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Investigation of Glass Transition Process in Narrow Oil Fractions in a Wide Temperature Range Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2021-01-23 V. G. Kucherov
The results of a study of the phase behavior of six narrow oil fractions in the 150-350 K temperature range at atmospheric pressure using scanning calorimetry are presented. It is shown that there is a correlation between glass transition of the studied oil fractions and their mean boiloff temperature, molecular mass, and initial oil viscosity.
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State and Prospects of Maleic Anhydride Production Growth in Russia Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2021-01-22 D. Yu. Tremaskin, F. G. Zhagfarov
The maleic anhydride market in Russia is analyzed. An assessment is made of the existing maleic anhydride production technologies and the optimal technology is proposed. The scheme with a fixed catalyst bed is selected. Possible problems arising at all construction and production stages are identified and ways of solving them are proposed.
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Increasing the Efficiency and Selectivity of Separation of Components in Chromatographic Analysis of Natural Gas Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2021-01-22 K.M. Mazurova, M.S. Tyutlikova, E.A. Chudin, A.V. Domovenko, A.A. Makarov, A.L. Pakhomov, V.A. Vinokurov
The composition of natural gas plays an important role in gas processing and transportation, and the main method for determination of the composition of natural gas is gas chromatography. In gas chromatography the efficiency of separation and the selectivity are the main characteristics of the analytical process. In this work the influence of the type of packed column on separation efficiency and selectivity
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Comparative Analysis of Transformations of Heavy Oil Feedstock Model Components under Cracking Conditions in the presence of Metaland Acid Catalysts Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2021-01-21 N. M. Maximov, A. A. Zurnina, I. S. Dokuchaev, P. S. Solmanov, Yu. V. Eremina, E. O. Zhilkina, V. B. Koptenarmusov, A. A. Pimerzin
The roles of a metal catalyst and hydrogen donors in thermal cracking were studied. The results were compared with those for a typical acid-type cracking catalyst (EMKAT). The role of the metal catalyst in thermal cracking was shown too consist of hydrogen-transfer reactions in mainly non-ionic forms. The ease of dehydrogenation of the hydrogen donor determined the degree of suppression of the cracking
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The Relationship between CO 2 Adsorption and Microporous Volume in a Porous Carbon Material Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2021-01-21 Yongjie Wei, Junchao Wang, Chen Gu, Zhengfei Ma
In this work, we have characterized four types of porous carbon material by N2 adsorption at 77 K and CO2 adsorption at the freezing point. The results show that both the BET equation based on the N2 adsorption isotherm and the D-A model parameters obtained from the CO2 adsorption isotherm are not applicable for analyzing the CO2 adsorption characteristics in porous carbon materials. The density functional
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Analysis of COVID-19 Impact on Natural Gas Supply Reliability Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2021-01-21 Yichen Li, Weichao Yu, Zihui Han, Shuang Shi, Weihe Huang, Kai Wen, Jing Gong
In this study, we have analyzed the impact of COVID-19 on natural gas supply reliability. Natural gas supply reliability is defined as the ability to satisfy the market demand and is determined by both supply-side and demand-side policy. To evaluate the gas supply reliability of the natural gas pipeline system, we have applied the method of gas supply capacity calculation based on the results of the
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Simulation Study of Hydrocarbon Generation Characteristics in Siliceous Rock Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2021-01-21 Guohui Qu, Ning Liu, Yikun Liu, Yuanlin Meng, Zilu Zhang, Weizhong He
Late Triassic-early Jurassic silica rocks are widely developed in Northeast China. To evaluate the silica rock hydrocarbon generating capacity, we have simulated the hydrocarbon evolution process by thermal simulation experiments and analyzed the hydrocarbon generation characteristics. The experiments were carried out at six temperature points 250, 270, 290, 310, 330, and 350°C, and the content of
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Measurement of CBM Bubble Parameters by Double-Sensor Conductivity Probe Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2021-01-21 Xuming Zhu, Yuliang Zou, Xiaoming Wu, Ziwei Jiang
Since the current commonly used bubble detection method cannot meet the requirements of real-time bubble detection in terms of the detection target and volume, this paper proposes a method of real-time detection of coal-bed methane (CBM) bubble parameters in a borehole with a double-sensor conductivity probe and designs the corresponding test device. The ellipsoid correction algorithm was adopted for
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A New Prediction Model of Water Breakthrough Time of Horizontal Well in Inclined Edge-Water Low Permeability Gas Reservoir Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2021-01-21 Feng Liu, Fei Yang, Yi Zhang, Xiong Liu, Bo Sun
