摘要
基于油水两相稳定渗流理论,建立了油水两相流条件下考虑油藏渗流和井筒流动耦合的水平井产能计算模型,并考虑储层的各向异性,对产能计算模型进行了修正。分析表明,油藏各向异性程度越强,水平井产能越低,通过调整水平段与主渗透率方向的夹角能够提高水平井产能,当水平段垂直于主渗透率方向部署时,水平井的产能最高;实例计算表明所建立的模型对不同开发阶段油水两相流条件下水平井产能计算的精度较高,为高含水期水平井产能预测和优化设计提供了依据。
Based on oil-water two phase stable flow theory,a reservoir coupling model was established for calculating the productivity of horizontal wells,which took reservoir flow and wellbore flow into consideration,the anisotropy of the reservoir was also considered and the productivity calculation model was modified.The analysis shows that the more anisotropic of the reservoir is,the lower productivity of the horizontal well is.Adjusting the angle between horizontal well and principle permeability direction can improve the productivity.When horizontal well is perpendicular to the principle permeability direction,the productivity is the highest.The coupling model is applied into field example,and the calculation accuracy is higher at different development stages under the condition of oil-water two phase flow.This research provides a foundation for the prediction and optimization of horizontal well production capacity at high water-cut stage.
出处
《石油天然气学报》
CAS
CSCD
2012年第12期119-122,156,共5页
Journal of Oil and Gas Technology
基金
国家科技重大专项(2011ZX05011-003)
关键词
水平井
油水两相流
各向异性
耦合模型
产能预测
horizontal well
oil-water two phase flow
anisotropy
coupling model
productivity prediction
