Effects of Light Oil on Rheology Behavior of Produced Mixture
GU Lin-jie, HUANG Qi-yu,MA Gui-xia, GAO Yan
2011, 31 (1): 1-4. DOI:10.3696/j.issn.1672-6952.2011.01.001
Abstract ( ) PDF ( 2154KB ) ( ) 　　
In water-cut conventional heavy oil production process, oil and water exist synchronously in well hole and the viscosity of oil/water mixture cannot be tested accurately by conventional coaxial cylinder rotational viscometer. To solve this problem, the agitator is used to build the viscosity calculated mode. The effects of light oil proportion on viscosity of produced mixture have been studied through simulated experiment of well bore temperature field. The oil-water mixture will show the trends of formation of W/O emulsion when augmenting light oil proportion in high water cut well and its viscosity will emerge peak value. The viscosity reducing rate will reach over 99% or more when augmenting light oil mass of water-free heavy oil well, lower temperature will lead to better performance of viscosity decrease.
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Optimized Nitrogen Assisting Steam Huff and Puff Injecting Parameters Based on SVM
HU Gang, LI Zhao-min, LI Peng-hua, ZHANG Chao
2011, 31 (1): 5-8. DOI:10.3696/j.issn.1672-6952.2011.01.002
Abstract ( ) PDF ( 2387KB ) ( ) 　　
 
SVM can find intrinsic relation between each variable by using a few samples. Some numerical simulating results in prepared conditions by SVM were studied, and get common rules between those factors. Optimizing injecting parameters in each kind of application conditions by calling studied results. This method is easily operated and its result reliable.
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Iodiometry-Spectrophotometric Determination of Bromate in Water
LI Xiu-ping, ZHAO Rong-xiang, SHEN Chun-yu
2011, 31 (1): 9-12. DOI:10.3696/j.issn.1672-6952.2011.01.003
Abstract ( ) PDF ( 1788KB ) ( ) 　　
Ultraviolet-visible spectrophotometry was used to determinate the content of bromate in mineral water and drinking water. The effect of reaction time, dosage of hydrochloric acid, dosage of potassium iodide, working curve and recovery were studied, and the content of bromate in mineral water and drinking water was tested ]in absence of the light as 10.33 and 9.33 μg/L, respectively. The recovery of mineral water is 96.03%~105.59%, while the recovery of drinking water is 95.89%~96.12%. The precision and detection limit of this method are 0.36 and 0.108, respectively. 
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Preparation and Adsorption Performance of q-CS/TEOS Hybrid Membranes
WANG Rui, FENG Rui-jiang, WANG Ji-lin, AO Min
2011, 31 (1): 13-16. DOI:10.3696/j.issn.1672-6952.2011.01.004
Abstract ( ) PDF ( 2298KB ) ( ) 　　
 
