scholarly journals Weight Analysis of Influence Factors and Potential Evaluation Method for Chemical Combination Flooding

2018 ◽  
Vol 53 ◽  
pp. 01022
Author(s):  
LIU Zhaoxia ◽  
WANG Qiang ◽  
MA Desheng ◽  
Gaoming ◽  
LIU Wanlu
Keyword(s):  
Evaluation Method ◽  
Influence Factor ◽  
Comprehensive Evaluation ◽  
Influence Factors ◽  
Prediction Method ◽  
Weight Coefficient ◽  
New Method ◽  
Chemical Flooding ◽  
Evaluation Score ◽  
Chemical Combination

In this paper, the weight coefficient of influencing factors for chemical combination flooding is determined by using grey correlation theory. A calculation method for comprehensive evaluation score of chemical combination flooding is established. The influence factor grading and weight grading are combined in this method. By collecting and analysing chemical combination flooding field tests, a prediction method for chemical combination flooding is established by the exponential regression. It reflects the relationship between EOR of the chemical combination flooding and the comprehensive evaluation score. The new method is applied in 6 different reservoirs to evaluate the effect of chemical flooding. The new method determines the weight coefficient of influence factors for chemical combination flooding. It can quickly predict EOR factor of chemical flooding to provide a basis for chemical flooding planning in the field.

Fuzzy Comprehensive Evaluation of Water Quality Management Information System

2014 ◽  
Vol 1044-1045 ◽  
pp. 486-489
Author(s):  
Xin Wang ◽  
He Pan
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Theory ◽  
Water Quality Management ◽  
Water Environment ◽  
Prediction Method ◽  
Fuzzy Comprehensive Evaluation ◽  
Good Choice ◽  
Water Resources Protection ◽  
Set Up

Water environment assessment is a basic and important work of water resources protection. We set up a fuzzy comprehensive evaluation of water environment based on fuzzy theory and prediction method in this paper. The comprehensive assessment of water environmental quality relates to complicated phenomena and interaction of multi-factor of evaluation. There are plenty of fuzzy phenomena and fuzzy concepts, therefore, make quantitative processing by the comprehensive evaluation method of fuzzy is a good choice to get good results.

A new method to evaluate the accuracy of the sediment source mixing model

2021 ◽  
Author(s):  
Peng Shi ◽  
Yang Yu ◽  
Lulu Bai ◽  
Peng Li
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Mixing Model ◽  
New Method ◽  
Sediment Source ◽  
Sediment Sources ◽  
Comprehensive Evaluation Method ◽  
Small Watersheds ◽  
Optimal Allocations ◽  
Sloping Farmland

<p>Fingerprint identification technology has been widely used to extract sediment source proportions, but the only indicator currently available to assess the accuracy and applicability of the results is good-fit (GOF). We have proposed a new method to evaluate sediment source results and quantitatively evaluate the applicability of sediment source mixing models. A typical check dam in the Loess Plateau was used to evaluate the new method by combining field sampling and numerical simulations. Collins (C) and modified Hughes mixing (M-H) models were used to quantitatively analyze the sediment sources of the check dams built and operated until July 2017. The results showed that the best combination for the fingerprint factors in the dam-controlled watershed, was Zn, Mg, Mn, and d (0,1), which had an 86.1% identification ability. With rainfall, the relative sediment contribution rates from gullies, sloping farmland, grasslands, and branch ditches were 54.22%, 23.56%, 15.54%, and 6.68%, respectively. The M-H mixing model had a higher comprehensive score (2.72) when compared with the C mixing model (2.54). The comprehensive evaluation method could provide an effective scientific theoretical basis for optimal allocations of water and soil conservation in small watersheds.</p>

Efficiency Evaluation of Resources Value Flow Based on Circular Economy for Coal-Fired Power Plant

2012 ◽  
Vol 472-475 ◽  
pp. 3125-3128
Author(s):  
Zhi Ming Xie ◽  
Guo Hui Lan ◽  
Xuan Yi
Keyword(s):  
Power Plant ◽  
Circular Economy ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Influence Factors ◽  
Application Process ◽  
Resource Value ◽  
Comprehensive Evaluation Method ◽  
Value Flow

This paper applies extension comprehensive evaluation method to evaluate resources value flow (RVF) efficiency of coal-fired power plant (CFPP) in the development of circular economy, analyzes the influence factors of resource value efficiency level, and establishes the matter-element evaluation model of RVF efficiency for CFPP. It also illustrates the application process of extension comprehensive evaluation method through case studies, simply reflecting the efficiency level of RVF in CFPP.

