北二西东块二类油层水驱开采技术界限及开发效果研究
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摘要
北二西东部区块已经进入了高含水中后期,综合含水率高达85%以上。由于含水率的升高,使得油田的开发难度越来越大。在注水开发后期,影响开发效果的因素十分突出,为了使油藏开发能在最佳的状态下进行,从多种油藏工程方法中选择出适合研究区块注水开发后期开采特征的方法。对注水开发油田的水驱开发效果进行科学的评价,对于进一步搞好油藏注水开发,为实施调整措施提供可靠依据以及提高油藏最终采收率都具有十分重要的意义。
本文以北二西东部区块实际生产动态资料为基础,通过统计回归分析确定了该区块水驱规律曲线类型和产量递减规律,结合水驱规律曲线和产量递减规律建立了含水率、产油量的预测方程。结合层次分析原理、模糊综合评判法和油藏工程等方法,对北二西东块水驱开发效果进行评价。运用logistic旋回模型,建立注水量与产油量的关系方程,进而得到不同含水率条件下合理的注采比以及注水速度与采油速度的关系曲线。针对北二西东区块的实际开发情况,建立了注采比、产液量以及总压差的关系方程,通过分析得到该区块目前开发的合理地层压力。其结果为油藏开发调整方案的制定提供了可靠依据,对油田产量提高具有十分重要的指导意义。
Eastern block of beierxi is at the later stage of high water-cut, having the water-cut up to 85%. Rising of water-cut makes the development of oilfield more and more difficult. At the later stage of water flooding, various problems influencing development effect are especially obvious, in order to make reservoir development in the best conditions, some reservoir engineering methods have been selected to analyze the production features at the later stage of water-injection. Evaluating the water flooding development effect scientifically is of great importance to deepen the water flooding and offer reliable reference of carrying out the measures of exploring the potential reserves as well as increase the oil recovery.
Based on the actual production performance data of eastern block of beierxi, this paper determines the water flooding law curve and the production decline law of the block through statistical regression, and establishes prediction equation of water-cut and oil production. With the principle of hierarchy analysis, the methods of fuzzy comprehensive and oil reservoir engineering, the development effect of the block is evaluated. Through the logistic cyclothem, the equation of water injection and oil production is established. The reasonable injection production rate under the conditions of different water-cut and the curve of water injection rate and oil production are obtained. By establishing the equation of injection production rate, liquid production and total pressure difference, the reasonable formation pressure recently is obtained. Researching the adjusting boundaries of the technological limits has most guiding significance for the adjustment of the exploitation plan, which provide reliable basis for designing adjusting plan of reservoir exploitation.
本文以北二西东部区块实际生产动态资料为基础,通过统计回归分析确定了该区块水驱规律曲线类型和产量递减规律,结合水驱规律曲线和产量递减规律建立了含水率、产油量的预测方程。结合层次分析原理、模糊综合评判法和油藏工程等方法,对北二西东块水驱开发效果进行评价。运用logistic旋回模型,建立注水量与产油量的关系方程,进而得到不同含水率条件下合理的注采比以及注水速度与采油速度的关系曲线。针对北二西东区块的实际开发情况,建立了注采比、产液量以及总压差的关系方程,通过分析得到该区块目前开发的合理地层压力。其结果为油藏开发调整方案的制定提供了可靠依据,对油田产量提高具有十分重要的指导意义。
Eastern block of beierxi is at the later stage of high water-cut, having the water-cut up to 85%. Rising of water-cut makes the development of oilfield more and more difficult. At the later stage of water flooding, various problems influencing development effect are especially obvious, in order to make reservoir development in the best conditions, some reservoir engineering methods have been selected to analyze the production features at the later stage of water-injection. Evaluating the water flooding development effect scientifically is of great importance to deepen the water flooding and offer reliable reference of carrying out the measures of exploring the potential reserves as well as increase the oil recovery.
Based on the actual production performance data of eastern block of beierxi, this paper determines the water flooding law curve and the production decline law of the block through statistical regression, and establishes prediction equation of water-cut and oil production. With the principle of hierarchy analysis, the methods of fuzzy comprehensive and oil reservoir engineering, the development effect of the block is evaluated. Through the logistic cyclothem, the equation of water injection and oil production is established. The reasonable injection production rate under the conditions of different water-cut and the curve of water injection rate and oil production are obtained. By establishing the equation of injection production rate, liquid production and total pressure difference, the reasonable formation pressure recently is obtained. Researching the adjusting boundaries of the technological limits has most guiding significance for the adjustment of the exploitation plan, which provide reliable basis for designing adjusting plan of reservoir exploitation.