A series of hybrid membranes composed of quaternized chitosan (q-CS) and tetraethoxysilane (TEOS) were prepared by sol-gel method，taking q-CS and the TEOS as organic and inorganic component respectively. The structure of the hybrid membranes was investigated by FT-IR. The adsorption performance of the membranes for Cr(Ⅵ) ions from aqueous solution was also studied. The effect of adsorption time, the pH value of solution and temperature of the adsorption on adsorption results were studied and show that the suitable membrane is composed of 38wt% TEOS, and the optimum adsorption conditions were carried out at 35 ℃ for 180 minutes with pH value of 5.0～8.0.
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Complex Deacidification Solvents of Straight-Run Diesel
YANG Li-na, LIU Si-xiu
2011, 31 (1): 17-20. DOI:10.3696/j.issn.1672-6952.2011.01.005
Abstract ( ) PDF ( 1880KB ) ( ) 　　
The deacidification of Liaohe straight-run diesel with combination solvent in the alcohol-ammonia process was carried out. Effects of solvent composition, demulsifier type and amount and the operating conditions on the deacidification ratio and the yields of diesel were all studied. The suitable mass composition of solvent mixture is 5% NH₃·H₂O, 50% ethanol, 45% water and 0.4 μL NP6 demulsifier for 20 mL diesel. Operating conditions are as followings, the volume ratio of solvent to diesel 0.2, the treatment temperature 50 ℃, the processing time 60 seconds and the phase separation time is 20 minutes. The acid value of the diesel after deacidification comes up to the standard GB/T264-83 (acid value<5 mg(KOH)/(100 mL)). The solvent can be recycled by distillation and no waste generates, the naphthenic acid can be obtained by heating the distillation residues.
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Separation of p-Aminophenol From Raney Nickel Catalyst by Ceramic Membrane
JIN Shan
2011, 31 (1): 21-24. DOI:10.3696/j.issn.1672-6952.2011.01.006
Abstract ( ) PDF ( 3821KB ) ( ) 　　
Clarification of p-aminophenol feed containing Raney nickel catalyst by micro-filtration (MF) of ceramic membrane has been investigated. The experiments in the lab confirmed filtration the p-aminophenol feed by the ceramic membrane with pore size of 0.2 μm. The component of the cake and fouled membrane in pilot tests were analyzed and found that the pollutants were mainly Raney nickel catalyst. In the industrial application, an effective cleaning method to recover the membrane flux was suggested as follows: firstly washing with circulate solution of alcohol-water for 10 minutes; then rinsing the rig with 1vol% NaOH solution for 20 minutes; and 3% nitric acid solution for 60 minutes; finally industrial soft water for 60 minutes. The above cleaning operations were all performed at 100 ℃. The average permeate flux of a long running in the plant was 400 L/(m²·h). The nickel content in the permeate liquid could not be determined by an atomic absorption spectrometry. So that in industrial conditions the Microfiltration of PAP suspension by a ceramic membrane is a reliable and efficient technology of the clarification.
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Effect of High Temperature Welding on Fatigue Life of 16MnR Joint
YANG Jun, SONG Tian-min, GUAN Jian-jun
2011, 31 (1): 25-27. DOI:10.3696/j.issn.1672-6952.2011.01.007
Abstract ( ) PDF ( 1040KB ) ( ) 　　
 
Welding residual stress test and fatigue life experiment on 16MnR specimens welded by high-temperature welding process were studied in this article. It was indicated that the process could decrease welding residual stress and increase fatigue life dramatically. The maximum of the longitudinal residual stress of specimens welded by high-temperature welding process at 750 ℃ and 850 ℃ were decreased by 55% and 68%, respectively, and the fatigue life of specimens welded by high-temperature welding process at 750 ℃ and 850 ℃ was decreased by 50% and 98%, respectively, as compared with those of the specimens welded by normal-temperature welding process. The reason for the advantages of the high-temperature welding process was analyzed, and demonstrated its feasibility.
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Influence of Hot Oil Pipeline Preheat Medium’s Flowing Speed on Preheat Time
LU Qin-li，MA Gui-yang
2011, 31 (1): 28-31. DOI:10.3696/j.issn.1672-6952.2011.01.008
Abstract ( ) PDF ( 3626KB ) ( ) 　　
 
In the process of oil pipelines’starting to convey, precise calculation and prediction of temperature field of the soil around pipelines and law of medium temperature in the pipelines changing with time are the key to identify the time of putting oil in and preheat medium totals. By water as preheat medium, and calculations of conducting heat’s numbers in the process of pipelines’ preheat under different flowing speed circumstances, it analyzed distributions of temperature field of the soil around preheat pipelines and temperature dropping along pipelines with distances, and finally get oil pipelines’ preheat conditions under flowing speed of various medium, which can help set corresponding oil-conveyed technique and attain the goal of safety and saving energy.
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Numerical Simulation of Effect of Shutdown on Mixed Oil for Batch Transportation of Cold and Hot Crude Oil
QIAN Yu, WU Ming, DU Ming-jun
2011, 31 (1): 36-39. DOI:10.3696/j.issn.1672-6952.2011.01.0010
Abstract ( ) PDF ( 2937KB ) ( ) 　　
 
