The temperature increases along pipe, and the differential temperature increases with foamflow velocity decreasing.
管内温度沿管程不断升高，且流速越小温升越大；
2
The flow resistance of foam is affected by those parameters such as surfactant concentration, oil saturation, temperature, permeability, water and gas phase velocity, etc.
泡沫的流动阻力受泡沫剂浓度、温度、油饱和度、渗透率以及水相和气相达西流速的影响。
3
By horizontal tangent into the air filter layer, rotate and foreign get down to the oil, oil level of shock wave and flow surfaces by a foam, the air in the oil to get oil bath.