bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis on the Wheat Growers Insurance Purchasing Decisions in Hebei Province China
Authors: Rehman Abdur , Jian Wang
Published: June 2014

The aim of this article was to evaluate the qualitative and quantitative variables influencing the wheat insurance purchasing decisions using farm level survey data in Hebei Province of China. The field surveys were carried out using questionnaire, focus group discussion and on site visit throughout in the targeted rural areas. Software Eview 6.00 and the binary logit regression model were used to determine the main factors influencing the farmers’ wheat insurance purchasing decisions. Results revealed that majority of the farmers were associated with the insuring of their wheat crop in different ways. In the focus group discussion it was found that the study area has been more prone to natural disasters and the wheat productivity was also affected. However, the findings presented in the article may help to improve the farmers’ wheat insurance purchasing decisions.
Analysis of Sequence Architecture and Hydrocarbon Accumulation Models: An Example from Hailar Basin, Northeastern China
Authors: Liu He , Huang Wei , Zhu De Feng , Li Jun Hui
Published: June 2014

Wuerxun Sag is one of the main oil and gas exploration and development zones in the Hailar Basin. Comprehensive research on the sequence architecture and depositional filling during the Early Cretaceous shows that filling sequences are controlled by tectonic evolution and have distinct phases. The sequence configuration can be divided into three types: steep-slope type, step-fault type and deep sub-sag type. Tectonism controls the sediment distribution process and sand accumulation. Results show that different tectonic units have characteristic sequence styles and depositional systems. Different sequence patterns also determine different kinds of reservoirs in different tectonic units. The fault-controlled steep-slope area mainly develops fault nosing structure reservoirs and fault lithologic reservoirs; step-fault belts in gentle slope areas develop fault-block reservoirs and fault-lithologic reservoirs; in deep sub-sag areas sand lens reservoirs develop. In addition, the margins of deep sub-sag areas probably develop fault-lithologic reservoirs.
Study of Sedimentary Microfacies of Putaohua Reservoir at Xu 30 Block in Yushulin Oil Field
Authors: Qin Ming , Ma Shi Zhong , Gao Zan , Chen Xiao Fei
Published: June 2014

Xu 30 block is located in the southwest of Yushulin oil field, Putaohua reservoir is the main reservoir. Based on the analysis of the core information and well logging facies elements, and combining with the sedimentary characteristics of the study area, this paper discusses the types of sedimentary microfacies of Xu 30 block in Yushulin oil field in order to guide the future oil and gas exploration and development. The results show that the target layer in the study area having obvious characteristics of underwater distributary channel is delta front facies, and it can be divided into underwater distributary channel, seat body, sheet sand, the inner front sheet sand and the external delta front sedimentary microfacies. Further analysis of sedimentary characteristics, this paper establishes logging microfacies models and draws out 9 time units sedimentary microfacies in plane distribution diagrams. This study can offer not only an important geologic evidence for Putaohua reservoir at Xu 30 block, but also a basement for the distribution law of oil, water and the remaining oil.
Cultivation of Students' Creativity in University Architectural Education in the 21st Century
Authors: Zhao Zhi Qing , Tao Li
Published: June 2014

today the architectural design activity is increasingly globalized, Based on the study of the architectural culture methods of creative thinking and the process of training, this paper discussed the develop and training of students thinking creative in the process of university architectural education, in order to cultivate the architectural talent with creative ability.
The Dialectical Relationship between Construction Organization Design and Engineering Cost
Authors: Ding Yu Xian , Ma Ning Bo , Ding Yu Xin
Published: June 2014

As the operation cores for construction enterprises, construction organization design and engineering cost interact with each other and are closely related. The scientific construction organization design is to have comprehensive plan and overall design for the time, space and resources of the engineering construction, seen as the foundation of engineering cost and the core of cost management. The confirmation of project cost is largely attributed to the construction management plan since only according to the rational construction scheme and construction technology can the correct unit price for the project be calculated before the reasonable offer of engineering cost which assures the smooth progress of construction organization..
The Status Analysis and Suggestions of Graduation Practice for Undergraduates Majoring in Mining Engineering
Authors: Shi Jian Jun , Tian Duo , Zhao Qi Feng
Published: June 2014

Graduation practice, which is carried on after the students have completed all the major courses, is an important part of practical teaching. It is the basis of graduation design and thesis. We took students to a mine in Zhang Village, located in the middle energy area of Hebei Province, and realized some problems existing in the practice of mining engineering. In this paper, we propose some measures adopted in the practice and their effects. Furthermore, we propose some suggestions for improvement.
Safe and Efficient System Design of University Financial Information System
Authors: Ji Jun , Xing Fei Fei , Du Jun
Published: June 2014

The establishment of security and overall system protection system in financial of university information system is currently facing important issues. This paper uses the financial of university information system of Beijing as background. The aim is to protect against overall system levels within the net for targets. The security and overall system protection system can enhance the security of a level and ensure financial of university information system in a secure and stable network environment and effective operation.
Select Regional Strategic Emerging Industries by Using Multidimensional Index System: An Empirical Analysis
Authors: Liu Tie , Wang Jiuyun
Published: June 2014

