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Hou Z.,Xi'an Technological University | Xia W.,China Petroleum Technology and Development Corporation | Deng D.,China Petroleum Pipeline Engineering Corporation | Wang Q.,Xi'an Technological University
Advanced Materials Research | Year: 2012

Deburring is a major bottleneck in manufacturing organizations. Burrs on the milled surface need to be removed and the surface quality must be maintained. Abrasive waterjet (AWJ) has been used in various operation for a wide range of materials. But no detailed investigations are known to be carried out on AWJ deburring. An orthogonal experiment is designed to investigate the effects of the AWJ parameters on burr removal and on surface quality. The results show that AWJ can remove the burrs from the stainless-steel specimens effectively under the condition of proper parameters, and the parameters such as abrasive grit size and stand-off distance are important not only for burr removal but also for surface quality, and slurry concentration is another important factor for surface quality.

Wang F.,Beijing University of Chemical Technology | Zhao Y.,Beijing University of Chemical Technology | Yang O.,Beijing University of Chemical Technology | Cai J.,China Petroleum Technology and Development Corporation | Deng M.,Beijing University of Chemical Technology
Journal of Loss Prevention in the Process Industries | Year: 2013

HAZOP analysis is a process hazard analysis method that has been widely applied both within and outside the chemical processing industries. This paper presents a design method for a process safety data management program for petrochemical plants based on HAZOP analysis and demonstrates the steps of application involved in building a process safety data management system for an ethylene oxide/ ethylene glycol production plant. Firstly, the production data files and relevant documents of the plants should be classified and stored in the program database as reference documents and treatment schemes for coping with abnormal situations should be collected and summarized as guidance documents. Secondly, the HAZOP analysis method is employed to identify all the dangerous deviations possibly existing in the production process of the ethylene oxide/ethylene glycol plant. Then, the relationships among the deviations, the reference documents and the guidance documents should be considered and evaluated. Finally, each dangerous deviation will be given a corresponding reference document and guidance document. The reference documents and guidance documents stored in the expert system can be utilized to help operators solve the corresponding technical problems and cope with abnormal situations. The process safety data management program will contribute to the identification, analysis and resolution of operation problems. When an abnormal situation occurs, according to the deviations exhibited in the system, the necessary reference documents and guidance documents will be quickly consulted by the operators, and an appropriate decision will be made to address the abnormal situation. Therefore, by using the process safety data management program, plant security and human safety in the petrochemical industries will be improved. © 2013 Elsevier Ltd.

Zhao J.,China Petroleum Technology and Development Corporation | Ge K.,China Petroleum Technology and Development Corporation | Chu C.,China National Petroleum Corporation | Li J.,China Petroleum Technology and Development Corporation
Natural Gas Industry | Year: 2015

A compressor, as a common process equipment, is widely used in all links of natural gas production. In recent years, natural gas compressors made in China have been gradually improved in design and manufacture, but still fall behind the imported compressors in many aspects. Therefore, the latest equipment and technologies of natural gas compressor companies all over the world were investigated, and comparative analysis was made on the current application of reciprocating and centrifugal compressors at home and abroad by taking those used for gas recovery by water drainage, gas gathering for processing, pipe transportation and gas storage as examples. Then, the disparities between the homemade compressors and the imported ones were summarized mainly in terms of independent design, manufacturing engineering and market share. Finally, four suggestions were put forward as follows. First, the types of products should be diversified to provide suitable products for complex operation conditions. Second, advantages should be defined and service level be further improved. Third, an expert team should be set up and design capacity in virtue of the development experience of foreign companies be enhanced. Fourth, calibration should be strengthened and the conformity of the products to the international general standards be increased. ©, 2015, Natural Gas Industry Journal Agency. All right reserved.

Wang Q.,Yangtze University | Wang Q.,China Petroleum Technology and Development Corporation | Xiao J.F.,SJ Petroleum Machinery Company
Applied Mechanics and Materials | Year: 2013

The framework is the main load bearing part of beam pumping unit. Its vibration performance has an important effect on the stability and reliability of beam pumping unit. This article takes the beam pumping unit (API C-228D-173-74) as an example, carries out the modal analysis in the environment of Solidworks Simulation, and obtains the first 6 orders of modal shapes and natural frequencies of the prestressed framework. This article clarifies the key technology of how to build the solid modal and how to apply load and constraints. The analysis result of the modal shows that the lowest frequency of the pumping unit framework (API C-228D-173-74) is 22.39Hz, which may be most likely resonant with the motor. We can adjust the rotate speed of the motor to avoid resonance. At the same time, the stiffness of the front legs is insufficient, suitable strengthen measures should be taken. © (2013) Trans Tech Publications, Switzerland.

