Abstract: n regard to present well test interpretation for gas condensate well, single phase pseudo-pressure method for dry gaswell is still be used in general, of which the effect of porous media on adsorption of condensate oil and gas is not considered.But more and more experiments and theoretical studies indicate that porous media adsorption is of greater influences on thepercolation of condensate oil and gas.This paper proposes the method for buildup test analysis of condensate gas wellconsidering adsorption effect based on differential equation of percolation with adsorption effect of condensate gas well and draw-down test analysis.Case study shows that the effect of porous media adsorption could result in decreasing effective permeability,increasing skin factor,reducing detection radius of gas well in well test interpretation. For a condensate gas reservoir with highheavy hydrocarbon content and low porosity, the influence of porous media adsorption would be much more apparent. Hence, theinfluence of porous media interfacial phenomena on the percolation and well test in a condensate gas well can not be neglected.

Key words: condensate gas well, well test, porous media, adsorption