Q6 E_(3)^(1)细砂岩储层水淹层评价

Evaluation of watered-out layer in Q6 E_(3)^(1)fine sandstone reservoir

Q6 E_(3)^(1)油藏自2014年以来油藏含水上升较快,整体受注水、边底水双重影响,原始地层低矿化度以及淡水的注入给剩余油评价带来困难。以岩石物理实验为基础,深入开展测井资料研究,建立残余油饱和度、束缚水饱和度、含油饱和度等模型有效识别水淹层;在相渗实验基础上,建立产水率模型,实现6级水淹定量评价。过套管电阻率剩余油评价与产液资料结合,指导现场生产并取得良好效果。

Since 2014,the water cut of Q6 E_(3)^(1)reservoir has been rising rapidly,which is affected by both water injection and edge and bottom water.On the basis of petrophysical experiments,the logging data are studied deeply,and the models of residual oil saturation,irreducible water saturation and oil saturation are established to effectively identify water-flooded zones,realization of quantitative evaluation of level 6 flood.The residual oil evaluation of through-casing resistivity is combined with the production data to guide the field production and obtain good results.