci., Ramiz Alidzhavad Gasumov, Dr. of tech. sci., Professor, Vladimir Alexandrovich Tolpaev, Dr. of phys.-math. sci., Professor, Svetlana Anatolievna Gogoleva
LLC "Gazprom Proyektirovaniye", a branch in Stavropol 419, Lenin str., Stavropol, 355000, Stavropol region, Russian Federation, e-mail: kurban2000@mail.ru, GasumovRA@scnipigaz.ru, v.a.tolpaev@mail.ru, gogoleva.s.a@yandex.ru
The article proposes a method that allows to predict wells’ maximum-permissible flow rates, the excess of which brings destruction of a formation bottom-hole zone, by wells testing data. The method proposed allows to reasonably propose the time-period of the regular well testing, to flexibly control fields development and to plan reasonable natural gas production rate of every well at the field. The comparative calculations made by the proposed method of wells predicted flow rates, based on Forchheimer and Barry – Conway filtration laws, allows to estimate the prediction precision and the horizon depth.
Keywords: estimated rate of flow; well testing; reservoir pressure; wellbore intervention; Darcy law; Forchheimer law; Barree and Conway law.
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UDC 622.248.3 DOI: 10.30713/0132-2222-2018-6-45-47
THE CONDITIONS OF CONJUGATION OF GAS
PRESSURE AND
Zoya Alexeevna Vasil'eva, Cand. of techn. sci., assistant professor
Gubkin Russian State University of Oil and Gas (NRU) 65, Leninsky prosp., Moscow, 119991, Russian Federation, e-mail: zoyavac@gmail.com
When developing the conditions of conjugation of gas pressure and temperature fields that is produced from a well-formation, the bottom-hole zone effect is proved for the first time: the flow rate at the exit from the porous medium is significantly higher than the flow rate at the entrance to the lift pipe, thus provoking a corresponding decrease of pressure and temperature due to gas throttling. In low-temperature wells, when the thermobaric conditions are close to the equilibrium hydrate formations, such cooling can lead to hydrates formation, first of all, at the gas outlet from a formation.
Keywords: simulators integration; pressure reduction; gas throttling; mechanical energy for a steady flow; hydrates formation.
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UDC 681.5:622.276+622.279 DOI: 10.30713/0132-2222-2018-6-48-52
SOME ISSUES OF INVARIANT ANALYSIS
Nikolay Iosiphovich Osetinsky, Cand. of phys.-math. sci., Professor, Olga Nikolaevna Kochueva, Cand. of tech. sci., assistant professor
Gubkin Russian State University of Oil and Gas (NRU) 65, Leninsky prosp., Moscow, 119991, Russian Federation, e-mail: pmkm@gubkin.ru
Modelling of the production and control processes (production facilities) involves a wide range of modern mathematical methods, such as linear algebra, multivariable analysis, the theory of dynamic systems and the control theory. The article considers the multidimensional linear control systems, their space and state; the algebraic functions from the system parameters remaining invariable upon transition to other systems of coordinates, in other words, invariants of the dynamic system are studied. The invariants reflect various physical conservation laws, for example, the law of energy or impulse conservation and characterize qualitative properties of an object, for example, stability of the system – it is its internal property and it depends on the coordinate system choice. The system invariants while transforming coordinates in the space of its states are researched in the paper. It activates groups of nonsingular square matrixes that influence the space of the linear control systems. The invariants space basis is found. In cases of presence of linear systems with one-dimensional inputs or outputs it is proved that this basis is free, that is between its elements there are no algebraic relations, and for the systems with multidimensional inputs and outputs the property of elements freedom of the invariants basis isn't true.
Keywords: control system; states; replacement of coordinates; actions on systems space; dimension; basis of invariants.
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