Based on contaminated product theory, contaminated product control equation on cold and hot crude oil was established. Using FLUENT, concentration distribution of contaminated product before and after shutdown was analyzed by numerical calculation. So was the impact on the concentration of contaminated product. The results show that the trailing oil product keeps going under the influence of the inertia force after shutdown of the horizontal pipe section, which makes the mixed contamination plug grow with the shutdown time extended. The mixed section is longer if the crude oil from Russian is transported before the oil from DaQing. The mixed section of the vertical pipe is longer than that of the horizontal section. The length of the mixed sections almost the same in both ways, but the concentration distribution of contaminated product is more evenly in the former. The results match well with the actual, which can provide a theoretical guide to practical applications for projects.
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Experiment and Numerical Simulation of the Skin Effect Current Tracing in Super Heavy Oil Pipeline
ZHAO Qing-fu, WANG Yue, DU Ming-jun, FU Xiao-dong
2011, 31 (1): 40-42. DOI:10.3696/j.issn.1672-6952.2011.01.011
Abstract ( ) PDF ( 6823KB ) ( ) 　　
 
Using the skin effect current tracing techniques in super heavy oil pipeline in Liaohe oilfield as the background, the physical model and mathematical model of the skin effect current tracing in super heavy oil pipeline was set up, and indoor experiment and numerical simulation method was used to analyze the skin effect current tracing. Study results show that through the experiment and the simulation of a comparative analysis of the data, using software to make the simulation calculation is possible. Not only can you display the temperature distribution of super heavy oil pipeline, but also made a theoretical basis for the optimization of super heavy oil pipeline heat tracing effect and the safe shutdown time.
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Embedded Industry Controller Design Based on ARM9
SHEN Qing-bo，CAI Li-cong
2011, 31 (1): 43-46. DOI:10.3696/j.issn.1672-6952.2011.01.012
Abstract ( ) PDF ( 1813KB ) ( ) 　　
 
Embedded system is the speciality computer system, which the hardware and the application software are united. Because of the embedded system's outstanding characteristics of small size, high performance, low cost, and well practicality, it has been applied in many fields such as communication, industrial control. Embedded system has large market prospect. In this design, an embedded industry control system's hardware and software platform was designed based on S3C2410(arm9 core) and embedded linux. According to the requirements of industrial controllers, embedded linux operating system was used, and the embedded linux which has been explanted to the hardware platform. And the information collection server and remote monitoring client were designed. The test results show the function and the design of Embedded Industry Controller are feasible. Such as the system is running on the ARM linux platform，the web server，the function modules of the hardware platform run in good working states. It reaches the expected design goals.
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System for Oil Pipeline Leakage Detection and Locating Based on GSM
AO Wen-hua，WANG Tian-yu
2011, 31 (1): 47-49. DOI:10.3696/j.issn.1672-6952.2011.01.013
Abstract ( ) PDF ( 1069KB ) ( ) 　　
 
The large oil pipes were leak because of nature reason or artificial reason when these pipes were used for many years. This can not only cause energy dissipation and economic loss but also pollute the environment.The disadvantage of traditional detecting and locating method had lower accuracy, so that the location was inefficient. A leak detection and location system for oil pipe based on GSM was proposed. The hardware and software design were introduced in detail. The system has higher accuracy, and save large numbers of wired source .The system can realize oil pipe leak detection and location in no man land.
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Observers Design for a Class of Switched Singular Systems
YAO Cai-lian, WANG Tao
2011, 31 (1): 50-53. DOI:10.3696/j.issn.1672-6952.2011.01.014
Abstract ( ) PDF ( 1018KB ) ( ) 　　
 
The observer designing for a type of switched linear singular systems was discussed. Firstly, the sub-observer of the No.i sub-systems was designed, then when the No.i sub-systems was activated, the observer of switched singular systems can be formed by using the No.i sub-observer. If lingering time of full-dimensional observer whose each sub-system is checked is enough, state estimate error can converge to zero. In some case, state estimate error converge to zero by exponent under any switching.
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Realization of RBF Neural Network Based on LabVIEW
PANG Ming，QU Bao-cun
2011, 31 (1): 54-57. DOI:10.3696/j.issn.1672-6952.2011.01.015
Abstract ( ) PDF ( 5765KB ) ( ) 　　
 
