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Table of Content
20 August 1993, Volume 15 Issue 3
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地质勘探
MECHANISM OF NATURAL FLUID FRACTURED RESERVOIRS
Lei San-duo Jiang Zi-ang Zhang Yong-hong Xiong Ying
1993, 15(3): 1-10. DOI:
10.3863/j.issn.1000-2634.1993.03.001
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Bsaed on hydraulic treatment mechanics and geologic characters of carbonate fractured reservoirs，this paper considers" carbonates-earth movement stress-natural fluid-frac-tured fissure-trap"as a system,and studies the initiation of the fractured fissure and the first migration of oil and gas,the stretch and expansion of the fractured fissures and the sec-uond migration of oil and gas，the shape distributions of the fractured fiss res. and accumula-lion laws of oil and gas systematically，and thus builds up the mechanism of natural fluid fractured reservoirs. It has high theoretical meaning and applicable value in the exploration and development of fractured reservoirs.
RELATIONSHIP BETWEEN OIL/GAS ACCUMULATION AND KARST FEATURES OF MAOKOU FORMATION IN LUZHOU AREA，SICHUAN
Yan Qi-bin Pang wen
1993, 15(3): 11-16. DOI:
10.3863/j.issn.1000-2634.1993.03.002
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The Karst system in Maokou formation (P) is classified into three different types,intra-formation paleokarstYangxin surface paleokarst,and fissure-cavern system karat. The lasttype is formed in intra-formation paleokarst£¬Yangxin surface paleokarst and fracture area£¬and during being transformed many times by underwater. It provides effective pore space for oil/gas accumulation and migration pathway, and controls the gas-water distribution in Maokou formation£¬in the area under study. The inhomogeneous develo}ent of the karat leads to forming a lot of vertical reservoir bebs and lots of lateral fissure-cavern systems. The relationship between gas and Water is complex,so there is no common watergas contact in the area. There is natural gas producing in the trap,and also good gas indication out of the trap.
FREQUENCY SPECTRUM ANALYSIS AND FAST ALGORITHM ON INTERPOLATION SIGNAL
Yi Zong-fu
1993, 15(3): 17-22. DOI:
10.3863/j.issn.1000-2634.1993.03.003
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This paper proposes a fre
CHARACTERS OF SANDSTONE RESERVOIRS AND INFLUENCING FACTORS OF THEIR PHYSICAL PRO-PERTIES IN HE FORMATION 3，SHUANGHE AREA
Wei Kui-sheng
1993, 15(3): 23-35. DOI:
10.3863/j.issn.1000-2634.1993.03.004
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This paper mainly describes the 3 principal factors for controlling physical properties of sandstone reservoirs in I-Ie formation 3，Shuanghe area，Henan. The factors are sedimenta-tion,postsedimental process(or diagenesis)and tectonism. The paper also points out that both porosity and permeability are closely related to the granularity midvaluc and the con-
tents of matrix. It is cementation and resolution that are key links for the contents of sec-ondary porosity. For this fan delta-sublake fan system，the favorable oil and bas一bearing region is the mid fan ,and the outer fan is a spectacular place on secondary exploration for oil and bas.
DETERMINATION OF CUT-OFF VALUE OF EFFECTIVE THROAT RADIA BY PERMEABILITY-CONTRIBUTION CURVE
ZHao Song-lin
1993, 15(3): 36-42. DOI:
10.3863/j.issn.1000-2634.1993.03.005
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The reservoirs in most continental basins in China are of relatively intensive heterogene-ity,common(y of low porosity and low permeability. It is very difficult and complicated to determine the cut-off value of effective throat radia for such reservoirs by conventional meth-ods. Based on our study of the reservoirs of J,S formation in Tu-Ha basin,we propose here a new simple and easy method，by which the cut-off value of effective throat radia for reser-voirs with characters mentioned above is accurately determined from the pore-throat volume versus permeability-contribution curve,and present the theoretical basis,the calculation pro-cedure and the accuracy check of the method. The result obtained by this method is satisfac-tory in quantitative evaluation of reservoirs.
