Study on Coalbed Methane well Type Optimization of Badaowan Formation in Junggar Basin

2014 ◽  
Vol 535 ◽  
pp. 622-625
Author(s):  
Cheng Long Liu ◽  
Hui Guo ◽  
Xiang Hao Wang ◽  
Jin Wang
Keyword(s):  
Coal Seam ◽  
Coalbed Methane ◽  
Evaluation System ◽  
Horizontal Well ◽  
Evaluation Method ◽  
Junggar Basin ◽  
Fuzzy Evaluation ◽  
Ahp Method ◽  
Well Drilling ◽  
Coal Seam Thickness

This paper applies AHP method and fuzzy evaluation method to establish evaluation system of CBM well type in Junggar Basin. Conclusions are drawn as follows: weight of each factor which determines well type optimization is very different, coal seam depth is 0.402, coal seam thickness is 0.295, coal permeability is 0.163, coal seam dip is 0.14. Sikeshu area and center of the basin is not suitable for CBM ground drilling. Changji to Fukang area and Muleihasakexian to Wucaiwan area and East Wuerhe area are favorable for vertical well drilling. Jimusaer area is favorable for horizontal well drilling. Other areas in Junggar Basin need vertical and horizontal well joint drilling.

Study on Drilling and Completion Techniques of Horizontal well for Coalbed Methane

2014 ◽  
Vol 513-517 ◽  
pp. 2586-2589 ◽  
Author(s):  
Xin Feng Du ◽  
Yong Zhe Zhao
Keyword(s):  
Coal Seam ◽  
Coalbed Methane ◽  
Horizontal Well ◽  
Horizontal Wells ◽  
Mining Area ◽  
Variable Density ◽  
Technical Problems ◽  
Development Direction ◽  
Drilling Technology ◽  
The Many

Due to the unique reservoir characteristics of the coalbed methane (CBM) in China, many technical problems have to be studied and solved in the development of horizontal wells for CBM. In this paper, based on the V-type wells, we have summarized the many techniques involved in Drilling and completion of horizontal well for CBM in Binchang mining area, such as leakage protection and sealing, geosteering while drilling, remote connection, variable density cementing, Coal seam cavitation, fiberglass casing running into the well, and etc. It is pointed out that the air foam under-balance drilling will be the development direction for coalbed methane drilling technology.

Entropy Weight Multi-Level Fuzzy Comprehensive Evaluation in Power Plant Security Based on Reliability Identification

2012 ◽  
Vol 482-484 ◽  
pp. 2390-2395
Author(s):  
De Qiang Li
Keyword(s):  
Power Plant ◽  
Evaluation System ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Fuzzy Comprehensive Evaluation ◽  
Security Evaluation ◽  
Fuzzy Evaluation ◽  
Entropy Weight ◽  
Multi Level

In the paper, we establish an evaluation system in the study of four aspects such as people, regulation, equipment and technology management, field management and engineering construction. We present an entropy weight multi-level fuzzy comprehensive evaluation model in power plant security on the basis of reliability identification. Firstly, it identifies the reliability of power plant security evaluation system. Secondly, it can meet the condition that the system is reliable. Then it obtains the indicator weight of all levels in the evaluation system by the entropy weight method. Finally, it carries out a comprehensive evaluation in power plant security by the multi-level fuzzy evaluation method.

Research on Fuzzy Evaluation in the Enterprise Competitiveness

2014 ◽  
Vol 556-562 ◽  
pp. 6536-6539
Author(s):  
Tong Yu Jia
Keyword(s):  
Development Strategy ◽  
Evaluation System ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Economic Benefits ◽  
Fuzzy Evaluation ◽  
Insurance Company ◽  
Competitive Power ◽  
Power Evaluation

The competitive power of enterprise in the evaluation usually by enterprise economic benefits financial standards, in order to make the results more reasonable, this paper applied the fuzzy comprehensive evaluation method, by one insurance company management, human resources, market control ability to carry on the analysis, summarizes the influence of the competitiveness evaluation index, and use the weighted statistics calculation of index weight, the establishment of the enterprise competitive power evaluation fuzzy comprehensive evaluation model, and formed a relatively systematic and comprehensive evaluation system, this model is helpful to understand the development of the enterprise locus for enterprises to formulate the corresponding development strategy, to promote enterprise's sustainable development has a certain function, for the enterprise competitive power evaluation provides a quantitative analysis, so that the evaluation work to achieve satisfactory results. This method can also be extended to more the enterprise the competitive ability for transverse comparison.

Fuzzy Evaluation Method of Sustainable Development of Mining Area

2014 ◽  
Vol 587-589 ◽  
pp. 86-91
Author(s):  
Ri Jia Ding ◽  
Lu Yin
Keyword(s):  
Sustainable Development ◽  
Evaluation System ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Fuzzy Comprehensive Evaluation ◽  
Mining Area ◽  
Actual Condition ◽  
Fuzzy Evaluation ◽  
The Sustainable Development

With respect to mining area, to establish an evaluation system that aims to reflecting its actual condition and assessing its sustainable development ability has been of importance. In this paper, we discussed the meaning of sustainable development and evaluation factors, and then built a fuzzy comprehensive evaluation model to evaluate the sustainable development condition of mining area.

