摘要
受储层非均质性和实验误差的影响,岩心实验得到的相对渗透率曲线很难代表整个油藏的相渗特征。根据油藏适用范围较广的张金庆水驱特征曲线法,提出了计算相对渗透率的新方法:利用油藏生产数据计算得出油水两相相对渗透率的比值与含水饱和度的关系,修正实验得到的相对渗透率曲线。通过具体的油藏实例,利用修正的相对渗透率曲线计算的含水率,与油田实际生产中的含水率上升规律符合性好,表明该方法能提高岩心实验相对渗透率曲线的可靠性。
Relative permeability is of great importance in reservoir engineering research,and it is mainly obtained by means of core measure-ment.Due to the errors in core test and the heterogeneity of pay zone,the result from core analysis is usually considered as unre-alistic representation of reservoir.A new method of calculating relative permeability is introduced herein.Based on the Zhang Jingqing water drive curve,we propose the new approach of calculating the oil and water relative permeahility,which can also be used to modify the relative permeability from core test.As it is tested by the actual oil reservoir test in Nanyang oil field,the cal-culated water cut from modified relative permeability has better correlation with actual water cut than that from core test.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2010年第2期105-107,118,共3页
Petroleum Geology and Recovery Efficiency
关键词
相对渗透率曲线
含水饱和度
采出程度
含水率
张金庆水驱特征曲线法
relative permeability curve
water saturation
recovery percent of reserves
water cut
Zhang Jingqing water drive curve
