Prospecting and Development of Oil and Gas Fields <p>The "Prospecting and Development of Oil and Gas Fields" includes the following sections of Oil and Gas Engineering:</p> <p>&nbsp;·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; topical problems of oil and gas sphere</p> <p>·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; engineering and technology</p> <p>·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; research and methods of&nbsp;analysis</p> <p>·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; science to production</p> <p>·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; fields experience</p> <p>·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; certification, standardization, and quality</p> <p>·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; history of oil and gas science and technology</p> <p>&nbsp;The "Prospecting and Development of Oil and Gas Fields" Journal publishes review and research works that are dedicated to these subjects (but not limited only by them).</p> en-US (O. R. Kondrat) (vizd) Sat, 30 Jun 2018 00:00:00 +0300 OJS 60 Improving the efficiency of the automated control system of the oil transportation process based on the principles of intellectual technologies <p><em>The actual scientific and practical task, which consists in the analysis of existing and development of new methods and methods for assessing the technical condition of main oil pipelines, which will ensure safe automated management of the oil transportation system, is researched. It has been determined that in conditions of intensive aging of fixed assets of oil transportation systems and financial constraints, comprehensive technical diagnostics of main oil pipelines becomes the most effective means ensuring the reliability and safety of the entire oil transportation system. That is why the development of new and promising means of control and management on the basis of artificial intelligence is an actual scientific and practical task, the results of which identify the main scientific problems that require further research.</em></p> O. V. Kuchmystenko ##submission.copyrightStatement## Wed, 30 May 2018 00:00:00 +0300 The design of bottomhole assembly with two rock cutting tools for directional drilling <p><em>On the basis of the theoretical analysis and practical studies of hole drilling of large diameter, a method for designing the BHA with two rock cutting tools is proposed, taking into account the geological and technical factors that have an impact on the formation of the trajectory. The calculation of BHA with two rock cutting tools and a different number of supporting and centralizing components for different geological conditions of drilling is carried out and the analysis of their work in the process of drilling is conducted. The graphic dependences of the deviation intensity variation and the inclination angle with the sinking of borehole of the large diameter for the BHA that can be used for the drilling of vertical and directional wells.</em></p> I. V. Voievidko, V. V. Tokaruk, M. A. Bodzian ##submission.copyrightStatement## Thu, 17 May 2018 00:00:00 +0300 The development of method and software for assessing the technical condition of a metal production facility exemplified by the main pipeline <p>&nbsp;</p> <p><em>The analysis of the methods of acoustic control of the availability of nonuniformities in the wall of the metal pipeline is carried out. The basic mathematical equations describing the propagation and interaction of an acoustic wave with nonuniformity in an elastic medium are given. The method of calculation is presented and the results for the interaction of an acoustic wave with nonuniformity in the form of an ellipsoid are presented.</em></p> I. Z. Liutak, Z. P. Liutak ##submission.copyrightStatement## Fri, 18 May 2018 00:00:00 +0300 The pulsation study of rectified current of the three-phase rectifier bridge at not fully valve modes <p><em>The methodology of pulsations determination of the permanent current for the three-phase rectifier bridge&nbsp;&nbsp;</em><em>at not fully valve modes under the condition of continuous current of loading and symmetrical supply system is </em><em>proposed. The proposed methodology takes into account the influence of filters on the pulsations of the permanent current, in case they create actively-indicative character of loading. To the same extant the proposed methodology can be used for normal modes of operation of three-phase rectifier bridge under the above mentioned conditions.</em></p> M. Y. Oliinyk, N. H. Maltseva, M. B. Sabat, V. H. Fedyshyn ##submission.copyrightStatement## Thu, 26 Apr 2018 00:00:00 +0300 The choice of criteria for environmental risks management system during oil and gas wells construction <p><em>The article studies the conditions that may cause environmentally hazardous emergency situations in oil </em><em>and gas extraction industry. One of the most complicated emergencies is oil and gas leaks and open uncontrolled gushes. High degree of environmental risk typical of emergency situations like this needs measures to be taken in order to prevent them.</em></p> <p><em>In order to improve environmental risks management in oil industry, the manifold study of inner technological processes and the condition of equipment as well as outer manifestations has been conducted. The causes of oil and gas gushes at different stages of oil and gas well lifecycle phases&nbsp; have been analyzed. The factors that preceded oil and gas leaks and open gushes at 100 wells in different operating conditions have been given. The factors have been grouped in separate directions and the most powerful have been separated.&nbsp; The main types of environmental <br> hazard that accompany emergency oil and gas gushes have been defined. The criteria for controlling the environmental risks in order to prevent undesired consequences have been selected. The main constituents of those criteria are discussed and the possibilities of defining their numerical values. The proposed criteria make it possible to evaluate the threat adequately and to take certain proper measures in order to prevent emergency situations. </em></p> T. M. Yatsyshyn ##submission.copyrightStatement## Fri, 18 May 2018 00:00:00 +0300 The use of gamma-spectrometry and gamma-gamma-density logging for the study of reservoir rocks of complex structures <p><em>The results of the study of the </em><em>poroperm properties</em><em> of the </em><em>complex structure reservoir</em><em> rocks of the neogene <br> </em><em>deposits </em><em>at</em><em> the Letn</em><em>i</em><em>ansky</em><em>i</em><em> gas condensate </em><em>field</em><em> are considered. The petrophysical model for determining the bulk content of the main components of oil and gas reservoirs is given by data of gamma-gamma-density logging and spectrometric gamma-logging. The petrophysical model of the joint use of the results of gamma-spectrometry and gamma-gamma-density logging is shown.