JOURNAL OF HYDROCARBON POWER ENGINEERING 2020-03-27T10:14:51+02:00 Mykhailo Myslyuk Open Journal Systems <p>111</p> Experimental investigation of the near-bit jet pump 2020-03-27T10:02:16+02:00 Ye. I. Kryzhanivskyi D. O. Panevnyk <p>The nature of the flow distribution in the hydraulic system of the near-bit jet pump has been analyzed. The peculiarities of searching the pumping station operating point have been shown and the equation for determining hydraulic losses in the elements of the ejection system has been given. Based on experimental studies, an error in the theoretical determination of the relative pressure of a jet pump has been established when using a known and advanced model of its working process. In contrast to the known method, the proposed model provides for the determination of the hydraulic resistance of the chisel flushing system,<br>which is located in the area of mixed flow at the cost of working, not mixed flow. Improving the mathematical model of the ejection system allows to reduce the error of theoretical determination of the relative pressure of the jet pump.</p> 2019-12-27T00:00:00+02:00 Copyright (c) 2019 Roman Bishchak (Journal manager) Hydrophobization method and "Ramksis-2" material for the flow rate in crease in the watered oil wells 2020-03-27T10:03:53+02:00 V. N. Babaev I. I. Kaptsov O. I. Nalyvaiko <p>In the article there is made an attempt to investigate the most effective methods of petrofeedback increasing and wells productivity in the conditions of Ukrainian oil and gas fields. Traditional methods petrofeedback increasing and new approaches of solving this problem, such as hydrophobization layer zones or the use of water-swellable polymers are also considered.<br>Particular attention is given to the processing of studies of cores of flooded wells to determine the coefficient of permeability recovery after injection of hydrophobic suspension "Ramsinks-2". The material significantly increases the injectivity of the well, reduces the injection pressure by improving permeability of the formation. It is shown that the use of hydrophobic materials "Ramsinks-2" and "Silpan-SV" in wells allows almost completely restore the filtration characteristics of the producing formation by increasing the oil component in the oil-water mixture.</p> 2019-12-30T00:00:00+02:00 Copyright (c) 2019 Roman Bishchak (Journal manager) Remote monitoring of gas pipelines on the basis of magnetic elastic sensors of mechanical voltage 2020-03-27T10:05:58+02:00 V. V. Tsyganchuk L. S. Shlapak O. M. Matviienkiv P. Ya. Sydor <p>A method of controlling the stress state of gas pipelines with a four-pole magnetoanisotropic converter has been suggested. The Arduino hardware and software platform has been used to enhance the capabilities of the INI-1C basic mechanical stress measuring device. The system of remote monitoring for periodic measurements of pipeline voltages, accumulation and analysis of the received data has been described in order to provide objective information for making technological decisions.</p> 2019-12-30T00:00:00+02:00 Copyright (c) 2019 Roman Bishchak (Journal manager) Research of pressure influence in the gas supply system on the energy consuption level of gas devices 2020-03-27T10:11:40+02:00 L. D. Pylypiv І. І. Maslanych <p>There are investigated the influence of operating pressures in the gas supply system on the level of such energy indicators as efficiency, gas flow and gas overrun by gas equipment in residential buildings. There is established a relationship between the values of operating pressures in the gas supply system and the gas consumption level of household appliances. The causes of insufficient pressure in the gas networks of settlements are analyzed in the article. There is also developed an algorithm for calculating the change in the efficiency of gas appliances depending on the operational parameters of the gas network. It has been found that the most efficient operation of gas appliances is observed at an overpressure at the inlet of gas appliances of about 1200 Pa.<br>To ensure the required quality of natural gas combustion among consumers and minimize gas consumption there are justified the following measures in the article: coordinating a domestic regulatory framework for assessing the quality of natural gas with international norms and standards; improving the preparation of gas coming from local wells before supplying it to gas distribution networks; auditing low pressure gas pipelines and reconstructing areas affected by corrosion; ensuring standard gas pressure in the network for the normal operation of domestic gas appliances; stating quality indicators of natural gas combustion by gas sales organizations.</p> 2019-12-27T00:00:00+02:00 Copyright (c) 2019 Roman Bishchak (Journal manager) Study of the effect of synthesized high voltage electric charge of a powder mixture on the physical and mechanical properties of epoxy composites for the transport industry 2020-03-27T10:14:51+02:00 А.V. Buketov O.М. Syzonenko О.М. Bezbakh A.S. Torpakov Ye.V. Lypian <p>For the formation of composite materials and protective coatings for the transport industry, ED-20 epoxy yanoic oligomer, the polyethylene polyamine PEPA and microfine fractions of high-voltage synthesized powder charge were used. The dependence of the content of microdispersed powder on the adhesive, physical and mechanical properties, and residual stresses of epoxy composites has been investigated. It has been proved that for the formation of a composite material or protective coating with improved adhesive and cohesive properties, the optimal particle content is 0.05–0.50 parts by weight per 100 parts by weight of the ED-20 epoxy oligomer. Such materials are characterized by increased mechanical strength and the ability to resist static and dynamic loads, since their properties are significantly increased compared with the matrix. The obtained results of experimental studies of physical and mechanical properties of composite materials are consistent with the test results of samples with adhesive characteristics, indicating their reliability.</p> 2019-12-30T00:00:00+02:00 Copyright (c) 2019 Roman Bishchak (Journal manager)