LabVIEW is a graphical programming language, which is widely used by industry and laboratory. RBF neural network is a three layer feedforward network, which can effectively carry out non-linear model identification. Three types of RBF neural network calculation methods implemented in LabVIEW were introduced. It completed with LabVIEW RBF neural network program development and verification by the function approximation. The simulation results show that the RBF neural network combined with the virtual instrument development platform broaden its applications.
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A New Method of Parameter Two Dimension Assemblage Conceal in CAD
LAN Xiao-min
2011, 31 (1): 58-60. DOI:10.3696/j.issn.1672-6952.2011.01.016
Abstract ( ) PDF ( 983KB ) ( ) 　　
Introduced a new method to do parameter two dimension assemblage conceal with Wipeout in AutoCAD2004 or hereinbefore. By disperse scatter to dispose circle and arc, define hidden border line, define anonymous block graph, two dimension assemblage conceal with Wipeout was achieved. Compare with the methods of Boundary and Shademode to conceal, it don't affect to edit graph, and make use much simple, even achieve instant to conceal. It was realized by VisualLISP in AutoCAD.
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Chaos in a Three Species Food Chain
TENG Yong
2011, 31 (1): 61-63. DOI:10.3696/j.issn.1672-6952.2011.01.017
Abstract ( ) PDF ( 1946KB ) ( ) 　　
Chaos is an important research direction in ecology and the number of species in a chaotic state has complex movements in strange attractor. The three species ratio dependent food chain model with Holling Ⅱ functional response was established. The boundedness of species was obtained by differential inequality. The quantitative analysis of the three species food chain model was investigated by numerical simulations and the existence of chaotic dynamic was studied by the bifurcation diagrams. The strange attractor was obtained for suitable choice of parametric values and is existence via double periods. The appearance of chaos in this model suggests that chaotic dynamics may be common in natural food webs.
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Symplectic Geometry Characterization of Self-Adjoint Domains for Symmetric Differential Operators in Direct Sum Spaces(V)
WANG Zhi-jing
2011, 31 (1): 64-66. DOI:10.3696/j.issn.1672-6952.2011.01.018
Abstract ( ) PDF ( 1030KB ) ( ) 　　
The characterization of self-adjoint domains for symmetric differential operators with interior singular points in the direct sum spaces was investigated. By constructing different quotient spaces, using the method of symplectic geometry. The self-adjoint extensions of symmetric differential operators in the direct sum spaces for the different deficiency indices at (1,1)singular points was studied. The classification and description of complete Lagrangian submanifold that correspond with self-adjoint domains of second order differential operators were given.
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Molecular Dynamics Simulation of Homogeneous Epitaxial Growth on Groove-Shaped Substrate of Cu
ZHAO Qiang，ZHAO Qian，QI Yang
2011, 31 (1): 67-71. DOI:10.3696/j.issn.1672-6952.2011.01.019
Abstract ( ) PDF ( 8984KB ) ( ) 　　
 
Application of molecular dynamics simulation in different engraved with "deep / wide" for the rectangular cross-section groove and the Cu substrate on the epitaxial growth process of homogeneous using embedded-atom method model among atoms (EAM). Simulation results show that the "depth/width" of the groove and deposition of particles to the incident angle θ of the grain boundary and V → / V ↑influence, with the incident θ can be increased with the increase of it, with the incident V → / V ↑ can be decreased; When the temperature is 1 000 K, the "depth / width" is 1/2, a better film can not be formed, thin film epitaxial growth direction of the surface of all vertical. When the "depth / width" is 1/1, the incident can be formed at 10 eV better film.
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Symplectic Geometry Characterization of Self-Adjoint Domainsfor J-Symmetric Differential Operators (I)
JIANG Feng-li, ZHAO Xiao-ying
2011, 31 (1): 72-75. DOI:10.3696/j.issn.1672-6952.2011.01.020
Abstract ( ) PDF ( 1047KB ) ( ) 　　
 
