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    20 February 2006, Volume 28 Issue 1
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    地质勘探
    RESEARCH OF JURASSIC HYDROCARBONIC SAND-STON HORIZONTAL PREDICTION IN THE NORTH-EAST SICHUAN BASIN
    JIAG Xiao-guang; PEN Da-un ZHONG Zi-chuan et al.
    2006, 28(1):  1-4.  DOI: 10.3863/j.issn.1000-2634.2006.01.001
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    In the north-east of Sichuan Basin, the Jurassic stratum is a set of very great thick continental deposition. In recent year,several industrial gas wells have been gotten fmm this stratum as drilling work was developed in the shallow stratum of Sichuan Basin. So, it shows: the key for increasing a success rate of
    drilling well is to find out the sandstone and supply about the hydrocarbonic information of the sandstone in the Jurassic stratum of the north-east Sichuan Basin. But, it is difficult to predict the distribution of the channel sandstone and it's hydrocartonic case because the main drilling target far Jurassic's J2s is a
    interbedding constitution with a great horizontal change of the sandstone and shale. In this paper，following a synthetic research view from multiple scientific subjects，fist of all，to research carefully the J2s depositional situation in the Wu Baochang一Ihr Kouhe area of the north-east Sichuan $asin，and then，to combine the research of the geology and logging with the technology of the geophysical information analysis，the plane distribution of J2s2 channel sandstone and it's hydrocartonic case were predicted by means of the synthetic interpretalion of the velocity inversion(strata ) and energy absorption analysis (weaa) for the seismic data for the drilling well but also to explore a new way for the reservoir prediction of the shallow continental deposition in Sichuan Basin.
    MULTIATTRIBUTES LITHOLOGICAL INVERSION OF IGNEOUS ROCKS BASED ON NEURAL NETWORK
    RAN Qi-quan ZHOU Xue-feng HU Yong-le.
    2006, 28(1):  5-8.  DOI: 10.3863/j.issn.1000-2634.2006.01.002
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    Based on core analysis, the lithalogies, electrology charac-ters, and wave impedance characteristics of Igneous Rocks have been analyzed with geological, logging, seismic and many other information. The carrelativity between the lithologies, electrology characters and wave impedance, seismic attribute has been systematically investigated. To overcome the shortage of conven-tional wave impedance inversion, a set of multi一attributes 1i-thological inversion of Igneous Rocks based on neural network has been established. The lithologies of Igneous Rock in Zaoyuan oilfield have been predicted with the inversion method ,and the distribution of thickness and porosity were given.
    A HORIZONTAL STACKING BASE ON FUZZY ADJUDICATING
    LI Da-wei YIN Cheng CAI Xiao-gang et al.
    2006, 28(1):  9-12.  DOI: 10.3863/j.issn.1000-2634.2006.01.003
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    Basing on the mode of the signal identifying, applying the method of fuzzy adjudicating, the standard trace has been gotten by means of stacking to each trace. And then each trace has been adjudicated by fuzzy adjudicating method. When found the worst trace comparing with the standard trace and get rid of it. Repeating the former course until that we got the appointed词u-
    dicating result or the program had reached the maximal number of the trace. The simulating test indicates that the result of our method is better than that of the traditional method.
    STUDY OF THE RFLATIONSHIP BETWEEN STRUC-TURAL FEATURE AND CRACK IN GUIZHOU CHISHUI REGION
    HU Ming QIN Qi-rong LI Chang-qin .
    2006, 28(1):  13-17.  DOI: 10.3863/j.issn.1000-2634.2006.01.004
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    The main nature-gas reservoir is carbonate rock in Guizhou Chishui region. Whether the reservoir is good or not directly is influenced By the crack growth situation in the carberpate rock layer. Drilling detection shows that where's the crack develops, there"s the advantage segmentation of nature-gas res-ervoir. This article uses stcveture analysis method to systemati-cally research the structural feature of Chishui region, and confirm the relationship between structure and crack，-discuss the cracks increased period and times, character,distribution state and distribution realm in this region, which lightens the orienta-lion for further nature-gas exploration.

