复合驱油体系物理化学渗流机理研究  

A study on physico-chemical percolation mechanism of combination flooding system

作　　者：唐钢[1] 李华斌[1] 贾伟浏 苏敏[3] 

机构地区：[1]油气藏地质与开发工程国家重点实验室西南石油学院,四川成都610500 [2]西北分公司雅克拉采油厂 [3]胜利油田动力机械集团公司

出　　处：《河南石油》2005年第5期41-43,共3页Henan Petroleum

摘　　要：复合驱油体系内含有各种化学剂,这些化学剂与油层岩石间的相互作用及化学剂在各相中的分配与化学反应,都会影响到复合驱物理化学渗流的机理和规律。在前人研究的基础上系统的阐述了复合驱油过程中的物理化学作用和驱油机理;此外,将复合驱过程中的物理化学影响因素归纳为几个等效因素,可以将复合驱物理化学渗流方程归纳为带吸附作用的对流扩散方程。结果表明:复合体系在亲水和亲油多孔介质中的驱油渗流机理有很大的不同。亲水条件下,复合体系驱油的主要特征是原油被驱油体系夹带运移通过喉道;亲油条件下,复合体系驱油的主要特征是体系进入孔隙与原油形成油包水型乳状液,并可变形通过喉道。给出的渗流方程可用来预测化学剂的传输规律。Combination flooding system contains various chemical agents. Both interactions between these chemical a-gents and reservoir rocks and the distribution and chemical reaction of the chemical agents in different phases can influence the mechanism and pattern of physico - chemical percolation during combination flooding. Based on previous studies, this paper discusses the physico - chemical action and oil displacement mechanism of combination flooding. The physico - chemical influential factors in combination flooding process can be summed up as several equivalent factors and the physico - chemical percolation equations of combination flooding can be summed up as a convection diffusive equation with absorptive action considered. Oil displacement percolation mechanisms of combination flooding system in water wetting and oil wetting porous mediums are quite different Under water wetting conditions, crude oil is entrapped in combination flooding system and is carried through pore throats. While under oil wetting conditions, combination flooding system enters into pores, forms W/O emulsion with crude oil, and passes through pore throats in deformed shape. The percolation equations presented can be used to predict transmission patterns of chemical agents.

关 键 词：复合驱 物理化学作用 驱油机理 渗流方程 

分 类 号：TE312[石油与天然气工程—油气田开发工程]