bluuebunny/crossref_metadata_2025 huggingface dataset:
Hate Speech, Twitter and 2019 Election: Analysis of Tweeting Habits of Selected Politicians in Kaduna State
Authors: Hamidu Abdul
Published: November 2018

The study is assess the extent of hate speech among two major politicians in Kaduna State, Nigeria and its implication on the 2019 election in Nigeria.
The extensive Palaearctic distribution of Melitaea ornata Christoph, 1893 (Lepidoptera: Nymphalidae), exemplified by recent records
Authors: Russell Peter
Published: November 2018

Recent reports of Melitaea ornata Christoph, 1893 from countries within the Western Palaearctic region, for example from Spain, Bosnia Herzegovina and Asia, have considerably widened the previously accepted distribution of this species. Details of localities in more than twenty-five
countries, with references, are given. Those countries in which the presence of M. ornata has been reported but without any substantial evidence are noted.
Đầu tư khoa học cho các trường danh giá có hiệu quả hơn?
Authors: Ho Manh-Toan
Published: November 2018

Đầu tư khoa học hiệu quả có nhất thiết luôn phải gọi tên các ngôi trường danh giá? Một số kết quả nghiên cứu cho thấy thực tế không phải lúc nào các ngôi trường danh giá cũng mang lại hiệu quả đầu tư. Các quỹ tài trợ tại Việt Nam có thể tham khảo các nghiên cứu này để có chiến lược hợp lí.
Pengaruh Opini Audit dan Temuan Audit terhadap Pengungkapan Laporan Keuangan Pemerintah Daerah di Provinsi Kalimantan Timur
Authors: Habibi Muhammad
Published: November 2018

Dalam penelitian ini adalah mencoba menghubungan pengaruh opini audit dengan pengungkapan pada laporan keuangan. Oleh karena itu penulis dalam penelitian ini mencoba meneliti pengaruh opini audit tahun lalu terhadap pengungkapan laporan keuangan pemerintah daerah dan juga pengaruh opini audit pada tahun yang sama dengan pengungkapan laporan keuangan pada tahun tersebut.
GAMBARAN SUBJECTIVE WELL-BEING PADA PEREMPUAN DIFABEL
Authors: Muthmainah  , Situmorang Nina Zulida , Tentama Fatwa
Published: November 2018

Perempuan difabel adalah pihak yang memiliki kerentanan ganda dikarenakan kondisi disabilitasnya serta kerentanan mendapat diskriminasi karena dia seorang perempuan Hal diatas menjadi suatu rintangan dan hambatan bagi kaum difabel untuk melakukan aktifitas secara layak atau normal. Gangguan fisik yang dimiliki kaum difabel akan berdampak pada kepuasan hidup serta afek yang dirasakan individu selama hidupnya. Kualitas hidup seseorang dapat dilihat melalui subjective well-being (kesejahteraan subjektif). Subjective well-being merupakan evaluasi kognitif dan afektif seseorang tentang kehidupannya. Kajian ini bertujuan mengeksplorasi gambaran subjective well-being pada perempuan difabel dan faktor-faktor yang mempengaruhinya. Melihat kurangnya penelitian tentang subjective well-being pada perempuan difabel diharapkan kajian ini juga memberikan informasi pendukung tentang subjective well-being kepada pengelola kebijakan dalam membuat pengembangan potensi difabel serta membentuk lingkungan yang ramah difabel. Metode yang digunakan yakni kajian pustaka. Berdasarkan kajian tersebut ditemukan faktor-faktor yang mempengaruhi subjective well-being pada perempuan difabel adalah penerimaan diri individu, penerimaan orang lain, pengungkapan diri, penilaian diri, keyakinan diri, kepedulian lingkungan, dukungan sosial, hubungan sosial dan faktor demografi seperti usia dan lama waktu sekolah.
Do Microcredentials Help New Workers Enter the Market? Evidence from an Online Labor Platform
Authors: Kässi Otto , Lehdonvirta Vili
Published: November 2018

We investigate the effects of a voluntary microcredentialing scheme on an online freelancing labor market. Drawing on transaction-level data, we show that obtaining a microcredential increases workers’ earnings. This effect is not driven by increased worker productivity but by decreased employer uncertainty. The increase in worker earnings is realized through an increase in the value of the projects won rather than an increase in the number of projects. We also find that the effect of microcredentials is lower for more experienced workers, which suggests that signaling by microcredentials and other forms of verified information are partial substitutes.
Рівень пролактину у пацієнтів з ХХН V стадії, які лікуються гемодіалізом
Authors: Dudar I. , Savchuk V. , Loboda O. , Gonchar Y. , Shifris I. , Krot V.
Published: November 2018

Розповсюдженість гіперпролатинемії у пацієнтів, які лікуються гемодіалізом (ГД), становить 30-65%.

Метою нашої роботи було дослідити рівень пролактину (ПЛ) у пацієнтів з хронічною хворобою нирок (ХХН) V стадії, які лікуються ГД.

Матеріали та методи. Відкрите проспективне нерандомізоване дослідження за участю 43 пацієнтів з ХХН VД стадії, які лікуються гемодіалізом. Критеріями включення пацієнтів до дослідження були: інформована згода хворого прийняти участь у дослідженні, лікування ГД понад трьох місяців, Кt/V>1,2; судинний доступ АВ-фістула. Критеріями виключення були: відмова хворого від участі у дослідженні, цироз печінки, гострі гепатити В, С, гіпотиреоз, гострий коронарний синдром, гостре порушення мозкового кровообігу, вагітність, пацієнти з злоякісними новоутвореннями; ті хто, системно отримує такі медикаменти, як трициклічні антидепресанти, інгібітори моноамінооксидази, резерпін, метилдопу, похідні фенотіазину, протиблювотні препарати (зокреама метоклопрамід), інгібітори синтезу дофаміну, нейролептики. Всім хворим проводили визначення ПЛ в сироватці крові.

