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Table of Content
20 February 1992, Volume 14 Issue 1
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论文
AN EXPERT SYSTEM IN WELL TEST ANALYSIS
Cheng Suimin Li Ruyong Wang Weixing
1992, 14(1): 1-7. DOI:
10.3863/j.issn.1000-2634.1992.01.001
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Artificial intelligence has gradually been used in the domain of well test analysis in recent years. By its nature, well test analysis is really an artificial intelligence problem. This paper discusses how expert system is applied to well test interpretation and what should be studied. It also describes in detail the composition, the structure, the mechanism and the method of our expert system in well test analysis. Finally, an example is given to show the usage of the expert system.
A METHOD OF MEASURING VISCOELASTIC PROPERTIES OF RETAINED POLYMER IN POROUS MEDIA
Han Xianqing Gao Yourei
1992, 14(1): 8-17. DOI:
10.3863/j.issn.1000-2634.1992.01.002
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This is the fourth paper studying the viscoelaticity of retained polymer molecules in porous media, (1) (2) (3) A comparison of molecular flexibility is made between HPAM and Xathan Gum. It has been shown theoretically that the viscoelastic recovery of the flexible retained molecules causes the effective flowing area of throat to decrease exponentially, and thus causes the flow rate to decrease in the same manner. Based on this, a new method has been developed for measuring the relaxation time of retained polymer molecules in porous media.The effect of core permeability and soulution salinity on viscoelastic flow has also been studied.
ANALYSIS OF EFFECT OF WELLBORE HYDRODYNAMIC CONDITIONS ON MECHANISM OF FORMATION DAMAGE
Luo Zhaofeng Xiong Youming
1992, 14(1): 18-24. DOI:
10.3863/j.issn.1000-2634.1992.01.003
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In this paper, the DSE dynamic simulation equipment is used to study the effect of such parameters as pressure difference, time, temperature, mud flow rate and rotational speed of drilling tool on the formation damage. Then, the comparative analysis between dynamic state damage and static state damage is completed. The experiment results play an important role in the analysis of formation damage mechanism, in the determination of damage evaluation standards, and in production practice.
SOLUTION TO PROBLEMS OF BEAM BY STEP FUNCTION
Zhou Guoyou
1992, 14(1): 25-33. DOI:
10.3863/j.issn.1000-2634.1992.01.004
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By using the concept of step function and its differentiointegral rules, the solution of problems of beam may be expressed by a unified equation. The method by which the problems of beam are solved is simple and standardized, and more convenient and easier to master. In order to explain its application, some examples are given in this paper.
FUZZY RELIABILITY CALCULATION ON SAFETY MARGIN ADN APPLICATON OF-GEARS
Zhang Peng Xiao Fangchun
1992, 14(1): 34-43. DOI:
10.3863/j.issn.1000-2634.1992.01.005
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This paper presents the fuzzy reliability calculation method on the safety margin, and establishes fuzzy reliability calculation formulas of the tooth bending strength and contact strength by analyzing fuzzy degree of gear s safety margin At last an example is analyzed too.
APPLICATION OF BORON-VANADIUM-DOPING TECHNIQUE TO DIES
Zhao Qing Su Meirong Qi Shuming
1992, 14(1): 44-48. DOI:
10.3863/j.issn.1000-2634.1992.01.006
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This paper deals with the application of the boron-vanadium-doping technique to dies. The experimental analyses have been made of the microstructures and wear resistance of the boron-vanadium-doping layer of die steel, and of the influence of technological parameters on it. The results show that the wear resistance of dies after the treatment is improved so much that their working life becomes many times longer than that before the treatment.
APPROACH TO METHOD FOR CALCULATING ANNULAR CLEARANCE LEAKAGE OF SUCKER ROD PUMP
Liang Zheng Li Tianzeng
1992, 14(1): 49-54. DOI:
10.3863/j.issn.1000-2634.1992.01.007
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On the basis of evaluating the existing method for calculating leakage of sucker rod pump, this paper derives the general computational formula for the annular clearance leakage of sucker rod pump, and points out mistakes in References (2,4). Finally, examples are used to analyze the existing methods and compare it with them.
CALCULATION OF LENGTH AND DIAMETER OF GAS PIPELINE END
Zheng Qinggao Liao Yong
1992, 14(1): 55-61. DOI:
10.3863/j.issn.1000-2634.1992.01.008
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Gas storage of pipeline end is used to overcome the unbalance of gas consumption round the clock. As the users undulatory gas consumption at the end of pipeline day and night causes the unsteady gas flow in pipeline end, this paper applies the gas unsteady flow equation to calculate the length and diameter of pipeline end. After comparing the results by the unsteady gas flow calculating method with those by the steady gas flow calculating method, it is shown that the pipeline end determined according to steady gas flow calculating method could not meet the demands of overcoming unbalance of gas consumption the clock round sometimes.
DETERMINATION OF VALUE OBJECTIVES OF INDETERMINATE BAR-SYSTEM BY IMPROVED TIANZHONG S METHOD
Yong Qidong Xiao Fangchun
1992, 14(1): 62-70. DOI:
10.3863/j.issn.1000-2634.1992.01.009
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Based on Tianzhong s method, a fuzzy comprehensive judgement is applied to determine an equivalent constant S, and an improved Tianzhong s method is presented. The value objectives of indeterminate bar-system structure arc determined by this method, and examples are used to explain its application.
