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特低渗透泉头组地层与油田开发研究
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摘要
特低渗透油藏开发受储层物性和裂缝双重因素影响,表现出井网适应性差、采油速度低、储量动用程度低等特征。为解决这一难题,论文在储层研究、水平井与直井联合井网研究、水平井渗流规律研究基础上,大胆实践,得出特低渗透油藏水平井注水、直井采油联合井网开发是可行的这一关键性结论,为该类型储量的有效动用开辟了一条新路。通过论文认真的研究与反复实践证明:泉头组地层是以陆上分流河道沉积为主的河流—三角洲沉积体系;水平井注入能力明显高于同区块直井,但对于特低渗透裂缝发育程度较差的致密储层注水压力仍较高;水平注入井附近的等压降线为近似的椭圆形,有利于形成线性驱替;采用水平井注水,井网波及效率明显高于直井注水;水平井注水反七点井网最优,注采井距小于129m,水平段方向与裂缝方向平行更有利于提高驱替效率;均质油藏水平段应尽量位于油层中部,水平井射孔应采用变密度或不等距,提高中部流量,形成有效线性驱替,提高驱替效果。
Ultra-low permeability reservoir development get effect from the reservoir properties and fractures in the dual factors,and shows that bad well pattern adaptability,low production rate,low extent of the use of reserves and so on.To solve these problems,starting with the historical evaluation,the paper has found the direction of research.At the same time,we do reservoir research by using seismic,geological and logging synthetical descripsion of reservoir,and use sedimentary time unit subdivision comparative method to research sedimentary characteristics;based on using the productivity equation with starting pressure gradient which Cheng Lu hase deduced for heavy oil reservoir to derive limit well spacing in different forms of well net,we optimize reasonable well net by using the means of numerical simulation.;by comparing productivity equation between drifting stable state horizontal well and common consummate vertical well in the condition of Darcy flow to get formula for calculating the equivalent well diameter to draw the conclusion that horizontal part locates central reservoir is optimal by theory proof and mechanism simulation.We study the characteristics of flow and pressure distribution along the wellbore by solving the coupled flow equation between horizontal pipe flow and three-dimensional seepage flow,then get the pressure loss curve along wellbore through the numerical simulation,and determine reasonable form of perforation finally.Based on theoretical research,the technical and economic limit of the test was further evaluated.It is feasible to take united well net of ultra-low permeability horizontal well implantation and vertical well production to adjust the development through field test.This key conclusion provides a new method for making effective use of this type of reserves.
     Research and practice showing:
     (1) Yang Da Cheng Zi oil reservoir has four geologic characteristics in Yushulin Oilfield of Daqing:The reservoir type is the compound lithology reservoir with fault and it's burial depth is deep;Sedimentary characteristics are delta depositional system which are mainly continental distributary fluvial sediment with small scale of sand body;the oil reservoir is mainly ultra-low permeability and low degree of natural fracture;geological reserves are low-abundance.
     (2) Injection ability of horizontal well is clearly higher than that of vertical well.Water can not be injected into the same perforation formation of the horizontal well in vertical well.At the initial stage,the horizontal well can be injected into 104m3 water per day in the pressure of 20 MPa.But to ultra-low permeability formation,high pressure is needed whether adopting horizontal well water injection or vertical well water injection.
     (3) Comparing with the vertical injection well,the line of pressure drop is approximately ellipse near the horizontal injection well which is better to form the linear displacement.
     (4) Formation pressure of periphery oil well rises from 12.28MPa to 17.66MPa after horizontal well injecting water,and production of oil well rises dramatically.However,before horizontal well injecting water those oil wells' oil production was nearly zero.After effective horizontal injection,three oil wells produce averagely 3.4 ton oil per day.At present,the oil production keeps steadily 1.6 ton per day.The development was apparently improved in the test zone.
     (5) When taking horizontal well water injection,sweep efficiency are significantly higher than vertical well whether oil is produced by vertical well or horizontal well.According to numerical simulation results,the sweep efficiency is between 88%and 92%when taking horizontal well to inject water,yet it is between 67%and 75%when taking vertical well.
