摘要
乳化液在孔隙介质中的流动过程是一个复杂的随机游走过程,不同直径的液滴在大小不同的孔隙中滞留和聚并,又通过大小不同的喉道破裂和分散。采用微观物理化学流体力学方法,根据描述乳化液液滴直径的数学公式,分析了液滴直径与毛管数及渗透率的数学关系及乳化现象发生的条件。将不同尺寸液滴在多孔介质中的分布与毛管数联系起来,并结合孔隙喉道分布,计算出乳化液液滴尺寸分布概率曲线。对乳化液滴的破裂与分散进行了初步分析。研究表明,降低界面张力、提高毛管数可改善稠油油藏开发效果。
The emulsion flow in the porous media is a complicated and stochastic process. Droplets with different diameters reside and gather in the pores with different sizes, and break and separate in pore throats with different sizes. According to the mathematic description of the emulsion droplet diameter, the mathematic relationship between droplet diameter and capillary number and permeability is analyzed by micro-physicochemical hydrodynamic method. The probability distribution curve of droplets with different diameters is obtained combing the droplet distribution with capillary number, together with the pore throat distribution. The conditions for the break and separation of the droplets are also studied, indicating that reducing interfacial tension and improving capillary number can improve exploitation effect of the heavy oil reservoir.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2005年第2期113-115,共3页
Petroleum Exploration and Development
关键词
稠油
热化学采油
微观机理
数学描述
heavy oil
thermo-chemical recovery
micro-mechanism
mathematic description