We build a multi-dimensional qualitative & quantitative Indexes System and using AHP & TOPSIS method for industrial choice evaluation of regional strategic emerging industries of China. We take Anhui Province emerging strategic industries choice to do the empirical analysis as an example. Through comparative analysis, it proves the feasibility and reliability of the multi dimension evaluation Indexes System , verify the strategic significance, industry development, industry value - region matching degree are positive correlation with industry selection result. Finally, the paper put forward suggestions to government for the adjustment of industrial policy.
The Evaluation Model and Index Screening of Innovation Performance - Taking High-Tech Enterprise as an Example
Authors: Ma Ling , Li Xiang Dong , Cai Wei , Zhang Dong Xue
Published: June 2014

Basing on the existed theory, the paper built the evaluation model of innovation performance for high-tech enterprise. By analysis of investigation data, the evaluation indexes were preliminary screened. Finally the evaluation index system of innovation performance was proved to be solid reliability and validity through confirmatory factor analysis. The verified evaluation model and index system by quantitative research in the paper provided theoretical basis and methods for innovation performance management of high-tech enterprise, which was beneficial for their promotion of innovation ability and laying foundation for innovation development.
A Preliminary Study on CSAMT Anti-Jamming Transmitter System
Authors: Li Dang , Wang Jun Lu , Li Yong , Li Jian Hua , Lin Pin Rong
Published: June 2014

On the basis of the relevant identification theory of pseudo-random code signal, the signals of CSAMT are divided into three parts according to the frequency of the signal. The signals which are susceptible to 50Hz interference signal and its harmonic components should be set by pseudo-random code way. Others are set by single square waveform way. The Control and signal generation software of the transmitter system is built on the advanced virtual instrument platform, LabVIEW. The hardware of the transmitter system is mainly composed of host computer, data acquisition card, high-speed optocoupler, IGBT driver module and four IGBT switches. The data acquisition card generate PWM signals, the high-speed optocoupler isolates low-voltage part and high-voltage part. IGBT drive module and four IGBT switches constitute high-voltage part. Entire transmitter system is suitable for different environments and research tasks, the transmit frequency are adjustable, and the pseudo-random code signal has strong capability to suppress the interference signals. The control software on host computer is simple and clear. There is good prospect for the use.
Surrounding Rock Convergence Rule along the Working Face Tendency of Recovery Room
Authors: Wu Zhigang , Li Wen Zhou
Published: June 2014

Recovery room could ensure the returning safety of working face equipment, improve mining and moving speed efficiency. Surrounding rock of working face will be distributed after recovery room driving, surrounding rock convergence drastically, and mining influence surrounding rock of recovery room also. Stress distribution around recovery room complex. Surrounding rock deformation rule along tendency of working face was studied by filed measurement in Sihe cola mine of the Jincheng coal district in China. It reveals surrounding rock deformation mechanics during coal pillar of working face through.
Experimental Application of TorkBuster Torsion Compactor in Exploration Wells of Junggar Basin
Authors: Zhang Wei , Wang Hai Tao , Wang Guo Bin , Wang Yue Zhi
Published: June 2014

The northwestern margin of Junggar Basin is one of the most prolific petroliferous areas in Junggar Basin. While there exists many drilling problems, such as poor drillability, low drilling penetration rate (ROP) and long drilling cycle time due to the complex lithology and pressure system in low formation, big pressure change, several sets of coexisted formation pressure system of northwestern margin. In order to improve ROP, make better use of resources and solve these drilling problems, utilizing the TorkBuster Torsion Compactor (TorkBuster) with personalized PDC bit has been introduced in the northwestern margin. This paper presented the workings, technology characteristics and experimental application of TorkBuster in Ma13(M) well areas. The application results showed that the speedup effect of this drilling tool was obvious and drilling cycle time was shortened substantially. The technology has provided a fast and effective drilling method for Karamay Formation and Wuerhe Formation of Triassic in northwestern margin of Junggar Basin.
Fluid Inclusion Study on the Duobaoshan Porphyry Deposit and Sankuanggou Skarn Deposit, Heilongjiang, China
Authors: Wei Hao , Xu Jiu Hua , Zhang Guo Rui
Published: June 2014

In this paper we use new field data, fluid inclummsions, and table isotopes (O, H, and S) to refine the roles of the hydrothermal evolution, evaluate changes in the hydrothermal fluids of Duobaoshan porphyry Cu (Mo) deposit and Sankuanggou skarn Fe-Cu deposit. Four ore-forming stages are recognized at The Duobaoshan porphyry Cu (Mo) deposit. Fluid inclusions are abundant in quartz of various stages. Estimated trapping pressures for stage I, II, III are 110-160MPa, 58-80MPa, and 8-17MPa, corresponding trapping temperatures are 375-650°C, 310-350°C, 210-290°C. The δD and δ18O values of fluids indicate a evolution process from magmtic hydrothermal fluid to a mixing magmtic and meteoric fluid. The δ34S values of sulfides mainly suggest predominantly source of deep magma chamber.
Finite Element Simulation of Freezing Technology for Borehole Stability of Gas Drilling
Authors: Wang Zong Gang , Wei Zhen
Published: June 2014