引文
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[22] ShokirE.M., Selection and Evaluation EOR Method Using Artificial Intelligence.SPE79163. 2002:1~7.
[23] Vincent., Optimization of the Incremental Development Policy for a Mature Waterflood Project. SPE78579, 2002:1~10.
[24] VanKleefR., Waterflood Monitoring in an Oman Carbonate Reservoir Using a Downhole Permanent Electrode Array, SPE68078, 2001:1~11.
[25] HaitaoLi., A Comprehensive Study on Strategy to improve the Operation and Management of Well Injection System, SPE53987, 1999:1~9.
[26] GulickK.E., Waterflooding Heterogeneous Reservoirs: An Overview of Industry Experiences and Practices. SPE40044, 1998:1~7.
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[28] AbuEIEla., Effects of Stimulating Indigenous Bacteriain Oil Reservoirs on Relative Permeability Curves. SPE75240, 2002:1~13.
[29] NagaseK., A Successful Field Test of Microbial FOR Processin Fuyu Oilfield, China, SPE75238. 2002:4~13
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[31] JayasekeraA.J., Improved Hydrocarbon Recovery in the United Kingdom Continental Shelf: Past,Present and Future. SPE75171, 2002:1~19.
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[35]张虎俊.确定水驱曲线校正系数C的简单方法[J].新疆石油地质,1996,17(3):276~281.
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[41]高有瑞等.模糊综合评判在聚合物驱油区块评价中的应用[J].现代地质,2003,17(2):222~226.
[42]刘秀婷等.用新模型综合评价油田开发效果的探讨[J].断块油气田,2006,13(3):30~35.
[43]冯其红等.一种用于水驱开发效果评价的新方法[J].石油大学学报,2004,28(2):58~60.
[44]蔡厥珩等.评价注水油田注水利用率的一种新方法[J].特种油气藏,2006,13(2):40~42.
[45]张东荣等.利用存水率与水驱指数评价油田注水效果[J].内蒙古石油化工,27:141~143.
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[47]罗承建等.地层压力水平和注采比与含水率的定量关系[J].西安石油学院学报,1999,14(4):33~35.
[48]曾流芳等.孤东七区西馆陶组上亚段63+4层系合理压力水平研究[J].油气地质与采收率,2004,11(2):45~48.
[49]李彦平.注水开发油藏合理压力水平研究[J].新疆石油学院学报,2003,15(3):52~57.
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[51]孙孟茹等.胜坨油田坨28块沙二段9～103层系特高含水期地层压力保持水平研究[J].油气地质与采收率,2003,10(6):37~39.
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[2]秦同洛等.实用油藏工程方法[M].北京:石油工业出版社,1989.
[3]黄炳光,刘蜀知.实用油藏工程与动态分析方法[M].北京:石油工业出版社,1998.9:190~198.
[4]童宪章.油井和油藏动态分析.北京:石油工业出版社[M].1981.
[5]车鑫晖.萨北开发区二类油层三元复合驱开发方式优化研究[J].大庆石油地质与开发,2006,25(增刊),90~92.
[6]陈元千.水驱油田矿场经验分析式的推导及应用.石油勘探与开发[J].1981,No.2.
[7]万吉业.水驱油田的驱替系列及其应用.石油勘探与开发[J].1982,No.6.
[8]张锐.评价预测油田注水效果的一种方法.石油勘探与开发[J].1995,No.4.
[9]俞启泰等.应用生产资料预测可采储量的方法评价.石油学报[J].1987,No.4.
[10]张锐.评价油田注水效果的两种曲线.石油勘探与开发[J].1988,No.5.
[11]方凌云,万新德等.砂岩油藏注水开发动态分析[M].北京:石油工业出版社,1998,30~34.
[12]蔡尔范.油田开发指标计算方法[M].北京:石油工业出版社,1992.
[13]俞启泰.俞启泰油田开发论文集[M].北京:石油工业出版社,1999,12.
[14]陈元千.水驱油田开发指标的预测方法[J].断块油气田,1998,5(3):29~33.
[15] R.K.Guthrie and M.H.Greenberger, The Use of Multiple Correlation Analysis for Interpreting Petroleum Engineering Data Drill and Prod Prac [J]. API(1955), pp130~137.
[16] F.RWright, Field Results Indicate Significant Advances in Water-flooding [J]. JPT (OCT.,1958), PP12.
[17] M.Parts, C.S.Matthews, Prediction of Injection Rate and Production History for Multi-fluid Five-spot Floods [J]. JPT (May, 1959) pp98.
[18] JerichoLP, KewenLi, RolandNH. Application of a New Mechanistic Decline Curve Method to Kern County OilFields. SEP90212, 2004:1~10.
