Pressure drop of variable mass flow in perforation completion of horizontal wellbore;

Study on momentum transfer characterisitics of variable mass flow in collection header of utility boiler;

Study on characteristics of horizontal well inflow performance considering variable mass flow in solution gas drive reservoirs

Investigation of variable mass flow in horizontal well with perforation completion coupling reservoir;

The effect of variable mass flow is cons.

For a single phase steady system,considering the pressure drop created by friction and the character of the variable mass flow in the wellbore,a variable mass model with pressure gradient is developed by coupling the percolation in reservoir with the flow in the wellbore.

During the application of Physics, there are a lot of problem about mass varied, and there are mainly varied mass in relative theory and mass fluxion in classic something about dynamic equation and its practical application.

According to the mutual relation between fluid flow in well bore of horizontal well and reservoir,a new method of the coincidence-computation for changing-quality-turbulence and stratum filtering flow in a horizontal well with pressure gradient was developed.