Layered gas testing unobstructed flow prediction method

The invention discloses a layered gas testing unobstructed flow prediction method. The method comprises the following steps of 1) selecting reservoir physical property influence factors which influence the gas testing unobstructed flow of a gas well; 2) according to the reservoir physical property influence factors and layered gas testing results of an exploratory well and an evaluation well, establishing a single-layer gas testing unobstructed flow prediction model; 3) verifying the established single-layer gas testing unobstructed flow prediction model through a gas production profile test of the gas well, and correcting the related reservoir physical property influence factors; 4) according to the step 2) and the step 3), establishing single-layer gas testing unobstructed flow prediction models of different blocks or different layers; and 5) according to the single-layer gas testing unobstructed flow prediction models of the different blocks or the different layers obtained in the step 4), predicting the s