     (6) Through united net research on horizontal and vertical wells,anti-seven horizontal wells injection was thought to be the best well spacing while injector producer distance is less than 129m in the 141 Dong test zone,it is more conductive to improve the efficiency of displacement when horizontal direction paralleling to the direction of crack.
     (7) Horizontal segment of homogen reservoir should locate in the central part of the reservoir.When injection volume is less than 31 cubic meters per day in the 141 Dong test zone,it is laminar flow in the horizontal segment,and pressure loss is very small just 0.3MPa in the whole horizontal segment.Seeing from fragment absorb water in the horizontal segment,adsorb water volume is low in the center part,with high water-absorbent in both ends.When injection volume is more than 31 cubic meters per day,it is turbulence flow in the horizontal segment,with higher injection volume in the horizontal segment heel and lower injection volume in the horizontal segment toe,but on the whole,the central flow is still low.Therefore,horizontal well perforation should take variable density or non-equidistant to increase central flow in order to form linear displacement to improve effect.
     We get the same idear about the economic effect that horizontal well better than vertical well. But it is still controversial that which is better make horizontal well as injection water or production.The paper thinks it depends on geology and development condition.,so the horizontal well can be made as injection wells for Yang Da Cheng Zi ultra-low permeable reservoir in the Yushulin oil fields.The reasons are as follows:
     Firstly it is very difficult for vertical well to inject water.However,horizontal well has the ability of injection.
     Secondly it can take advantages of section injection and point production.
     Thirdly it can to exert the overall impact of well group with the horizontal injection wells as the core,and we have seen good technique and economic effect.
     From development test of horizontal well injection,a set of theoretical methods and technology has been formed,which can guide development of ultra-low permeability reservoirs.It is expected that fifteen horizontal injection wells and forty vertical wells will be distributed in East Block 14 of Yushulin Oilfield of Daqing.The adjustment scheme can be applied in similar blocks such as East Block 12,Shu Block 16 and Shu Block 322.The total area is 37.37km2,and the geological reserves are 25.6081 million ton.For improving the overall development effect of Yushulin Oilfield of Daqing,the scheme will play an important role.Meanwhile,it has great guiding significance for reservoirs with unused reserves in optimum well pattern pattern design and oil reservoir in adjustment of development.
引文
[1]周锡生,李莉,韩德金.大庆油田外围扶杨油层分类评价及调整对策[J].大庆石油地质与开发,2006,25(3):35-37.
    [2]王荣华,黄福堂,姜洪启.松辽盆地陆相砂岩储集层特征[J].大庆石油地质与开发1998,17(5):8-11.
    [3]郭会坤,高彦楼,吉庆生.特低渗透扶杨油层有效动用条件研究[J],大庆石油地质与开发,2004,23(3):38-40.
    [4]李莉,韩德金,周锡生.大庆外围低渗透油田开发技术研究[J].大庆石油地质与开发,2004,23(5):35-37.
    [5]黑龙江省石油学会油藏工程学会.大庆油田油藏工程论文集[C].北京:石油工业出版社,1995:241-248,275-279,311-320,392-395.
    [6]张朝琛.油田注水开发工程方法[M].北京:石油工业出版社,1984.
    [7]许岱文,郑桂荣等.1996年第二届国际SPE/CIM水平井技术会议论文集[C].北京:石油工业出版社,1997:98-113,366-383.
    [8]万仁溥.中国不同类型油藏水平井开采技术[M].北京:石油工业出版社,1997:303-313,314-315,357.
    [9]王家宏,罗治斌,赵明.中国水平井应用实例分析[M].北京:石油工业出版社,2003:1-21,138-163,209-224.
    [10]胡博仲,周望,徐志良.国外近期采油工程技术选编[M].哈尔滨:黑龙江人民出版社,1995:47-58
    [11]Joshi S D.Augmentation of well production using slant and horizontal wells[C].SPE,15375,1986.
