【摘要】 用富含沥青质的单家寺原油制备了天然油湿岩心,与通常用硅油处理的岩心相比较,该岩心的油湿特性更接近油藏岩石.在相同实验条件下获得的油湿程度较高,油湿持久性好,处理后的岩心渗透率基本不受影响.评价了各种因素对处理效果的影响.其中老化温度的影响较为明显,随温度升高,岩样的油湿性增强.更多还原

【Abstract】 A method for the preparation of natural crude wet cores by the use of asphaltene crude oils has been developed. Compared with the oil wet cores treated with silicone oil, the cores prepared by this method exhibit behavior not only closer to that of reservior rocks, but also of higher oil wettability under the same test conditions. Furthermore, the oil wetting power of these cores lasts longer, and the permeability of treated cores has little change. The influence of various factors on the treatment effect is evaluated. It is found that temperature has a remarkable influence. The oil wettability of core samples becomes stronger with the increase of temperature.更多还原