FORMATION AND EVOLUTION OF FAULT BLOCK 23 IN WFNLIU GAS FIELD AND THEIR INFL-UENCE ON DISTRIBUTION OF GAS AND WATER
Yan Qibin
1992, 14(1): 71-76. DOI:
10.3863/j.issn.1000-2634.1992.01.010
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Wen-23 fault block is a horst fault block in the middle and north parts of wenliu structure in the central swell of Dongpu Depression. Sha-4 gas reservoir is an inclined nose-like structure in the south. The fault block results from the pull from the near east to the west and the thrust to the east as well as the right spin and translation compound stress, thus forming the existing horst structure pattern broken up by faults. wendong and wenxi faults not only are the boundaries of the east, the north and the west,but also control the distribution of gas and water in the fault block.
FORMATION OF HIGHSPEED LANDSLIDE AND MUDFLOW OF MOUNTAINOUS ROCKS IN QIKUO HUAYING, SICHUAN
Feng Yugang
1992, 14(1): 77-81. DOI:
10.3863/j.issn.1000-2634.1992.01.011
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Landslide and mndflow often lead to the special natural disaster in the economical construction of mountainous areas. This paper has expounded that disastrous mudflow is caused by the highspeed landslide in Qikuo, Huaying city. Among the factors of its influence, besides lithological and geological structures, the most important is the changes in the atmospheric and undergrund waters, which result in the formation and expansion of mudrock creep zone in the mountainus rock. In addition, the thunderstorm and drenching rain are the cause of huge mudflow.
FRAME-BASED KNOWLEDGE BASE MANAGEMENT SYSTEM
Liu Jinyu Wang Daming
1992, 14(1): 82-88. DOI:
10.3863/j.issn.1000-2634.1992.01.012
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As one of the most effective methods of knowledge representation and with unique style, frame system is a favourite with people. This paper creates a frame system by using list processing of logic programming language Prolog, and designs a frame-based knowledge base management system which can be self-defined and self-maintained in many ways.
DEVELOPMENT OF MICROPROCESSOR BY DUAL-PORT RAM
Chen Wei Lin Quiping Pu Li
1992, 14(1): 89-93. DOI:
10.3863/j.issn.1000-2634.1992.01.013
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A practical method of inserting waiting state in Single-Component Microcomputer (SCM) and a 8031 SCM development system composed of dualport RAM are provided in this paper. It is a parallel dual processor system consisting of a master, a dual-port RAM board and a SCM emulator. The master can monitor SCM so that the breakpoint function of software is achieved easily. The system is a cheap ICE, so it can develop other microprocessor by replacing the emulator.
TECHNO-ECONOMIC ANALYSIS OF OIL PIPELINE UNDER EQUAL TEMPERATURE
Liu Xiantao Peng Huiping
1992, 14(1): 94-101. DOI:
10.3863/j.issn.1000-2634.1992.01.014
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Taking minimum cost into account, this paper establishes a mathematic model to calcuate optimum technical phrameters of oil pipeline under an equal temperature, and presents a solution of the model.
A NEW METHOD OF DESIGNING MAGNETIC COUPLING PARALLEL RESONANT CONVERTER
Feng Wenjiang
1992, 14(1): 102-107. DOI:
10.3863/j.issn.1000-2634.1992.01.015
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This paper analyzes a magnetic coupling parallel resonant converter (PRC) by the state space method and obtains the steady state solutions. On the basis of the results, the author presents a simple design procedure. In the circuit analysis, the paper takes into account the effects of parasitic parameters of the high frequency transformer, which makes the design principle more effective.
OPTIMIZATION ANALYSIS OF PRODUCING LARGEST OUTPUT POWER OF NETWORK CIRCUITS
Chen Chaoyang
1992, 14(1): 108-111. DOI:
10.3863/j.issn.1000-2634.1992.01.016
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The steepest ascent method is used to analyze the active linear network circuit which contains several loads and make it produce the largest output power. This method can offer optimum data for the reasonable arrangement of electronic device port.
WEIGHTED IMPROVED METHOD OF FUZZY SIMILAR CHOICE AND APPLICATION IN COMPREHENSIVE EVALUATION OF OIL AND GAS FIELD DEVELOPMENT PROJECT
Geng Xinyu Liu Yuji
1992, 14(1): 112-115. DOI:
10.3863/j.issn.1000-2634.1992.01.017
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In this paper, further improvement is made on the method of fuzzy similar choice, so that it can be adopted to arrange the elements by integrating the weight with Hamming Distance. It is a more exact and more effective method in practice.
ON DERIVATIVE OF PIECEWISE FUNCTIONS AT THEIR DIVIDING POINTS
He Binquan
1992, 14(1): 116-121（. DOI:
10.3863/j.issn.1000-2634.1992.01.018
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In Reference(1), the question of derivation of absolute value function has been solved. Its results are extended to general piecewise functions in this paper. First, two lemmas are given, and then the necessary and suffiei ent condition of piecewise functions at their dividing points and its corollary are obtained.
