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    20 December 2004, Volume 26 Issue 6
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    地质勘探
    GEOCHEMICAL STUDY OF OIL AND GAS RESERVOIR FORMATION OF HONGCHE AREA
    CHEN Shi-jia ZENG Jun WANG Xu-long LI Yan-jun
    2004, 26(6):  1-4.  DOI: 10.3863/j.issn.1000-2634.2004.06.001
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    The oil and gas reservoir types are very various in Hongthe faults of northwestern part of Zhungaer basin,including heavy oil,light oil and dry gas. The heavy oil is distributed at the handing wall, light oil and gas reservoir at the footwall. Reservoirs rang from Carbonniferous to Cretaceous. Oil and gas is sourced from Fengcheng formation and Wuerhe formation of Changji sag based on oil light hydrocarbon and natural gas carbon istope , oil and gas distribution character at different stage and the character of the secondary change are studied. Reservoir formation model is estalished, and favourable exploration area is also determined.

    WELL LOGGING INTERPRETATION APPROACH FOR WATER-FLOODED LAYERS AND ITS APPLICATION IN THE MW OIL FIELD OF THE TUHA AREA
    CHEN Ke-gui LIU Shun-sheng CAO Jian-hua GAO Wei LUO Zhong-hui WU Shun-wei CHEN Yan-zhang
    2004, 26(6):  5-8.  DOI: 10.3863/j.issn.1000-2634.2004.06.002
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    On the basis of analyzing the log data of many wells in the MW oil field, the qualitative mode to identify the water-flooded layers has been set, and the log interpretation models of many geologic parameters have been established, using the analysis technique for the key wells. The interpretation program of these models were developed for the log interpretation, and one suit of evaluation standard of novel and convenient and applicable for
    the MW area for the water-flooded layers was be formed. Applying these techniques to the water-flooded log data of more than 20 wells, it is found that the interpretation and evaluation results are acceptable and feasible compared to the production and testing result of the relevant zone. It also brought good geological effect and provides exact information helpful to find more reservoir and improve the production for the oil field.
    THE RESEARCH OF LOGGING EVALUATION METHOD TO FORECAST THE RESERVOIR PRODUCTIVE CAPACITY IN THE PROCESS OF DRILLING THE HORIZONTAL WELL
    FAN Xiang-yu XIA Hong-quan CHEN Ping et al
    2004, 26(6):  9-12.  DOI: 10.3863/j.issn.1000-2634.2004.06.003
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    Reservoir productive capacity forecast is one of the important content of reservoir evaluation, horizontal well logging interpretation is mainly through the contrast corrected technique of horizontal well conventional log curve and pilot well conventional log curve, adding to the traversing relation between horizontal well track and formation. Although a large amount of information about well track and formation relation can be provided to exploitation engineers with this method, production oil gas ability of the reservoir ,in the process of drilling the horizontal well, it is difficult to be pointed out. Which brings difficulty to development of the field .in this paper, based on conventional log material, well profile is divided with the sensitivity analysis
    and cross plot technique, then the reservoir effective thickness is
    derived. At the same time,analyzing pilot production data and calculating out the horizontal well production level under the normalization condition, favorable linear relationship between them is found and productive capacity prediction model between horizontal well daily oil production and reservoir effective thickness of XX line of oils in DS oil field is set up. All the research
    mentioned above provides more reliable horizontal well logging interpretation to reservoir description.
    THREE FORMING OIL POOL SYSTEMS AND EXPLORATION RESEARCH IN WEST SICHUAN
    Fu Xiao
    2004, 26(6):  13-16.  DOI: 10.3863/j.issn.1000-2634.2004.06.004
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    Based on the petroleum exploration, several tens oil and gas fields have been discovered in thrust fault films of forland basins, depressions and eastern slope of western area of Sichuan. According to types of source rocks and trap property, combined with formations’s development of geatectonis and
    geohistory of area, near 10000 meters sedimentary overlaying formation can be divided into three oil-gas bearing strata:sea facies oil bearing system;sea-land interbedding facies oil-gas bearing system and land facies oil-gas bearing system .The material bases and shape distortional embryively for each system have been formed by Emei structure (or Dongulu) movment of upper
    Permian, Yinzh and yanshan cycles of Mesogoie era respectively. Three systems have been improved, destroy and organiged in varying degrees by Xishan movement of Poleogene. In this paper, three structure units distribution and exploration thoughts of each system in basin have been discussed.