Результати. У хворих, які лікуються ГД констатовано підвищений рівень ПЛ у 32 (74%) пацієнтів. Рівень ПЛ сироватки крові у хворих, які лікуються ГД, був вищим порівняно з групою контролю: 47,17 ± 32,4 проти 11,76 ± 4,33нг/мл (р<0,001). Порушення місячного циклу склало 85% у групі жінок з підвищеним рівнем ПЛ проти 20% у жінок з нормальним рівнем ПЛ (р<0,05). У групах жінок та чоловіків з підвищеним рівнем ПЛ достовірно нижчий рівень Нb (р<0,05). Встановлено, що рівень ПЛ мав негативний кореляційний зв'язок з рівнем Нb(r=-0,36; p=0,02) та позитивний кореляційний звʼязок між рівнем ПЛ та СРБ (r=0,32; p=0,03).

Висновки. Розповсюдженість гіперпролактинемії в нашому дослідженні склала 74%. Порушення менструального циклу зустрічалося достовірно частіше у жінок з гіперпролактинемією (85% проти 20%). Підвищення концентрації ПЛ має негативний зв'язок з рівнем Нb та позитивний зв'язок з рівнем СРП, що дозволяє припускати причетність ПЛ до процесів хронічного запалення.
Вікові особливості оксидативного стресу у пацієнтів з пієлонефритом
Authors: Korol L.V. , Stepanova N.M. , Lavrenchuk O.V. , Migal L.Ya.
Published: November 2018

Метою нашої роботи було порівняти показники оксидативного стресу дітей та дорослих хворих на пієлонефрит.

Методи. Це дослідження зосереджено на вікових особливостях змін оксидантно-антиоксидантних параметрів та інтенсивності оксидативного стресу (ОС) у крові 252 дорослих та 123 дітей з пієлонефритом. Контрольну групу склали 68 здорових донорів одного віку та статі. Поряд із стандартними діагностичними методами визначали концентрації малонового діальдегіду у сироватці крові та еритроцитах, церулоплазміну, трансферину та SH-груп у сироватці крові, визначали активність глутатіонредуктази, глутатіонпероксидази та загальну активність пероксидази в еритроцитах, розраховували індекс ОС. Статистичний аналіз проводився за допомогою програм Statistica 10 для Windows та "MedCalc".

Результати дослідження підтвердили підвищення концентрації малонового діальдегіду і карбонільних груп білків у крові та зниження антиоксидантних маркерів, а саме: концентрації трансферину, різних фракцій тіолових груп, загальної пероксидазної активності в еритроцитах, активності глутатіонредуктази і глутатіонпероксидази. Збільшення активності окислення ліпідів та білків на тлі зниження показників антиоксидантного захисту характерне для пацієнтів з хронічним пієлонефритом. Найбільша інтенсивність ОС та концентрація церулоплазміну в сироватці спостерігалася у дорослих пацієнтів з гострим пієлонефритом. Найвища активність перекисного окислення ліпідів та низький рівень антиоксидантного захисту крові характерні для педіатричних пацієнтів.

Висновки. Таким чином, інтенсифікація ОС залежить від віку пацієнтів.
Diversity and Equity in Dietetics and Undergraduate Nutrition Education in Manitoba
Authors: Riediger Natalie D. , Kingson Oribim , Mudryj Adriana , Farquhar Kayla L. , Spence Kerry A. , Vagianos Kathy , Suh Miyoung
Published: November 2018

Purpose: The objectives of this study were (i) to describe ethnicity, tuition funding sources, and living arrangements during degree among Registered Dietitian (RD) and non-RD alumni of the University of Manitoba’s undergraduate nutrition program and (ii) to describe barriers to obtaining an internship among those who did not become an RD.

Methods: A 31-item, self-administered, online questionnaire was distributed to nutrition graduates. Binary logistic regression was used to test for predictors of RD status (vs. non-RD).

Results: Of the 195 participants who completed the survey (37% response rate), 68% identified as an RD and 31% did not. White students had 3.8 times higher odds of being an RD (P < 0.001) compared with students of an ethnic minority. Those who had received a student loan (P = 0.033) or lived with their parents during their degree (P = 0.004) also had significantly lower odds of being an RD. The most common barrier for not completing the dietetic internship by non-RDs was that the application process was too stressful.

Conclusions: Results from this study highlight the need for the dietetics field to address systemic barriers for students of ethnic minorities and low socioeconomic backgrounds, including barriers during the degree program and in the internship selection process.
PROSPECTS OF DEVELOPMENT OF THE INDUSTRY OF SHYMKENT AGGLOMERATION
Authors:   General Director of the Republic State Enterprise «Republic center of State Urban Planning and Cadastre», Doctor of technique sciences, Professor of the L.N. Gumilev Eurasian National University, Academician of the National Academy of Engineering of the Republic of Kazakhstan, the Honorable Builder, the Honoured Worker of Science of the Republic of Kazakhstan. Astana city, Kazakhstan. E-mail: ospan_ailina@inbox.ru, Mussabayev Turlybek Turkpenovich , Ilyasov Serik Sapargalievich ,   Chief Specialist of the Department of Settlement and Development of Productive Forces Office of Territorial Planning RSE "Gosgradkadastr" Astana, Kazakhstan, Zhambaybekov Daulet Kalenovich ,   Chief Specialist of the Department of Settlement and Development of Productive Forces Office of Territorial Planning RSE "Gosgradkadastr" Astana, Kazakhstan
Published: November 2018