    SEQUENCE STRATICRAPHY AND ICHNOLOGY OF SILURIAN CENTEAL TARIM BASIN .NORTHWEST CHINA
    CHENG Xin-ling
    2006, 28(1):  18-22.  DOI: 10.3863/j.issn.1000-2634.2006.01.005
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    Based on core and well-logging data，combined with re-gional geological setting, the local succession of Silurian Central Tarim Basin is divided into three type 1 third-order deposition-al sequences, namely, sequence 1，sequence 2 and sequence 3.Because of the lack of lowstand systems tract, these sequences consist solely of transgressive systems tract and highstand sys-
    terns tract. The transgressive deposit of sequence 1 can be sub-divided, from base to top, into two main facies;(1)thin-bed-ded sandstone alternating with thin-bedded mudstone ;(2)planar stratified sandstone. Facies 1，which is dominated by lid-al bedding thin sandstone alternating with thin-bedded mud-
    stone, reflects mixed flat sedimentary environment. Because of mediate hydrodynamics and favorable eco-environment, trace fossils, including fodinichnia and domichnia, develops in mass. From base to top, the abundance and diversity of these trace fossils decrease gradually as with the bioturbation index. Facies 2，which is represented by planar-stratified or parallel-stratified
    sandstone, reflect sand flat sedimentary environment with hydro-dynamic condition. Due to high hydrodynamics and unsuitable condition for organism, the abundance and diversity are relative-ly low, leading to existence of scatted dwelling burrows. The highstand systems tract of sequence 1，which is mainly products of mud flat, exhibits a succession of fining-and shallowing up-
    wards parasequences. The mud flat , which is characterized chiefly by domichnia and fodinichnia, has different ichnogenus, abundance and diversity compared to facies 2. In the highstand deposit, the abundance, diversity and bioturbation index also show a gradual decrease from base to top. In conclusion , not on-ly the composition, abundance and diversity of trace fossils differ among systems tract of the same sequence, but also the charac-
    leis of trace fossils show some regularity within the same systems tract.
    ANALYSIS ON TIME OF FORMATION OF OIL AND GAS RESERVOIR IN WELL DEGU 2 OF LINQING EX-PRESSION
    JIANG Ping WANG Jian-hua ZHAI Wei-hong.
    2006, 28(1):  23-25.  DOI: 10.3863/j.issn.1000-2634.2006.01.006
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    Well Degu 2 is located in construction of Bixue Dian in Dezhou sag of Linqing expression，Shengli oilfield. Analysis of inclusion show that the time which oil&gas enter into trap of well Degu 2 is at the period of sedimentation in Shashan Member-Guantao Formation. Analysis of gas component show that oil
    &gas begin to migration in the period of low mature and mature for source rock, and accumulate to trap of well Degu 2. Gas in hydrocarbon is mainly from the crack gas of early kerogen in Ⅲtype kerogen. The character of coal-genetic gas is low mature based on the analysis of carbon isotope in gas. Maturity of gas is about 0. 8% so on. Reservoir in Carboniferouse-Permian and Ordovician is bad, coal-bearing seam in Carbonniferouse-Permian have a poor capacity of hydrocarbon-generating, poor capacity of hydrocarbon-generating and migration of Carbonifer-ouse-Permian is mainly reason of failure for the exploration well Dey 2.

    石油与天然气工程
    ESTABLISHED INFLOW PERFORMANCE RELATION-SHIP FOR GAS CONDENSATE WELLS
    MEI Qing-yan ZHANG Lie-hui LI Yong-jun et al.
    2006, 28(1):  26-28.  DOI: 10.3863/j.issn.1000-2634.2006.01.007
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    Under the production of the gas condensate depletion, con-densate oil began to buildup at the bottomhole and gradually formed the high saturated region, led to the relative permeability and absolute permeability dropping, and the productivity of the gas condensate was influenced. The pseudopressure product in she equation of two phase fluid index of the oil and gas conden-
    sate was divided into the product of the two integral functions, one product function related to the physics properties of the high pressure, the other production function related to the effective permeability. Based on the study of the paper, the pseudo ef-fective permeability with the transient pressure determined with test well data was presented, and obtained the real pseudopres-sure and IPR for the gas condensate well.