The gas drilling mainly relies on the high speed air flow to carry the cuttings. The formation water or oil mixed with the cuttings and then they stick together in clumps after the formation water or oil went into the hole annulus, the clumps stick on the drill string and the borehole. The clumps may block the hole annulus and cause the stick or bury the drill string and many other complex accident. It could stop the cuttings from sticking with the liquid through freezing the formation fluid with the liquid nitrogen. And the natural geotechnical becomes into the frozen soil, and forms the temporary solid which is intact, high strength and low-permeability. This paper utilize the ANSYS finite element program to simulate the 3D model of borehole and hole wall to calculate the freezing radius of the steady state, heat loss, temperature of the freezing point and the conductive heat time of the unsteady state. And this study has provided the basis of the freezing technology for borehole stability of gas drilling.
Freezing Technology for Borehole Stability of Gas Drilling
Authors: Wang Zong Gang , Wei Zhen
Published: June 2014

The gas drilling mainly relies on the high speed air flow to carry the cuttings. The formation water or oil mixed with the cuttings and then they stick together in clumps after the formation water or oil went into the hole annulus, the clumps stick on the drill string and the borehole. The clumps may block the hole annulus and cause the stick or bury the drill string and many other complex accident. It could stop the cuttings from sticking with the liquid through freezing the formation fluid with the liquid nitrogen. And the natural geotechnical becomes into the frozen soil, and forms the temporary solid which is intact, high strength and low-permeability. This technology could achieve the purpose of strengthening the formation and reducing the fluid flow of the formation, and it greatly broadens the scope of application of gas drilling.
Analysis and Optimization of Small Expansion Natural Gas Liquefaction Process
Authors: Lu Yuan Wei , Liu Li Hua , Wu Yu Ting , Ma Chong Fang , Wang Jing Fu , Zhou Long Long
Published: June 2014

In order to develop small-scale natural gas liquefaction equipment, a small expansion natural gas liquefaction process was designed, which was based on the technical parameters of the single screw compressor and expander developed by Beijing University of Technology. The effect of the key parameters on the natural gas liquefaction rate and specific power consumption was simulated and optimized. The results showed that the liquefaction rate of the process can reach 100% and the specific power consumption was relatively low under the optimal operation conditions. These research results can provide theoretical basis for the design of small-scale natural gas liquefaction equipment.
Logging Evaluation Method and its Application for Measuring the Total Organic Carbon Content in Shale
Authors: Wang Zhi Feng , Zhang Yuan Fu , Zhang Hai Bo , Meng Qing Zhai
Published: June 2014

The acquisition of the total organic carbon (TOC) content mainly relies on the geochemical analysis and logging data. Due to geochemical analysis is restricted by coring and experimental analysis, so it is difficult to get the continuous TOC data. Logging evaluation method for measuring TOC is very important for shale gas exploration. This paper presents a logging evaluation method that the shale is segmented according to sedimentary structures. Sedimentary structures were recognized by core, thin section and scanning electron microscope. Taking Wufeng-Longmaxi Formation, Silurian, Muai Syncline Belt, south of Sichuan Basin as research object, the shale is divided into three kinds: massive mudstone, unobvious laminated mudstone, and laminated mudstone. TOC within each mudstone are calculated using GR, resistivity and AC logging data, and an ideal result is achieved. This method is more efficient, faster and the vertical resolution is higher than △logR method.
Petrological Characteristics Research of Denglouku Formation Reservoir in Changling Fault Depression, Southern Part of Songliao Basin
Authors: Xue Hui Ming , Zhang Yun Feng , Yu Wan Ji
Published: June 2014

We analyzed the petrology characteristics of Denglouku formation reservoir in Changling fault depression, by 47 ordinary thin sections, 42 thin casting sections, 30 scanning electron microscopy samples and 19 cathodoluminescent samples. The results show that: the main rock types are feldspar debris sandstone and debris feldspar sandstone. The reservoir consists of low compositional maturity, relatively poor psephicity, well graded, high rock debris content. It suggests that the sedimentary environment has strong energy, the moving distance is short, the study area is near the mother rock zone. From north to south, granularity gets coarse. The main cement types are carbonate and argillaceous.
Application and Analysis of V.A.SuLin’s Theory of Oilfield Water
Authors: Huang Guang Qing , Fan Hong Fu , Wu Chao
Published: June 2014

Oilfield water is a complex chemical system whose classification is an important proposition of oilfield water geochemistry. This paper makes some analysis and discussion according to the V.A.SuLin’s theory using the data of some oilfield water samples. The result shows that the theory has some limitations in the classification of oilfield water and should be combined with the actual situation of oilfield development.
Automatic Fracture Identification Using Ant Tracking in Tahe Oilfield
Authors: Hu Jia Le , Kang Zhi Hong , Yuan Lu Lu
Published: June 2014

There were many ways for the identification of 3D seismic data of fracture system,and the traditional manual fracture identification was time consuming.The automatic ant tracking technique for fractures based on ant colony optimization (ACO) is a new method developed in recent years.It displays clearly the distribution of fracture systems and faults.Compared to manual interpretation which only identifys a small amount of very obvious fractures and faults,the new method is more objective,and more clear, accurate and intuitive.This paper proposed the research idea of taking Tahe oilfield 4th block as an example,to identify fractures and to set up the fracture model.The model can display 3D structure shape of the reservoir and have achieved good results.
Stress Sensitivity of Low Permeable and Water-Bearing Gas Reservoir without Gas Slippage Effect
Authors: Yan Jian , Liang Xiao Bing , Wu Qian , Guo Qing
Published: June 2014