The analysis of economic potential of Shymkent of agglomeration is conducted in the article, on the basis of that basic directions of development of region are educed. Taking into account present potential of current and perspective socio-economic terms priority directions of forming of economy of cluster type are certain in the field of pharmaceutics, oil processing, production of building materials, light industry, production of foodstuffs and metallurgy. Side by side with this, progress of investment zones trends are reflected as prospects.
CRIMINAL LEGAL POLICY OF THE REPUBLIC OF KAZAKHSTAN ON COMBATING TERRORISM
Authors:   Kyzylorda State University named after Korkyt Ata Speciality «Jurisprudence» 2-nd year students Kyzylorda city,the Republic of Kazakhstan. E-mail: diana_danilova2000@mail.ru, Danilova D. B. , Zhumasheva A. D. ,   Kyzylorda State University named after Korkyt Ata Speciality «Jurisprudence» 2-nd year students Kyzylorda city,the Republic of Kazakhstan. E-mail: azhumasheva0027@gmail.com, Zhumagulova Sholpan Rustemovna ,   Scientific supervisor. Kyzylorda State University named after Korkyt Ata Pulpit «Jurisprudence» senior teacher,Candidate of Law. E-mail: jumagulova_sholpan@mail.ru
Published: November 2018

They discussed the laws against terrorism. We consider a special comprehensive measures to no tolerance of terrorist threats and dangers. And also discussed the types and methods of terrorist threats and dangers. Social danger of these offences was proved.
DIFFERENTIAL DIAGNOSTICS OF GAS-TURBINE UNITSBY THEIR MAIN COMPONENTS
Authors: Perevoschikov S. I.
Published: November 2018

The dependences were obtained which enable to determine the values of the performance factors of gas- turbine units such as gas turbines and axial-flow compressors. The results of testing of the received relations applicability for practical calculations are presented. The test showed the dependences validity for real processes.
IMPROVEMENT OF THE CONDENSATE RECOVERY FACTOR BY USING THE CYCLING PROCESS TECHNOLOGY
Authors: Cheban S. E. , Mulyavin S. F.
Published: November 2018

The paper considers the cycling process as a method of gas condensate fields development by maintaining reservoir pressure through a reverse injection of gas into the productive horizon. The reservoir pressure maintenance impedes the liberation of high boiling hydrocarbons from the reservoir gas occurred due to retrograde condensation, which generate the gas condensate (which otherwise is practically lost). The experience of the cycling process realization proves its high technological and economic efficiency.
METHOD OF PARALLELIZATION OF NUMERICAL ALGORITHMOF NAVIER-STOKES EQUATIONS COMPLETE SYSTEM
Authors: Volkov R. E. , Obukhov A. G.
Published: November 2018

The article considers the features of numerical construction of solutions of the Navier-Stokes equations full system describing a three-dimensional flow of compressible viscous heat-conducting gas under the action of gravity and Coriolis forces. It is shown that accounting of dissipative properties of viscosity and thermal conductivity of the moving continuum, even with constant coefficients of viscosity and thermal conductivity, as well as the use of explicit difference scheme calculation imposes significant restrictions on numerical experiments aimed at studying the arising complex flows of gas or liquid. First of all, it is associated with a signifi- cant complication of the system of equations, the restrictions on the value of the calculated steps in space and time, increasing the total computation time. One of the options is proposed of algorithm parallelization of numerical solution of the complete Navier - Stokes equations system in the vertical spatial coordinate. This parallelization option can significantly increase the computing performance and reduce the overall time of counting. A comparison of the results of calculation of one of options of gas flow in the upward swirling flow obtained by serial and parallel programs is presented.
EXPLORATION AND PRODUCTION OF OIL AND GAS BASED ON THE GEOSOLITON MODELS AND TECHNOLOGIES
Authors: Bembel R. M. , Bembel M. R. , Sahipov D. M. , Schetinin I. A.
Published: November 2018

It is proposed on the basis of special technologies use to ensure a multiple reduction of exploration and development costs at significant increasing the production volumes. This is achieved by optimizing the placement of exploration and production wells in the immediate vicinity of the centers of geosoliton degassing of the Earth.
STUDY OF JURASSIC AND NEOCOMIAN AGE BARRIER TRAPS TO INCREASE THE PETROLEUM POTENTIAL OF THE YAMAL PENINSULA
Authors: Kislukhin I. V. , Kislukhin V. I.
Published: November 2018

In the article the geologic structure of the Jurassic and Neocomian age sedimentary cover in the Yamal Peninsula is considered. The regional unconformities of the north-east strike where the traps of barrier type are formed and the petroleum potential of which has been proved in Novoportovskoye, Rostovtelecoye and in a number of other fields have been mapped.
IMPROVEMENT OF THE TECHNIQUE AND TECHNOLOGYOF BEDS ISOLATION USING THE PROFILE EXPANDABLE CASING
Authors: Abdrakhmanov G. S. , Zalyatdinov A. A.
Published: November 2018

Drilling of oil and gas wells is a time consuming, very complex process in which there occur all sorts of complications. The most common one is drilling mud loss. During drilling of wells the control of this fluid loss problem takes about 12 % of total time. In this case, up to 60 % of materials and time is spent on isolation of fractured-cavernous beds with high fluid loss intensity which make up only 10 % of the total number of isolated zones. The use of liners with welded and threaded connections of shaped tubes enabled to completely solve the problem of lost circulation zones isolation regardless of their thickness, the borehole caving and the fluid loss intensity.
JUSTIFICATION OF CYCLICAL EFFECTS ON THE RESERVOIRS WITH HIGH VISCOSITY OIL
Authors: Kotenev Yu. A. , Zeigman Yu. V. , Mukhametshin V. Sh. , Ponomarev A. I. , Sultanov Sh. Kh. , Khafizov A. R. , Belyaeva A. S. , Kotenev A. Yu.
Published: November 2018

