Interface phenomena on two phase surface Xuanqi zhang Petroleum engineering college
Interface phenomena on two phase surface Xuanqi zhang Petroleum engineering college
油藏物理学一油藏岩石的渗流特征 free energy of the interface on two phase interface Definition:there are superfluous energy because molecule force field is imbalance on two phase interface.The energy is free energy of the interface on two phase interface
油藏物理学——油藏岩石的渗流特征 free energy of the interface on two phase interface Definition: there are superfluous energy because molecule force field is imbalance on two phase interface. The energy is free energy of the interface on two phase interface
The feature of free energy of the interface a.existent condition of free energy of the interface free energy of the interface can exist if fluids are immiscible
The feature of free energy of the interface a. existent condition of free energy of the interface free energy of the interface can exist if fluids are immiscible
油藏物理学一油藏岩石的渗流特征 b.existent region of free energy of the interface free energy of the interface not only exist single-molecule layer on the two-phase interface,but ul u2 also exist all interface layer hl h2 before molecular field attain balance
油藏物理学——油藏岩石的渗流特征 b. existent region of free energy of the interface free energy of the interface not only exist single-molecule layer on the two-phase interface, but also exist all interface layer before molecular field attain balance
油藏物理学一油藏岩石的渗流特征 c.amount of free energy of the interface based on second law of thermodynamics, it is possible that any free energy of the interface will attain minimum value. the more interfacial area,the more free energy of the interface. the more molecular polarity difference between two-phase interface,the more the
油藏物理学——油藏岩石的渗流特征 c. amount of free energy of the interface based on second law of thermodynamics, it is possible that any free energy of the interface will attain minimum value. ● the more interfacial area, the more free energy of the interface. ● the more molecular polarity difference between two-phase interface, the more the surface energy
O the more interfacial area,the more free energy of the interface. the more molecular polarity difference between two-phase interface,the more the surface energy
● the more interfacial area, the more free energy of the interface. ● the more molecular polarity difference between two-phase interface, the more the surface energy
example if there are three kinds of fluid,such as water,oil and gas,water molecular polarity is maximum,and gas molecular polarity is minimum.So the free energy of the interface of water- gas interface is maximum
example if there are three kinds of fluid, such as water, oil and gas, water molecular polarity is maximum, and gas molecular polarity is minimum. So the free energy of the interface of watergas interface is maximum
油藏物理学一油藏岩石的渗流特征 Interfacial tension definition:The interfacial tension has the dimensions of force per unit length and is free energy of the interface over interface area."o" 6=U/A unit:Newton/m
油藏物理学——油藏岩石的渗流特征 Interfacial tension definition: The interfacial tension has the dimensions of force per unit length and is free energy of the interface over interface area. “σ” σ＝Ｕ／Ａ unit：Newton/m
newtons/meter is the modern standard expression of the units.In the earlier literature,however,it is expressed as dynes/cm,which is numerically equal to millinewtons/m [(NX 10-3)/m or mN/ml. interfacial tension only exist on three-phase interface
newtons/meter is the modern standard expression of the units. In the earlier literature, however, it is expressed as dynes/cm, which is numerically equal to millinewtons/m [(N×10-3)/m or mN/ml. interfacial tension only exist on three-phase interface
油藏物理学一油藏岩石的渗流特征 a23 3 1 a13 012
油藏物理学——油藏岩石的渗流特征