Study on interfacial tension, composition, density, viscosity and saturation of gas pha - se and liquid phase front in the slim tube under various injection pressures and injection rate.

To separate the liquid and gas phase, the separator makes use of the difference in density between them, and takes advantage of ESP high speed rotating, which used to power a separating device.

Then the corresponding sonic velocity of the two-phase flow is determined by the void ratio, pressure and density of the liquid phase.