    RELATIONSHIP BETWEEN DISTRIBUTION CHARACTERISTIC OF FAULTS FRACTURES AND OIL-GAS RESERVOIRS IN WEST SICHUAN
    LUO Xiao-quan GUO Dong-xiao
    2004, 26(6):  17-20.  DOI: 10.3863/j.issn.1000-2634.2004.06.005
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    The many of gas reservoirs of Xu jiahe are controlled by fractures which evolution has closely relationship with tectonic and fault. The gas reservoir is not only controlled by tectonic, but is closely related with tectonic evolution, therefore, on the basis of systematic analysis tectonic evolution of Xu jiahe oilgas accumulation, the gas and oil accumulation Xu jiahe can be predicted.
    石油与天然气工程
    NUMERICAL SIMULATION STUDY FOR THE TIGHT SANDSTONE GAS RESERVOIR IN WEST SICHUAN
    LUO Hong-tao MA Li-mei XIONG Yan-li et al
    2004, 26(6):  21-23.  DOI: 10.3863/j.issn.1000-2634.2004.06.006
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    The production history simulation for artificially fractured wells in the tight sandstone gas reservoir in west Sichuan is a difficult problem. Since the porosity and permeability of the formation is very low, the dynamic change of formation’s permeability along with the decrease of formation pressure cannot be neglected which is caused by many factors such as fracture
    close, water sensitivity effect and so on. But generally the porosity and permeability of the formation is supposed constant in theoretical basis of numerical simulation. Therefore, reasonable and effective simulation cannot often be attained. On the basis of analysis the practical production data in a tight sandstone gas reservoir in west Sichuan, formation permeability’s
    change rules and description methods in production process have been studied using advanced numerical simulation technology and then history simulation and plan prediction can be finished well.
    APPLICATION OF DYNAMIC PREDICTION MODEL FOR OVERPRESSURE GAS RESERVOIR
    YANG Fang-yong ZHANG Lie-hui CHEN Jun
    2004, 26(6):  24-27.  DOI: 10.3863/j.issn.1000-2634.2004.06.007
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    The pressure drop equation was derived from the volume balance principle in allusion to the characterization with abnormity of pressure-drop plot and constant-volume in overpressure gas reservoir. And by combining the binomial seepage equation of gas wells with the well-bore flow equation, the basic performance prediction model was established. The model gives consideration to the compaction of gas-bearing reservoir, the elastic expanding of rock grains and the elastic expanding of formation irreducible water. And with the model, the detailed dynamic prediction has been conducted on the actual overpressure gas reservoir. The calculation results show that the methods presented in this paper are reliable and correct. The model can preferably predict the production performance in the stable production period and the production decline period of overpressure gas reservoir.
    NUMERICAL SIMULATION OF HUTUBI GAS RESERVOIR EXPLOITATION
    ZHANG Mao-lin WANG Bin QIAN Gen-bao et al
    2004, 26(6):  28-30.  DOI: 10.3863/j.issn.1000-2634.2004.06.008
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    The high pressure PVT experiment data of Hutubi condensate gas reservoir was calculated and the fluid compositional characteristic parameters, which can suitably describe the phase behavior of this condensate gas reservoir, were determined. According to the well location and the structure shape and the geological characteristics of the wells, the three dimensional geological model was built. A good production history fit was completed after its reserves fit. The numerical simulation research in the nine aspects of this gas reservoir is completed, and the results can forecast the future production performance and conduct the realistic development of the gas reservoir.

    A METHOD TO DETERMINE THE EFFECTIVE PRODUCTION TIME OF LOW PERMEABILITY CONDENSATE GAS WELL
    LEI Deng-sheng TANG Hai MA Xiao-ming et al.
    2004, 26(6):  31-34.  DOI: 10.3863/j.issn.1000-2634.2004.06.009
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    With the decline of the pressure, the retrograde gas condensate in gas condensate reservoir will be accumulated near the wellbore, which would cause the formation permeability damage. Even more which will influence the normal production of gas-condensate well. Based on the transfusion theory for a gascondensate system at a constant temperature, the saturation distribution characteristic of gas condensate and multinomial infiltration flow characteristic were studied in the paper. At the same time, after analyzing different kinds of constraint condition of gas-condensate well, the production performance theory and means of gas-condensate well at considering condensate pollution condition were also discussed, and a sort of new method which can forecast gas-condensate well Horner time was derived. The application results showed that the result of Horner time of gas-condensate well got from this paper was accordant with the practical Horner time, it indicated that the approaches in this paper are reliable and practicable.