At present, the existing water breakthrough time models in edge-water gas reservoirs are mainly based on the vertical well scheme and ignore the impact of the formation dip angle and non-Darcy flow effect, thus resulting in some differences between the predicted and actual measured data. To improve the accuracy of prediction, we have considered the effect of gravity caused by the dip angle in the edge-water
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Experimental Study of Anisotropic Characteristics of a Specific Formation Shale Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2021-01-21 Gao Dewei, Huang Honglin, Li Jun, Sun Tengfei
The bedding surfaces of shale in the Longmaxi formation are well developed. To study the influence of bedding surfaces on the mechanical properties of shale, we have carried out uniaxial and triaxial compression tests on shale specimens of Longmaxi formation in Southern Sichuan, China. The results shows that when the samples are subjected to compression, the properties of shale, including strength
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Calculating Model of Frictional Pressure Drop for Gas Well During Foam Drainage Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2021-01-21 Bai Xiaohong, Cheng Yang, Yao Jian, Luo Wei, Wang Xiaorong
In the process of enhanced of development of gas wells, the liquid loading may cause obstacles for the affective production of the gas wells. Gas-foam drainage technology has the advantage of low cost and simple operation. The design of the drainage technology requires providing a reliable formula to evaluate the friction coefficient of foam in the tube. In this paper, we have applied a theoretical
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Formation of Requirements Pertaining to the Operational Properties of Fuels and Lubricants at the Development Stage Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-11-20 S. N. Volgin
The described method for the formulation of requirements for the operational properties of fuels and lubricants on the basis of point- and integral indicators obtained from the results of laboratory bench tests promotes an increase in the efficiency and reliability of quality assessment while reducing material costs.
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Study of Sedimentation in Jet Fuels Due to Watering Using Methods of Molecular Mechanics Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-11-20 A. V. Oreshenkov
Research results on the formation and structuring of disperse jet fuel systems of fuel TS-1 in contact with icing inhibition liquids and without them with water and the formation of an aggregated disperse phase, which is one of the causes of fuel system failures of aircraft, are presented.
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Research on the Fluid Flow Characteristics in the Process of Pump Closing in Cementing Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-11-19 Shuangjin Zheng, Tao Liu, Dongnan Du, Yu Liu, Yi Pan
An instantaneous change of displacement during the cementing pump closing in the process of cementing in formations with a narrow density window may cause flow and pressure fluctuations and affect the wellbore safety and annulus pressure stability. Therefore, it is important to study the wellbore fluid flow characteristics in the process of cementing pump closing. In this paper, the authors have established
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Development and Dynamic Analysis of a Torsional Vibration Damping Tool for PDC Bit Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-11-18 Chunqing Zha, Zhiwei Dong, Lixin Zhu, Jie Chen, Yan Xi
It is generally recognized that the stick-slip motion of a polycrystalline diamond compact (PDC) bit is responsible for the low rate of penetration (ROP) and premature failure of the PDC bit when drilling in hard rock formations. To solve this problem, a torsional vibration damping tool was developed. A working principle model of the tool and a calculation model of the optimal spiral angle of the tool
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A Method of Simulation Modeling of Chemmotological Processes for Determining and Predicting Performance Properties of Fuels and Lubricants Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-11-18 Yu. M. Pimenov, A. V. Ulit’ko, B. A. Sereda
This paper presents a chemmotological process modeling method which, based on the results of fuels and lubricants (FL) tests on physical models of FL using objects, enables computer construction of mathematical and simulation models of the processes and use of them for evaluating and predicting the performance properties of FL’s with due regard for the probability characteristics (distribution laws)
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Application of Experiment Planning for Optimization of Test Conditions When Evaluating Anti-Wear Properties of Aviation Kerosene Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-11-18 D. A. Man’shev, V. V. Kondratenko, V. V. Suzikov, I. M. Nikitin
The use of mathematical experiment planning is proposed to optimize test conditions providing the maximum resolution of the method for assessing the anti-wear properties of aviation kerosene. The absolute difference between the values of the determined indicator “wear-track width” for fuels with different levels of anti-wear properties is selected as the optimization criterion.
