Method for evaluating gas production contribution rate of each section of shale gas well afterfracturing

The invention relates to the technical field of shale gas well gas production evaluation, and discloses a method for evaluating the gas production contribution rate of each section of a shale gas wellafter fracturing, which comprises the following steps of: 1, optimizing evaluation parameters; 2, carrying out classification and arrangement on the optimized geological parameters; 3, calculating and evaluating geological parameter weights; 4, collecting the six types of geological parameters of each fracturing section of the to-be-evaluated well; 5, evaluating the fracturing effect of each fracturing section; 6, calculating the total score of each fracturing section; and 7, calculating the gas production contribution rate of each section according to the total score of each fracturing section. The method can solve the problems that only the single-well productivity can be evaluated, the gas production contribution condition of each fracturing section cannot be evaluated, and the cost oftesting the yield of each