| 本文已被：浏览次 下载次 |
码上扫一扫！ |
|
|
|
| Effects of buoyance on oil droplets migration in waterflood process |
|
MU Wen-zhi,S0NG Kao-ping, YANG Er-long
|
|
(Key Laboatory of Enhancing Oil and Gas Recovery of Education Ministry in Daqing Petroleum Institute，Daqing 163318, Heilongjiang Province，China)
|
| Abstract: |
| 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. |
| Key words: residual oil gravity buoyance porous media pressure gradient |
|