多注多采条件下水驱油藏区域影响估计方法  

Estimation of the regional impact on multi-injectors and multi-producers of water-flooded reservoirs

作　　者：于镝[1] 霍凤财[1] 张雯[2] 胡绍彬[3] 孙兰佳 

机构地区：[1]东北石油大学电气信息工程学院,黑龙江大庆163318 [2]中国石油大学(北京)石油工程学院,北京102200 [3]东北石油大学石油工程学院,黑龙江大庆163318

出　　处：《东北石油大学学报》2015年第2期102-107,11,共6页Journal of Northeast Petroleum University

基　　金：国家青年科学基金项目(51404074);中国石油科技创新基金研究项目(2012D-5006-0205);东北石油大学青年科学基金项目(2012QN125)

摘　　要：为评估多注多采条件下注水井对水驱油藏区域产量的影响,提出区域影响定义并建立多注多采情况下的井网模型,为避免滤波过程中出现被估参数为负值的情况,采用改进的扩展Kalman滤波方法,应用注水量和采液量的实时数据给出区域影响的最优估值;通过河道沉积非均质油藏反九点法开发井网的ECLIPSE模拟仿真,验证方法的有效性.该方法可为注采井网调整及注水井调剖、采油井堵水及酸化压裂等油层改造提供指导,与传统的地质研究与开采动态分析相结合的估计方法相比,具有简单高效的特点.Estimation methods of regional impact are discussed for multi-injectors and multi-producers of heterogeneous water-flooded reservoir.For the case of multiple injectors and multiple producers,the well pattern model is established and the definition of regional impact is proposed.Based on the injection rate and the production rate,the optimal estimation of regional impact is obtained with modified Extended Kalman Filter so as to avoid the negative estimation parameter in the process of filtering.At last the results of ECLIPSE simulation research verify the effectiveness of developed method for inverted nine spot well pattern within the river channel deposition in heterogeneous reservoir.This method can provide guidance for the injection production well pattern adjustment and profile control in water injection well,oil well water plugging and reservoir reconstruction such as acidizing and fracturing.Moreover,compared to the traditional estimation method combined with the geological research and exploitation dynamic analysis,it is simpler and more efficient.

关 键 词：水驱油藏 扩展Kalman滤波 区域影响估计 多注多采情况 

分 类 号：TE341[石油与天然气工程—油气田开发工程]