A new nano imbibition agent was prepared by emulsification method.The particle size,sur-face interfacial tension,temperature resistance,adsorption resistance and wetting contact angle of the new nano imbibition agent were evaluated.The results showed that the average particle size of the new nano imbibition agent was less than 40 nm,the concentration was greater than 0.3％,the surface tension was less than 27 mN/m,and the interfacial tension was less than 0.1 mN/m,and it had ex-tremely strong anti-adsorption properties.The interfacial tension of the nano imbibition agent does not change significantly within the temperature range of 20-150℃.The static self-imbibition results show that the recovery rate of self-imbibition increases with the increase of salinity in a certain range.The dynamic displacement experiments show that the recovery rate of nano-imbibition agent can in-crease by 9.7％after a primary water drive,the field application effect is good.
维普
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