bluuebunny/crossref_metadata_2025_split huggingface dataset:
Calculation and visualization of relative position uncertainty between adjacent wellbores
Authors: Diao Binbin , Gao Deli , Jiang Chuang 
Published: November 2019

Abstract
In directional drilling engineering of cluster wells and infill wells, it is important to scientifically assess the risk of wellbore collisions between wells being drilled and adjacent wells that have already been drilled. At present, the calculation results of adjacent well distance scanning and separation factors often used in drilling sites still cannot scientifically evaluate the risk of wellbore collision. This paper proposes to characterize the relative position measurement error between the reference well and the comparison well by the size of the combined error ellipsoid with the effect of well diameters of reference well and comparison well. And, the calculation model of the combined ellipsoid is established. This paper also introduces the 3D visualization method of relative position measurement error between adjacent wells based on OpenGL. The example calculating shows that the calculation results and 3D views of the relative position measurement error of the adjacent wells a can be used to judge the reliability of the calculation result of the pedal curve separation factors, and provide a more scientific basis for the implementation of anti-collision operations in directional drilling. So the research has important application value.
Study on Associated Rare Earth Minerals in Huayang Chuan Uranium Polymetallic Mine
Authors: Wang Dequan , Wang Jianguo , Wang Yizhong 
Published: November 2019

Abstract
Huayangchuan uranium polymetallic deposit is located in Huaxian County, Huayin City, Shaanxi Province.The geotectonic location belongs to the Xiaoqinling intracontinental orogenic belt on the southern margin of the North China block.The average content of rare earth in uranium ore reaches 740 ×10−6. Rare earth minerals in ores have been studied by means of microscopic identification and scanning electron microscopic energy spectrum analysis.we believe that the rare earth minerals in Huayangchuan uranium polymetallic ore are mainly brown epidote, bastnaesite, gadolinite, monazite and ancylite. Among them, the most important rare earth mineral is epidote.
Synthesis and study of polystyrene/montmorillonite nanocomposite emulsion drilling fluid lubricant
Authors: Zhang Zhengrong , Liu Huiting , Yu Yongjin , Ke Yangchuan , Yu Chengcheng 
Published: November 2019

Abstract
Conventional drilling fluid lubricants could effectively improve the lubricity of the system, but the temperature and salt resistance was poor. In this paper, a new type of emulsion drilling fluid lubricant was prepared by mixing a polystyrene/modified montmorillonite (MMT) nanocomposite emulsion with vegetable base oil. The nanocomposite emulsion was prepared by emulsion polymerization of organic MMT, modified with the tributyltetradecylphosphonium chloride and sodium lauryl sulfonate, and styrene. The work revealed effects of the amount of modified MMT and lubricant on the performance of the drilling fluid. It was shown that lubricants have less effect on the rheology and density changes of the drilling fluid. The lubricity, temperature resistance and salt resistance of the drilling fluid were enhanced, while the fluid loss was significantly reduced due to the addition of the lubricant. Our results provide the basic method needed to guide design of the lubricant.
Discussion of the deflagration index expression for cylindrical vessel
Authors: Song Zhe , Zhang Peili , Liang Jianjun , Zhang Deyang 
Published: November 2019

Abstract
The cube-root law and the expression of the maximum overpressure rise rate available in the most literatures are accurate when they are used to calculate or assess the gas explosion intensity in a spherical vessel, however, large deviation will be occurred when they are extended to the vessels of other shapes and sizes. The deflagration index KG expression for the cylindrical vessel case is put forward and discussed, and the difference between the deflagration index formula of the spherical and cylindrical vessel are also simply discussed. The conclusions drawn by this paper may be useful to the gas explosion intensity calculation or assessment in cylindrical vessel explosions.
Study on new method for evaluating reservoir formation pressure by wellhead pressure
Authors: Wen Xiaoyong , Yang Jing , Geng Shaoyang , Li Ke 
Published: November 2019

