| 基于EnKF的油藏自动历史拟合方法对三相相对渗透率的反演 |
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| 引用本文： | 王玉斗,李茂辉.基于EnKF的油藏自动历史拟合方法对三相相对渗透率的反演[J].西安石油大学学报(自然科学版),2011,26(4). |
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| 作者姓名： | 王玉斗 李茂辉 |
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| 作者单位： | 中国石油大学(华东)物理科学与技术学院,山东东营,257061 |
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| 基金项目： | 山东省自然科学基金项目“河流相油藏历史拟合的迭代集合卡尔曼滤波与核方法耦合研究”(编号:ZR2010EM053); 中央高校基本科研业务费专项资金项目“基于集合Kalman滤波的河流相油藏自动历史拟合及反演方法研究”(编号:10CX04042A) |
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| 摘 要： | 为解决标准集合Kalman滤波在非线性油藏反演中更新模型与更新动态场的统计不一致性问题,提出了一种改进的集合Kalman滤波方法,历史拟合过程中只对模型参数进行更新,然后利用更新的模型参数从初始状态重新运行油藏数值模拟软件进行下一拟合时刻的生产预测,协方差矩阵由从时间零运行油藏数值模拟软件得到的预测数据进行计算.理论证明了该方法与集合随机最大似然法的一致性.对某油藏的相对渗透率曲线进行了估计,比较了标准集合Kalman滤波方法与改进方法的参数估计及生产预测结果.由于保证了更新模型与更新动态场的一致性,改进的集合Kalman滤波方法得到了更好的参数估计和生产预测结果.
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| 关 键 词： | 储层历史拟合 集合Kalman滤波 储层参数估计 储层生产预测 |
Inversion of three-phase relative permeability using the automatic reservoir history fitting method based on ensemble Kalman filter |
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| WANG Yu-dou,LI Mao-hui,Dongying ,Sh,ong,China.Inversion of three-phase relative permeability using the automatic reservoir history fitting method based on ensemble Kalman filter[J].Journal of Xian Shiyou University,2011,26(4). |
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| Authors: | WANG Yu-dou LI Mao-hui Dongying Sh ong China |
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| Affiliation: | WANG Yu-dou,LI Mao-hui(Faculty of Physics Science & Technology,China University of Petroleum(East China),Dongying 257061,Shandong,China) |
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| Abstract: | An improved ensemble Kalman filter is presented for solving the inconsistency between the updated model and the updated dynamical variables in the nonlinear reservoir inversion using standard ensemble Kalman filter.Only are the model parameters updated in this modified method in the process of reservoir history fitting,and the reservoir production at next moment can be predicted by rerunning the simulator from initial time using the updated model parameters.The covariance is calculated from the prediction d... |
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| Keywords: | reservoir history fitting ensemble Kalman filter reservoir parameter estimation reservoir production prediction |
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