The characterization of self-adjoint domains for symmetric differential operators was investigated, By constructing different quotient spaces, using the method of symplectic geometry, the self-adjoint extensions of symmetric differential operators in the direct sum spaces for the different deficiency indices at (2,2) singular points was studied. The classification and description of complete J- Lagrangian submanifold that correspond with self-adjoint domains of second order differential operators were given.
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Quality of Fuzzy Number Intuitionistic Fuzzy Group
FAN Chuan-qiang
2011, 31 (1): 76-78. DOI:10.3696/j.issn.1672-6952.2011.01.021
Abstract ( ) PDF ( 1045KB ) ( ) 　　
 
The fuzzy number intuitionistic fuzzy group was defined and its some operations through fuzzy number intuitionistic set was discussed, then studied its some properties and gave its prove. Then in the sense of homomorphism between two nonempty limited classical groups, it proved that the image of this kind of fuzzy number intuitionistic fuzzy group also is a fuzzy number intuitionistic fuzzy group.
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Gray Prediction and Analysis Impact Factors on Liaoning Rural Consumption Expenditure
LIU Pei-lu
2011, 31 (1): 79-83. DOI:10.3696/j.issn.1672-6952.2011.01.022
Abstract ( ) PDF ( 1026KB ) ( ) 　　
 
The subjects of this article are the per-capita living expenses of the rural in Liaoning province from 2001 to 2009. Apply grey system theory to establish a model of the GM(1,1), which predicts the tendency of the coming four years per-capita consumption expenditure of the Liaoning rural, and use application of grey correlation assessment method for human resource management to analyze the relevant factors and the degree sequence which affect eight kind of factors of consumption expenditures. Forecast and the analysis results show that the coming four years per-capita consumption expenditure of the Liaoning rural is still at a high speed of growth, the average growth is expected to reach 14.4%. The three major factors which are related to consumption expenditure are clothes, education, culture and entertainment services, and that of household equipment, supplies and services. This fully demonstrates that the food consumption which is used for basic necessities is decreasing and the people's consumption trends are transferred from chasing quantity expansion to quality.
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Petroleum Engineering Enterprises Procurement Strategy
TAN Zhe
2011, 31 (1): 84-87. DOI:10.3696/j.issn.1672-6952.2011.01.023
Abstract ( ) PDF ( 978KB ) ( ) 　　
 
Based on counterfeiting phenomenal petroleum engineering enterprises may encounter in procurement process, the various driving factors of counterfeiting were analyzed. According to cost-benefit method, setting reasonable punishment that could eliminate counterfeiting behavior were put forward. Finally, the effective strategies and measures of anti-counterfeiting for petroleum engineering enterprises were discussed.
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Prediction of Chinese Urban and Rural Income Gap Based on ARMA Model
CHEN De-yan
2011, 31 (1): 88-91. DOI:10.3696/j.issn.1672-6952.2011.01.024
Abstract ( ) PDF ( 1782KB ) ( ) 　　
 
With the rapid development of the economic, the income of Chinese residents is increased significantly, however the level of urban-rural income gap has also been increasing. Income inequality is growing and it has already aroused extensive attention of the whole society. Based on the data of income gap per capita between rural and urban areas from 1978-2008 in China, it fits the regressive curve by trend graph and establishes an time series model of ARMA by the residual sequence, furthermore analysis, identification, estimation and test of the model parameters were conducted to establish a suitable forecast model of China's urban-rural income gap. The outcome proves that the model takes on the traits of simple shortcut, high forecasting precision and adaptation to actual needs. The prediction indicates that China's urban-rural income gap is widening, the state should take positive measures to control the situation. State should increase investment in agriculture, protect the interests of farmers and raise the income of peasants to maintain social stability.
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Analysis of Enterprise Value Contributions Added by Intelligent Capital
QIAN Guang-ming
2011, 31 (1): 92-96. DOI:10.3696/j.issn.1672-6952.2011.01.025
Abstract ( ) PDF ( 995KB ) ( ) 　　
 
Taking 60 large manufacturing industrial enterprises of listed companies in china as the research samples, an Influence of intelligent capital of listed firms to the enterprise value contributions was studied by using relevant analysis and multiple regression analysis. It indicates that intelligent capital plays an important role in the promotion of corporate profitability and enterprise market value.
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