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Correction to: Structural Features of CO 2 -Asphaltene Particles Precipitated from Vacuum Residue Using Various Organic Diluents Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-11-17 R. N. Magomedov, A. V. Pripakhailo, D. I Panyukova, L. S. Foteeva, T.A. Maryutina
To the article “Structural Features of Particles of Goudron CO2 Asphaltenes Precipitated with Various Organic Diluents,” by R. N. Magomedov, A. V. Pripakhailo, D. I Panyukova, L. S. Foteeva, and T.A. Maryutina, Vol. 56, No.3, pp. 325-332, July, 2020
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Influence of Gas Solubility on Zero Gas Flow Characteristics in MPD Operation Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-11-17 Weiwei Teng, Jiangang Shi, Baocheng Wu, Wenhui Dang, Zhenxin Jiang, Yuan Li, Xiangwei Kong
In this paper the authors have put forward the concept of annular zero gas flow and developed the residual gas model, considering the parameters of gas solubility, slippage, and the oil-based drilling fluid volume coefficient [1-3]. The calculation results show that in the process of continuous gas influx at the bottom of the well, the phenomenon of annular zero gas flow can be defined in terms of
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Method for Designing and Checking Tensile Coefficient in Ultra-Deep Wells Based on Casing Axial Load and Quality Reliability Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-11-17 Erbiao Lou, Hongtao Liu, Tengfei Sun, Fen Peng, Bo Zhang, Bo Zhou, Duanrui Zhang
When evaluating the safety, reliability, and economic efficiency of casing strings in drilling operations, it is essential to define a reliable criterion of safety. According to the field statistics, when the casing tensile coefficient was in the range of 1.6-2.0, no casing failure happened in some deep and ultra-deep wells. On the other hand, the statistical data results need confirmation with an
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Prediction of Shear-Wave Velocities in Carbonate Reservoirs Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-11-17 Lin Li, Jinfeng Ma, Yang Yang
The purpose of this paper was to propose a method to predict shear-wave velocities in the process of AVO (amplitude variation with offset) inversion, to interpret seismic converted-wave data, and to match reservoir engineering information with seismic data in regions without shear-wave velocities. During CO2 flooding and sequestration, the shear-wave velocity varies with the pressure that is caused
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Novel Method for Studying, the, Imbibition Production Mechanism Using NMR Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-11-17 Chuixian Kong, Zhigang Wang, Tianquan Chang, Fukun Shi, Qingping Jiang, Ninghong Jia, Sheng Li, Kai Liu, Lichang Chen, Dongliang Chen
Tight volcanic reservoirs, characterized by strong heterogeneity and a well-developed fracture network, are usually difficult to develop. The development of effective ways to enhance production in such reservoirs is an important task in research work for oil and gas field development. The method of enhancing production by imbibition is a promising technology for oil recovery in tight reservoirs. In
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Estimation of Fuel Permeability of Fiberglass Reinforced Pipes and Conceptual Solution of the Problem of Leakproofness of Sectional Composite Pipeline Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-11-16 A. V. El’kin, V. V. Sereda
Systems approach is used to determine the types of disturbances arising in a linear pipe component during its functioning and their effect causing disruption of leakproofness of composite pipes. A physical model of the permeation process where the pipe wall is considered to be a porous medium penetrated by parallel capillaries is proposed and the results of estimation of the permeability of the wall
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Mechanical Behavior of the Production String in High-Temperature and High-Pressure Wells Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-11-16 Sun Tongcheng, Sun Lianzhong, Yang Xiaohui, Sun Tengfei, Liu Zuocai
High-temperature and high-pressure wells are facing a lot of problems such as complicated stress on the production string, severe deformation, and annular pressure, which seriously restrict the pace of drilling and development of HPHT oil and gas resources in China. In this paper, theoretical analysis and software calculation are combined to study the stress and deformation of an HTHP well string.