油气田开发
HEAT MODELING THEORY AND EXPERIMENTAL STUDY OF PERMEATION IN OIL AND GAS RESERVOIR
Yang Jin-hai Huang Bing-guang Ma Guang-ming Li Shun-chu
1993, 15(3): 43-52. DOI:
10.3863/j.issn.1000-2634.1993.03.006
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This paper presents a kind of totally new modeling method for permeation in oil and reservoirs-heat modeling，and introduces its basic theory and modeling experiments for plane-radial permeation. The results of modeling experiments show that non-stationary per-meation in some complex oil and gas reservoirs can easily be simulated by heat modeling.
SOLUTION OF PRESSURE BEHAVIOR MODEL OF HORIZONTAL WELL IN NATURALLY FRACTURED GAS RESERVOIR BY ORTHOGONAL TRANSFORMATION
Wu Xiaoqing Li Xiaoping Chao Birong
1993, 15(3): 53-59. DOI:
10.3863/j.issn.1000-2634.1993.03.007
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This paper solves three basic initial and boundary valur problems of the horizontal well in naturally fractured gas reservoirs by using orthogonal transformation and matrix differen-tial equations ,thus obtaining the simple exact solution in form.
RELATION OF PRODUCTION OF HORIZONTAL WELL TO SAND PRODUCTION
Li Bin-yuan
1993, 15(3): 60-66. DOI:
10.3863/j.issn.1000-2634.1993.03.008
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Through the stress analysis，this paper discusses the relations of natrual stress，forma-tion pressure，hole angle and azimuthal angle to sand production of reservoir. It shows，asregards the say记production，the produdtion of oil veil 'shoed be controlled to obtain secure well production. The paper presents the conception of bottom-hole critical flowing pressure
and secure production of oil well. It is of practical significance for management of oil well.
TRANSPORT MECHANISM OF BED-LOAD CUTTINGS
Wang Yan-hui Luo Ping-ya
1993, 15(3): 67-73. DOI:
10.3863/j.issn.1000-2634.1993.03.009
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The transport of cuttings bed in annulus bottom is bed-load sheared layer. Because of its high concentration and dispersed particles，the properties of cuttings bed are much differ-ent from continuous molecules and single particles. Based on the energy principle，the paper analyzes the influence of the factors of the friction and collision among cuttings particles and
the viscous resistance of ftuid(mud)on the collision times，moment exchange and dispersed forces. These conclusions are very important for studyuing and understanding the transport rule of bed-load cuttings.
PRINCIPLE AND METHOD OF TRIAXIAL STRESS DESIGN OF CASING STRING
Du Chun-chang Yuan Qi-ji
1993, 15(3): 74-82. DOI:
10.3863/j.issn.1000-2634.1993.03.010
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This paper discusses the principle and method of triaxial stress of casing string，analyzes the external loads applied on the casing string in detail，deduces the triaxial stress design from triaxial stress formula and external loads，and makes up the design program. Calcula-tion results show that this method is not only safe but also economical，and may be for field
technicians'reference.
石油机械工程
ANALYSIS OF MATCHING BENEFITS OF TRIPLEX MUD PUMP WITH CHARGING PUMP
Zhang Zong-quan
1993, 15(3): 83-90. DOI:
10.3863/j.issn.1000-2634.1993.03.011
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According to the calculation analysis and the data from field contrast tests，this paperanalyses the benefits of the triplex mud pump after using the charging pump,and points out the existing problems of the charging pump in use, and the points for attention in papular-
ized application.
OPTIMUM DESIGN OF OIL WELL SYSTEM WITH PUMPING UNIT
Liu Rui-dian Zhang Wen-sheng Dongshi-ming
1993, 15(3): 91-97. DOI:
10.3863/j.issn.1000-2634.1993.03.012
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Through the treatment of test data from measuring system efficiency of an oil welt with a pump-ing unit by regression analysis，we obtain the regression equations of flow quantity factor，wasted power in bore ,and surface unit efficiency ,and on its basis discuss the way of reasonably selecting the motor rated power ,of predicting the system efficiency of an oil well with a pumping unit ,and of opti-mally designing the pumping paramctere.