Abstract
Formation pressure is an essential parameter for calculating the dynamic geological reserves, evaluating the development effect of oil and gas fields, conducting the daily dynamic analysis of oil and gas Wells and predicting the dynamic of oil and gas fields. Generally, the calculation of reservoir average formation pressure is to use the pressure in the infinite formation to solve the formation pressure. This paper presents a new method for calculating the pressure at any point of one source and one sink by using wellhead pressure. This method has been well applied in the Saertu-Putaohua industrial area.
Research on the correlation between regional energy consumption and urbanization rate in China
Authors: Xu Zhao , Shan Baoguo , Duan Jinhui 
Published: November 2019

Abstract
By the end of 2018, China’s urbanization rate was close to 60%, and the proportion of energy consumed by cities to the total national energy consumption exceeded 80%. Cities, like huge machines that never stop running, consume a lot of coal, oil and gas, electricity day and night, and maintain the food, clothing, shelter and transportation of urban residents, as well as thousands of lights. Study of the relationship between urbanization rate and energy consumption provides important technical support for regional energy supply and demand research and forecasting. The results show that the process of urbanization development will inevitably lead to a large consumption of energy resources and an increase in per capita energy consumption.
Flora analysis of seed plants in Daxiong mountain of Hunan province
Authors: Li Changqing , She Jiyun , Wu Yi 
Published: November 2019

Abstract
Based on field investigation and relevant information about Daxiong Mountain, we do the area types analysis of the seed plant. The results showed that: (1) There were1218 species of seed plants in this region, belong to 166 families and 668 genera, including 6 families, 11 genera, 14 species of gymnosperm and 160 families, 657 genera, 1204 species of angiosperms. (2) The composition of the seed plants in this region was highly dispersed and very complex. In the composition of the families, the number of small families was the most, which rate was 40.00%. However, the major families contains the largest number of plant species, the rate was 34.51%. In the composition of the genus, species focus on the small genera and the single genus that accounted for 37.14% and 51.43%. (3) The flora of seed plants in this region was complex. There were 267 genera, 46.05% genera of the total, in the tropical distribution. Followed by the temperate distribution of 171 genera, accounting for 28.24%. In addition, the Asian distribution including 168 genera, 27.71% of the total and the world distribution including 62 genera, accounting for 9.28% of the total.
Study on suitable air volume for cooling in horizontal roadway
Authors: Bian Menglong , Wang Wencai 
Published: November 2019

Abstract
In the deep mining of mines, the choice of air volume needs to consider both the cooling effect and the energy consumption. In order to obtain the basis for selecting the suitable air volume in the horizontal roadway, based on the theory of heat transfer and thermodynamics, the heat transfer relationship in the horizontal roadway is analyzed. The study found that the suitable air volume mainly considers the influence of three parameters: air self parameters, roadway specification parameters and temperature boundary parameters. As the air volume increases, the cooling effect gradually decreases, and the energy consumption gradually increases. After the air volume reaches a certain value, the cooling effect is basically unchanged, and the energy consumption is too high to bear.
Research and empirical analysis on structural decomposition model of energy saving contribution sources for provinces in China
Authors: Chen Yunfei , Cao Yuwei , Zeng Bo , Zeng Ming , Guo Xiaopeng , Shan Baoguo , Jia Dexiang , Xu Shaojun 
Published: November 2019

Abstract
With the continuous improvement of China’s economic scale and increasing energy demand, various regions have become increasingly dependent on energy, and energy conservation has become an important measure to ensure energy security and protect the environment.In this context, in order to ensure the targeted implementation of energy-saving and emission reduction measures in various regions and promote the gradual transition of China’s economy to low-carbon green, this paper analyzes the current energy consumption status of each province and decomposes its energy conservation contribution source structure. And an empirical analysis was carried out to effectively promote the implementation of energy conservation in China.
Basic Research on Application of Airborne Ventilation and Dust Removal in Fully Mechanized Mining Face with Large Mining Height
Authors: Guo Yongwen , Mo Jinming , Liu Yunqiu , Ma Wei , Zhang Sheji 
Published: November 2019

