Automation, Telemechanization and Communication in Oil Industry

The article describes the proposed method to automate the ventilation process of a slope block and an oil mine in the whole. The air that enters the slope block of the oil mine is divided into two streams: one of them, due to the operation of the local ventilation fan (LVF) passes to the outgoing mine openings, and the other one goes to the drilling gallery if there are people in it or just before they enter the working area. The air outlets from the drilling gallery along the ventilation well due to the natural draft (thermal drop of ventilation pressure), that inevitably occurs during ventilation. During miners’ absence in the drilling gallery, the air does not enter it. The slope block is ventilated only in the miners’ presence in it or directly prior to their appearance. At elevated temperatures in the drilling gallery, an underground air conditioning system can be used. The air parameters and the absence of various gases in the working area in dangerous concentration are controlled by the corresponding sensors, the information from which is gathered by the programmable microcontroller. This method application will reduce the energy cost of ventilation of slope blocks and an oil mine in the whole.

Keywords: oil mine; slope block; energy efficiency; natural draft; thermal drop of ventilation pressure.

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UDC 621.317.39

A DEVICE THAT CONTROLS WASHING FLUID PRESSURE
DURING DRILLING (p. 10)

Yu.M. Ovchinnikova

Tyumen Industrial University (TIU)

38, Volodarsky str., Tyumen, 625000, Russian Federation

The article describes the way to control the hydrodynamic pressure of a drilling fluid inside the drilling tool during drilling, based on the method of sound absorption of sound vibrations frequencies from the poly-harmonic spectrum corresponding to the controlled hydrodynamic pressure.

Keywords: drilling; well; drilling tool; bit; column; the Helmholtz resonator; hydrodynamic pressure; washing liquid; absorbed frequency; resonance; poly-harmonic spectrum; spectrogram.

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UDC 550.8.053:550.8.023:550.8.028:53.082.13

DEVELOPMENT OF A METHOD
FOR STUDYING ROCKS STRENGTH CHARACTERISTICS
BY MEANS OF A FULL-SIZE CORE PROFILING (p. 12)

I.A. Verkhushin^{1, 2}, leading specialist, post-graduate student,

K.V. Toropetsky¹, leading expert,

V.N. Ulyanov^{1, 3}, Cand. of tech. sci., assistant professor, Technical Director,

G.A. Borisov¹, Cand. of phys.-math. sci., General Director

¹LLC "NovosibirskNIPIneft"

20, Inzhenernaya str., Novosibirsk , 630090, Russian Federation

² Institute of Theoretical and Applied Mechanics (ITAM), SB RAS

4/1, Institutskaya str., Novosibirsk, 630090, Russian Federation,

e-mail: igor.verkhushin@gmail.com, iverkhushin@nsknipi.ru

³ Novosibirsk State University

2, Pirogov str., Novosibirsk , 630090, Russian Federation

The article presents a technique of continuous determination of rocks elastic-strength characteristics by the method of controlled scratching (scratch test). An installation that makes it possible to get the information about scratch resistance on cylindrical samples of synthetic and natural materials (cores) as well a technique that allows to recalculate the obtained forces into a uniaxial compressive strength are developed. To evaluate the Young's modulus in addition to the recorded forces, a lithologic dismemberment of the core column is required.

Keywords: full-size core; material synthetic models; scratch test; stress-related properties; profile measurements; hardness; sclerometry.

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UDC 622.276.522

MATHEMATICAL MODELING
OF NON-ISOTHERMAL FILTRATION OF THE GASSED OIL
WITH ACCOUNT OF ROCKS NON-EQUILIBRIUM DEFORMATİON (p. 17)

Arif Mehdi Quliyev,

Ramig Mamedhasan Efendiyev,

Bunyad Zinhar Kazymov,

Kemalya Kochari Nasirova

Institute of Oil and Gas, National Academy of Sciences of Azerbaijan Republic

9, Fikret Amirov str., Baku, AZ1000, Republic of Azerbaijan,

tel.: (+99412) 539-35-31,

e-mail: arifquliyev1933@gmail.com

The article studies the problem of the indicators definition of an oil formation development in the gas dissolved mode with account of rocks non-equilibrium deformation and the formation temperature change. The results of a numerical experiment, conducted to solve the problem are presented and the changes of the defined indicators in case of non-equilibrium and nonlinear elastic-deformable rocks presence are analyzed.

Keywords: development indicators; deformation; non-equilibrium; temperature; dissolved gas.

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UDC 681.5:622.276

THE METHOD OF CAVITATION CORROSION MICROSCOPIC MODELING
DURING OIL MOVEMENT IN PUMPING UNITS (p. 22)

Igor Sergeevich Stupin, post-graduate student

Gubkin Russian State University of Oil and Gas (National research University, NRU)

65, Leninsky prosp., Moscow, 119991, Russian Federation,

tel.: 8 (499) 507-88-88,

e-mail: jukebox-records@inbox.ru

The article briefly characterizes the conditions of technological processes in oil and gas industry, which induce nonlinear response to control impact. Turbulent flow in oil pumping units causes cavitation corrosion of metal parts. The problem of cavitation corrosion modeling during oil movement in pumping units was chosen as a subject of this research to predict and finally to prevent the untimely wear-out of the equipment. A detailed physicochemical description of the cavitation corrosion process is given. A variety of technological processes simulation methods is described. To solve the above-said problem, the cellular automation is chosen as a simulation methodology for the multi-agent systems. It is suggested to use a stochastic cellular automation to solve the problem of cavitation corrosion simulation in case of the gas-oil fluid contact with metal surfaces inside a pumping unit. Computational modeling of a metal surface micro-portion, contacting with the fluid aggressive environment was conducted. At each simulation step, the model was subjected to statistic processing in order to calculate the mass gain of the oxidized metal. When comparing the results with the theoretical values, the adequacy of the cellular automation to simulate the cavitation corrosion process was proved.