Because of the gas slippage, the testing methods of stress sensitivity for gas reservoir should be different from that for oil reservoir. This text adopts the method that imposing back pressure on the outlet of testing core to weaken the gas slippage effect and tests the stress sensitivity of low permeability gas reservoirs, then analyzes the influence of permeability and water saturation on stress sensitivity. The results show that: low permeable and water-bearing gas reservoirs have strong stress sensitivity; the testing permeability has the power function relationship with net stress, compared to the exponential function, the fitting correlation coefficient is larger and more suited to the actual; the lower the permeability is and the higher water saturation is, the stronger the stress sensitivity is. The production of gas well is affected when considering the stress sensitivity, so the pressure dropping rate should be reasonable when low permeable gas reservoirs are developed. The results provide theoretical references for analyzing the well production and numerical simulation.
Impact Evaluation and Effect of Surfactant to Oil Displacement System
Authors: Zhang Hong Jun , Zheng Meng
Published: June 2014

In this paper, the influence of mahogany sulfonate and nonionic surfactant to oil displacement system viscosity is evaluated. The effect of the two kinds of surfactants was compared by oil displacement test, the results showed that nonionic surfactant not only had no effect on oil displacement system viscosity, but also had a good oil displacement effect.
Genesis and Spatial Distribution of Interlayer in Tight Gas Reservoirs: A Case Study from the Lower Cretaceous Sandstones, Songliao Basin, China
Authors: Yu Xiao Yu , Zhang Peng Hui , Zhang Guo Yi , Ding Fang , Meng Ning Ning , Li Jing Zhe , Zhang Ming
Published: June 2014

Interlayer is a kind of rock body that reflects the seepage barrier in the reservoir sandstones. As the interlayer playing a blocking role of hydrocarbon accumulation, we can better understand the characteristics of the reservoir heterogeneity through the analysis of the causes and spatial distribution of the interlayer. Empirically, identification of four types of interlayer, including muddy interlayer, calcium interlayer, physical layer, and indistinguishable interlayer, contributes to effective production of tight gas sandstones. Each category of interlayer has a separate characteristic of the lithology and logging curves. Identifying interlayer provides a way to analyzing spatial distribution of interlayer in the tight gas field. 2-D and 3-D geological models corresponding to the distribution of interlayer can be able to establish to characterize distribution variations within the reservoirs, which show the space matching relation serving for the tight gas production.
Structural Interpretation of Changling Gas Field, Northeast China
Authors: Yu Xiao Yu , Yuan Yong , Zhang Jin Liang , Wang Yuan Yuan , Lv Xin
Published: June 2014

Use techniques of coherence body, dip body, azimuth body, variance body and ants body to implement the fracture structure in the study area and study the fault distribution. Fine make logging synthetic seismogram in the study area, compare multi-well jointly, use the time-frequency analysis technology combined with core and logging data to track to explain the target layers.Make the velocity model and give the structure diagram of target layers by time-depth conversionon the basis of full three-dimensional interpretation and high-precision synthetic seismogram.
The Effect of Stress-Sensitivity on Gas well Production in Volcanic Gas Reservoirs
Authors: Qing Tian , Liu Peng Cheng , Qi Zong Yao
Published: June 2014

During the volcanic gas reservoirs development, stress-sensitivity will result in permeability decline with formation pressure drop, lowering gas production and affecting the whole gas reservoirs development program. On the basis of the stress-sensitivity experiments on volcanic rocks, the characteristic of stress-sensitivity in volcanic reservoirs is analyzed. On this basis, this paper studies the prediction method of gas well productivity in volcanic gas reservoirs with stress-sensitivity, and establishes the mathematical model of constant pressure production in volcanic gas reservoirs. The results show that the permeability of volcanic rocks has an exponential relationship with effective stress. The stronger the stress-sensitivity is, the more the gas well productivity losses under the same conditions. And the reservoir stress-sensitivity will increase the degree of gas well unsteady production decline.
Sedimentary Microfacies Study of Putaohua Oil Layer in the East of Pubei Oilfield
Authors: Hao Ze Han , Zhang Yun Feng
Published: June 2014

The fault segmentation of blank area in the east of Pubei Oilfield is strong, and the distribution of oil and water is complex. In view of this kind of situation, we did sedimentary microfacies research in study area. First, we established isochronous stratigraphic framework of the east of Putaohua oil layer by core and logging data ,we also established six well logging facies models, including main underwater distributary channel,underwater distributary channel,edge of underwater distributary channel,main sand sheet,sand sheet and bay mud between distributary channels;Secondly, we described the sedimentary microfacies of development area, summarized the evolution of sand and sedimentary microfacies characteristics of Putaohua oil layer; Finally, on the basis of the above work, we drew the sedimentary microfacies of study area. The study provides geological basis for the next step of exploration and development in oil field.
Study and Evaluation on Physical and Mechanical Properties of 40 Kinds of Wood Species in Zhejiang Province (China)
Authors: Xu Man Ping , Guo Fei Yan , Zhou Kan Kan , Yang Wei Ming
Published: June 2014