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A New Wellbore Stability Model for Shale Gas Horizontal Wells with Effects of Bedding Planes and Water Content Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-11-11 Wenzhe Li, Wei Li, Feng Dai, Xinyu Xiao, Qianbin Wen
Shale gas exploration and development have become a hot spot in the natural gas industry. Providing wellbore stability is one of the major engineering problems occurring in the process of drilling of horizontal shale gas wells. In this paper, based on circumferential stress analysis of horizontal wells and analysis of the geometrical relationship of bedding planes and the wellbore, a new horizontal
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Use of Modifying Additives in Solvent Dewaxing Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-14 S. A. Antonov, R. V. Bartko, A. I. Matveeva, B. P. Tonkonogov, A. Yu. Kilyakova, R. V. Filatov, O. B. Dogadin, P. A. Nikul’shin
Methods for enhanced solvent dewaxing, among which the use of modifying additives is promising and inexpensive, are presented. Modifying additives belonging to various chemical classes are described. Polymer compositions based on poly(meth)acrylates with 10-30 C atoms in the alkyl radical are currently the most interesting modifying additives. Use of this type of compounds in solvent dewaxing significantly
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Oil Pipeline Network Evaluation Based on Multi-Channel Convolution and H-Markov Model with Co-Evolution Mechanism Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-13 Qianqian Li, Min Chen
With the development of oil pipeline transportation domains, the layout of regional oil pipeline transportation network is doubly influenced by regional development and its own evolution, more than that, it is a dynamic concept. In order to get more reasonable evaluation results, it is necessary to improve the traditional evaluation method by regarding the network layout behavior and regional space
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Enhanced Thermal Oxidation Stability of Jet Fuel by Deoxygenation Treatment Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-10 Si Gong, Tinghao Jia, Lun Pan, Genkuo Nie, Xiangwen Zhang, Li Wang, Ji-Jun Zou
Thermal oxidation stability is an important parameter for jet fuel practical application. In this work, in order to evaluate the influence of deoxygenation on fuel stability, samples of typical fuels (JP-10 and RP-3) were subjected to deoxygenation by nitrogen purge and then subjected to accelerated thermal oxidation (180°C, 200°C, and 220°C). The parameters of hydroperoxide number, total acid number
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Application of Microwave Technology for the Treatment of Commercial Heavy Oils for Pumping in Trunk Pipelines Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-08 Cao Bo, V. S. Dergunov, S. N. Chelintsev
The paper discusses technical and economic aspects of technology used for transporting commercial heavy oil via trunk pipelines following its treatment with an ultrahigh frequency electromagnetic field (2450 MHz) as an alternative to preheating prior to pumping oils. According to a comparison of the life cycle costs (LCC) for these technologies, microwave treatment is preferable to “hot” pumping for
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Molecular Simulation on Competitive Adsorptions of CO 2 , CH 4 , and N 2 in Deep Coal Seams Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-08 Zhaozhong Yang, Su Yang, Jinxuan Han, Xiaogang Li, Yanjun Lu, Guofa Ji, Qiang Fu
In this paper we have simulated the competitive adsorption of CO2, CH4, and N2 gases in deep coal seams by building a graphite supercell structure and discussed the impact of pressure, pore size, and multicomponent composition on CH4 desorption. The results show that the adsorption capacity of a single component gas changes is in the order of CO2 > CH4> N2. For the CH4/CO2 competitive adsorption, absorbed
