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某区某油层进行了聚合物驱开采,但薄差油层仍有一部分潜力。为搞清薄差油层剩余潜力,对某区薄差油层的发育状况和动用情况进行了分析。总结了不同类型薄差油层的发育特征及动用特点,并对某区薄差层的剩余潜力及挖潜方法进行了研究。搞清了剩余油类型、特点及成因,并提出了通过采取三次采油井后期补孔、油改水、钻补充井等方法挖掘薄差油层潜力。
A certain area of a reservoir for polymer flooding, but the thin reservoir is still some potential. In order to find out the residual potential of thin difference reservoir, the development status and utilization of thin difference reservoir in a certain area were analyzed. Summarizes the development characteristics and the utilization characteristics of different types of thin oil layers, and studies the residual potential and potential tapping methods of thin difference layers in a certain area. The types, characteristics and causes of remaining oil were clarified. The potential of digging thin difference reservoirs by means of taking up the post-production hole of the third oil recovery well, revising the oil by oil, drilling and replenishing the well, etc. were proposed.