Keywords: non-linearity; oil pumping units; simulation; cavitation corrosion; stochastic cellular automation.

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UDC 517.37; 519.677

CALCULATION OF PETROLEUM PRODUCTS VOLUME
IN CYLINDRICAL VESSELS DEPENDING ON FILLING LEVEL (p. 26)

Alexey Vladimirovich Mezentsev, Cand. of phys.-math. sci., assistant professor

Ural State University of Railway Transport

66, Kolmogorov str., Yekaterinburg, 620034, Russian Federation,

tel.: 8 (343) 221-24-04,

e-mail: AMezentsev@usurt.ru

Special calibration tables are compiled to measure the volume of oil and petroleum products in railroad tanks. Calculation methods of compiling tables for railway tanks calibration are described in the tables early editions of the 1980s. They contain appendices describing the method of tanks interval calibration, with account their geometric specific features in the form of mathematical formulas. The article shows that some of the formulas in the appendices are inaccurate and require clarification. The article proposes a calculation method to calibrate a horizontal cylindrical container with sidewalls in the form of spherical segments. An exact formula is obtained to calculate the volume of the spherical segment portion, by means of which the spherical part of the 16-type tank was calibrated. The resulting formula allows to build "level-volume" conversion tables with any step size in height and accuracy. Besides, its basis provides possibility to compile a computer program that calculates the volume at any level of filling.

Keywords: formula to calculate the volume of a ball segment part; calibration of cylindrical containers with side walls in the form of ball segments.

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UDC 622.279:681.5

METHODOLOGY OF GAS RESERVES CALCULATION IN DENSE COLLECTORS,
BASED ON THE ANALYSIS OF PRODUCTION DATA (p. 31)

Zhou Qiaofeng,

Abdumalik Talat Gayubov

Gubkin Russian State University of Oil and Gas (National research University, NRU)

65, Leninsky prosp., Moscow, 119991, Russian Federation

The world experience of hydrocarbon fields development proves the fact that one of the most important problems when developing oil and gas fields is hydrocarbon reserves calculation, the order of which is conditioned by the determination of a well grid density and the rate of hydrocarbons recovery as well as the design of fields development systems. Over the past decade, the technology of drilling horizontal wells (HW), applying the method of the multi-stage hydraulic fracturing (MSHF) is widely used to extract oil and gas reserves from unconventional sources. Gas reserves calculation of a separate HW by applying MSHF method is very important when developing gas fields. The purpose of the article is gas reserves calculation per a well in dense collectors based on the analysis of production data. Gas reserves are calculated using both the analytical relationships and the numerical simulation method. The proposed methodology allows to assess hydrocarbon reserves dynamics and to determine the main characteristics of a formation. This method of the field data analysis allows to study a well without production losses caused by wells shutdown, that’s’ why it is of practical importance. The application of the proposed methodology to calculate gas reserves in the HW, subjected to MGRP, is illustrated by an example of the field data use in one of the People’s Republic of China (PRC) deposits. It is important to note that the results of gas reserves calculation by applying the analytical method and the method of numerical simulation are very close. The proposed method application made it possible to estimate gas geological reserves of one of the operational deposits of the PRC field. The gas reserves calculated by applying the analytical method are somewhat overstated (by 9 % in the case under study). It is explained by the fact that the analytical model is more ideal and does not account for the influence of cracks resistance. The numerical modeling in general allows to obtain more accurate results, since it accounts for a larger number of factors involved in gas reserves calculation.

Keywords: horizontal well; multi-stage hydraulic fracturing of a formation; gas reserves calculation; analytical method; numerical modeling; field data analysis; field of the People's Republic of China.

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UDC 004.81

STUDY OF A FUZZY AUTOMATED CONTROL SYSTEM
IN VIEW OF THE GENERALIZED STABILITY THEORY (p. 34)

Kifayat Aslanovna Mammadova, Cand. of tech. sci., assistant professor

Mingechaur State University

21, D. Alieva str., Mingechaur, AZ4500, Republic of Azerbaijan,

e-mail: ka.mamedova@yandex.ru

The article studies the methodology of fuzzy modeling of an automated control system to assess its latest structural possibilities and to test its stability. The problem of the linear non-stationary robust control in conditions of incomplete information when treating oil is discussed.

Keywords: conditions of stability; robust control; nonlinear systems; fuzzy automated control systems; theory of stability.

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JSC "ALL-RUSSIAN SCIENTIFIC-RESEARCH INSTITUTE OF ORGANIZATION, MANAGEMENT AND ECONOMICS OF OIL AND GAS INDUSTRY"

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