    NON-DARCY FLOW EXPERIMENT OF LOW PERMEABILITY GAS RESERVOIR AND ANALYSIS OF INFLUENCING FACTORS
    WU Ying NING Zheng-fu YAO Yue-dong
    2004, 26(6):  35-38.  DOI: 10.3863/j.issn.1000-2634.2004.06.010
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    Gas slippage phenomena existing gas flow in low permeability gas reservoir was verified through indoor physical simulation experiment of gas displacing core and analysis of the experimental data, which is the Kinkenberg effect subjected to nonDarcy seepage flow low. At the same time,factors that influenced gas Non-Darcy flow in tight gas reservoir were analyzed,
    and this established the stable foundation for well and truly confirming the mathematic expression of Non-Darcy factor.
    STUDY OF THE MECHANISM OF THE OIL DISPLACEMENT IN LOW PERMEABILITY RESERVOIRS
    ZHU Su-qing SU Yu-liang YE Hui-min
    2004, 26(6):  39-41.  DOI: 10.3863/j.issn.1000-2634.2004.06.011
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    A mathematical model of one dimension displacement was established in the base of taking into account the starting pressure gradient, and then a solution of equation was solved. The results indicated that in the lowermeability reservoirs, the presence of the starting pressure gradient cause to the increase of the formation pressure and the decrease of the average water saturation. Different direction of the oil displacement brought
    the different effect in the low-permeability reservoirs development.
    STUDY OF THE MULTIPLE OBJECTIVE OPTIMIZATION OF OILFIELD DEVELOPMENT AND INTEGRATIVE UDGMENT MATRIX
    ZHANG Jin-liang DING Xian-feng SA Xiao-ying et al.
    2004, 26(6):  42-45.  DOI: 10.3863/j.issn.1000-2634.2004.06.012
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    According to the reservoir engineering theories and optimization techniques, a multi-objective model of oilfield development programming on the basis of the establishment of the correlative relationship of the development index of oilfield was studied by the functional simulation theory, such as differential
    simulation method and NN method; And a programming algorithm of the integrative judgment matrix in AHP was also proposed to solve the multi-objective optimization problems. An example was presented; the calculating result indicated that the constructed model and the given method were feasible.

    油气化学工程与化工
    RESEARCH ON DESULFURIZATION OF STRAIGHT-RUN DIESEL BY LIQUID—LIQUID CATALYTIC OXIDATION
    WANG Hao TANG Xiao-dong WU Yan et al.
    2004, 26(6):  46-49.  DOI: 10.3863/j.issn.1000-2634.2004.06.013
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    Aiming at the technical and economical problems in diesel hydrodesulfurization technique which include high equipment investment and operation cost and problems in hydro peroxide oxidation desulfurization method such as expensive oxidant, low diesel yield and sulfur containing sewage emission, a new catalytic oxidation desulfurization method of straight-run diesel has been developed. At atmospheric pressure and low temperature, the straight-run diesel is catalyzed by a liquid catalyst TS2 and oxidized by air, and then the oxidized diesel is extracted by a composite extracting solvent EA-5 and adsorbed by clay to remove the sulfide. Results have shown that under optimal conditions, i.e. 60℃, 0.1MPa, 5min and volume ratio of catalyst/diesel is 0.1, the total sulfur content of diesel can be reduced from 1658μg/g to 133μg/g, the yield of diesel can reach 97.5% and the sulfur content of refined diesel can meet the second classification standard of“World fuel ecification”
    Compared with other existing diesel desulfurization methods,the advantages of the method are low investment and operation cost, moderate operating conditions and no waste emission.
    MERSUREMENT ON CONCENTRATION OF SILICON ANDALUMINUM IN REACTING SOLUTION OF COMBINATION FLOODING SYSTEM
    MIAO Feng ZHOU Shou-kui LIU Xiao et al.