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Comprehensive Transportation Network Planning Method Based on Energy Conservation Concept Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-08 Qianqian li, Min Chen
Against the background of new urbanization, following the concept of “intensive, energy-saving, and ecological development,” the idea of interactive development of transportation and land use, minimum energy consumption, and environmental damage is put forward. Regional comprehensive transportation network will become the main trend of low-carbon ecological comprehensive transportation planning strategy
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Using Big Data to Establish Mathematical Model Method to Identify the Safety Displacement System of Oil Storage Tank Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-08 Jiang Wei, Wang Yang
In this paper we established a comprehensive mathematical model to evaluate the conditions of safety and displacement system of the oil storage tank. The obtained theoretical solution was then analyzed by comparison with the actual storage data. The problem was addressed by step-by-step approach. Firstly, the cross-sectional method is used to establish a mathematical model for the relationship between
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Molecular Structure Design Principles for Clay Hydration Inhibitors Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-08 Danchao Huang, Gang Xie, Jianguo Zou, Niyuan Peng, Yao Xu, Mingyi Deng, Pingya Luo
The crucial challenge associated with water-based drilling fluids for the extraction of shale gas is the inhibition of clay hydration in the drilling operation. The inhibition efficiency of shale inhibitors is determined by the content of particular groups in the molecule. In this report we studied the inhibition performance, inhibition mechanism, and environmental friendliness of three inhibitors
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Preparation and Properties of Single-Channel Slim-Hole Fiber-Elastic Emulsion Cementing Slurry System Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-08 Yihang Zhang, Jin Tian, Miao He, Jianjian Song, Yi Qin, Peng Xu, Mingbiao Xu
This paper is aimed at the problems of weak cement sheath, weak impact strength, low compressive strength, and low bonding quality in slim-hole cementing. The cement slurry system was improved by edding self-developing elastic emulsion combined with toughening fiber. The authors compared the influence of different toughening materials on the mechanical properties of cement stone. The evaluation results
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Protective Effectiveness of Oil Compositions in the Presence of Sulfur-Containing Corrosion Stimulators Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-08 V. I. Vigdorovich, L. E. Tsygankova, L. G. Knyazeva, N. V. Shel
The protective effectiveness of oil compositions in the presence of sulfur dioxide was studied. The moisture permeability of oil films and the corrosion rate of steels both protected and unprotected by oil films increase with increasing relative humidity and initial sulfur dioxide concentration in the atmosphere. The contribution of individual components to the protective effect of a film of synthetic
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Oxidation of Petroleum Asphaltenes Coupled with Iodination Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-07 K. V. Shabalin, L. E. Foss, L. I. Musin, O. A. Nagornova, A. T. Gubaidullin, A. F. Saifina, A. A. Khannanov, I. R. Vakhitov, D. N. Borisov
Oxidation of petroleum asphaltenes by potassium iodide (KI) is described. Oxidation under mild conditions is shown to be accompanied by iodination of the asphaltene aromatic core. The inducing reaction is the oxidation of sulfide sulfur atoms in the asphaltenes with reduction of iodate anion to molecular iodine; the coupled reaction, electrophilic substitution. X-ray photoelectron spectroscopy detected
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Research on the Production Decline Law of Junlian Coalbed Methane Development Test Well Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-07 Zhao Yang, Sun Tengfei, Wang Meizhu, Han Yongsheng, Mu Fuyuan, Li Lin, Jiang Bo, Zhang Jidong