The article is devoted to numerical, laboratory and experimental substantiation of the cyclical impact on the productive formations with high-viscosity oil. On the basis of rheological and filtration studies examined the mobility of the oil, including its thixotropy properties. According to the results of numerical simulation determined the optimal half-cycles of water injection.
STUDY OF GRANULAR GELS PROPERTIES TO CONTROLTHE DEVELOPMENT OF OIL FIELDS
Authors: Ovchinnikova S. V. , Ali G. H.
Published: November 2018

Study of granular gels properties to control the development of oil fields. Ovchinnikova S. V., Ali G. H. The ultimate goal of this work was to develop a method to be used in mature oil fields aimed at plugging the highpermeability water flooded layers with further displacement of oil from the low-permeable interlayers and decreasing the water production. The experimental studies were carried out to assess the influence of different types of PPG gels (30 mesh and 40 mesh) on the injectivity of low permeable rock samples. In this study the permeability of the rock samples was measured before and after the gels injection. The injection of gels was run at different pressures and various concentrations of the brine. Additionally, the influence of the brine concentration on the gels swelling and strength was studied. The gel particle size is in the ranged from 30 to 80 mesh.
STUDY OF PROCESSES OF PRESSURE AND IMPULSE FREQUENCY INFLUENCE ON PENETRATION OF LIQUIDS IN THE SAND SAMPLES
Authors: Habibullin M. Ya. , Shangareyev R. R.
Published: November 2018

The article deals with the issues related to the hydrocarbon reservoirs oil recovery enhancement. It describes the bench laboratory experimental studies. The results obtained during determination of fluid leakage through the rock samples and the amount of absorption of pressure fluctuations at various regime parameters are presented. Using the experimental data the regression analysis was performed on the basis of which the qualitative correlations between factorial and resultant features were identified. Using the regression equations the graphic relations were constructed. It was found that with increasing the oscillation frequency of the fluid the amount of fluid passing through the sample of porous medium increased, with the highest value of q reached at the frequency range of 600 ... 1000 Hz. With increase in the oscillations penetration depth the absorption of the amplitude of the pressure fluctuations corresponds to the linear decrease, and with the overburden pressure increase the linear variation of absorption is distorted.
REPAIR OF OIL AND GAS WELLS ON MARITIME HYDROTECHNICAL FACILITIES
Authors: Vaganov Yu. V. , Kustyshev A. V. , Kuznetsov V. G. , Kulyabin G. A. , Semenov V. V. , Popova J. S.
Published: November 2018

In the article the methods of well workover realization within offshore hydro technical facilities are considered. The necessity of application of a compact, small-sized surface equipment allowing well work over without tubing strings ret rievalin conditions of limited technological space on an offshore platform is justified. Herewith, standard methods of technical well workovers with the help of wire line technique do not meet the necessary requirements because of complicated horizontal and directional wells profiles. On this base, the authors suggest the well work over realization with the use of coiled tubing technology adapted to offshore hydro technical facility conditions.
HYDROGEN BONDS AND INTERACTIONS IN DRILLING FLUIDS
Authors: Gaidarov M. M.-R. , Norov A. D. , Gaidarov A. M. , Hubbattov A. A. , Potapova I. A.
Published: November 2018

The article analyzes the intermolecular interactions in drilling fluids according to the conceptions of the supramolecular chemistry. Using the calculation method the values and the validity of orientation, induction and dispersion interactions in the formation of hydrogen bonds were obtained. It is shown that the interactions between the «nanoclay », multicharge, multifield and molecules of water lead to the formation of stable hydrogen bonds in the aqueous dispersion medium of the drilling fluid.
STOCHASTIC-ANALYTICAL MODEL OF PRODUCTIVE STRATA HYDRAULIC SYSTEM FOR STUDY OF CONDUCTIVITIES BETWEEN WELLS
Authors: Grachev S. I. , Strekalov A. V. , Khusainov A. T.
Published: November 2018

The factor that is the most determining for the accuracy of the hydraulic systems models and in particular the accuracy of the productive strata hydraulic system model (PSHS), is the accuracy of input data, i.e. the reservoir properties corresponding to the initial state of the PSHS elements, the formation cells; the approximation coefficients for the basic relationships; relative permeability curves; fluids and rocks deformation properties; boundary conditions, etc. Therefore, the quality of input data to a greater (in relation to the factors of calculation accuracy) extent determines the correspondence of the values of the estimated output data of the models to the actual measurement values, namely the dynamics of the injection, observation and production wells performance in which the recording of bottomhole pressure, flow rate and fluids composition of the fluids in wells varying with time is run.
DEVICE FOR DETERMINING LOAD ON DRILL BIT
Authors: Dolgushin V. V. , Zolotukhin I. S. , Kulyabin G. A. , Shamuradov F. A. , Grechin E. G. , Kuznetsov V. G.
Published: November 2018

The article outlines the materials of the researches, aimed at studying the loads, acting on the drill bit of cutting and shearing principle in the process of drilling rock sample at the stand. A placing scheme of the measuring equipment (strain gauges), based on the principle of independence of measurement of each of the parameters affecting the drill bit, is developed. As a result of the research is considered the possibility to calculate the point of impact and main force moment of system of forces, influencing the drill bit from the rock.
DEVELOPMENT AND RESEARCH OF THE WELL PLUGGINGMICROCEMENT-BASED COMPOSITION TO LIMIT AND ELIMINATE THE WATER INFLOWS INTO OIL AND GAS WELLS
Authors: Leontiev D. S. , Kleschenko I. I. , Kustyshev A. V. , Dolgushin V. A. , Zavatski M. D. , Ponomarev A. A.
Published: November 2018