    FOLLOWING WATER INJECTION SIMULATION AF-TER PROFILE CONFORMANCE
    WANG Lei LIU Ping-li ZHAOU-qiang et al.
    2006, 28(1):  29-31.  DOI: 10.3863/j.issn.1000-2634.2006.01.008
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    The injected water in the treated area can be divided info three different effects; the pure compression, the compression and micro flow, the macro flow. In this paper, according to the three different courses the flow model was set up to describe them and the model was used to simulate the water flow in trea-led area. Secondly, the core flooding experiment was done, the
    experiment results had the good consistence with the simulation results, so the model can describe the followed water flow. The results provided the theoretical foundation for the local applica-lion.
    THE METHOD OF ASCERTAINING THE HORIZENTAL WELL'S REASONABLE POSITION IN GAS一CAP RES-ERVOIR
    RAO Zheng ; WU Feng LI Xiao-ping.
    2006, 28(1):  32-34.  DOI: 10.3863/j.issn.1000-2634.2006.01.009
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    Utilize mirror image reflect and potential function's princi-ple of superposition,priority elicit any point's potential function in gas-cap reservoir,then fetch the bottom potential difference and output equation of horizontal well in gas-cap reservoir,therefore we studied the influence of the horizontal well position to production rate of a horizontal well critical rate and gas migra-lion time in gas-cap reservoir, so obtain the horizontal well's reasonable position in gas-cap reservoir.
    THE RESEARCH OF OPTIMAL METHOD TO AD]UST THE DEVELOPMENT OF HEAVY OIL BOTTOM WA-TER RESERVOIR
    MENG Li-xin REN Bao-sheng.
    2006, 28(1):  35-38.  DOI: 10.3863/j.issn.1000-2634.2006.01.010
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    There are mainly complicated fault block oil reservoirs with bad physical property and high heterogeneity on account of the affectation of depositional environment in eastern oilfield of our country. NgI oil layer team in fault block 3 of Yang Sanmu oil-field is complicated fault block viscous and crude basal water
    reservoir. It has been exploited for about 30 years however the recovery ratio is at present below eight percent and the produc-lion effect is badly. The paper puts forward the adjusting strategy of drilling crowding horizontal well and crowding straight well ac-companied by measures of integrally excavating producing poten-fiat for oil or water wells, through elaborate reservoir description and research on remaining oil distribution making certain oil lay-
    er and remaining oil distribution in three一dimensional space. The successful drilling and exploration of Yang Hl well makes the strong base for next adjustment and potential excavating and provides referenced signification for the producing of the same type reservoirs to some extent.
    MODEL OF INTERFERENCE TESTING WELL OF THE HEAVY OIL RECOVERY WITH HEAT LOSS
    YU Jia JIA Yong-lu LIU Yong-liang et al.
    2006, 28(1):  39-42.  DOI: 10.3863/j.issn.1000-2634.2006.01.011
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    Steam flooding is an important recovery of heavy oil reser-voir. An analytical model of interference in thermal oil recovery for two region composite reservoir with heat loss was presented,and the solution of the problem in Laplace Space was discussed,thus the type-curves which were used to perform a sensibility a-nalysis were obtained. It provided the reliable data for the heavy
    oil recovery.
    APPLICATION AND APPRAISAL OF THE REMAIMNG OIL SATURATION MONTTOR TECHNOLOGY IN THE HENAN LIGHT OIL FIELD
    DANG Yong-feng WANG Cheng LI Ai-hong et al.
    2006, 28(1):  43-45.  DOI: 10.3863/j.issn.1000-2634.2006.01.012
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    During the high water一cut later stage, the main parame-ters have changed very greatly such as underground oil state and permeability etc, and it was not only concerned with the appraisal index of oil reservoir store layer and developed level ,but also the choice of the developing way and the adjustment direction in the future were determined. Thus , Henan oilEield successively
    introduced the new logging technology such as the remaining oil saturation-RMT, PND-S, boron neutron life-span logging. It owns the different style for evaluating and describing the rich oil area and layer segment in different oil reservoirs when it was used in monitor scene and at the same time it provided the technical support for measure of increasing oil，production stabiliza-
    lion and water cut controlling in oilfield.