Abstract
Taking the fully mechanized mining face of bulianta 12511 as the research object, the distribution law of dust movement in fully mechanized mining face with 8m large mining height was numerically simulated by using CFD software. Through the simulation results of the original dust field, it is found that the dust produced by the collapsed coal seam diffuses to the rear of the shearer under the action of wind flow, the highest point of movement of high-concentration dust mass can reach 4m, and the dust concentration gradually decreases along the roadway. High concentration dust is mainly concentrated in the 10m range before and after the shearer and on the side of the bottom plate close to the coal retaining plate, with a maximum of 3500mg/m3. In order to effectively reduce the dust in the working face, prevent dust accumulation and pollute the underground working environment, this paper innovatively proposes to install an airborne dust collector in the large mining height working face to control the dust spreading to the pedestrian side at the dust source and purify the dust. By studying the influence of dust collector placement position and treatment air volume on the dust movement and distribution rule and dust removal effect of the working face, the optimal dust removal efficiency of the working face with large mining height is obtained by the dust collector placement position and treatment air volume adaptation combination, and the maximum dust removal efficiency can reach 100%.
Analysis of chemical characteristics of water in the formation of the Sudong area
Authors: Wang Dongmei , Zhang Lin , Yang Zhikai , Yang Yang , Xia Yang 
Published: November 2019

Abstract
In Sudong area, the relationship between gas and water is complex and the hydrochemical characteristics of formation water is unclear, therefore, site managers are eager to figure out the formation water properties and its distribution characteristics in Sudong gas reservoir. In this paper, based on the analytical data of formation water, we studied the type of formation water, the chemical characteristics of produced water, and the hydrochemical characteristics coefficient. The results showed that the water produced in the south and north is formation water and the middle is condensate water; the fracturing fluid is discharged at the early stage of the gas well production, and the formation water is gradually produced in the later stage; the salinity is high in the southwest and lower in the northeast; the water storage condition in the southern formation is higher than that in the north; the time of the water and rock action in the southern area is stronger than that in the north, and from the perspective of oil and gas preservation, the south is better than the north. The research would have a great significance for improving the understanding of formation water in the Sudong block and guiding the rapid and efficient development of the gas field.
Optimization of the Drain Mode for No. 0 High Pressure Heater
Authors: Zhang Yanpeng , Li Susheng , Li Si , Zheng Wei , Zhu Lingkai , Liu Jun , Lao Jinxun 
Published: November 2019

Abstract
The addition of No. 0 high-pressure heater is a new technology with energy saving and emission reduction benefits, the economic analysis of No. 0 high-pressure heater under different loads and drain modes is provided on a 680 MW unit based on the Equivalent enthalpy drop method principle and the comprehensive economic drain mode for No. 0 high-pressure heater is recommended.
Research on the Technique of Multistage Functional Filtration to Repair Black and Odorous Water
Authors: Wang Jing , Dong Zhiliang , Qiu Qingchang , Zhou Hongxing , Deng Kaifang 
Published: November 2019

Abstract
It is of great significance for environmental protection to carry out in-depth research on the treatment of black and odorous water body and form effective water remediation technology. The ecological technology of multistage functional filtration for water restoration can be used as a new and reliable combined filtration process for advanced treatment of black and odorous river, which can effectively intercept pollutants from point sources and purify watershed water. In this paper, a new type of water purification device consisting of cobblestone, quartz sand, activated carbon and PP cotton is developed, which is used to deeply treat black odorous water body and study the filtration and adsorption performance of filter materials on target pollutants. The filtration and adsorption performance of the filter material to the target pollutants, and the influence of the thickness of the filter layer and the particle size of the filter material on the filtration efficiency were studied. The water quality was effectively improved and the purpose of treating the black odor water body was achieved.
A novel optimization method considering fluid production rate and division time for 2D reservoir
Authors: Ma Yinfei , Shi Anfeng , Wang Xiaohong , Tan Baoguo , Sun Hongxia 
Published: November 2019