    [12]Babu D K.Odeh A S.Productivity of a horizontal well[C].SPE,18298,1988.
    [13]李道品.论低渗透油藏开发的主要矛盾和改善途径[M].世界石油工业,1998:44-48.
    [14]邱勇松,杨铁军,冯大臣等.大庆油田开发技术研究实例[M].北京:石油工业出版社,2004:53-68.
    [15]大庆石油管理局勘探开发研究院.大庆油田勘探开发研究论文集[C].北京:石油工业出版社,1995:48-59,132-146,176-188.
    [16]刘招君,董清水,王嗣敏,朱建伟,郭巍.陆相层序地层学导轮与应用[M].北京:石油工业出版社,2002:100-105.
    [17]杨万里.松辽陆相盆地石油地质[M].北京:石油工业出版社,1985:26-34.
    [18]曹成润,黎文清.石油构造地质学[M].哈尔滨:黑龙江科学技术出版社,1992:6-8.
    [19]徐开礼,朱志澄.构造地质学[M].北京:地质出版社,1989:129-131.
    [20]温献德.地史学[M].东营:中国石油大学出版社,1998:12,19-21,222-224.
    [21]叶得泉,黄清华,张莹等.松辽盆地白垩纪介形类生物地层学[M].北京:石油工业出版社,2002:53-68.
    [22]Magoon L B.The petroleum system:from source to trap[C].AAPG Memoir 60,1994.
    [23]吴元燕,吴胜和,蔡正旗.油矿地质学[M].北京:石油工业出版社,2005:177-206,257-285,296-324.
    [24]徐开礼,朱志澄.构造地质学[M].北京:地质出版社,1989:129-132.
    [25]于兴河.碎屑岩系油气储层沉积学[M].北京:石油工业出版社,2002:64,145-183.
    [26]刘招君,董清水,王嗣敏等.陆相层序地层学导论与应用[M].北京:石油工业出版社,2002:92-154.
    [27]胡玉双,李黎明.层序地层学在松辽东部断陷有利勘探区带预测中的应用[J].大庆石油地质与开发,1999,18(2):10-12.
    [28]宋万超,刘波,宋新民.层序地层学概念、原理、方法及应用[M].北京:石油工业出版社,2003:222-260
    [29]Galloway,W.E..Genetic stratigraphic sequences in basin analysis[C].AAPG,1998,(73):125-142.
    [30]Vail,P.R.et al..The stratigraphic signatures of tectonics,Eustasy and sedimentology-An overview,Cycles and Events in stratigraphy,Berlin Heidlberg:Springer-Verlag,1991.
    [31]Van Wagoner,J,C.et al..Siliciclastic sequence stratigraphy in well logs,core and outcrops:Concepts for highresolution correlation of time and facies[C],AAPG,1990.
    [32]Emery D and Myers K.Sequence stratigraphy.Blackwell Science,1996.
    [33]Miall A D.The geology of stratigraphic sequences,Berlin Heideberg.Springer-Verlzg:1996.
    [34]Posamentier H W.Variations of the sequence stratigraphic model:past concepts,Present understandings,and future direction[C].AAPG Bull,1991,75(3):955-956.
    [35]Smith D G and Pntnam P E.Anastomosed river deposits,modern and ancient examples in Alberta.Can.J.Earth Sci,1980,17:1396-1406.
    [36]Schumm S A.River response to base-level changes:Implication for sequence stratigraphy.Journal of Geology,1993,101(3):279-294.
    [37]Sloss L L.Strtigraphic models in exploration[C].AAPG Bull,1962,(46).
    [38]Wilson C.Sequence stratigraphy:an intruduction.Geoscientist,1991,1(1).
    [39]Galloway W E.1989.Genetic stratigraphic sequences in basin analysis:architecture and genesis of flooding surface bounded depositional units[C].AAPG,125-142.
    [40]吴因业,顾家裕.油气层序地层学[M].北京:石油工业出版社,2002:72-90.