Xu S.,China University of Petroleum - Beijing | Zhang Y.,China University of Petroleum - Beijing | Duan M.,China University of Petroleum - Beijing | Dai B.,China Petroleum Technology and Development Corporation
Key Engineering Materials | Year: 2016

This paper investigated the performance of single-lap joints with interfacial crack through the finite element method. The finite element method was validated by the G-R solutions at first. And then the influence of geometric parameter of the joint as well as the length of the interfacial crack were discussed. Results showed that the presence of a spew fillet can reduced the stress intensity factors (SIF).The relationship of the crack length ratio and SIF, adhesive thickness ratio and SIF were built. © (2016) Trans Tech Publications, Switzerland.

Kuang Y.,Southwest Petroleum University | Wu L.,Chengdu Jiuding Technology Group Co. | Tu J.,China Petroleum Technology and Development Corporation | Wu Y.,Petrochina | Dong Z.,Southwest Petroleum University
Xinan Shiyou Daxue Xuebao/Journal of Southwest Petroleum University | Year: 2016

In order to reduce the machining error of complex helical surface, this paper studied the algorithm about tool path of envelope milling by transforming the dynamic meshing relationship into the space geometry problems between milling-cutter and workpiece through time discretization and spatial discretization in machining process based on numerical simulation method. We build three-dimensional model of milling-cutter and workpiece surface of revolution, deduce the coordinate-transformation matrix of meshing relationship between milling-cutter and workpiece, simplify the minimal directed distance between millingcutter and workpiece into a two-dimensional problem, set up the simulation algorithm of tool-path of milling-cutter and finally get the parameter information of NC codes. The machining process programmed on the obtained parameters proved to be able to produce the helical surface with required precision. Error distribution of the profile and its influencing factors are studied too. © 2016, Science Press. All right reserved.

Mi S.,Petrochina | Zhang Q.,Petrochina | Liu X.,China Petroleum Technology and Development Corporation
Proceedings of IAMG 2015 - 17th Annual Conference of the International Association for Mathematical Geosciences | Year: 2015

Arrington firstly developed a method to estimate reserve growth as he studied the historical records of reserves in discovered oil fields of the United States. However, this method needs succebive reserves data. In most case, the reporting reserves data is discontinuous, usually there is a gap of several years between them. The importance of forecasting reserves growth accurately in such case made it necebary to develop improved method. In this paper, we proposed a method to model the cumulative growth functions diretly when only the gaping reserves data is available for analysis. Curve fitting method was used to estimate the parameters of the model proposed. USGS data was used to test the model and showed that: (1) this method predicted the annual reserve growth has the same accuracy as the modified Arrington method; (2) the new growth functions acted well in the gapping years data case; (3) this method can handle small sample size of data.

Kai Z.,Northeast Petroleum University | Feng T.,Northeast Petroleum University | Zhong R.,Northeast Petroleum University | Guo H.,China Petroleum Technology and Development Corporation
Proceedings of the 9th International Conference on Computer Science and Education, ICCCSE 2014 | Year: 2014

The remarkable growth of 3D models on the Internet has posed a great challenge for model search. Many 3D search engines are based on tag matching, which is usually more accurate in identifying relevant models by alleviating the challenge arising from the semantic gap. However, the performance of tag matching is highly dependent on the availability and quality of 3D model tags. Recent studies have shown that tags that are specific to the visual content of 3D models are often noisy and unreliable in real-world environment, leading to a limited performance of autotagging. To address this challenge, we propose a 3D model autotagging method based on semi-supervised weighted metric learning. Extensive experiments show that the proposed method is significantly more effective than the state-of-the-art. © 2014 IEEE.

Hou K.,Northeast Petroleum University | Ian F.,Northeast Petroleum University | Ao G.,China Petroleum Technology and Development Corporation | En Z.,Northeast Petroleum University
Proceedings of the 9th International Conference on Computer Science and Education, ICCCSE 2014 | Year: 2014

Human motion capturing has become an important tool in fields such as sports sciences, biometrics, and particularly in computer animation, where large collections of motion material are accumulated in the production process. Efficient storage, retrieval and transmission methods are needed to fully exploit motion databases for reuse and for the synthesis of motions. In this paper, a compression method for 3D Human motion data is proposed. We represent and compress the motion data using the clustering method and primary component analysis. The compressed data is adapted to network transmission with shorter time in order to maximize the use of network bandwidth and computational performance of local machines. At the client, we decompress the motion chips and rebuild corresponding human motion. Experimental evaluation of the method showed that the proposed method has high compression rate and is effective. © 2014 IEEE.

Li B.,Southwest Petroleum University | Shen X.-F.,China Petroleum Technology and Development Corporation
Proceedings - 2010 International Conference on Manufacturing Automation, ICMA 2010 | Year: 2010

In the process of the underbalanced drilling, the use of DDV can reduce the drilling time and protect the oil layer. Although DDV has been successfully used in domestic and foreign oil fields, the poor reliability of the switch action, the sealing property of the DDV and the central glide spindle to valve board impact seriously influence the DDV's service life. Targeting at these above problems, this paper will contain the movement simulation of DDV using the ADAMS software. The results of the simulation will be used to improve the structure of the central glide spindle to improve its service life. © 2010 IEEE.

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