Abstract: The interpretation technique and software about flowing well testing data with downhole flow pressure rising are completely blanks at home and abroad. For this reason, the mathematical and numerical models with variable skin factor,deformed dual porosity and high velocity non-Darcy flow are established, and the software for interpretation and evaluation of them is developed, which can be used to in-terpret flowing well testing data with downhole flow pressure rising that is impossibly interpreted by other well test analysis software. The skin factor and real absolute open flow vs. time in a gas well can also be obtained. Practical application shows that the method or software presented in this paper is not only of feasibility, but the interpreted results are close to real conditions.

Key words: flowing well, flowing pressure, well test interpretation, skin factor, productivity evaluation