Considering the production decline law of coal-bed methane wells, production decline can be divided into three types: exponential decline, hyperbolic decline, and harmonic decline. Research on the production decline law is very important for evaluation of CBM productivity. In this paper we have studied the law of production decline in Junlian region and established the production decline type for low
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Prospective Preparations for Accelerated Bioremediation of Oil-Contaminated Soils Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-07 A. Yu. Tsivadze, A. Ya. Fridman, B. P. Tumanyan, A. K. Novikov, I. Ya. Polyakova, A. P. Sudarkin
Oil pollution is a serious threat to wildlife and plants. Man-made disturbances can lead to complete or partial destruction of the soil cover. Creation of new and improvement of existing methods of soil cleaning and soil cover reclamation is an urgent problem. The article discusses promising reagents for cleaning and reclamation of oil-contaminated soils by bioremediation. The prospects of using the
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A New Drilling Fluid System for Temporary Plugging of Low Permeability Carbonate Reservoirs Containing H 2 S and CO 2 Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-07 Yihang Zhang, Miao He, Jianjian Song, Mingbiao Xu, Peng Xu
Carbonate reservoirs in Asmari block of Missan oilfield are characterized by complex geological characteristics. Temporary plugging is commonly used for effective damage control caused by the working fluid when drilling in such complex multi-pressure reservoirs and for preventing leakage, blowout, and collapse in long open hole wells. In this paper a new temporary plugging drilling fluid formulation
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Correction to: Effect of Heavy Metals on Ecosystems Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-06 A. F. Tumanyan, A. P. Seliverstova, N. A. Zaitseva
To the article “Effect of Heavy Metals on Ecosystems” by A. F. Tumanyan, A. P. Seliverstova, and N. A. Zaitseva, Vol. 56, No. 3, pp. 390-394, July, 2020
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Three-Dimensional Numerical Simulation of the Influence of Physical Parameters of Cement Sheath on the Stability of Separated Cementing Interfaces Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-06 Futang Hu, Liang Cheng, Tao Cheng, Yan Zhou, Zhiwei Jia, Yi Zhang, Liming Shao
The current research on the stability of the formation - cement sheath - casing combination is mainly based on the plane modelling, with established 3D model as just an example. There are no systematic studies of the three-dimensional model under triaxial ground stress when the influence of physical parameters on stability of the composite cementing interfaces is evaluated. By establishing a three-dimensional
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Micro-Sweep Characteristics of CO 2 Flooding Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-06 Nan Li, Xian-hong Tan, Zhong-ying Ren, Zhu Guo-jin, Xiao-feng Tian, Liu Fan
In this paper a micro multi-phase flow equation is built based on the mechanism of a multi-phase fluid flow in porous media. The authors consider the impact of convection diffusion and the improved component mixing rule. In order to accurately evaluate the fluid flow in a low permeability reservoir, two models are established to simulate simple pore throat structure and complex pore throat structure
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Possible Components for Increasing the Resources of Automobile Gasolines Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-06 E. A. Chernysheva, Yu. V. Kozhevnikova, E. Yu. Serdyukova, T. I. Stolonogova
Biocomponents and bioadditives for automobile gasolines that are widely used in global practice are reviewed. The possibility of involving an alternative feedstock, i.e., biomass, into the motor-fuel production system is investigated.
