西安石油大学：《油藏物理（油层物理学）Petro-physics》精品课程教学资源（英文课件）Flow 3.1 wettability and the distribution of oil and water in the porous media 油藏岩石的润湿性及油水分布

wettability and the distribution of oil and water in the porous media Xuanqi zhang Petroleum engineering college

wettability and the distribution of oil and water in the porous media Xuanqi zhang Petroleum engineering college

油藏物理学一油藏岩石的润湿性及油水分布 selective wet on the rock 1.Wet Definition:the phenomena that liquid will disperse along the solid surface because the effect of the surface molecules force

油藏物理学——油藏岩石的润湿性及油水分布 selective wet on the rock 1.Wet Definition: the phenomena that liquid will disperse along the solid surface because the effect of the surface molecules force

The wet between liquid and solid depends on molecule gravitation between liquid molecules or liquid and solid.If the molecule gravitation between liquid and solid is more than the molecule gravitation between liquids,liquid molecule will adsorb on the surface of solid

The wet between liquid and solid depends on molecule gravitation between liquid molecules or liquid and solid. If the molecule gravitation between liquid and solid is more than the molecule gravitation between liquids, liquid molecule will adsorb on the surface of solid

油藏物理学一油藏岩石的润湿性及油水分布 2.wettability Wettability is the term used to describe the relative adhesion of two fluids to a solid surface. one of fluid disperse along the surface of solid or adsorb on the surface of solid if there are two immiscible fluids on surface of solid

油藏物理学——油藏岩石的润湿性及油水分布 2. wettability Wettability is the term used to describe the relative adhesion of two fluids to a solid surface. one of fluid disperse along the surface of solid or adsorb on the surface of solid if there are two immiscible fluids on surface of solid

In a porous medium containing two or more immiscible fluids,wettability is a measure of the preferential tendency of one of the fluids to wet (spread or adhere to)the surface.In a water-wet brine-oil-rock system,water will occupy the smaller pores and wet the major portion of the surfaces in the larger pores

In a porous medium containing two or more immiscible fluids, wettability is a measure of the preferential tendency of one of the fluids to wet (spread or adhere to) the surface. In a water-wet brine-oil-rock system, water will occupy the smaller pores and wet the major portion of the surfaces in the larger pores

In areas of high oil saturation,the oil rests on a film of water spread over the surface.If the rock surface is preferentially water-wet and the rock is saturated with oil,water will imbibe into the smaller pores,displacing oil from the core when the system is in contact with water

In areas of high oil saturation, the oil rests on a film of water spread over the surface. If the rock surface is preferentially water-wet and the rock is saturated with oil, water will imbibe into the smaller pores, displacing oil from the core when the system is in contact with water

If the rock surface is preferentially oil-wet,even though it may be saturated with water,the core will imbibe oil into the smaller pores,displacing water from the core when it is contacted with water.Thus,a core saturated with oil is water-wet if it will imbibe water and,conversely,a core saturated with water is oil-wet if it will imbibe oil

If the rock surface is preferentially oil-wet, even though it may be saturated with water, the core will imbibe oil into the smaller pores, displacing water from the core when it is contacted with water. Thus, a core saturated with oil is water-wet if it will imbibe water and, conversely, a core saturated with water is oil-wet if it will imbibe oil

Actually,the wettability of a system can range from strongly water-wet to strongly oil-wet depending on the brined interactions with the rock surface.If no preference is shown by the rock to either fluid,the system is said to exhibit neutral wettability or intermediate wettability,a condition that one might visualize as being equally wet by both fluids (50%/50%wettability)

Actually, the wettability of a system can range from strongly water-wet to strongly oil-wet depending on the brined interactions with the rock surface. If no preference is shown by the rock to either fluid, the system is said to exhibit neutral wettability or intermediate wettability, a condition that one might visualize as being equally wet by both fluids (50%/50% wettability)

Contact angle 0 When the interface is in intimate contact with the walls of a container,for example a capillary tube, the interface intersects the solid surface at an angle,0,which is a function of the relative adhesive tension of the liquids to the solid

Contact angle θ When the interface is in intimate contact with the walls of a container, for example a capillary tube, the interface intersects the solid surface at an angle, θ, which is a function of the relative adhesive tension of the liquids to the solid

direction of contact angle 0: from more polarity liquid to less polarity liquid

direction of contact angle θ： from more polarity liquid to less polarity liquid