    APPROXIMATE SOLUTION OF MOVING-BOUNDA-RY PROBLEM UNDER TIC ACIDIFYYING
    HU Qi-hua WU Xiao-qing.
    2006, 28(1):  46-48.  DOI: 10.3863/j.issn.1000-2634.2006.01.013
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    In this paper, a moving-boundary problem occurring under the acidifying was discussed, which was transformed into a coupled piroblem of an initial-boundary value problem of nonlinear parabolic equation and an initial value problem of di13'erential equation. Then, the full discrete scheme was given.

    STUDY OF THE SOLID PRECTIPATION DETER MINED BY ULTRASONIC
    ZHANG Wei GUO Ping QIAO Ying et al.
    2006, 28(1):  49-51.  DOI: 10.3863/j.issn.1000-2634.2006.01.014
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    Up to now the way of measuring solid precipitation tempera-tore is by the laser. 'This way is only fit to the light and transpar-ence oil, but can not measure the black oil because the light is not able to penetrate it. The solid precipitation determinedul-trasonic was studied in the paper, using diesel oiI as the solvent,measuring its separating temperature in the diesel oil with the
    different consistency after the paraffine being heated and dis-solved in the diesel oil. Discovering by the experiment that was the paraffine's precipitation temperature increases with its consistency increasing, on the other hand, the velocity of ultrasonic spreading in the oil increased with the paraffine's consistency increasing and decreased with the temperature increasing. The experiment also discovered that the temperature decreased very slowly and even didnt decline because that the wax precipitation was a exothermic process, and the length of horizontal beeline was appeared on -the curve of ultrasonic spreading time.
    油气化学工程与化工
    THE DETERMINATION OF WATER CONTENT AND BOUND WATER TYPE ON HYDRO-CLAY SURFACE BY THERMAL-WEIGHTLESSNESS
    WANG Ping-quan CHEN Di-kui.
    2006, 28(1):  52-55.  DOI: 10.3863/j.issn.1000-2634.2006.01.015
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    Thermal-weightlessness is utilized to determine the type boundary line and relative content of bound water on montmoril-lonite and the results of isothermal adsorption have been tom-pared. The results show that each water relative content and total water mass on hydro-montmorillonite场the method are incon-sistent to them by isothermal adsorption. Thermal weight loss a-nalysis ( 25~250`0)results show that water on hydro-mont-morillonite is free water, loose bound water and sirong bound water which respectively corresponding to the water loss in 25-75oC，75~120oC，and 120~230oC.According to thermal-weightlessness regularity(25~250oC)，it also has two clear turning points which are plp。p/ps=0.9~0.98，the two turning points are the-special humidity of clay一water system. The rela-
    five vapor pressure 0. 9 is the boundary line between the strong bound water and the loge bound water(osmotic bound water ) on clays, the relative vapor pressure 0. 98 is the boundary line between the loge bound water and free water on clays. The method verifies the "two special humidity" by isothermal adso p-lion and the boundary line of bound water on clays.

    EFFECT OF THE WETTABILITY OF DRILLING FLUID ONAND II INTERFACES IN CEMENTING JOB
    SHAH Gao -jun CUI Mao-rang ZHANG Yun-yi et al
    2006, 28(1):  56-58.  DOI: 10.3863/j.issn.1000-2634.2006.01.016
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    Used self-designed HTHP core filtration simple apparatus, similarly simulated borehole conditions to form mud cake,and examined shear cementing strength between~and cement slurry iwnot cleaning, cleaning, clearing and cleaning condilions. Moreover, used metal stick to simulate casing and didcorresponding experiment. The result was shown that the effect of the wettability of drilling fluid on cementing strength of I and II interfaces in cementing job was enormous; compered to wate-base drilling fluid, the interface cementing sirenformedfrom oil-base drilling fluid decreased by 15%.Consequently ,
    it is very necessary to use wettahility reversal agent when designing pad fluid.

    INTERACTION BETWEEN POUR POINT DEPRESSANT AND COMPONENTS OF CRUDE
    JIANG Qing-zhe SONG Zhao -zheng GE Ji -jiang et al.
