摘要
注水油田在长期的注水开发中,储层的岩石孔吼结构及油水相对运动关系会发生变化,从而对油井提液的效果预测产生一定的影响。针对这个问题,通过相对渗透率的指数表达式进行推导,利用单井的水驱曲线直线段部分的生产数据,求得油水相指数及流度比的最优估计,在通过求取的参数与含水率的分流量方程建立含水率与无因次采液指数的关系曲线,从而进行提液量的预测及后续措施的指导。该方法应用于某稠油高渗油田油井的提液预测,其实测数据与理论模型吻合,且所得结果与实际提液量一致,不仅能够表达储层物性的变化,还能为油井后续措施进行有效的指引,为油井动态分析及预测提供依据。
In the long-term water flooding development of water fields,the rock pore structure and the relative movement relationship between oil and water in the reservoir will change,which will have a certain impact on the prediction of the effect of oil well liquid increase.To solve this problem,this paper deduced the exponential expression of relative permeability,used the production data of the straight-line section of the water drive curve of a single well to obtain the optimal estimation of oil-water phase index and mobility ratio,and established the relationship curve between water content and dimensionless production index through the obtained parameters and the partial flow equation of water content,so as to predict the amount of liquid production increase and guide the follow-up measures.This method was applied to the prediction in an oil well of heavy oil and high permeability oilfield.The measured data were consistent with the theoretical model,and the results were consistent with the actual fluid extraction volume.It can not only expressed the changes of reservoir physical properties,but also provided effective guidance for the follow-up measures of oil wells,and provided a strong basis for oil well performanceanalysisand prediction.
作者
张震
王中华
刘跃忠
王凤刚
高智梁
ZHANG Zhen;WANG Zhong-hua;LIU Yue-zhong;WANG Feng-gang;GAO Zhi-liang(Drilling and Production Company,CNOOC Energy Technology&Services Limited,Tianjin 300452,China;CNOOC China Limited,Tianjin Branch,Tianjin 300459,China)
出处
《精细与专用化学品》
CAS
2022年第11期25-27,共3页
Fine and Specialty Chemicals
关键词
相对渗透率
最优估计
无因次采液指数
relative permeability
optimal estimation
dimensionless liquid production index