Gray Clustering Evaluation Method of MIE on Combinative Weight-Fixing

2010 ◽  
Vol 455 ◽  
pp. 369-372
Author(s):  
Yan Feng Li ◽  
H.H. Mou ◽  
K. Lv
Keyword(s):  
Evaluation System ◽  
Evaluation Method ◽  
Construction Process ◽  
Clustering Method ◽  
Ahp Method ◽  
Minimum Error ◽  
Research On Evaluation ◽  
Advantages And Disadvantages ◽  
The Core ◽  
The Way

The research on evaluation method of manufacturing enteraprise informatization(MEI) is the core of informatization evaluation system. According to the characters of MEI, a gray clustering evaluation method on combinative weight-fixing is brought forward . In the way to fix the index weights, firstly the advantages and disadvantages of the subjective and objective weight-fixing method are analyzed compositively. Then the subjective weights are gained from Analytical Hierchy Process(AHP) method and the objective weights from Gray Relating Analyses(GRA) method. Last the final indexs’ weights are gained from the combinative weight-fixing method based on the minimum error of optimizing project, which takes in the full advantages of the two methodes. Finally the informatization construction process is devided into certain Gray Types, and the informatization benefits are calculated with Gray Clustering method based on Whiten Function. In the end Three enterprises are chosen to analyze with gray clustering evaluation method on combinative weight-fixing.

scholarly journals Summary of the Port Shoreline Resource Evaluation Based on Triangular Fuzzy Analytic Hierarchy Process

2017 ◽  
Vol 24 (s3) ◽  
pp. 16-22 ◽  
Author(s):  
Liupeng Jiang ◽  
Tao Tao ◽  
Cheng Zhang ◽  
He Jiang ◽  
Jiaojiao Wang
Keyword(s):  
Analytic Hierarchy Process ◽  
Evaluation System ◽  
Evaluation Method ◽  
Fuzzy Comprehensive Evaluation ◽  
Fuzzy Analytic Hierarchy Process ◽  
Fuzzy Evaluation ◽  
Analytic Hierarchy ◽  
Resource Evaluation ◽  
Evaluation Matrix ◽  
Hierarchy Process

Abstract Port shoreline resources are the basis of port and shipping development, and its assessment method has become one of the hot issues in port research. On the basis of constructing a reasonable index evaluation system, this paper constructs the fuzzy evaluation matrix based on the triangular fuzzy analytic hierarchy process and constructs the fuzzy evaluation matrix by using the fuzzy comprehensive evaluation method, and obtains the maximum membership degree of the port shoreline resources. Compared with the traditional port shoreline Resource evaluation methods, the new one got more advantages in objective and quantitative. Finally, Combined with the Nanjing section of the Yangtze River as a case for verification, the results show that the model can accurately solve the problem of resource evaluation of port shoreline.

Application of the Fuzzy-AHP Method in Bridge Crane Safety Evaluation

2014 ◽  
Vol 496-500 ◽  
pp. 2788-2794 ◽  
Author(s):  
Gang Shen ◽  
Dong Xiang ◽  
Nan Liu ◽  
Peng Mou ◽  
Yong Yang
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Ahp ◽  
Safety Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Working Environment ◽  
Evaluation Index System ◽  
Bridge Crane ◽  
Fuzzy Evaluation ◽  
Ahp Method

Hoisting machinery belongs to special machinery equipment and is gradually developing towards advanced technologies such as lightweight, energy conservation and safety reliability. Therefore objective evaluation for safety circumstances of bridge crane has major engineering significance. The fuzzy-AHP comprehensive evaluation model has been established by fuzzy evaluation method and analytic hierarchy process (AHP) method. In addition, application of the fuzzy-AHP method in bridge crane safety evaluation has been discussed. Firstly, the safety evaluation index system is established according to working environment, manufacturing technology and service condition of bridge crane. Secondly, weight coefficient is determined by AHP method and single stage fuzzy evaluation is processed. Based on this result, multi stage fuzzy comprehensive evaluation is conducted. Finally, the safety grade of bridge crane is obtained. Besides, fatigue test of relevant main girder model is conducted and the accuracy of safety evaluation based on the fuzzy-AHP method is verified through test results.

scholarly journals Research on Establishing City Low Carbon Economy Evaluation Theory Model

2014 ◽  
Vol 8 (1) ◽  
pp. 446-450
Author(s):  
Xiao Wei
Keyword(s):  
Yangtze River ◽  
Evaluation System ◽  
Evaluation Method ◽  
Fuzzy Ahp ◽  
Fuzzy Evaluation ◽  
Low Carbon ◽  
High Carbon ◽  
Low Carbon Economy ◽  
Carbon Economy ◽  
Economy Evaluation

To explore the method of creating a theoretical model of urban low-carbon economy evaluation, and analyze the development status and level of low carbon economy in cities in the middle and lower reaches of Yangtze River; Method To introduce the basic theory of low-carbon economy, the principle and the technical route for creating the evaluation system of urban low-carbon economy, develop 3 layers of 5 categories of 18 evaluation indicators, conduct weighted calculation using Delphi method, analytic hierarchy process(AHP) , fuzzy evaluation method and fuzzy AHP method, investigate into 7 cities, such as Shanghai, Nanjing in the middle and lower reaches of Yangtze River, and evaluate the urban low-carbon economic status using the created models; Results The evaluation result shows that at present China has many cities at “medium to high carbon economy” or “high carbon economy” types. The development level of low-carbon economy lagged behind many western countries; Conclusion It is a most efficient pathway to improve the present low-carbon economic level by vigorously developing the low-carbon technology, developing the low-carbon environmental education and promoting the low-carbon concept.

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