The article discusses development of the backfill composition based on OTDV «Mikrodur». A method of mathematical planning of the experiment is described used to prove the optimal formulation of water isolation composition and the processing of the study results by application of the procedure of “full factorial experiment”. The results of the study by computer microtomography of the formed plugging stone are also presented.
FIRST PROJECTION OF THE EQUATION OF MOTION IN THE CYLINDRICAL COORDINATE SYSTEM
Authors: Obukhov A. G. , Volkov R. E.
Published: November 2018

It is proved that complex flows of the viscous compressible heat-conducting gas, arising during heating the vertical field, have a pronounced axial symmetry. Therefore, for the numerical solution of the full Navier-Stokes equations for description of such gas flows it are advisable to use a cylindrical coordinate system. This paper describes the transformation of the first projection of the equation of motion of the full Navier-Stokes equations system. The result of the transformation is a record of the first projection of the equation of a continuous medium motion in the cylindrical coordinate system.
PROMISING SITES FOR OIL AND GAS NADYM DEPRESSIONS
Authors: Safin R. I.
Published: November 2018

The paper describes the geological structure and oil and gas content in Nadym depression, which is almost entirely located over the oil-and-gas geological zoning in the oil and gas bearing area Yarudey of Frolovskaya petroleum bearing region. The generalization of the results of drilling, regional seismic exploration, core studies, well logging and well tests lead to identification of potential productive formations in the Jurassic-Cretaceous platform complex and in the Paleozoic basement. Some recommendations for further direction of exploration are proposed.
ANALYSIS OF WELL DESIGNS, THEIR SERVICE LIFE UNTIL FIRST REPAIRS FOR CASING STRINGS LEAK TIGHTNESS RESTORATION
Authors: Zalyatdinov A. A. , Huzina L. B.
Published: November 2018

This paper describes the issues of well cementing quality, service life and types of repairs for restoration of failed leak tightness of casing strings and cementing. The analysis run for more than 100 wells in the Fedorovskaya area, the field Romashkinskoye, provided the data comparing the quality of casing strings cementing by conventional methods and cementing of wells where a profile shutoff device was used.
OXIDATION OF OIL TAR IN THE PRESENCE OF THE ADDITIVE-INITIATOR
Authors: Grushova E. I. , Kuis O. V. , Pahomchik A. C. , Yusevich A. I.
Published: November 2018

The effect on the process of oxidation of the oil tar of initiating additive - ethyl benzene was studied. It is shown, that ethyl - benzene provides being oxidized petroleum product with additional active centers free radicals. This speeds up the oxidation process, and has a positive effect on the properties of the finish product bitumen.
EFFECT OF DENSITY OF FUELS ON THE OPERATIONAL AND ECOLOGICAL CHARACTERISTICS OF MOTOR VEHICLES
Authors: Magaril E. R. , Magaril R. Z.
Published: November 2018

Negative influence of the increased density of motor fuels on ecological and on operational characteristics of motor transport is proved. The complex of the technological solutions, aimed to decrease the density of the fuels, which are used, including a change of a ratio of capacities of oil processing, temperature range of boiling of gasoline and diesel fractions, introduction of additives into fuels and addition of butanes to gasolines is offered.
WATER PUMPING CONTROL FOR INCREASING OF FIELDS DEVELOPMENT EFFICIENCY, PROTECTION OF EARTH'S BOWELS AND ENVIRONMENT
Authors: Nurgaliev R. Z. , Guskova I. A. , Samoilov V. V. , Sitdikova I. P. , Gabdrakhmanov A. T.
Published: November 2018

In any complex system, in which the work is performed for the transformation and transmission losses and unproductive work are inevitably arise. The reservoir pressure maintenance system, the magnitude of these losses could be substantial, providing a great impact on the economy of the oil and gas companies. In this paper discusses certain incidents which are related to pipeline breaks, violation of construction of injection wells and other accidents.
THE METHODS OF JUSTIFICATION OF SELECTION OF EFFICIENT REAGENTS FOR THE DRILLING PROCESS FLUID
Authors: Ovchinnikov V. P. , Semenenko A. F. , Ovchinnikov P. V.
Published: November 2018

The method of reducing the number of ingredients in the composition of the solution was proposed. Cost reduction for preparation of drilling fluid was analyzed, improved conditions for the control and management of its parameters. The 12 most effective polymers were recommended to be implemented..The simplicity of the algorithm above process is not particularly difficult. Based on this, special software might be created for using in design institutes and educational institutions.
THE THIRD PROJECTION OF THE MOTION EQUATION IN THE CYLINDRICAL COORDINATE SYSTEM
Authors: Barannikova D. D. , Obukhov A. G.
Published: November 2018

Sophisticated viscous compressible heat-conducting gases arising during heating the vertical field, have a pronounced axial symmetry. Therefore, for the numerical solution of the full Navier-Stokes equations to describe such gas flows is advisable to use a cylindrical coordinate system. This paper describes the transformation of the third projection of the equation of motion of the full Navier-Stokes equations. The result of the transformation is to record the third projection of the equation of motion of a continuous medium in a cylindrical coordinate system.
MINING AND GEOLOGICAL SUBSTANTIATION FOR ENABLE THE CREATION OF GEODYNAMIC POLYGONS IN KALCHINSKOYE,UST-TEGUSSKOYE, TYAMKINSKOYE, UJNO-PETEGSKOYE, RADONEZHSCKOYE, PROTOZANOVSKOYE FIELDS
Authors: Vasiliev Yu. V.
Published: November 2018

The six hydrodynamic polygons were made for ensuring industrial security in Uvat group of fields: Kalchinskoye, Ust-Tegusskoye, Tyamkinskoye, Uuzhno-Petegskoye, Radonezhsckoye, Protozanovskoye. As part of mining and geological substantiation of necessity their of creation the analysis and interpretation of the specificity of the natural geological and tectonic situation and the development pressure on the bowels, a comparison of forecast estimates of the deformation process to the data obtained by instrumental geodetic measurements. Recommendations on optimization of geodynamic monitoring system are written.
PRODUCTION CONTROL OVER OBSERVANCE OF INDUSTRIAL SAFETY ATHAZARDOUS PRODUCTION FACILITIES
Authors: Vorobjeva S. V. , Kazantseva L. A. , Smirnova V. O.
Published: November 2018

