泡沫油模型研究现状

A review of foamy oil model

 熊钰 王冲

 （西南石油大学石油与天然气工程学院，四川 成都 610500）

 (School of Oil and Natural Gas Engineering, Southwest Petroleum University, Chengdu 610500, China)

 引入泡沫油的概念是为了描述原油流动过程中伴随有分散气泡的现象。泡沫油现象被认为是加拿大和委内瑞拉稠油油田出现反常高产和超出预期较高采收率的主要机理。在充分调研泡沫油模型文献的基础上，对各种概念模型的特点进行了比较和总结。加拿大的一些稠油油藏在产出泡沫油的同时伴随有出砂现象，这表明地质力学作用和流体特殊性质2种因素并没有相互排斥，甚至存在两者的耦合作用。泡沫油的形成机理目前依然存在争论，如对于泡沫油的黏度目前尚未形成统一的认识，泡沫油形成过程的影响因素之间是否存在耦合等，要解决这些问题，未来应在泡沫油溶解气驱微观可视化模型和非常规PVT测试的基础上进一步探究其形成机理。
关键词 泡沫油；流￣固耦合；非平衡相态

 In order to describe the special phenomenon that gas bubbles remain dispersed in the oil, the concept foamy oil is introduced. It is the foamy oil that seems the possible cause for the anomalous higher production and unexpected recovery of some heavy oil reservoirs in Canada and Venezuela. Several conceptual models for the anomalous production behavior have been suggested and examined. Based on detailed investigation of foamy oil models, the features of foamy oil models are summarized in this study. There is foamy oil phenomenon with sand production in the production of some canadian heavy-oil reservoirs, which indicates that there are coupling effects between geodynamics effects and special fluid properties of foamy oil. The mechanism of foamy oil is still controversial and there are many efforts which should be made to solve this problem based on microscopic visualization model and unconventional PVT tests. It can be expected that further investigation of foamy oil model will be of great significance to the in-site production, the optimization of production process and the numerical reservoir simulation.

10.6056/dkyqt201604015