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Your search keyword '"Hu, Zhen"' showing total 31 results
Start Over Author "Hu, Zhen" Journal applied mechanics and materials
31 results on '"Hu, Zhen"'

1. Design and Optimize the Branch Pattern of Herringbone Well

Author

Hong Liang Chen, Wan Wei Yang, Hu Zhen Wang, Hai Tao Yang, Dong Sheng Yang, and Zhen Yu Liu

Subjects
Engineering, Mathematical optimization, Development plan, Computer simulation, business.industry, Branch number, Branch length, General Medicine, business, Productivity, Branch angle
Abstract

This article analyzes the influence of different branch number, branch length, branch angle on the productivity of the herringbone well. It also summarizes the strongest influence parameters and the weakest influence parameters. Provide theoretical guidance for the formulation of herringbone well development plan. The results show that the maximum effect parameter is branch length, then branch number and branch angle the weakest.

Published
2014

2. Research on Starting Pressure Gradient of Low Permeability Reservoir

Author

Di Li Wang, Chun Sen Zhao, and Hu Zhen Wang

Subjects
Fluid viscosity, Permeability (earth sciences), Materials science, Low permeability, Geotechnical engineering, General Medicine, Mechanics, Porosity, Application methods, Pressure gradient
Abstract

Due to the presence of starting pressure of low permeability reservoir, so researching on starting pressure gradient of low permeability reservoir is necessary. while starting pressure gradient is relevant to permeability and porosity, it can be obtained through laboratory experiments¡¢well testing interpretation method¡¢theory derivation combined with practical application method . The result of a large number of laboratory experiments shows: starting pressure is related to permeability .The greater the permeability is, the smaller the starting pressure is. They both present the similar hyperbolic relationship; the greater the viscosity of the oil is, the greater the starting pressure is. In this paper, we get the starting pressure gradient formula through the method of theory derivation combined with practical application, meanwhile we put forward the relationship between starting pressure gradient and permeability, porosity¡¢viscosity .

Published
2014

30. Application of Mathematical Morphology Filter in Non-Stationary Signal of the Spindle Dynamic Balance Regulator Online Adjustment Process

Author

Hu, Zhen Bang, Zhang, Dong Sheng, Xu, Mu Xun, and Tao, Tao

Abstract

The signal which is generated by the dynamic balance regulator for unbalanced spindle in the process of adjustment, having strong nonstationarity. The traditional signal processing methods could not deal with these signals, but also could not express the processing of signal changes. Aiming at the problem, a method combining mathematical morphology filter and the short-time Fourier transform is applied in the non-stationary signal processing in this paper. Using mathematical morphology filter could reduce the noise of spindle vibration signal, and improve the SNR. The amplitude of spindle vibration signal could be got by means of short-time Fourier transform method. Utilized the method proposed in this paper, non-stationary signal of the spindle dynamic balance regulator online adjustment process has been analysed, the results of the experiment show the feasibility of the method.

Published
2013
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31. The Empirical Research on the Estimation of the Construction CO2 Emission Based on EPA Non-Road Modeling

Author

Li, Hong Xian, Lei, Zhen, Hu, Zhen Yun, and Liu, Bing Sheng

Abstract

The green and sustainable construction has become a popular topic, especially with the respect of the green house gas emissions. Meanwhile, the estimation of the CO2 emission during the construction is an important process among the CO2 emission management. The paper carries out the empirical research on the construction CO2 emission based on the EPA non-road modeling and a real case. Firstly, the research methodology is developed based on the EPA non-road modeling. Then, based on a real case, the total CO2 emission of the project and the CO2 emission of each machine are calculated. Finally, other scenarios are considered and compared, and the optimal solution is found. The proposed methodology provides an accurate, consistent & realistic quantification method of CO2 emissions at micro level during construction, which will be of benefit to the green and sustainable construction.

Published
2011
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