The job of oil and gas companies of ensuring safe operation of hazardous facilities in general is carried out in accordance with applicable laws, rules and regulations. Sometimes major violations occur, therefore, for the purpose of improving the quality of the organization of production supervision this article proposes relevant activities.
SYSTEM ANALYSIS OF EQUIPMENT OF COMPRESSOR STATIONS ON MAIN GAS PIPELINES TO ESTABLISH THE PRIORITIES OF EFFICIENT USE OF ENERGY RESOURCES
Authors: Kolotilov Yu. V. , Kitaev S. V. , Darsalia N. M. , Smorodova O. V.
Published: November 2018

It is shown that it is possible to significantly improve the energy efficiency of compressor stations on gas pipelines in underloading conditions. Significant energy savings can be obtained through the use of optimization calculations of the design characteristics of the real gas pumping units and to implement such an urgent task it is necessary to develop a variety of mathematical models of system analysis with the possibility of their implementation in the design optimization of compressor station complexes.
DEVELOPMENT OF THE METHODOLOGY OF 3D GEOLOGICAL MODELING FOR THE RESERVOIRS OF THE PALEOZOIC BASEMENT OF WEST SIBERIA
Authors: Tseplyaeva A. I.
Published: November 2018

The represented method allows to create three-dimensional geological models of collectors of paleozoic basement, which provides a significant economic effect in the subsequent deposit explorations for typical russian companies - subsoil users, having a limited amount of data. In geological modeling of the collectors of paleozoic basement, the application of the method of dual porosity (double medium) is most relevant. The created approach allows to refine the geological model with an increase of geological reserves by 30 % in reservoirs with natural fracturing.
DEVELOPMENT OF ANALYTICAL APPROACHES FOR DETERMINATION OF STORAGE CAPACITY OF RELIEF GAS PIPELINE TAKINGINTO ACCOUNT INERTIA FORCE
Authors: Yurkov N. K. , Shtykov R. A.
Published: November 2018

New analytic formulas were obtained for storage capacity of the elementary section of the gas pipeline, taking into account the inertia of gas and linear change of leveling height of pipeline route. On their basis numerical simulation and analysis of change of this indicator in length at various static conditions of functioning of the gas pipeline were conducted.
ANALYSIS OF QUALITY OF PERFORATION OF PRODUCTION FORMATIONS BY WELLS WITH HORIZONTAL COMPLETION
Authors: Kuznetsov V. G.
Published: November 2018

The paper presents correlation-regression analysis of the influence of various factors on the oil production rate of wells with horizontal completion. Attempt was taken to create a model of multiple correlation for explaining the combined effect of these factors on production rate. The model allows both predicting with sufficient accuracy rate the production rate of the well based on drilling and completion data with a sufficiently high proportion of accuracy, and ranking various factors according to the degree of their influence on production rate.
ASSESSMENT OF INFLUENCE OF CEMENT CASING CONDITION ON THE TEMPERATURE OF PRODUCTS OF EXTRACTION WELL
Authors: Nikulin V. Yu. , Zeigman Yu. V.
Published: November 2018

In this paper the influence of condition the cement stone behind the casing on the temperature of extracted well production was considered. The calculations to assess the additional heat losses were performed. Analysis showed that in primary recovery fountain well the negative effect on the product temperature is at maximum. A practical application of the obtained resultswas suggested.
EQUIATION OF ENERGY WITH ALLOWANCE OF EFFECTS OF DISSIPATION IN CYLINDRYCAL COORDINATE SYSTEM
Authors: Nesterovich N. V. , Obukhov A. G.
Published: November 2018

Complex flows of a viscous compressible heat-conducting gas in ascending swirling flows have a pro-nounced axial symmetry. Therefore, for the numerical solution of the complete system of Navier - Stokes equations to describe such gas flows, it is desirable to use a cylindrical coordinate system. The paper describes the transformation of the energy equation for a complete system of Navier - Stokes equations with allowance for the dissipative properties of a moving continuous medium. The result of the transformation is the formulation of the energy equation in a cylindrical coordinate system.
EXTRACTING OIL FROM THE SLUDGE MICROMETALLIC MINIMIZING THE IMPACT OF HEAVY METALSON THE ENVIRONMENTAL OBJECTS
Authors: Dvoinikova A. V. , Gicaev A. A.
Published: November 2018

Processing and utilization of oil reservoir type is an important environmental and economic problem [2]. Currently in the oil pits in various oil refining enterprises have accumulated hundreds of millions of tons of toxic sludge. This situation poses a real threat to the biological system of the Earth, as crude oil is polymer recycling, which after processing leaves degradation products unknown to science.
KEROGEN TYPES OF BAZHENOV FORMATION BASED ON PYROLYSIS DATA AND THEIR COMPARISON WITH OIL PARAMETERS
Authors: Oksenoyd E. E. , Volkov V. A. , Oleynik E. V. , Myasnikova G. P.
Published: November 2018

Based on pyrolytic data (3 995 samples from 208 wells) organic matter types of Bazhenov Formation are identified in the central part of Western Siberian basin. Zones of kerogen types I, II, III and mixed I-II and II-III are mapped. Content of sulfur, paraffins, resins and asphaltenes, viscosity, density, temperature and gas content in oils from Upper Jurassic and Lower Cretaceous sediments (3 806 oil pools) are mapped. Oil gradations are identified and distributed. The alternative model of zones of kerogen II and IIS types is presented. The established distributions of organic matter types can be used in basin modeling and in assessment of oil-and-gas bearing prospects.
WELL LOG DATA INTERPRETATION PROBLEMS IN WELL, DRILLED USING POLYMER-CLAY-BASED DRILLING MUD
Authors: Stroyanetskaya G. E. , Malykh E. A.
Published: November 2018