EXPLORATION Or CHECKING SUCKER-ROD PUMP CLEARANCE UNDER HIGII TEMPERATURE
Liang Zheng
1993, 15(3): 98-103. DOI:
10.3863/j.issn.1000-2634.1993.03.013*
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On the basis of simply analyzing the gain or loss of checking method in [1],this paper probes into the measures of improvingchecking accuracy from thermodynami es theory.
OPTIMUM DESIGN Or PUMPING UNIT REDUCER SYSTEM Or DOUBLE-ARC GEAR
Liu Qing-you Meng Kun-liu
1993, 15(3): 104-109. DOI:
10.3863/j.issn.1000-2634.1993.03.014
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This paper presents an optimum design of the reducer system under conditions of 9 design variants and 25 constrained variances by the constrained random method ,obtains the best design ,and further
proves the advantages of double-arc gears usad in pump unit reducer.
TEST STUDY ON HIGH-TEMPERATURE CREEP OF SITICON NITRIDE CERAMICS
Xu Zhiyue J. A. Todd
1993, 15(3): 110-116. DOI:
10.3863/j.issn.1000-2634.1993.03.015
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This paper studies the creep properties of silicon nitride containing 6wt%yttria arid 2wt% ahrmirla in the temperature range of 1300'C to 1400'C .The stress exponent is shown to be 2 and the true activation energy to be 700ks mol-1.The best results and analysis reveal that. the creep mechanism is a diffusion controlled creep mechanism involving nitrogen difus-sion through the grain boundary glassy phase.
油田化学
RESEARCH STATUS QUO AND DEVELOPMENT OF MACROMOLECULAR FLOCCULANTS
Zhao Li-zhi Zhao Yong-peng Li Guang-yu
1993, 15(3): 117-121. DOI:
10.3863/j.issn.1000-2634.1993.03.016
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This Paper gives a summary of the research，application and development of macro-molecular flocculants，especially synthetic and chemically modified macromolecular floccu-lants.
DERIVED METHOD OF ATOMIC SPECTRAL TERM
Liang Fa-shu Zhao Yong-peng
1993, 15(3): 122-129. DOI:
10.3863/j.issn.1000-2634.1993.03.017
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This paper puts forward a rapid and handy method of deriving spectral terms on equiva-lent、nonequivalent and ground group states according to the electronic microstate and the energy order differsnce of spectral terms in the group state.
物理数学
DUPLEX REDUNDANCY FAULT-TOLERANT SYSTEM OF 8031 SCM
Chen Wei Lin Qiuz-hen Zhang lei Pu Li
1993, 15(3): 130-134. DOI:
10.3863/j.issn.1000-2634.1993.03.018
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This paper presents a duplex redundancy fault-tolerant system of 8031 single-chip microcomputsr (SCM )，in which many kinds of techniques,including pulse synchronization, error detection with bus sampling comparison，and checkpoint recovery，etc. are applied.
The system is of the functions of fault rollback recovery,diagnosis for isolation and degraded running. Therefore，its reliability has greatly been improved.
INITIAL CONDITIONS FOR INFLATION IN GENERALIZED EINSTEIN THEO-RIES
wang wen-fu
1993, 15(3): 135-138. DOI:
10.3863/j.issn.1000-2634.1993.03.019
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This paper calculates the cosmic wave function for a cosmological model with two scalar fields:one is the etandard inflation whose potential is exponentially coupled to the other field. If the scale factor a is thought of as a time variable,the initial values of cp and x for the success of inflation are obtained .If the scalar to be quantum mechanically stabilized with a most probable radius of the Planck length.
MODIFICATION OF ANALYTIC SOLUTION OF MATHEhIATICAL MODEL FOR SLIGHTLY COMPRESSIBLE I101}lOCENEOUS LIQUID FLOW IN PORUUS MEDIA
Li Qi-sheng Liu Han-zong
1993, 15(3): 139-142. DOI:
10.3863/j.issn.1000-2634.1993.03.020
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This paper analyzes the analytic solution of mathematical model for slightly compressible homogeneous liquid.and points out that the analytic solution should be modifed when parameter s is less than zero.
