The result is that the pressure drop is increased rather dramatically over single-phaseflow and that the liquid tends to stack up in the pipe.
其结果是两相流管道的压降比单相流动有极大的增加，而且液体在管道内堆积。
2
The present well test analysis methods are only suitable to single-phaseflow in reservoir. In fact, multi-phase flow will occur after a certain long time reservoir fluid production.
目前，试井分析方法仅限于地层中的单相流动，而在油气田开发中后期，试井往往涉及地层中的多相渗流。
3
Based on consideration of stress sensitivity of coal seam permeability, the single-phaseflow rule of coal-bed gas in coal and cleats is studied by using non-equilibrium adsorption model.