Physical and mechanical properties of 40 kinds of typical wood species in Zhejiang province were studied in this experiment. Density, shrinkage rate, modulus of rupture,bending strength, compression strength, shear strength and hardness were measured and wood species were classified and evaluated by clustering analysis mehtod (CA) combined with membership function (MF) comprehensive evaluation according to these properties. The results showed that the two analysis methods achieved the similar results when screening first class wood which can be conclued that among the 40 kinds of species Quercus fabri, Dalbergia hupeana Cyclobalanopsis glauca, Lithocarpus harlandii and Lagerstroemia indica were the excellent quality. In the mean while the two analysis methods got the similar conclusion that wood properties of Pterocarya stenoptera were the worest as well. In addation, Camptotheca acuminata and Alniphyllum fortune according to CA and Ilex rotunda, and Cyclocarya paliurus according to MF were also the worest qulaity. The study provided powerful references for wood processing, application and directional cultivation of indigenous tree species in Zhejiang.
Researh of Geothermal Resources and Prediction of Deep Geothermal Temperature in High-Tech Zone of Baotou City
Authors: Song Yu Chen , Liu Zhan Ning , Meng Hai Dong
Published: June 2014

In the background of low-carbon economy, the development of geothermal resources has many benefits, which will promote energy conservation, help to improve the energy consumption structure. The occurrence state of geothermal resources in high-tech zone of Baotou is described in detail, including geothermal storage layer, geothermal storage cap rock, geothermal channel and heat, and its hydrogeochemical characteristics. The genetic mechanism of geothermal resources is analyzed. The temperature of deep geothermal is predicted. The prediction is proved that it has a certain reliability.
Research on Wood Uses in u.s.a
Authors: Clement Francis Deng , Zhang Hong , Ladu John Leju Celestino
Published: June 2014

Research confirmed 23.5% of the energy derived from wood (wood energy) in the U.S. reading indicates proven in interval of 30 decades up to 2009 and affirmed residential wood energy consumption has declined by an average 3% per year in response to technological progress, urbanization, accessibility of non-wood energy, and other factors associated with a time trend such as increasing income per capita and number of houses. But the rising price of non-wood energy has had a positive effect on the consumption and offset the downward trend effect in the last decade.
Measurement on Forest Ecological Benefits in Forest Industry Group of Heilongjiang Province
Authors: Bi Lei , Li Chang Sheng
Published: June 2014

The integral diffusion models were established using standardized ecological benefit dependent variable, regional independent variables and stand independent variables. Three important parameters including effective area coefficient, market approximation coefficient and conversion factors (According to the law of substitute goods, State Statistical Yearbook gets a reasonable price of the substitute goods and converts physical forest ecological benefit volume to money factors.). Then forest ecological benefits including water reservation, soil fixation, fertility reservation, C02 absorption, atmosphere purify, microclimate improvement, wind sand suppression, flood and draught mitigation, forest recreation, animal protection, plant protection and noise elimination n State-owned Forest Region in Heilongjiang Province were calculated. The total ecological benefit in study area was 17.91 billions RMB ¥.
Coupling Conversion of 1-butylene and Methanol to Propylene over Superfine HZSM-5 Catalysts
Authors: Liu Xi Ling , Bai Ting , Wang Feng , Qu Wen Ting , Zhang Xin
Published: June 2014

Superfine HZSM-5 zeolites were synthesized by different methods, and their catalytic performance for the coupling conversion of methanol and 1-butylene to propylene was investigated. In addition, these catalysts were characterized by XRD, SEM, N2 isothermal adsorption-desorption, and NH3-TPD. Z5-A catalyst showed the highest reactivity among these catalysts and could keep good stability, due to its superfine particle size, large surface area and proper acidity.
The Research on Influence Factors and Control of Hydrogen Sulfide during Steam Drive
Authors: Yan Feng
Published: June 2014

This project carries out the research on influence factors of wells producing hydrogen sulfide in connection with the actual situation of producing hydrogen sulfide in Qi-40 steam drive process. Experimental studies have shown that: A. temperature is the main external factors of produce hydrogen sulfide, It will produce hydrogen sulfide when temperature is above 100°C, hydrogen sulfide content increase about 300ppm in average when the temperature increase per 20°C; hydrogen sulfide content will be in the greatest increase when temperature at the range of 160°C~180°C; the rate of increase in the levels of hydrogen sulfide will significantly reduce when temperature above 180 °C.B. Adding Chemical agent with surface activity can inhibit the release of hydrogen sulfide. C. Adding acid chemical agent will make the content of hydrogen sulfide increase. The experimental study also investigated hydrogen sulfide prevention measures.
Study in Kinetics of Barium Sulfate Crystallization Process of Oilfield Injection
Authors: Yang Bei , Zhang Xiang , Shi Xin Ge , Guo Jia Neng , Wang Qi Wei , Gao Ge , Liu Xin , Lin Jin Zhi , Jin Hai Bo
Published: June 2014

