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    原油粘度变化对水驱油开发动态影响的数学模拟方法

    鞠斌山 樊太亮 王晓冬 张金川

    鞠斌山, 樊太亮, 王晓冬, 张金川, 2006. 原油粘度变化对水驱油开发动态影响的数学模拟方法. 地球科学, 31(3): 378-383.
    引用本文: 鞠斌山, 樊太亮, 王晓冬, 张金川, 2006. 原油粘度变化对水驱油开发动态影响的数学模拟方法. 地球科学, 31(3): 378-383.
    JU Bin-shan, FAN Tai-liang, WANG Xiao-dong, ZHANG Jin-chuan, 2006. Mathematical Simulation of the Effect of the Change in Oil Viscosity on Water Drive Performance. Earth Science, 31(3): 378-383.
    Citation: JU Bin-shan, FAN Tai-liang, WANG Xiao-dong, ZHANG Jin-chuan, 2006. Mathematical Simulation of the Effect of the Change in Oil Viscosity on Water Drive Performance. Earth Science, 31(3): 378-383.

    原油粘度变化对水驱油开发动态影响的数学模拟方法

    基金项目: 

    国家自然科学基金项目 40272052

    详细信息
      作者简介:

      鞠斌山(1970—), 男, 讲师, 主要从事油气田开发工程和油藏描述方面的教学和科研工作.E-mail: jubs2936@163.com

    • 中图分类号: TE319

    Mathematical Simulation of the Effect of the Change in Oil Viscosity on Water Drive Performance

    • 摘要: 为了研究注水开发油田原油粘度升高对开发效果的影响, 通过对实际油藏原油粘度统计, 回归出了原油粘度增长模型.在三维三相黑油渗流模型的基础上, 建立了一个原油粘度随含水和压力变化的油藏渗流数学模型, 并采用有限差分方法建立了相应的数值模型, 采用超松弛法对该模型进行了求解, 用Fortran90语言开发了一个新的数值模拟器.应用该模拟器模拟了不同的原油粘度变化规律对水驱效果的影响, 并与常规模拟器的结果进行了对比.结果表明: 初始水油粘度比为1∶10、含水达到98%时, 粘度增长指数由0增加到0.02, 对应的原油采出程度由44.80%降低到34.29%.目前商业软件中忽略了原油粘度随含水升高而增加的因素, 使得预测的采收率明显偏高.

       

    • 图  1  太平油田原油粘度升高与含水关系

      Fig.  1.  Relation of the increase in viscosity of oil from Taiping oilfield and water-cut

      图  2  含水率和粘度增长指数对原油粘度变化的影响

      Fig.  2.  Effects of water-cut and viscosity increase exponent on the viscosity increase factors

      图  3  油水相对渗透率曲线

      Fig.  3.  Relative permeability curves of oil and water

      图  4  粘度增长指数对日产油水速度(a)和采出程度(b)的影响

      Fig.  4.  Effects of viscosity increase exponent on production rates of oil and water (a) and oil recovery (b)

      图  5  5年后剩余油饱和度分布

      a.b= 0.000;b.b= 0.010;c.b= 0.020

      Fig.  5.  Residual oil distribution after 5 years

      表  1  主要参数

      Table  1.   Main parameters

      表  2  粘度增长指数对含水率和采出程度的影响

      Table  2.   Effects of viscosity increase exponent on water-cut and oil recovery

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    出版历程
    • 收稿日期:  2005-12-13
    • 刊出日期:  2006-05-25

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