In the experiment, with the increase of water cut, the frictional pressure drops decrease sharply when water disperses in oil but hardly change when oil disperses in water.

• 本实验范围内，当管内液相处于油包水时，摩擦压降随含水率的增大急剧减小，当液相处于水包油时，随着含水率的增大，流动摩擦压降随含水率的增大变化平缓。