Abstract
The adjustment and control of the fluid production rates is one of the primary methods to increase the cumulative oil production for water flooding reservoir. In this article, the oil production optimization problem of two-dimensional water-flooding reservoir under the condition of fixed total fluid production rate is studied. The production process is divided into several segments. The relevance between the division time and the fluid production rate is considered. A novel optimization method considering both segmented time and fluid production rate is proposed. The stimulating effect on oil production of this method is tested by a realistic 2 dimensional oil reservoir in China. Compared with other conventional strategies and optimization schemes, this optimization method gains higher cumulative oil production, with the better water sweeping efficiency. For engineering practice, the proposed method may bring more economic benefits.
Spacing Chart for Ultra-low Permeability Reservoirs
Authors: Song Yang 
Published: November 2019

Abstract
The foreign TM oilfield is an ultra-low permeability reservoir with deep burial, poor reservoir properties, poor seepage capacity and severe heterogeneity. The production declined rapidly during water injection development process, and the absorption capacity of the injection well is poor. Some production wells are not affected by the injection wells. In order to improve the effect of water injection development, it is necessary to infill the existing well pattern, reduce the injection-production well spacing, and establish an effective driving system for the reservoir to improve the reserves utilization. This paper classifies the effect of water injection development in foreign TM oilfield, establishes the relationship between injection-production well spacing and formation permeability, and then obtains the effective driving well spacing under different permeability of ultra-low permeability reservoirs. This method plays an important role in the study of well pattern deployment in the water injection development process of ultra-low permeability reservoir.
Study on the Impacts of Land Consolidation Project on Soil Quality
Authors: He Lirong 
Published: November 2019

Abstract
Taking Sunjiacha Town, Shenmu City, Shaanxi Province as an example, the nutrient characteristics and physical and chemical properties of soil samples were studied and analysed. The results showed that the soil pH of X001 sample was the lowest, 7.7, and the total salt content of X002 sample was the highest, which was 1.3 g.kg-, while that of X008 sample was the highest, which was 32.85 mg.kg-. The highest content of soil organic matter was 84.3 mg kg-, the highest content of total nitrogen was 1.75 g kg-, the highest content of available phosphorus was 7.4 mg kg-, and the highest content of available potassium was 103 mg kg-. According to the National Classification Table of Soil Nutrient Content, the soil texture in the study area is sandy, pH is alkaline, available phosphorus and available potassium are deficient or extremely deficient. Except for the rich organic matter and total nitrogen in the black clay layer, the organic matter and total nitrogen in other layers are extremely deficient.
Study on the absorption effect of hydrolyzed hoof horn powder on cadmium ions
Authors: Chen Hongbing , Li Yadong , Deng Meie , Lu Jindeng 
Published: November 2019

Abstract
Animal hoof horn has complex porous structure and rich keratin, crushed and sieved, adding 5% KOH in the quality of the hoof horn powder, and mixing at 1:5 ratio of solid to liquid, adding water at 121 °C, Hydrolysis at 2 atmospheric pressure for 5 hours, the horn powder was completely hydrolyzed into the hydrolysis products containing sulfhydryl and disulfide bonds, the hydrolysates of the powder were added into 50mg•L−1, 2.0mg•L−1 cadmium Ion solution, centrifuged for 17h and then centrifuged to detect the residual cadmium ions. The results showed that the best particle size was treated with 100 mesh fine mesh powder, the lowest residual Cd2+ concentration in the solution was over 75%, and the high concentration 50mg•L−1 was the best, the residual amount of Cd2+ was 14.887mg•L−1, the removal rate was 70.24%. The adsorption effect of the hydrolyzate of Hoof horn powder on cadmium ion solution with concentration of 2.0 mg•L−1 However, the effect was not significant. When the dosage reached 30ml, the residual amount of Cd2+ was reduced to 1.238mg•L−1 and the removal rate was 38.10%.
Analysis and Influence of Salt Content on Stability of Saline Soil Subgrade Slope
Authors: Zhang Yang , Qu Zhenpeng , Yang Lixia 
Published: November 2019

