By mixing the balanced oil-gas fluids of different ratios, the volumetric changes of the mixed oil and gas are detected to study the changes of retrograde condensate saturation when the balanced oil and gas percolation occur in the near-well-.

The influence of retrograde condensate on productivity of condensate gas well;

Dry gas injection huff and puff is one of the effective techniques to remove the retrograde condensate blocking of condensate gas wells.

If water vapour occurs in the gas-condensate system,the pressure-temperature figure area increases,the retrograde condensate area increases and init.

Using numerical simulation method, the retrograde condensation saturation variety and the development effect of the single well dry gas injection is studied.

Removal of the near-wellbore plug and gas lock resulted from retrograde condensation is a key problem to be tackled during the recovery of deep-buried, low-permeable condensate gas reservoirs.

With more and more discoveries of deep and low-permeability gas condensate reservoirs, understanding of the retrograde condensation behavior is an important basis of making a wise development plan.

Formulae on disposal of sediment sample with displacement method after adding deflocculant;