摘要
利用电缆地层测试器(FMT)资料估算油藏无水采油期剩余油饱和度,是其在油田开发阶段的重要应用之一。在引入油层动用程度和油层采出程度的概念之后,笔者提出一种确定无水采油期当前油层剩余油饱和度的新方法,即利用油层压力资料来估算剩余油饱和度。当油层处于无水采油期时,油层不含水,此时油层电阻率与原始油层电阻率变化不大,由常规电阻率计算的剩余油饱和度与原始含油饱和度差别不大,易得出油层"没有被动用"的假象。因此,应当利用FMT资料来估算剩余油饱和度。对于开发生产井,常规电阻率测井资料和FMT资料综合估计剩余油饱和度的方法是互为补充,缺一不可的。
Properties of formation fluid and formation pressure can be evaluated by Wireline Formation Multi-Tester（FMT） data including formation pressure and formation fluid data.Consequently,FMT data plays an important role at the stage of oil-field exploration.However,FMT can have more important applications at the stage of entire oil-field development.One of these is to estimate the remaining oil saturation during the water-free oil production period.Various methods have been introduced to determine the remaining oil saturation in the water-free period.Based on the Darcy Law,we introduced a concept of the reservoir producing degree and recovery degree,and put forward a new approach that applied reservoir pressure data acquired by FMT to estimate the remaining oil saturation.During the water-free producing period,the oil reservoir resistivity is almost the same as the original reservoir resistivity,and the difference in remaining oil saturations calculated by the two resistivities mentioned above is also very small.In this case,a wrong conclusion of the low producing degree may readily be deduced.Therefore,FMT data should be used to estimate the remaining oil saturation,which can avoid wrong interpretations.As to a producing well in the development period,resistivity logging data and FMT data should be integrated to calculate the remaining oil saturation,and they can complement mutually in application.
出处
《石油学报》
EI
CAS
CSCD
北大核心
2011年第4期672-677,共6页
Acta Petrolei Sinica
关键词
无水采油期
地层压力测量
油气动用程度
油层采出程度
油层剩余油饱和度
压力系数
water-free oil production period
formation pressure measurement
oil-gas producing degree
reservoir recovery degree
remaining oil saturation
pressure coefficient
