采油中的润湿热、粘附功和吸附焓变

为了深入了解润湿热、粘附功和吸附焓变在采油中的地位、应用和相互关系,从概念、相互关系和测量方法等方面探讨了3个量的意义,分析了它们在采油中的作用和应用。分析表明,粘附与润湿均与吸附有关,二者关系密切,在采油中起着举足轻重的作用。油在岩石表面的粘附功、润湿热越大,越不容易被驱走;驱油剂在岩石表面的润湿热越大,越有利于自发渗吸,提高洗油效率;驱油剂在岩石表面的吸附焓变越大,吸附能力越强,越有利于改变岩石表面的性质。

Wetting heat, adhesion work and adsorption enthalpy increment in oil recovery

In order to deeply understand the role,application and relationship of wetting heat,adhesion work and adsorption enthalpy increment in oil recovery,the importance was discussed by the concept,relationship and measuring method.The function and application of the three variables during oil recovery were analyzed.Adhesion and wetting are related to adsorption,so their relationship is close,which plays important roles in oil recovery.The greater the adhesion works or the wetting heat of oil on rock surface is,the more difficult displaced the oil is.While the wetting heat of oil displacement agent on rock is greater,it's more favor for imbibition,more favor for enhancing oil recovery.If the adsorption enthalpy increment of oil displacement agent on rock is greater,the adsorption capacity is higher,more favor for changing the surface property of rock.