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Adaptability of Polymer Molecular Coil Dimension in the Pore Structure of the Reservoir Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-06 Haidong Wang, Yikun Liu, Tenglong Yu, Jiqiang Zhi
A series of experiments was carried out to study the matching relationship between the pore structure in the reservoir and the molecular radius of gyration. The hydrodynamic radius Dh (molecular coil dimension) was tested by dynamic light scattering and was be used to characterize the crimping degree of polymer chains and molecular coil dimension. The storage modulus and loss modulus were studied through
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Effectiveness of Vegetable-Oil Fatty Acids as Antiwear Additives for Diesel Oils Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-06 B. P. Tumanyan, P. Yu. Shcherbakov, E. A. Sharin, M. E. Matin, O. A. Matveeva
The current study is devoted to the use of vegetable-oil fatty acids (FAs) as lubricity additives for modern diesel fuels with ultra-low sulfur contents. The effectiveness of liquid castor, linseed, coconut, and sunflower oils in the base components of diesel fuels for hydrotreating, hydrocracking, and hydroisomerization is comparatively evaluated. It is established that all investigated vegetable-oil
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Preparation and Performance Evaluation of a Hydrophobically Associating Polymer as a High-Strength Water-Swelling Temporary Plugging Material Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-06 Hui Li, Yan Wang, Lin Qiao, Hanxu Yang, Wei Zhou
The use of degradable polymer materials as controlling additives to the working fluid during hydraulic fracturing is an area of interest in developing stimulation technologies. A temporary plugging agent with high compressive strength is used to block pre-fracturing or natural cracking and to initiate new fracture joints in order to increase the oil and gas passages, thereby realizing a stable production
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Modeling of the Reactivity of Asphaltenes in Electrophilic Substitution Reactions Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-10-06 K. V. Shabalin, V. V. Neklyudov, L. E. Foss, D. N. Borisov
Quantum-chemical modeling of the spatial and electronic structure of asphaltenes containing different numbers of electron-withdrawing substituents used the DFT/B3LYP-6-31G(d,p) method to predict the reactivity of petroleum asphaltenes upon their chemical modification. The change of torsion angle of the polycondensed aromatic asphaltene structure depending on the type of substituent was studied. The
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Removal of Aging Products from Working Motor Oils without Draining them from Engine Crankcases Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-09-11 V. V. Ostrikov, D. N. Afonichev, V. I. Orobinskii, V. I. Balabanov
The dependences of changes in the contaminant contents and base numbers of motor oil during refining are established. Finely disperse contaminant particles are enlarged if a mixture of ammonium hydroxide with 1% urea is added to working engine oil. Subsequent centrifugation with cleaning agents incorporated into the lubrication system allows almost all contaminants to be removed from the oil. The dependences
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Reasonable Degree of Formation Pressure Maintenance in Low Permeability Reservoirs Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-08-26 Yan Wang, Hui Li, Lin Qiao, Hanxu Yang, Wei Zhou, Qiuju Yi
Due to the decline of formation pressure in the middle and late periods of low permeability reservoir development, the development effect deteriorates. Therefore, it is essential to restore and maintain reasonable formation pressure. Based on the two-phase fractional flow equation in low permeability porous media, we consider the flow characteristics in reservoirs with threshold pressure gradient and
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Production Technologies of Various Types of Environmentally Friendly Plasticizer Oils Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-08-26 S. A. Antonov, B. P. Tonkonogov, A. Yu. Kilyakova, V. A. Dorogochinskaya
The production technologies of environmentally friendly plasticizer oils such as TDAE, TRAE, MES, and NAP for the rubber and tire industries are considered. Their basic physicochemical properties and specific application examples are presented. The influence of the types of plasticizer oils on the performance properties of rubber products and tires is described.
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Unsteady Pressure Dynamics of Polymer Flooding Reservoirs Considering Concentration Changes Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-08-21 Qing Xie, Jianping Xu, Minjing Chen
In this paper a model is established for unstable seepage flow with polymer concentration and pressure diffusion coupling, considering the effects of polymer molecular diffusion, adsorption, and viscoelasticity of polymer solution in the formation. The factors are close to the actual seepage parameters of the injected reservoir. For the nonlinear adsorption, the combined variable and the analytical
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Monitoring and Control Model for Coal Mine Gas and Coal Dust Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-08-21 Zhigang Zhu, Hongbao Wang, Jie Zhou