The Comprehensive Evaluation Method Based on GIS of Oil well Casing Damage

2013 ◽  
Vol 807-809 ◽  
pp. 2595-2601
Author(s):  
Wei Bin Xu ◽  
Qing Jie Zhu ◽  
Hai Bo Jia
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Influence Factors ◽  
Weighted Average ◽  
Combination Method ◽  
Oil Well ◽  
Oil And Gas Development ◽  
Multi Criteria Evaluation ◽  
Casing Damage ◽  
Ordered Weighted Average

Oil well casing damage is one of the security problems in petroleum engineering, it should be paid more attention in oil and gas development. Influence factors of oil well casing damage are very complicated, and the evaluation criteria of each influence factors are different. Therefore, for the assessment of casing damage, should be based on a comprehensive engineering and petroleum geology of the argument, using multi-criteria evaluation method to implement from the safety point of view. The development of multi-criteria evaluation method based on GIS oil well casing damaged isnt only consider the relative importance of each influence factor, but also fully consider the various factors of space walks and order of importance. With the help of IDRISI software, Jinzhou oil production plant in the 25 block as an example, calculating order weights and criteria weights, the comprehensive evaluation of damage to the casing pipe of oil well is made. By comparison of weighted linear combination method and the ordered weighted average (OWA) method, analyzes the ordered weighted average method advantage.

A Comprehensive Quantitative Evaluation Method of Emulsifying Properties

2014 ◽  
Vol 518 ◽  
pp. 3-7 ◽  
Author(s):  
Yi Zhang ◽  
Hua Long Liu ◽  
You Yi Zhu ◽  
Hong Yuan ◽  
Jie Wu
Keyword(s):  
Crude Oil ◽  
Quantitative Evaluation ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Experimental Studies ◽  
Petroleum Industry ◽  
Chemical Flooding ◽  
Emulsifying Properties ◽  
Oil Emulsion ◽  
Technological Support

In order to meet the demand of a quantitative evaluation the emulsifying properties of crude oil for the chemical flooding, based on the comparative analysis of relevant methods and standards, through a large number of experimental studies, a quantitative test methods and emulsifying power of the emulsion stability were established, the concept of the emulsion integrated index was definition, a quantitative evaluation method and the evaluation of the overall performance of the crude oil emulsion grade were put forward in this paper. The method takes into account the emulsification speed and persistence of the emulsifier. The method has been included in China's petroleum industry standard, and gives a technological support for the application in the comprehensive evaluation of the displacing agent in the petroleum industry.

Evaluation of APP User’s Satisfaction Based on Fuzzy AHP

2014 ◽  
Vol 631-632 ◽  
pp. 1215-1218
Author(s):  
Ya Ran Chen ◽  
San Xing Cao
Keyword(s):  
Rapid Growth ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Ahp ◽  
Influence Factors ◽  
Evaluation Index ◽  
Fuzzy Mathematics

In recent years the number of APP users rapid growth, so the research on APP user’s satisfaction is particularly important.This paper makes analysis and research on the evaluation method of APP user’s satisfaction, in view of the different influence factors of users in the use of the APP, we put forward the evaluation index of APP user’s satisfaction set, and used AHP to determine the weight of evaluation index, finally we get the asessment for the APP user’s satisfaction situation through the fuzzy mathematics comprehensive evaluation model.In the end of the paper, we can get a conclusion that the method is objectivity, practicability and accuracy.

Design of Building Evaluation System of Ecological Urban Agglomeration in Qinling Mountains of China

2016 ◽  
Vol 41 (3) ◽  
pp. 61-65
Author(s):  
Kanhua Yu
Keyword(s):  
Evaluation System ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Weight Coefficient ◽  
Analytic Network Process ◽  
Urban Agglomeration ◽  
Evaluation Index System ◽  
Ecological Effect ◽  
Evaluation Index ◽  
Qinling Mountains

Constructing livable eco-civilized cities has become one of the important tasks of the reasonable planning of urban development. The construction of an ecological city aims to achieve the harmonious coexistence of society, resource, and environment. However, the current evaluation method system of an ecological building encounters problems from a defective evaluation index. Hence, a relatively perfect evaluation index system is built. First, the analytic network process (ANP) is combined with the existing standards online. Then, a rapid calculation of the index weight is performed using Super Decisions software. Based on the needs of complicated problems, the classical TOPSIS model algorithm is improved by introducing the weight coefficient; this improved TOPSIS algorithm is then taken as the core to build a whole set of comprehensive evaluation method system for ecological buildings. The ecological urban agglomeration in Qinling Mountains of Xi’an is used in this study as the example to perform verification in practice. Contrastive analysis is performed on the evaluation results of the new and old buildings using this method system; the results indicate that the ecological effect of the buildings in the new area is much better than that of buildings in the old area. These results are mostly consistent with the evaluation results given by the expert group. Thus, the comprehensive evaluation system proposed in this article is reliable, and effective, as well as practical to some extent. This method can be used in a wider range of building evaluation and further improved in future studies.

