摘要
非稳态实验法获取的相对渗透率数据点主要集中在高含水饱和度处,水驱前缘数据点较少,直接应用到中轻质油田生产动态分析及数模拟合中易导致早期开发规律难以准确认识,不能完整反应整个开发历程。利用广适水驱曲线进行中低含水期含水饱和度计算,并将传统相对渗透率计算模型进行改进,创新性提出基于油水相指数时变的相对渗透率计算方法,实现低含水期相对渗透率数据加密。结果证明,该方法与稳态实验法测得数据吻合度较高,能够反应低含水期渗流规律,对于中轻质油田相对渗透率的获取具有借鉴意义。
Since the experimental points of non-steady state method are often concentrated after oil and water both coming out, resulting in insufficient data of the oil-water front. The application of non-steady state method to medium-light oilfield may cause deviation, resulting in difficulties to accurately understand the law of water rising. In this paper, the traditional relative permeability model is improved, and the relative permeability calculation is carried out by using the oilfield production data to realize the encryption of the relative permeability in the low water cut period. The results show that the method is consistent with the experimentally measured data and can reflect the seepage law in low water cut period and is of strong guiding significance for obtaining relative permeability in medium-light oilfield.
作者
翟上奇
雷源
孙广义
张言辉
常会江
Zhai Shangqi;Lei Yuan;Sun Guangyi;Zhang Yanhui;Chang Huijiang(Bohai Oil Research Institute, CNOOC China Limited Tianjin Branch, Tianjin, 300459, China)
出处
《天然气与石油》
2019年第4期73-77,94,共6页
Natural Gas and Oil
基金
中海石油(中国)有限公司综合科研项目“渤海双高油田挖潜关键技术研究”(YXKY-2018-TJ-04)
关键词
中轻质油田
低含水期
相对渗透率
非稳态法
油相指数
水相指数
Medium-light oilfield
Low water cut period
Relative permeability
Non-steady state method
Oil phase index
Water phase index