    2004, 26(6):  50-53.  DOI: 10.3863/j.issn.1000-2634.2004.06.014
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    Concentration measurement of silicon and aluminum in reacting solution of combination flooding system is a key problem for studying chemical behavior of reservoir minerals in alkaline flooding system. The effect of surfactant (OP0) and hydrolyzed polyacrylamide-3430S (HPAM) on concentration measurement of silicon and aluminum have been investigated systematically. Results have shown that HPAM has no effect on the measurement of aluminum when the concentration of HPAM in the formulated solutions is lower than 50μg/ml. The
    effect of polymer on silicon concentration measurement is little and may be neglected as long as the polymer concentration is lower than 10μg/ml. The influence of surfactant on silicon and aluminum concentration measurement is very small and may be neglected when surfactant concentration is no more than 10μg/ ml. Therefore, the concentration of polymer and surfactant
    should be controlled under 10μg/ml when measuring silicon and aluminum concentration in reacting solution of combination flooding system.
    STUDY OF SULFUR DEPOSITION MODEL AND ITS APPLICATION OF SOUR GAS FIELDS
    YANG Man-ping PENG Cai-zhen LI Cuinan;et al
    2004, 26(6):  54-56.  DOI: 10.3863/j.issn.1000-2634.2004.06.015
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    In the process of developing sour gas well, the solubility of sulfur is reduced and separated out elemental sulfur with the fall of reservoir pressure. The deposition of elemental sulfur in pores reduces the permeability of gas reservoir, even causes sulfur block. Based on analysis of elemental sulfur deposition mechanism and theory of gas stable flow, a new model for forecasting sulfur deposition has been founded. By the model, the characteristic and law of the elemental sulfur deposition is predicted in
    the early phase of producing sour gas, and the deposition law for
    different productivity of gas can be analyzed. On the basis of these facts, logical producing rate can be selected and harmful influence of sulfur deposition on the productivity can be prevented.
    THE CREEPING REVERSION EFFECT OF LINKED POLYMER SOLUTION IN POROUS MEDIUM AND ITS INFLUENCE ON DISPLACEMENT EFFICIENCY
    LUO Xian-bo PU Wan-fen WU Hai-yan et al.
    2004, 26(6):  57-59.  DOI: 10.3863/j.issn.1000-2634.2004.06.016
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    In this paper, experimental investigation on linked polymerolution has been conducted with a sand packing model and the henomenon of the creeping reversion in porous medium has observed, which can explain the viscoelastic effect of linked polymer solution. The effect of creeping reversion of linked polymer solution in porous medium on the displacement efficiency has been analyzed with two sand packing models by the change of flow rate (67,161,67cm/d) and a stable flow rate (67cm/d), namely, under the condition of creeping reversion and no creeping reversion effect. Results indicate that the creeping reversion of linked polymer solution could increase oil recovery by 1.5 percent in the experimentation condition.
    EXPERIMENTAL STUDY OF MEMBRANE WATER BASED DRILLING FLUID SYSTEM
    WANG Ping-quan SUN Jing-sheng LI Xiao-hong et al.
    2004, 26(6):  60-63.  DOI: 10.3863/j.issn.1000-2634.2004.06.017
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    The membrane structure characteristics, efficacy and mechanism of a membrane filtrate reducer CMJ-2-XNJ-1 have been introduced. And the properties of the water based drilling fluid composed by CMJ-2-XNJ-1 with cover additive JH-1,viscosity reducer JN-1 have been studied. Results indicate that CMJ-2-XNJ-1 can form membrane structure with excellent performance, and its water based drilling fluid system has excellent flow property, low filter loss and thin cake, strong inhibition, good lubrication, good salt resisting, strong temperature resisting, and anti-contamination and good protection of oil reservoir. The system has no fluorescence and toxicity, it can meet the needs of environmental protection.
    石油机械工程及其它
    STUDY OF COMPUTER SIMULATION OF METAL FLOW BEHAVIOR IN SOLID EXPANDABLE TUBULAR TECHNOLOGY
    LIU Yong-gang LIAN Zhang-hua YANG Long et al
    2004, 26(6):  64-67.  DOI: 10.3863/j.issn.1000-2634.2004.06.018
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    The solid expandable tubular technology developed in t nineties of the twentieth century to saving the hole diamete and originated from the Enventure company in USA. Now t technology has been put into practice, but it is at the stage theoretic research in our country. This article established t
    mechanics model of the expand process of the expandable casi with the elastic-plastic finite-element contact question of t ADINA software. Through choosing different value of the frtion coefficient and extent of expansion,the detailed compusimulation analysis of the expand process that expanded the
    80 steel 95/8″tubular was done . under the foundation of quatative and quantificational comparison of axial and radial placement of the groups cell at different location along the raddirection of the tubular, gained the metal flow rules of the so expandable tubular at different value of the friction coefficie
    and extent of expansion, provided theoretic fundament for tstructure design of expandable cone ,choosing material of solid expandable tubular and the practical application of the so expandable tubular technology.