A study on product assembly and disassembly time prediction methodology based on virtual maintenance

2019 ◽  
Vol 39 (4) ◽  
pp. 566-580 ◽  
Author(s):  
Kaijun Cai ◽  
Weiming Zhang ◽  
Wenzhuo Chen ◽  
Hongfei Zhao
Keyword(s):  
Evaluation Method ◽  
Body Movement ◽  
Influence Factors ◽  
Prediction Method ◽  
Standard Theory ◽  
Content Type ◽  
Time Prediction ◽  
Physical Prototype ◽  
Motion Characteristics ◽  
Virtual Maintenance

Purpose Based on virtual maintenance, this paper aims to propose a time prediction method of assembly and disassembly (A&D) actions of product maintenance process to enhance existing methods’ prediction accuracy, applicability and efficiency. Design/methodology/approach First, a framework of A&D time prediction model is constructed, which describes the time prediction process in detail. Then, basic maintenance motions which can comprise a whole A&D process are classified into five categories: body movement, working posture change, upper limb movement, operation and grasp/placement. A standard posture library is developed based on the classification. Next, according to motion characteristics, different time prediction methods for each motion category are proposed based on virtual maintenance simulation, modular arrangement of predetermined time standard theory and the statistics acquired from motion experiment. Finally, time correction based on the quantitative evaluation method of motion time influence factors is studied so that A&D time could be predicted with more accuracy. Findings Case study of time prediction of products’ various A&D processes is conducted by implementing the proposed method. The prediction process of diesel cooling fan disassemble time is presented in detail. Through comparison, the advantages and effectiveness of the method are demonstrated. Originality/value This paper proposes a more accurate, efficient and applicable product A&D time prediction method. It can help designers predict A&D time of a product maintenance accurately in early design phases without a physical prototype. It can also provide basis for the verification of maintainability, the balance of the design of product structure and system layout.

Study on the Evaluation Method of Engineering General Contracting Enterprises Multi-Project Selection

2012 ◽  
Vol 174-177 ◽  
pp. 3258-3262
Author(s):  
Xin Hua Wu ◽  
Na Tang ◽  
Feng Zhen Liu
Keyword(s):  
Index System ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Influence Factors ◽  
Project Selection ◽  
Evaluation Index System ◽  
Expert Advice ◽  
Gray Relational Analysis ◽  
General Contracting

The purpose of this study is to provide an ideal multi-project selection method.The influence factors of the contractors project selection are analyzed according to the characteristics of engineering general contracting enterprises(EGCE) multi-project management.The evaluation index system of EGCE multi-project selection is build by expert advice and the method of research papers retrieved.The index system is divided into 4 levels, and includes 27 indicators in six areas.A based on multi-level gray relational analysis comprehensive evaluation model is proposed to evaluate the priority of the projects.The evaluation method may help EGCE choose the projects to meet their own development strategies.

The Research on the Management of Project Group for Flexibility Based on Fuzzy Comprehensive Evaluation

2011 ◽  
Vol 121-126 ◽  
pp. 4842-4846
Author(s):  
Yun Ning Zhang ◽  
You Hong Cai
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Influence Factors ◽  
Fuzzy Comprehensive Evaluation ◽  
Evaluation Index System ◽  
Group Management ◽  
Comprehensive Evaluation Method ◽  
Project Group ◽  
Gray Correlation ◽  
Correlation Analysis Method

Project group is characteristic of dynamic uncertainty and higher complexity ，which decides its management methods need to have enough flexibility. Based on the analysis of the flexible influence factors of the project group of management, the paper constructs the project group management flexibility evaluation index system, introduces fuzzy comprehensive evaluation method to the evaluation, and in order to increase its objectivity and feasibility ures the gray correlation analysis method to determine the weights during the process of solving. Finally provides an application example to show that the method is effective and practical.

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