</em></p> <p><em>As a result of data analysis, it </em><em>has been</em><em> established that there is a close relationship between uranium content and bulk density. It should also be noted that there is a close relationship between the solid organic matter and the thorium content.</em></p> <p><em>It </em><em>has been</em><em> shown that </em><em>under</em><em> the conditions of complex </em><em>structure</em> <em>reservoirs</em><em>, the complex processing of data of </em><em>gamma spectrometry</em><em> and</em><em> gamma-gamma-density logging</em><em> allows quantitatively to determine </em><em>the following </em><em>parameters in complex </em><em>structures:</em><em>&nbsp; clayness, porosity, content of solid organic matter and rock density.</em></p> V. V. Fedoriv ##submission.copyrightStatement## Wed, 28 Mar 2018 00:00:00 +0300 The reliability increase of the electric drives for pumping units <p><em>Improving the quality and reliability of electrical machines is one of the most urgent problems of modern&nbsp;&nbsp;</em><em>electrical engineering. Practical data show that the increase of service life and reliability of machines gives better results than the improvement of other technical and economic indicators: efficiency, power factor, utilization factor. The quantitative indicators of reliability can be best determined by the results of statistical processing of the&nbsp;&nbsp;</em><em>information obtained when using the products.</em></p> <p><em>An algorithm of the load balancing based on the actual performance of pumping equipment and temporary changes in the connected load via the emergency shutdown of the pumps has been developed to improve the <br> </em><em>reliability operation and reduce inefficient energy losses. The main advantage of the proposed method is the&nbsp;&nbsp;</em><em>analytical design models of optimization, which does not require numerical methods and iterative procedures. </em></p> <p><em>Such principles as active-preventative service and increasing personal responsibility for its quality and&nbsp;&nbsp;</em><em>timeliness should be the basis for the organization of workposts service. </em></p> <p><em>Progressive forms of service are the technical re-equipment, modernization of equipment and improvement of production organization, as well as complex methods of the electric drive maintenance and application of the system of standardized tasks.</em></p> M. Y. Fedorіv, I. D. Halushchak, P. О. Kurliak ##submission.copyrightStatement## Tue, 05 Jun 2018 00:00:00 +0300 The improvement of the methodology for the calculation of the vortex tubes for gas conditioning <p><em>The process of temperature flow separation of gas in vortex tube is studied. The enhanced mathematical model of vortex tube has been proposed. With the help of various methods the conditions for the ejection event in vortex tube has been researched. The influence of several geometrical parameters on thermodynamic efficiency of vortex tube has been defined. Based on the proposed mathematical model, a new method of calculation the geometrical parameters (nozzle diameter, diaphragm diameter, sizes of conical valve) and the degree of flow, which are needed to obtain the requested cooling and heating effects depending on the available pressure ratio, has been developed.</em></p> O. R. Kondrat, A. D. Hutak ##submission.copyrightStatement## Sun, 22 Apr 2018 00:00:00 +0300 Modeling and identification of the main units of the thermal power plant (TPP) acting as automation objects <p><em>&nbsp;</em><em>On the basis of the analysis of the heat and power processes, the modeling and identification of the main units of the TPP has been carried out in order to increase the efficiency and reliability of the functioning of the automatic control systems of the inertial circuits of the TPP boiler units, which ensures the system’s reduction in sensitivity to uncertainties of the object itself, external perturbations, time delay variations along the control channels and disturbance, and thus guarantees the given quality of regulation in maneuverable modes of operation. The investigated transfer functions (model structure) are easily implemented by software and do not require additional control equipment, additional signal measurement channels or special sensors for their implementation.</em></p> M. V. Shavranskyi ##submission.copyrightStatement## Thu, 10 May 2018 00:00:00 +0300 Influence of the rate of the lawful injection of nitrogen into a depleted gas reservoir of circular shape on the residual gas recovery ratio <p><em>The use of nitrogen for the replacement of residual gas from depleted gas deposits is justified. The latest research and publications on the use of nitrogen to improve gas recovery from depleted gas deposits is analyzed. Using the licensed computer program CMG, the impact of the rate of nitrogen injection into the depleted gas reservoir on its indices for development (reservoir pressure, gas production, nitrogen content in the production gas, and gas recovery factor for the residual gas) has been studied.</em></p> R. M. Kondrat, L. I. Khaidarova ##submission.copyrightStatement## Tue, 15 May 2018 00:00:00 +0300 Decomposition algorithm and mathematical models of hierarchical structure of control of the process of primary oil processing <p><em>The article considers the development of deterministic and probabilistic models and control algorithm for the technological process of primary oil processing, as well as the solution of the problem of optimal control in the form of stochastic programming. To solve the problem of optimization of the researched technological system functioning by means of the Lagrange multiplier method, the decomposition algorithm and a method based on the transformation of the original problem on the principle of a deterministic analog have been developed.</em></p> <p><em>The principles of constructing an optimal control system based on the developed models, the optimization algorithm and the elements of automatic regulation of the regime parameters of the primary oil refining unit are proposed.</em></p> E. A. Melikov ##submission.copyrightStatement## Mon, 14 May 2018 00:00:00 +0300