Abstract
In order to determine the stability of the subgrade of the saline soil subgrade under different salt contents in the cold region. Two soil samples were selected to determine the salt content and mechanical parameters, and then the Slide software was used to analyze the stability of subgrade slope. The results show that the less the salt content, the greater the shear strength of the soil and the higher the stability of the subgrade slope.
Based-estimated volatility Real Option evaluation method in drilling exploration and development
Authors: Yin Huimin 
Published: November 2019

Abstract
Oil and gas field development are characterized by high risks and uncertainties, thus making relevant risk evaluation is an essential decision to reduce development losses. On the basis of comprehensive analysis of traditional evaluation methods, combined with a gas field development example, the Real Option method is used to break through the “static” evaluation of the Net Present Value of traditional assessment, and the uncertainty factor is taken as an active impact factor, which the bigger to may excavate greater result. The benefits are calculated by numerical simulation using Monte Carlo Simulation method to establish a Real Option model based on volatility estimation. The evaluation results show that the Monte Carlo Simulation uses the correlation between the indicators to establish a Net Present Value model, which can comprehensively consider a variety of factors, and can also obtain the corresponding cumulative probability. The results are more objective and more realistic, and more reasonable evaluation.
Research on Grab Swing Control Method Based on Time Delay Filter
Authors: Zhang Zhaowen , Jiang Huilue , Du Dawei 
Published: November 2019

Abstract
Grab swing during crane acceleration and deceleration will have an impact on work efficiency and safety. In this regard, the swing amplitude of the grab during the operation must be controlled within a certain range. According to the mechanical analysis of bridge crane’s grab, the mathematical model between crane’s horizontal movement and grab swing is established. A time delay filter technique is applied to shape the acceleration control signal, thus effectively control the swing angle of the grab. Simulation results show that the control method with time delay filter could eliminate the swing of the grab even without measuring the swing angle, and is feasible for engineering applications.
Design and test of slope monitoring digital inclinometer
Authors: Huang He , Lu Hui , Yan Zongling , Zhang Xiaosong , Tan Ling , Mao Youping 
Published: November 2019

Abstract
According to the functional requirements of the slope monitoring system, the angle sensor is taken as the research object, and the digital inclinometer suitable for slope monitoring is developed. The software and hardware design, data error correction, data transmission protocol and external structure design of the inclinometer are mainly solved. At the same time, the joint adjustment, installation and operation and maintenance of the slope monitoring system are completed.
Slope geological monitoring system based on wireless sensor transmission protocol research
Authors: Huang He , Lei Ming , Zhang Xiaosong , Yan Zongling , Du Mengqin , Xu Feng 
Published: November 2019

Abstract
With the continuous development of modernization in the central and western regions, the construction speed of the Panshan Highway has accelerated, and a large number of slopes have been formed. In order to ensure the safety of road vehicles in Laoshan District, it is necessary to monitor the safety of dangerous slopes, so it is essential to establish a complete slope geological monitoring system. Based on the development of wireless sensor network technology, the key technology of wireless sensor network technology based on slope monitoring system is studied, and a simple and effective wireless sensor network protocol is designed. The protocol architecture is divided into four layers, of which the link layer is mainly based on the IEEE802.15.4 protocol technology. The routing layer is mainly based on DSR technology, but it proposes a new method to solve routing loop problems, and designs a cooperative working mode of link protocol and routing protocol. Slope geology based on the agreement. The monitoring system is well monitored for the safety of dangerous slope geology.