    [41]刘本培,蔡运龙.地球科学导论[M].北京:高等教育出版社,2003:181-184.
    [42]何更生.油层物理[M].北京:石油工业出版社,1994:56-62.
    [43]吕晓光,李洁.油气储层表征技术[M].北京:石油工业出版社,2005:86-98.
    [44]温献德.地史学[M].东营:中国石油大学出版社,2006:32-33.
    [45]于兴河.碎屑岩系油气储层沉积学[M].北京:石油工业出版社,2002:49-64.
    [46]Chioccif,L..Very high-resolution seismics as a tool for sequence stratigraphy reply appled to outcrop scale-examples from eastem Tyhenian margin Hololcene/Pieistocene deposits[C].AAPG,1994.
    [47]Prosser S.Rift-related linked depositional systems and their seismic expression.Geological Society Special Publication 71,1993:35-66.
    [48]巩正荣,张宝玺,马启贵.三维地震资料解释[M].鞍山:鞍山市新闻出版局,1993:58-102.
    [49]谭海芳,中梅英,张广兵等.合成地震技术[J].断块油气藏,1998,5(6):58.
    [50]徐绍刚.对地震勘探中极性与层位标定的几点看法[J].大庆石油地质与开发,1993,12(12):42-43.
    [51]吴元燕,吴胜和,蔡正旗.油矿地质学[M].北京:石油工业出版社,2005:165-168.
    [52]薛培华.河流点坝相储层模式概论[M].北京:石油工业出版社,1991.
    [53]亓校湘,马德勇,刘雷等.河道砂体内部夹层特征研究[J].大庆石油地质与开发,2005,24(3):14-15.
    [54]宫文超,刘桂芬,曹维政等.榆树林油田储层敏感性评价实验研究[J].大庆石油地质与开发,1993,12(3):54-56.
    [55]胡允栋,关涛.储量参数误差对储量精度的影响[J].石油勘探与开发,1998,25(6):72.
    [56]毕海滨,查全衡,王永卓.提高储量评估水平的三大地质要素[J].石油学报,2004,25(1):28-29.
    [57]刘丁增.多油层砂岩油田开发[M].北京:石油工业出版社,1986:71-74.
    [58]刘翔鹗,徐文芹,王亚华等.波及技术手册[M].北京:石油工业出版社,1996:7-12.
    [59]陈涛平,胡靖邦,石油工程[M].北京:石油工业出版社,2000:35-43,213-236.
    [60]朗兆新,张丽华,林松等.水平井与直井联合开采问题-五点法面积井网[J].石油大学学报,1993,17(6):50-55.
    [61]Babu,D.K.and Odeh,A.S..Productivity of A Horizontal WelI,SPE Res.Eng.,November,1989,417-428.
    [62]Joshi S D,Giger F M,Babu D K,et al.水平井油藏工程基础[J].张宏逵,编译.油气田开发工程译丛,1991,8:2-11.
    [63]程林松,李春兰,朗兆新,等.分支水平井产能的研究[J].石油学报,1995,16(2):49-55.
    [64]周德华,葛家理.应用等值渗流阻力法建立面积井网产能方程[J].石油实验地质,2004,26(6):594-596.
    [65]曲德斌,葛家理,王德民.水平井与直井联合面积布井的开发理论研究[J].石油勘探与开发,1995,22(1):35-38.
    [66]葛家理,王德民,曲德斌.水平井与直井联合面积布井的开发理论研究[J].石油勘探与开发,1995,22(2):47-50.
    [67]姚约东,葛家理,何顺利.水平井五点井网产能计算研究[J].石油大学学报,1999,23(3):41-43.
    [68]赵春森,肖丹凤,宋文玲等.水平井与直井交错井网优化方法[J].石油勘探与开发,2005,32(1):119-122.
    [69]程林松,张健琪,李春兰.水平井井网整体开发产能研究[J].石油钻采工艺,2002,24(2):39-41.