With conductivity measurement in different concentrations of barium chloride, sodium sulfate, sodium chloride solution, their concentration-conductivity equation is obtained. Through mathematical conversion, the relation between sulfuric acid root ion in the solution, barium ion conductivity and the concentration is showed as: X=4.1744×10-6Y-6.8544×10-5,which is used to reflect the undissolved salt barium sulfate crystallization in the solution. Conductivity online measuring device is established, which can Intermittently test barium chloride, sodium sulfate solution of different concentrations, and detect the change of electrical conductivity in the process of crystallization of homogeneous barium sulfate in real-time. the different stages of crystallization process is determined by analysis of the conductivity curve. Through data processing to concert concentration into conductivity, so that the kinetic equation of barium sulfate crystallization process are obtained.
Experimental Research on Influencing Factors of Melting Reduction for High-Phosphorus Titanomagnetite Pellets
Authors: Li Lin , Mu Jun Yu , Meng Xiang Long , Li Yong Qi , Peng Jie
Published: June 2014

Reduction of high-phosphorus titanomagnetite was studied for future comprehensive utilization of resource. Experimental temperature (T), burden alkalinity (CaO/SiO2) and carbon-oxygen ratio (C/O) had an influence on the content of [P] and [S] in hot metal. Highest dephosphorization rate in hot metal appeared at C/O=1, high temperature was beneficial to desulphurization, but not for dephosphorization. High CaO/SiO2may decrease the content of [P] and [S]. C/O and CaO/SiO2had great influence on the content of [P] and [S] in hot metal.
Characteristics and Evolution of Volcanic Reservoir Space in Yingshan Fault Depression
Authors: Liu Wei Fu , Liu Shuang Long , Sun Li Xin
Published: June 2014

The main accumulating rock types of Yingshan Fault Depression in Songliao Basin were various volcanic lava and volcanic breccias, and the accumulating spaces included primary and secondary two kinds. Though the primary accumulating spaces took the small proportion, they provided favorable conditions for paulopost reconstruction. The development and evolution of volcanic rock accumulating spaces can be divided into four stages. The first is the forming stage of primary accumulation spaces, and the secondary is weathering and leaching stage. These two stages are dominated by construction. The third is shallow burying and structural fracture developing stage, with coexisting of construction and destruction, but dominated by construction. The fourth is deep burying stage, which is dominated by destruction.
Experiment Study of Effects of Coal Slurry Properties on Particle Settling Velocity Based on SPSS Software
Authors: Wang Jian Zhong , Tan Li
Published: June 2014

In order to explore the influence of coal slurry properties on particle settling velocity, orthogonal tests with four factors in five levels concerning coal slurry concentration, proportion of -45μm fine content, pH value and water hardness were conducted without consideration of interactions using SPSS 19.0 software with coal slurry suffering difficult to sediment problem from Jisan coal preparation plant on the basis of a clear knowledge of slime mineral composition there. Furthermore, an introduction of SPSS’s application in design and analysis of mineral processing experiment is made in this paper.
The Effect of Different Collectors on Oxidised Copper Ores Flotation
Authors: Jiang Tai Guo , Fang Jian Jun , Zhang Tie Min , Wang Shan , Mao Ying Bo
Published: June 2014

For a refractory oxidised copper ores in Sichuan province, studing the different collectors on the influence of oxidised copper ores sulfide flotation behavior. The results showed that: the collecting performance of sodium isoamylxanthate was better. When the dosage of sodium isoamylxanthate was 550g/t, the copper concentrate grade of 19.09% could be obtained and recovery was 82.65% under the appropriate process conditions in the closed circuit experiment.
The Influence of pH and Ferrous Ions on Chalcopyrite Dissolution in Chemical Leaching Chalcopyrite
Authors: Mo Xiao Lan , Wen Jian Kang , Bai Jing , Chen Bo Wei , Wu Biao
Published: June 2014

This paper studied the influence of pH, temperature and particle size on the chemical leaching of chalcopyrite. The results show that H+is not only responsible for the hydrolysis and precipitation of ferric ion as jarosite, but also related directly to chalcopyrite dissolution. The mechanism of chalcopyrite leaching is as follows: the first stage is H+attacking valence band and electron transition during oxidation, which needs a great deal of the energy to the system. The second stage is the transport of electrons from the chalcopyrite surface to the dissolved oxygen. However, the limiting step changes into diffusion control from chemical control when the elemental sulphur film formed, which obstructs transport of electrons.
Study on Beneficiation of a Low Magnesium Phosphate Weathering Ore from Tian Ning
Authors: Guo Yong Jie , Du Ling Pan , Zhong Jin , Chen Ci Yun
Published: June 2014

Weathered phosphate ore is an important part of phosphate ore resources, it contains a huge reserves of this resources in Yunnan regions, and its reserves over 200 million tons. With the gradual consumption of the rich phosphate ore resources, recycling for weathering phosphate ore is receiving more and more people's attention. In this study, using Tian Ning weathered low magnesium phosphate ore which from Yunnan Dianchi Lake area as the study object, and based on its ore properties established a experimental program of pre-desliming with cyclone and then flotation. The P2O5 loss rate under 20% on the desliming operation, then using a single positive flotation process at room temperature, ultimately obtained a test indicators of phosphate concentrate of P2O5 grade of 29.98% and P2O5 recovery of 95.02%, which is a foundation of development and application for Tian Ning weathering phosphate ore.
Analysis of Electrochemical Mechanism of Electrolyte and Coal
Authors: Zhang Hong Bo , Li Yong Sheng , Ning Ting Ting , Zhu Ying Ying
Published: June 2014