[19] MingzhenWei, AndrewHS. Predict Injection Profile of an Injector Using a Soft Computing Method. SPE88798. 2004:1~8.
[20] KewenLi., A Decline Curve Analysis Model Based on Fluid Flow Mechanisms. SPE83470, 2003:1~10.
[21] Noirot J.C., Water Injection and Water Flooding Under Fracturing Conditions. SPE81462, 1983:1~6.
[22] ShokirE.M., Selection and Evaluation EOR Method Using Artificial Intelligence.SPE79163. 2002:1~7.
[23] Vincent., Optimization of the Incremental Development Policy for a Mature Waterflood Project. SPE78579, 2002:1~10.
[24] VanKleefR., Waterflood Monitoring in an Oman Carbonate Reservoir Using a Downhole Permanent Electrode Array, SPE68078, 2001:1~11.
[25] HaitaoLi., A Comprehensive Study on Strategy to improve the Operation and Management of Well Injection System, SPE53987, 1999:1~9.
[26] GulickK.E., Waterflooding Heterogeneous Reservoirs: An Overview of Industry Experiences and Practices. SPE40044, 1998:1~7.
[27] MamgaiD.C., Estimation and Improving Recovery under WaterFlood: A Case History from Ankleshwar Field. SPE38066, 1987:425~435.
[28] AbuEIEla., Effects of Stimulating Indigenous Bacteriain Oil Reservoirs on Relative Permeability Curves. SPE75240, 2002:1~13.
[29] NagaseK., A Successful Field Test of Microbial FOR Processin Fuyu Oilfield, China, SPE75238. 2002:4~13
[30] SaavedraN.F. Laboratory Testing of Polymer Flood Candidates: SanFrancisco Field. SPE75182, 2002:1~7.
[31] JayasekeraA.J., Improved Hydrocarbon Recovery in the United Kingdom Continental Shelf: Past,Present and Future. SPE75171, 2002:1~19.
[32] BabadagliT., EOR Possibilities for Development of a Mature Light-Oil Reservoir in Oman. SPE72110, 2001:1~15.
[33]高文君,徐君.常用水驱特征曲线理论研究[J].石油学报,2007,28(3):89~92.
[34]李丽丽,宋考平,等.特高含水期油田水驱规律特征研究[J].石油钻探技术,2009,37(3):91~94.
[35]张虎俊.确定水驱曲线校正系数C的简单方法[J].新疆石油地质,1996,17(3):276~281.
[36]陈元千,陶自强.高含水期水驱曲线的推导及上翘问题的分析[J].断块油气田,1997,4(3):19~24.
[37]王文环.水驱特征曲线在特高含水油藏提高采收率研究中的应用[J].断块油气田,2003,10(1):33~36.
[38]俞启泰.广义水驱特征曲线公式的推导[J].新疆石油地质,1996,17(3):260~266.
[39]张兴焰,樊继宗等.模糊原理综合评判油田注水开发[J].特种油气藏,2002,9(1):34~36.
[40]依呷,唐海等.模糊综合评判法确定油藏水驱开发潜力的应用和研究[J].内蒙古石油化工,2006,(3):96~98.
[41]高有瑞等.模糊综合评判在聚合物驱油区块评价中的应用[J].现代地质,2003,17(2):222~226.
[42]刘秀婷等.用新模型综合评价油田开发效果的探讨[J].断块油气田,2006,13(3):30~35.
[43]冯其红等.一种用于水驱开发效果评价的新方法[J].石油大学学报,2004,28(2):58~60.
[44]蔡厥珩等.评价注水油田注水利用率的一种新方法[J].特种油气藏,2006,13(2):40~42.
[45]张东荣等.利用存水率与水驱指数评价油田注水效果[J].内蒙古石油化工,27:141~143.
[46]王国先等.含水采出比在评价油田水驱开发效果中的应用[J].新疆石油地质,2007,28(6):733~735.
[47]罗承建等.地层压力水平和注采比与含水率的定量关系[J].西安石油学院学报,1999,14(4):33~35.
[48]曾流芳等.孤东七区西馆陶组上亚段63+4层系合理压力水平研究[J].油气地质与采收率,2004,11(2):45~48.
[49]李彦平.注水开发油藏合理压力水平研究[J].新疆石油学院学报,2003,15(3):52~57.
[50]孙波等.杏北开发区二次加密采油井平均地层压力计算方法研究[J].油气井测试,2000,9(1):12~17.
[51]孙孟茹等.胜坨油田坨28块沙二段9～103层系特高含水期地层压力保持水平研究[J].油气地质与采收率,2003,10(6):37~39.
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