    [70]陆程,王晓冬,罗万静等.稠油油藏水平井极限技术井距的确定方法[J].特种油气藏,2006,13(6):61-63.
    [7l]宋付权,刘慈群,张盛宗.低渗透油藏中水平井的产能公式分析[J].大庆石油地质与开发,1999,18(3):33-35.
    [72]Ucan S.Simulated Annealing for Relative Permeability and Capillary Pressure From Unsteadystate Non-Darcy Displacement[C].SPE 26670.
    [73]Giger F M.Horizontal wells production techniques in heterogeneous reservoir[C].SPE,13710,1985.
    [74]刘月田,张吉昌.各向异性油藏水平井网稳定渗流与产能分析[J].石油勘探与开发,2004,31(1):94-96.
    [75]Davlau,F.et al.Pressure Analysis for Hrizontal Wells.SPEFE Dec,1988:716-724.
    [76]Ozkan,E.et al.Hrizontal Wells Pressure Analysis.SPEFE Dec,1989:567-575.
    [77]Novy R A.Pressure drops in horizontal welIs.[C].SPE,24941,1992.
    [78]Daviau,F.,Mouronval,G.,Bourdarot,G.,and Curutchet,P..Pressure Analysis for Horizontal Wells.SPEFE,Dec.1988:716-724.
    [79]Ozkan,E.,Raghavan,R.and Joshi,S.D..Horizontal Well Pressure Analysis.AIME,1989:287,567-575.
    [80]Kuchuk,F.J.,Goode,P.A.,Brice,B.W.,Sherrard,D.W.,and Thamby-nayagam,R.Mo.Pressure Transient Analysis for Horizontal Wells.JPT,August,1990:974-979,1028-1031.
    [81]Kuchuk F J,Goode P A,Wilkinson D J,et al.Pressure transient behavior of horizontal well with and without gas cap or aquifer[C].SPE,17413,1988.
    [82]Ozkan E,Raghavan R.Horizontal well pressure analysis[C].SPE,16378,1987.
    [83]吴淑红,于立君,刘翔鄂等.热采水平井变质量流与油藏渗流的耦合数值模拟[J].石油勘探与开发,2004,31(1):88-90.
    [84]熊友明,潘迎德.各种射孔系列完井方式下水平井产能预测研究[J].西南石油学院学报,1996,18(2):56-62.
    [85]吴洪彪,毕艳昌,刘淑芬.注水开发油田地层压力评价中的问题分析[J].大庆石油地质与开发,2001,20(6):34-36.
    [86]付剑,山永兰.注入剖面测井存在的问题及解决途径[J].大庆石油地质与开发,2004,23(1):70.
    [87]李浩,孟宪君,孙国红.低渗透油田经济可采储量评价方法研究[J].大庆石油地质与开发,2000,19(6):31-33.
    [88]郭肖,杜志敏.非均质性对水平井产能的影响[J].石油勘探与开发,2004,31(1):91-93.
    [89]王晓冬,刘慈群.水平井产量递减曲线及其应用方法[J].石油勘探与开发,1996,23(4):50-53.
    [90]宋付权,刘慈群.低渗透油藏水驱采收率影响因素分析[J],大庆石油地质与开发,2000,19(1):30-32.
    [91]张永庆,李蕾,凌雨等.储层预测与监测技术在水平井地质导向钻井中的应用[J].大庆石油地质与开发,2004,23(6):53-54.
    [92]赵永胜,陆蔚刚,兰玉波.多层砂岩油田水驱开发的合理注水压力[J].大庆石油地质与开发,2000,19(6):21-24.
    [93]KLEP PE J,MORSE R A.Oil Production from Fractured Reservoirs by Water Displacement[C].SPE,5083,1974.
    [94]KLEINSTEIBER,STANLEY W.Analysis Well Production Data Using Combined Type Curve and Decline Analysis Concepts[C].SPE,492220.
    [95]BRADLEY M E.Wood A R O.Forcasting Oilfield Economic Performance[J].SPT,1994.

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