In order to study the electrochemical performance of coal in the HCL electrolyte system, researchers prepared the chemically modified carbon paste electrode, measured the volt-ampere curves and Tafel curves of the samples and analyzed the mechanism of the electrochemically catalysis of oxidation of coal. The studies indicate that what occurs to the coal sample in the process of electrolytic sulfur removing is a quasi-reversible diffusion controlled process. In the beginning of the sulfur removing, the rate of electrolytic corrosion is fast, in which oxidation on the anode denominates, and the cathode plays a role of reduction in the late period.
Mechanism Research on Electrochemical Catalytic Oxidation Desulfurization of High Sulfur Coal
Authors: Zhang Hong Bo , Su Chang Hu , Zhu Ying Ying
Published: June 2014

Electrochemical desulfurization is a mild chemical desulfurization method. This paper introduces the electrochemical catalytic oxidation method which is used to process High Sulfur Coal samples under acidic condition. Study tells that during the processing of electrochemical catalytic oxidation desulfurization ,pyrite and organic sulfur in coal are oxidized and converted into water soluble sulfur compounds by some active oxygen and other oxidizing agent or high valence ions which are produced on the surface of electrolytic anode.After analyzing the experiments ,another conclusion that the desulfurization process is faster for the added catalyst ion also involving in the reaction is reached.
Research of Cutting Slop Process by Strength Reduction FDM
Authors: Yan Li , Fu Hou Li
Published: June 2014

To the problem of slope stability analysis and slope-cutting of rock slope, the traditional method Limit Equilibrium Method has many shortcomings as assuming the position and shape of the slip plane first. However, with the new theory of Strength Reduction Method, the problem can be easily solved. By selecting the appropriate criterion of instability and failure of sliding surface of slope, the Strength Reduction Method simulates the gradual development process of slope-cutting. By this method, we can simulate the failure process of slope and obtain the safety factors and slipping surface. This paper put forward the process of cutting slop by Strength Reduction FDM (Finite Difference Method) which had new insights into the choice of instability criterion, flow rule and slip plane.
A New Experimental Evaluation Technology for Foaming Agent in High Temperature and High Pressure Formation
Authors: Cao Guang Qiang , Wang Yun , Li Nan
Published: June 2014

Foaming deliquification is one of the most widely used technologies in the development of water production gas field. The key of this technology is the experimental optimization or develop the foaming agent suitable for gas field. With the development of a large number of high temperature and high pressure gas field, foam experimental evaluation methods used at present can not satisfy the temperature range of high temperature and high pressure evaluation requirements, in this case, used the Ross-Miles foam evaluation method as the foundation, built a new experimental evaluation method for foaming agent. Through an example, analyzes the influence of temperature and pressure on the foaming agent performance.
The Control of Slope Gradient on Sedimentation by Taking Sangonghe Formation in Eastern Junggar Basin as an Example
Authors: Wan Li , Yu Xing He , Li Sheng Li , Xu Hui Yuan
Published: June 2014

According to the cores, outcrops, seismic data and wire-line logs, the main influences exerted by slope gradient on sedimentation of lacustrine delta are as follows: 6 kinds of microfacies assemblages are recognized in the elaborate development area and 3 sequences of these assemblages are identified in the well correlation along provenance; the bars-rich delta front is developed in steep slope while the river-rich delta front in gentle slope. The exploration and development experience indicate the reservoirs formed in steep area are favorable for well-connected sandbodies and high sand-bearing ratios.
Dynamic Disaster Forecasting Technology of the Island Working Face in Outburst Coal Seam
Authors: Shen Rong Xi , Wang En Yuan , Hu Shao Bin , Feng Jun Jun
Published: June 2014

Coal and gas outburst and rock burst are the main threats of the island working face in outburst coal seam. According to the characteristic of No. 11061 island face in outburst coal seam, Liangbei coal mine, China, the dynamic disaster mechanism of island working face in outburst coal seam was analyzed. Based on the monitor of gas concentration and electromagnetic radiation and hydraulic supports resistance in the 11061 island face, the comprehensive forecasting technology of the island face in outburst coal seam was built, then the critical values of gas concentration and electromagnetic radiation and hydraulic supports resistance are calculated by three-ratio method. Finally, the comprehensive forecasting technology is used in the island working face. The results show that the combined action of gas content and stress induces the dynamic disaster of the island working face in outburst coal seam, and the comprehensive forecasting technology can forecast accurately dynamic disaster in the 11061 island face, which has brought successful engineering experience and distinct economic benefit. It can improve significantly the mine production safety level to research the forecasting technology of the island working face in outburst coal seam.
Sandaozhuang Open-Pit Quality Block Modeling Based on Engineering Geological Profile
Authors: Sun Ying , Ma Shu Ai , Huang Lang , Zhou Huan Ming , Hu Dong Tao , Yang Zheng
Published: June 2014

