RESEARCH ON WETTING HEAT AND ADSORPTION HEAT BETWEEN THE SURFACE OF SOLID AND LIQUID

In order to understand the meaning of wetting heat and adsorption heat,concepts and relationships were discussed.The function and application of which during oil recovery were analyzed and some imbibition experiments were made.The theoretical analysis and the experimental results show that the relationship between wetting and adsorption are close and they play important roles in oil recovery.The greater the wetting heat of oil on rock surface is,the more difficult displacing the oil is.The more greater the wetting heat of oil displacement agent solution on rock,the more easy to imbibition,and more favor for enhancing oil recovery.If the adsorption heat of oil displacement agent on rock is greater,the adsorption capacity is higher,more favor for changing the surface property of rock.