    REPAIR TECHNIQUES FOR FAILURE CASING OF Oil AND WATER WELLS IN HENAN OIL FIELD
    PENG Yong-cai
    2004, 26(6):  68-72.  DOI: 10.3863/j.issn.1000-2634.2004.06.019
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    In the later development stage, different casing damage ocurs in many oil wells and water injection wells of the first production factory of Henan oil field. As a result, the flood pattern and the implementation of stimulation and inje
    tion-increasing means were affected seriously; a lot of reserv and production were lost; in the meantime, the repair of casidamage wells needs increasing the cost. In this paper, factocausing casing damage were analyzed comprehensively, athen preventive and disposal measures were presented, whiare useful for people to lay casing repair means.
    LOGGING APPLICATION AND CONTRAST ANALYSIS OCASING FAILURE
    QIAN Jun TANG Zhen-huan GUAN Li et al.
    2004, 26(6):  73-76.  DOI: 10.3863/j.issn.1000-2634.2004.06.020
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    The types and reasons of the casing failure in Jiangsu oilfield were analyzed in the paper. The well temperature and isotope, ultrasonic imager, electromagnetic defect inspection, 40arm imaging caliper logging tool were used to study the casing failure. The optimal choosing of the methods of casing inspections and interpretation evaluation, the examples of the casing
    logging were presented.
    STUDY ON THE IMPROVEMENT OF MEASUREMENT PRECISION OF P-WAVE AMPLITUDE
    HAN Xue-hui ANG Jian-ping YUAN Zhao-yu et al.
    2004, 26(6):  77-79.  DOI: 10.3863/j.issn.1000-2634.2004.06.021
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    Based on the error analysis of P-wave amplitude measurement, the effect from the mutual positions(axis’s offset and rotation)of the sensors through the experiments was studied. The esult indicated that the rotation can hardly affect the P-wave velocity and amplitude. The axis’s offset can hardly affect P-wave velocity; however, it can affect P-wave amplitude. A set of device was put forward, which can enhance the measure precision of the P-wave amplitude.

    APPLICATION OF DS18B20IN OIL OR GAS WELL TEMPERATURE MONITORING SYSTEM
    SUN Yan-ping ZHONG Gong-xiang LIANG Zheng et al.
    2004, 26(6):  80-82.  DOI: 10.3863/j.issn.1000-2634.2004.06.022
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    Oil or gas well temperature monitoring system is the important safety equipment in oil field. Serial chips are used broadly in this system, the single chip and serial aptitude sensor to compose this system was used. The system hardware flo chat and temperature sensor chip DS18B20 task flow were itroduced, particularly narrate memorizer operate order and Rooperate order which getting the serial number of the temper ture sensor.
    经济管理
    PAY ATTENTIONS TO SOME QUESTIONS AND SHO METHODS IN ECONOMIC EVALUATION OF NATURA GAS
    GUO Jian-yu WANG Xiu-zhi TAN Zhong-ping et al
    2004, 26(6):  83-85.  DOI: 10.3863/j.issn.1000-2634.2004.06.023
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    At present, developing of natural gas goes into the devoping climax. Based on the analysis in flourish developing natral gas industry and reasonable economic evaluation about somdifferent of types gas reservoir and combined to general rule athe character of benefit change, the analysis method of economic benefit of different development stage has been put forwa
    and the mathematics model which can provide the basis of tdevelopment plan for gas field has been made. In this pape four questions which serve decision making of natural gas devopment and improve economic benefit in the natural gas fiewhich are exploration investment, gas cost ,economic outp and gas price have been expounded and proved.

    THE EVALUATION OF ECONOMIC BENEFIT OPETROLEUM ENTERPRISES IN DEA
    LI Xin-min HOU Feng-hua ZHANG Zai-xu et al
    2004, 26(6):  86-88.  DOI: 10.3863/j.issn.1000-2634.2004.06.024
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    With discussing the evaluation methods of petroleum ente prises, this paper applies data envelopment analysis (DEA) evaluate the economic benefit of 10 petroleum enterprises Shengli Oilfield, also gives management information and desion basis by finding the improvement directions of the inefcient decision making units.