There was shown the low efficiency of standard well logging sequence for reservoirs identification and de-fining their saturation in the well, penetrating on polymer-clay-based drilling mud the section with high salinity of formation water. At low resistances of formations the reliable results of testing as for large volume reservoirs as well as for small volume reservoirs are needed for establishing the critical values of indications of induction method and electrical measurements against the permeable formations of different thickness. To distinguish the reservoirs it is necessary to obtain the core samples and to analyze them to establish the compliance of indications between geophysical measurements and reservoir characteristics.
PROBLEMS OF MEASURING OF MOTION PARAMETERS OF THE DRILL STRING
Authors: Kuznetsov V. A. , Mikheew S. A.
Published: November 2018

The current methods of measuring of parameters of the movement of the drill string are reviewed. The as-sessment of these methods from the point of view of metrology and the effectiveness of the application of measuring equipment is given. There are presented the block diagrams of devices for measuring the parameters of movement of the drill string on the angle of rotation of the drill winch drum with automatic correction of measurement errors arising due to changes in the radius of cable winding on winch drum, when winding from one layer to another. Diagrams of mechanical and electrical devices for automatic correction of measurement errors are presented.
TECHNOLOGY OF REDUCTION OF SAND PRODUCTION IN OIL WELLS
Authors: Leontiev D. S. , Kleshchenko I. I. , Cedric N. S.
Published: November 2018

The article presents the main causes of water and sand production in oil wells, the consequences of forma-tion of sand plugs and also the methods of prevention of this type of problem. The authors developed the method of reduction of sand production in oil wells. The distinguishing feature of developed method from known ones is the creation of sand filter directly inside the oil well. For effective selection of proppants as applied to geological and physical conditions of wells the authors developed a software «Proppants», which is a database on physical and mechanical and filtration properties of proppants.
GAS PRODUCTION FROM THE HYDRATE RESERVOIR AT NEGATIVE TEMPERATURES
Authors: Musakaev N. G. , Borodin S. L.
Published: November 2018

The mathematical model of the process of gas hydrate decomposition information to gas and ice is pro-posed. This model takes into account the non-isothermal filtration flow of gas, the adiabatic cooling effect, real gas properties, and Joule-Thomson effect. The influence of bottom hole pressure, permeability of a porous medium, and hydrate saturation on the rate of gas production from the reservoir initially saturated with methane and its hydrate was analyzed.
ANALYSIS OF TRENDS OF OIL AND GAS INDUSTRY DEVELOPMENT IN RUSSIA
Authors: Solodovnikov A. V. , Makhneva A. N.
Published: November 2018

The trends of the basic indicators of oil and gas production and export in Russia based on the statistical data were analyzed. The chain and basic absolute increments, growth rates and increments were identified. On the basis of general indicators of the dynamics of development of the oil and gas industry the average characteristics were determined. The perspective of development of oil and gas industry in the country was estimated.
OPTIONS OF PULSE NON-STATIONARY WATER FLOODING IN BLOCK SYSTEMS OF DEVELOPMENT
Authors: Habibullin M. Ya. , Suleymanov R. I. , Zaynagalina L. Z. , Petrov V. A.
Published: November 2018

In the block systems of water flooding the features of relative location of injection and production wells allow for the variety of options for changing the mode of operation (single, group, block, etc.). The greatest overall effect of the change in filtration velocity at the cutting line, and hence also the effect of pulsed non-stationary flooding, is achieved by alternate stopping of wells. The maximum distance between the injection wells, the mode of operation of which can be changed at the same time, is limited by the duration of the stop and subsequent water injection. Thus, if the duration of half cycles is the same, then this ratio is equal to two, that is the wells in a row should be stopped through one row.
SYSTEMATIC TREATMENT OF OIL RESERVOIRS AS AN OIL RECOVERY INCREASING METHOD
Authors: Tokareva N. M. , Zeigman Yu. V. , Tokarev M. A.
Published: November 2018

The article reviews features of the technology of systematic influence on oil reservoirs with the purpose of oil recovery increasing at the late stages of development. It describes some methods of oil recovery increasing. These include massive drilling of lateral wellbores, treatment of clayed reservoirs with a composition patented by the authors, as well as the opening of formations with a hydromechanical slotted perforator, patented by the authors.
PRIDICTION OF THE PRODUCTIVITY OF HYDRAULIC FRACTURED VERTICAL WELL WITH FINITE CONDUCTIVITY FRACTURE
Authors: Faiq S. A.
Published: November 2018

A new general analytical technique for the pseudo-steady state for vertical finite fracture conductivities in rectangular formations (with different length-to-width relationships, 1 ≤ λ ≤ 5) is presented. The pseudo-skin function and the inverse effective radius of the trunk wells for a vertical crack of uniform and constant conductivity in the center of a square area are determined. The method is based on fundamental principles, and the solution is mathematical and easy to take.
DIAGNOSTICS OF TECHNICAL CONDITION OF GAS-TURBINE UNITS ON PARAMETRIC DATA
Authors: Perevoschikov S. I.
Published: November 2018

Two methods for diagnosing the technical state of gas-turbine units on the same parameter (effective power), based on various physical principles, are given. One of the methods is derived from kinematics of the flow of combustion products in power turbines of units, the other method is derived from the consideration of ther-modynamic processes in these turbines. Practically the same diagnostic results obtained on different physics testify the adequacy of both methods and the possibility of using them to assess the technical state of gas-turbine units.
THE GAS CONDENSATE AS THE SOURCE OF DIESEL FUEL
Authors: Glazunov A. M. , Mozyrev A. G. , Gurov Yu. P. , Zaporozhan D. V.
Published: November 2018

