论文部分内容阅读
本文介绍一种新型显微孔隙模型制作技术、实验方法及实验结果。模型制作采用光刻技术直接将实际岩心的孔隙结构复制下来,因而比较真实。用这种模型分别进行了油驱水和水驱油实验,观察了残余水和残余油类型及形成机理。模形是亲水的。实验结果证实,油驱水之后形成的残余水饱和度受多种因素控制,储集岩孔隙结构的非均质性是形成残余水的主要因素,水驱油过程中卡断和绕流现象十分普遍,这是形成残余油的主要原因。实验还考虑了实际油层的排驱压力和油田注水压力锑度的关系。
This article describes a new micropore model production technology, experimental methods and experimental results. Photolithography using lithography directly to the actual core pore structure copied, and therefore more real. Oil-flooding and water-flooding experiments were conducted with this model respectively, and the residual water and residual oil types and their formation mechanism were observed. Mold is hydrophilic. The experimental results confirm that the residual water saturation formed after oil flooding is controlled by many factors. The heterogeneity of pore structure of reservoir rocks is the main factor of residual water formation. Common, this is the main reason for the formation of residual oil. The experiment also considered the relationship between the displacement pressure of actual reservoir and the pressure of antimony in oilfield.