In order to provide production safety and determine the optimal ventilation scheme in coal mining, the mines should be classified by their gas emission and mine security rank. In this paper the three models of mine classification, mine insecurity, and the optimal ventilation required by the mine are established and solved by MatLab and Lingo software. In answer to question 1, firstly, the daily absolute
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Effect of Heavy Metals on Ecosystems Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-08-19 A. F. Tumanyan, A. P. Seliverstova, N. A. Zaitseva
Environmental pollution is one of the most serious problems in the sphere of ecology. Rapid industrialization, discovery and development of new oil fields, modern agricultural practices, and other types of anthropogenic activities contribute substantial amounts of toxic heavy metals to the environment. Heavy metals are some of the prominent substances that pollute soil, water and air. Pollution by
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Visualized Experimental Study of Nitrogen Injection Supression of Bottom Water Coning Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-08-19 Qingping Jiang, Chao Jindong, Wang Zhigang, Ninghong Jia, Kong Chuixian, Chang Tianquan, Liu Kai, He lipeng, Li Tong
The reservoirs of volcanic rocks in the Junggar Basin of Xinjiang in China are abundant in reserves with potential for exploration and development. They have the characteristics of high heterogeneity and fracture development. The occurrence of bottom water coning is a serious problem during oilfield development, which leads to a rapid increase in the well water cut and greatly affects the reservoir
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Well Testing Technology and Production Dynamics Analysis of Condensate Gas Reservoir Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-08-19 Wang Chunsheng, Zhang Lei, Song Liangye
With the progress in oilfield development, low-quality resources are gradually developed, and related research is focused on condensate gas reservoirs. Complex physical properties of condensate gas reservoirs and complex components of condensate gas system make well testing and productivity analysis of condensate gas reservoir difficult, which is the main reason why there has been no breakthrough in
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Main Problems of Gas Processing in Russia Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-08-19 I. A. Golubeva, D. S. Khudyakov, E. V. Rodina
Gas processing is an independent dynamically developing industry whose role is growing constantly in connection with exploration and development of new gas and oil fields and increase of volume of recovered hydrocarbons subjected to processing. For further development of the industry it is essential to improve the existing technologies and equipment, which is impossible without analysis and solution
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Fracture Propagation Characteristics in Horizontal Wells Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-08-18 Liu Yang, Jindong Cao, Zhigang Tao, Shuo Wang, Jun Yang, Bingxiang Dong
Field experience shows that horizontal well multi-stage fracturing technology can transform the volumetric pressure crack network in the formation and has been widely used in unconventional oil and gas resource exploitation. According to the requirements of horizontal well fracturing operations, this paper simulates the law of horizontal well fracturing in low-porosity and low-permeability sand-shale
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Microscopic Mechanism of Water Vapor Adsorption Experimennts on Deep Soft Rock Water Vapor Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-08-18 Liu Yang, Jindong Chao, Fukun Shi, Zhigang Tao, Xiaoyu Zheng, Jiaxuan Zhang, Chen Chen
At present, research on the influence of water on the physical properties of rocks is mostly focused on the macroscopic angle. Studies on nanoscale pore structure changes caused by water are few. Shale is characterized by good pore structure and high content of hydrophilic clay minerals susceptible to water. Based on this, in this paper the shale samples were obtained from underground layers 3000 m
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Influence of Various Hydrocarbon Groups on the Effectiveness and Environmental Characteristics of Anti-Collapse Agent for Drilling Fluids Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-08-18 Yuan-Zhi Qu, Kai-Ping Tian, Ming-Yi Deng, Ren Wang, Jun Pu, Gang Xie
With the country’s increasing requirements on environmental performance of drilling fluid treatment agents, which the traditional anti-collapse agent design has been unable to meet, research on environmentally-friendly anti-collapse agent molecular design is becoming increasingly important. This paper studies the effect of different types of groups on the anti-collapse characteristics and environmental
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Effect of the Earth’s Rotation on Wellbore Trajectory and Method of Correction Chem. Technol. Fuels Oils (IF 0.405) Pub Date : 2020-08-18 Sun Tengfei, Xu Haodong, Li Zijie, Zhao Bo, Li Wenming, Zhang Yang
In this paper the method of mechanical modeling and formula derivation is applied to explains how earth rotation causes the apparent gravity action line to deviate from the ground plumb line. Analyzing the methods of the compass pendulum and the three-accelerometer and three-magnetometer survey, this paper demonstrates the principle that earth rotation causes well inclination error and azimuth error