The article deals with studies diesel fuel from the remainder of gas condensate by using the adsorption method.
NUMERICAL CALCULATIONS OF ENERGY CHARACTERISTICS FOR SIMULATION THE STEADY-STATE OUTPUT OF AN ARTIFICIAL TORNADO
Authors: Volkov R. E. , Obukhov A. G. , Terekhova N. V.
Published: November 2018

The article deals with the results of numerical experiments simulating various ways of reaching the steadystate regime of an ascending swirling air flow in an artificially created tornado. The values of the total kinetic energy and kinetic energy of the rotational motion of the flow are calculated, and the functional dependences of its energy characteristics on time are found. In addition, the acceleration time is determined for various methods of outputting a swirling flow to a stationary mode of operation.
WATERFLOOD-INDUCED FRACTURE ON THE INJECTION WELLS IN LOW-PERMEABILITY RESERVOIR OF ACHIMOV SEQUENCE
Authors: Klimov-Kayanidi A. V. , Alimkhanov R. T. , Agureeva E. S. , Sabitov R. M.
Published: November 2018

Achimov sequence is characterized by high heterogeneity and low reservoir properties, that makes it impossible economically profitable field development without hydraulic fracturing and usage reservoir pressure maintenance systems. The research aims to develop recommendations for regulating the operations of injection wells, in conditions of waterflood-induced fracture formation. The recommendations can be used to further regulate the waterflooding system for the conditions of Achimov sequence.
RESERVOIR PRESSURE MAINTENANCE BY WATER INJECTION INTO HORIZONTAL WELLS AT THE CONDITION OF THE GEOLOGICAL UNCERTAINTY IN CONTINENTAL DEPOSITS OF HIGH-VISCOSITYOIL OF PK1-3 FORMATION OF THE VOSTOCHNO-MESSOYAKHSKOYE OIL FIELD
Authors: Kovalenko I. V. , Sokhoshko S. K. , Pleshanov N. N.
Published: November 2018

The article considers the problem of correct organization of the system of reservoir pressure maintenance by water injection into PK1-3 formation of the Vostochno-Messoyakhskoye oil field that has many geological uncertainties. To remove these uncertainties the authors offered the pilot well program of flooding system and detailed proposals for data diagnosis obtained during this program that will help to determine the most correct approach to the flooding system for this type of reservoirs.
REASONING AND DEVELOPMENT OF TECHNOLOGY FOR BUILDING A WATER SHUT-OFF SCREEN IN OIL WELL
Authors: Leontiev D. S. , Kleshchenko I. I. , Bakin D. A.
Published: November 2018

The article presents a technology for building a water-shut screen in an oil well. The technology is based on drilling of radial channels within the water-encroached formation and following injection of water insulation composition in these channels. The proposed technology provides a durable screen of increased diameter and width. It contributes to a longer period of low watercut production in an oil well.
DOWNHOLE UNIVERSAL DEVICE FOR PULSEDSTATIONARY PUMPING OF FLUIDS INTO THE WELL
Authors: Habibullin M. Ya. , Suleymanov R. I. , Galimullin M. L. , Sidorkin D. I.
Published: November 2018

The article deals with a downhole universal device for pulsed stationary pumping of fluids into the well. The versatility of this device is concluded in the ability to create a high-frequency vibra-tions in case of an injection well injectivity decline due to use of an additional element. On the basis of mathematical expressions and taking into account the simulation the authors determine the main parameters of the device. In developed laboratory bench tests experimental design was carried out taking into account the modeling of downhole conditions. When comparing the theoretical and laboratory results, the error was no more than ± 11,7 %. According to the results of bench tests the optimal size of the device for effective action at a pulsed stationary pumping of fluids into the well was determined.
THERMODYNAMIC CHARACTERISTICS OF SWIRLING GAS FLOWS IN SIMULATION OF THEIR OUTPUT TO THE STATIONARY MODE
Authors: Abdubakova L. V. , Volkov R. E. , Sorokina E. M. , Obukhov A. G.
Published: November 2018

The method of parallelizing a numerical solution of the complete system of Navier - Stokes equations is used to describe three-dimensional unsteady flows of a viscous compressible heat-conducting gas in ascending swirling flows. In this case, the action of gravity and Coriolis forces is taken into account, the coefficients of viscosity and thermal conductivity are assumed to be constant. The results of numerical calculations of the thermodynamic characteristics of flows on smaller computational grids are presented in simulation of the output to the stationary mode of an ascending swirling air flow in an artificially created tornado. We numerically determined the values of density, temperature, and pressure for various fixed times and for different heights of the calculated region. The research shows that in the process of accelerating the gas flow in the center of vertical region a funnel-shaped region with reduced values of density, temperature, and pressure is observed.
ANALYSIS OF THE TRACER STUDIES RESULTS: A STUDY OF AS1-3 FORMATION OF THE SEVERO-OREKHOVSKOYE OIL FIELD
Authors: Dyagilev V. F. , Polischuk S. T. , Leontev S. A. , Spasibov V. M.
Published: November 2018

In oil field practice tracer (indicator) studies are an effective and efficient method of monitoring the state of field development. Using the multifactor mathematical analysis, the nature and intensity of the impact of injection wells on production wells have been compared with the results of injection of indicator liquids. Injection of indicator liquids was carried out along the AS1-3 formation at the Severo-Orekhovskoye oil field through the wellheads of the injection wells. The technique provides for correlation of injection in all potentially possible directions within a given range of action (usually no more than 2 rows), excluding one or more of the wells and more from the analysis. There is a direct positive correlation between evaluation data on indicator downloads and multivariate mathematical analysis data. The convergence of the results is 65%.