    2006, 28(1):  59-64.  DOI: 10.3863/j.issn.1000-2634.2006.01.017
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    The interaction between components of crude and pour point depressant has been studied 6y the means of infrared spectra. From experiments , the following conclusions have been obtained that hydrogen bonds have been formed between polar groups of pour point depressant and those of asphalt. High molecular chain of pour point depressant would turn and distort so that plane molecular structures of asphalt decrease to overlap and the amount
    、of asphalt polymers decreases. }On the other hand, hydrogen bonds have been formed between polar groups of pour point depressant and those of resin. High molecular chain of pour point depressant would turn and distort so that the amount of micelles of resin decreases. The pour point of crude is mainly determined by the content and component of wax, resin and pour point delitessant may take patt in the crystal course of wax so that the dimensions and shapes of wax crystals can be changed, and the pour point of crude is depressed.
    STUDY OF DEHYDRATION MECHANISM OF SEC-ONDARY CROSS-LINKED GELS
    LUO Xian-bo PU Wan-fen WU Hai-yan et al.
    2006, 28(1):  65-67.  DOI: 10.3863/j.issn.1000-2634.2006.01.018
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    In this paper, the microcosmic characteristic of performed gels and secondary cross-linked gels with the same concentra-lion has been studied场atomic force microscopy(AFM).By comparing the images of performed gels with those of secondary cross-linked gels , results indicated that the microstructure of
    secondary cross-linked gels presented thick network in which very small holes and bigger irregularly holes were embedded. The width of the biggest irregularly holes was 200 nm. The experimental results were analyzed , and the formation mechanism of bigger irFegularly holes and the mechanism of easier dehydralion has been discussed.
    STUDY OF INTERFACIAL TENSION BETWEEN NNMB/NAPS BINARY SYSTEM AND CRUDE OIL
    YANG Yan PU Wan-fen LIU Yong-bing et al.
    2006, 28(1):  68-70.  DOI: 10.3863/j.issn.1000-2634.2006.01.019
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    Based on the choice of NNMB/NAPS as a new binary sys-tem, the interfacial tension between NNMB/NAPS binary system and crude oil has been studied under imitating conditions of Zhongyuan oilfield, including effects of thickness of NNMB,NAPS and NaCI on the interfacial tension. Results show that NAPS has no obvious effect on the interfacial tension NNMB so-lution，adding NaCI toNNMB/NAPS binary system helps surfactent reduce interfacial tension,the interfacial tension betweenNNMB/NAPS binary system andcrude oil is as low as10-3 mN/m. The new kind of binary system has wide application prospect
    in enhancing oil recovery of high-salty reservoir.
    PREPARATION OF FILTRATE REDUCER FOR CE-MENT SLURRY SULFONATE POLYSTYRENE AND ITS PROPERTY STUDY
    YAN Si-ming GU Sheng-gao MO Jun et al .
    2006, 28(1):  71-74.  DOI: 10.3863/j.issn.1000-2634.2006.01.020
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    The sulfonatedystyrene(SPS ) has been prepared by sulfonation reaction of the polystyrene, which is used as a Fltrate reducer for oil well cement slurry. In addition, we have studied the influence of reaction condition on sulfonate value, the rela-tionship between the amount of API filtrate and sulfonate value
    and the influence of the SPS on cement slurry's propeRies. Resuits have shown that the amount of API filtrate becomes less with the higher sulfonate value of SPS under the same condilions; the prepared SPS has good control over API filtrate; the cement slurry added the SPS becomes well tlowable and more
    thermostable; the· thickening time can be adjusted to 337 minunder 12090 by the regular retarder. The SPS has been proved to have no side effects on cement slurry's other properties.
    A NEW METHOD OF INHBITING CORROSION AND SCALE CONTROL IN OII, FIELD OF PERIOD OF HIGH WATER
    MA Xin-qin JIN Bao-jun ZHANG Yun -zhi et al.
