Complex gas reservoir drainage gas recovery process system optimization method

The invention discloses a complex gas reservoir drainage gas recovery process system optimization method, which comprises the following technical measures: step 1, on the basis of gas well data of a drainage gas recovery process developed in a region, obtaining characteristic factors influencing the gas well drainage gas recovery process by adopting a gray correlation analysis method; 2, sorting the obtained characteristic factors according to the correlation degree; 3, establishing a neural network model based on drainage gas production process effectiveness identification; 4, taking the contribution rate of the characteristic factors as a target, carrying out the successive analysis of the characteristic factors, and optimizing a neural network model; 5, removing feature factors causingincrease of the recognition error rate of the training sample; and establishing a prediction model of the regional gas reservoir drainage gas recovery process. The prediction effectiveness of the application of the drainage g