水驱油过程中浮力对油滴运移的影响  

Effects of buoyance on oil droplets migration in waterflood process

作　　者：穆文志[1] 宋考平[1] 杨二龙[1] 

机构地区：[1]大庆石油学院提高油气采收率教育部重点实验室,黑龙江大庆163318

出　　处：《中国石油大学学报（自然科学版）》2008年第2期82-85,89,共5页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家自然科学基金重点项目(50634020)

摘　　要：通过研究多孔介质内油滴的受力情况,分析了油藏在整个开发过程中流体之间作用力的相互关系及其对剩余油分布的影响,考虑了浮力在油藏不同开发阶段对油滴的作用,并应用达西定律研究了流体浮力对垂向剩余油分布的影响规律。分析结果表明,流体对油滴产生的浮力对垂向剩余油分布的影响在油层内部表现明显,而在靠近注水井和生产井附近的区域表现得不十分明显。By studying the forces on the oil droplets in porous media, the interaction relationship among acting forces of the fluids during the process of oilfield development and the influences of acting forces on the residual oil distribution were analyzed. The action of buoyance on oil droplets during different stages of the oilfield development was considered, and the influences of buoyance on residual oil distribution were studied by Darcy law, The results show that the distribution of vertical residual oil is affected by the buoyance produced by fluids on oil droplets, The influences are relatively obvious in the inner oil layer, while it is not so obvious in the areas near the injection wells and production wells.

关 键 词：剩余油 重力 浮力 多孔介质 压力梯度 

分 类 号：TE39[石油与天然气工程—油气田开发工程]