    2006, 28(1):  75-78.  DOI: 10.3863/j.issn.1000-2634.2006.01.021
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    After entering the period of high water cut exploitation in oil field, the corrosion and scale of equipments for oil production is becoming more and more severe, which has been causing a great economic loss of oil field exploitation. Because of the defect ex-fisting in the method of adding the liquid corrosion-scale inhibi-for into wells, we have brought forward a new method of using
    solid darrosion-scale inhibitor for inhibiting contusion and scale. In this paper, we introduce a way of producing solid corrosion-scale inhibitor based on the analysis of the cause of corrosion and scale: The inhibitor has presented a very excellent efficiency when applied on the spot.
    石油与天然气储运工程
    APPLICATION OF ALGORITHMS IN OPTIMAL OPER-ATION OF NATURAL GAS PIPIsLINE NETWORK
    YANG Yi LI Chang-jun .
    2006, 28(1):  79-82.  DOI: 10.3863/j.issn.1000-2634.2006.01.022
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    The mathematical models about the optimal operation of natural gas pipeline network were described, including two kinds of objective functions; one is about maximum return and the other is about maximum flow of pipeline network as well as eight constraint conditions. Three optimized algorithms(linearization optimized algorithm, complex optimized algorithm and feasible
    direction optimized aigorithm) to resolve that models through researching kinds of classic optimized algorithms were determined,and the application program was written. These three optimized algorithms were analyzed and compounded, and the result showed the difference of these three optimized algorithm means's result was about i%.The example showed the linearization optimined algorithm possesses faster searching speed, better result
    and practicability.

    HOW TO RULE OUT THE FALSE ALARM OF OIL PIPELINE LEAK DETECTION BASED RAREFACTION WAVE
    PENG Shan-bi LIAO Ke-xi LI Chang-jun et al.
    2006, 28(1):  83-84.  DOI: 10.3863/j.issn.1000-2634.2006.01.023
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    Tlte main cause which get in the way of pipeline's safety traffic is continually leakage accidents, with the development of automation level, plenty of pipelines realized automatic detection for leakage of pi州ine, however, the rate of the false alarm was very high for several reasons. Aimed at some crude oil pipeline of Xinjiang oilfield，a variety of operating conditions was analyzed in the paper, a lot of ways to rule out the false alarm was presented, it had a good effect in practice.
    石油机械工程及其它
    DISCUSSION FOR THE DIAGNOSIS METHOD OF THE ROD AND TUBE PARTIAL-WEAR OF THE WELL PUMP UNIT IN THE WATER-DRIVE
    KONG Ling-yuan LI Zhen jun.
    2006, 28(1):  85-87.  DOI: 10.3863/j.issn.1000-2634.2006.01.024
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    The critical pressure and the conditions of the rod and tubeoff-center wear were determined through the analysis of the sit-nation-forced of the rod strings of the pumping wells in the water-drive and the application of the bent and curved line differ-ential equation of the roll strings in this paper; the axial force and the axial pressure of the rod was determined with the wave e-
    quation to turn the load picture to the pump dynamometer, and the diagnosis method of the and and tube off center wear of the pumping well in the water-drive was formed, using this method to diagnose whether or not the rod and tube is off-center wear and to diagnose the reasons, and to diagnose 107 oil wells .the diagnosis coincidence rate of the rod and tube off-center wear
    was up to 84.3%，through the contrast and analysis of the 62 oil wells which used this method to treat the rod and tube off-cen-ter wear and has praluced about one check out pump cycle, the average check out pump cycle was prolonged 239 days.
    TEMPERATURE TELEMETER WITH SINGLE-CHiP COMPUTER SYSTEM
    PU Zheng-Berg ZHANG He
    2006, 28(1):  88-90.  DOI: 10.3863/j.issn.1000-2634.2006.01.025
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    The temperature data acquisition and transmission system were intruded in the paper, which was made of temperature sensor circuit, temperature data transform ,data transmitting and receiving，data handling and result displaying by single-chip computer. The characteristics of the system are th$t the new type receiving and transmitting circuit was used and PIC single chip
    computer complete employed to acquire and analyze the data.With smaller volume, less weight and lower cost it may be used as temperature telemeter in the fields of atmosphere environment supervision, in granary and so on.