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

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.