Tubing corrosion is a difficult problem in oilfield production. In order to explore the main factors influencing the tubing corrosion, this study first select some region of northern shaanxi 28 Wells, spent nearly 2 years of tubing corrosion weightlessness method of monitoring and analysis of physical and chemical properties of produced fluid to conduct a comprehensive system, then SPSS program is used to analyze the 11 influence factors such as temperature, moisture content, pH and the correlation of corrosion, at the same time in order to verify the accuracy of the statistical analysis of the results, the spot corrosion coupon for scanning electron microscopy (SEM) and energy spectrum analysis. The results show that the water content, chloride ion and sulfide of the produced fluid are relatively high, and the water quality is alkaline. Through grey correlation calculation, the correlation degree with corrosion rate is 0.8386, 0.8281 and 0.8281, respectively. The results of scanning electron microscopy and energy spectrum analysis are basically consistent with the statistical analysis, indicating that the property of produced fluid can be used to predict the corrosion status of tubing.
This paper takes the project oriented small and medium-sized enterprises as the research object and analyses the importance and necessity, summarizes the connotation of project oriented small and medium-sized enterprises, the stability of dynamic alliances, the performance of small and medium-sized enterprises and the risk management of small and medium-sized enterprises from the theoretical level. This is a basis for further study of construction problem of small and medium-sized enterprises dynamic.
Study on the thermoelectric effect of electric on vehicle performance problems. Local fuzzy logic control strategy based on, the application of ADVISOR simulation software, The established vehicle model of the hybrid system simulation, the simulation results show that, better improve the vehicle fuel economy and emissions, make the motor work in high load area, high efficiency with low emissions. At the same time system engine, motor, transmission system and battery efficiency can be better maintained.
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