Block model is the precondition of open-p
it mine
o
ptimization boundary design and mining design. In this paper
,
after studying the ore deposit model
that
using the optimization boundary,
p
ut forward
to
establish ore deposit
quality block
model based on the proposed
Sandaozhuang
engineering geological profile
. Using
prospecting line profile CAD drawings
that o
btained during the exploration phase, us
e
two-dimensional coordinate conversion three-dimensional coordinates, the profile boundary curve smoothing,
apply
D
elaunay triangulation and other technology to establish ore body contour model. Establish the ore body quality model based on the ore body contour model, use
i
nverse distance
weighted
method
in
geostatistics
for the
assignment
of
ore
body
quality model, get the
Sandaozhuang
open pit quality block model. And ba
sed
on this
to
estimate
the
reserves
,
lay the foundation for
the
follow
work
of
the mine.
Study of the Assessment Method for Risk Matrix in Large Mining Steel Structure Large Steel Structure
Authors: Bi Jia Mei
Published: June 2014

KONIAMBO project affiliated to the OFFSHORE OIL ENGINEERING CO., LTD is the world's first smelting plant using large modular construction and integration, which is the first integrated, modular building project with many potential risks .In this paper, project risk management system, control method and requirements were built based on risk matrix assessment method, potential risks in each stage and aspect were evaluated, controlled and managed,then risk management guarantee is provided for KONIAMBO project implementation.
Study on Influence of Rock Strength on Anchorage Performance of Resin Anchored Bolts
Authors: Hu Bin
Published: June 2014

Based on the introduction of the researches on the influence of the surrounding rock strength on the anchorage performance of resin anchored bolts at home and abroad, the numerical simulation was adopted to analyse anchorage system of single bolt support small-scale by using the finite difference program FLAC3D. The results showed that the stress distributions in resin capsules and surrounding rocks were different with the different strengths of surrounding rocks. The stresses in the surrounding rocks gradually decreased with the reduction of rock strength, but the plastic zone gradually expanded. On the basis, such technological approaches were brought forward to ensure support effect in the soft rock roadways by improving the materials and formulations of the resin capsules and increasing the support density and the anchorage length appropriately.
Study on Parameters of Gas Extraction in Spontaneous Combustion in Goaf and Comprehensive Prevention Process of Gas in Hongmiao Mine
Authors: Li Xiang
Published: June 2014

Aimed at the comprehensive management of gas and spontaneous combustion in goaf of 5-2S fully mechanized caving face in five district of Hongmiao coal mine. The impacts on the air flow field and concentration distribution of the goaf are analyzed, that the changes of gas drainage value, and the location of drainage outlet as well as injection capacity of nitrogen. The results show that, the larger of the volume of gas drainage, the greater risk of gas explosion and spontaneous combustion. Appropriate increasing gas drainage volume is used to ensure the safety of the working face, with injecting nitrogen or accelerating the speed of face promote. The drainage outlet location should also be in an appropriate range (5~25 m) after the break line of the face. The result has important guiding significance in goaf of inflammable thick seam of gas mine, on the selection of gas extraction parameters, which is reasonable to prevent both gas explosion accident and spontaneous combustion caused by drainage excessive.
Analysis of Diameter of the Bearing Push-Extend Reamed in the Size of the Influence of the PEMUR Pile Bearing Capacity of Single Pile
Authors: Qian Yong Mei , Yang Da Jun , Liu Xiao Long
Published: June 2014

As the change of diameter of the bearing push-extend reamed in the size, failure pattern of soil mass around the PEMUR pile has changes. Based on the finite element method, simulated analysis has been conducted about normal stress and shear stress of soil around pile under different plate diameter size, which has qualitatively identified that the PEMUR pile bearing capacity of single pile has influence on disc diameter, application for this type of pile design provides a theoretical basis.
Analysis of Weighting over Great Extent upon Fully Mechanized Coal Face with Non-Hard Roof Based on Measured Data
Authors: Zhu Tao
Published: June 2014

Due to the influence of geology, mining technology, supporting strength, fully mechanized coal face sometimes would happen large area caving and weighting over great extent, causing casualties. Theoretical and experimental analysis shows, not only hard roof could happen weighting over great extent, but softer roof upon long wall face could happen, the only difference was the location of disaster and the failure forms. The paper analyzed weighting over great extent upon fully mechanized coal face with non-hard roof based on measured data. The results show that, the important factors of support break-off were the setting load of hydraulic support, drawing speed of working face and support efficiency, and it would achieve support break-off warning help to analyze the open rates of safety valve.
Fabrication Method of Mems Based Clamped-Clamped Resonant Magnetometer
Authors: Ghalehbeygi Omid Tayefeh , Trabzon Levent , Francis Laurent , Kizil Huseyin
Published: June 2014

In this paper we present fabrication steps for manufacturing MEMS based magnetometer which is actuated by Lorentz force in the middle point of beam which has been fixed from both two edges (Clamped - Clamped). We utilized two different process sequences in order to fabricate microsystems properly. The structures were first fabricated on bulk Si-wafer and the fabrication of these sensors was characterized by built in stress in the beam and etching methods in the processes. The second approach was performed on SOI Si-wafer. Two fabrication routes are compared in terms of working MEMS structures. The microstructures are manufactured successfully by a process sequence based on SOI-Si wafer.