Tight gas well productivity prediction method and system

The invention relates to a tight gas well productivity prediction method and system, and the method is characterized in that the method comprises the steps: determining the water production risk type of a to-be-predicted gas reservoir according to the well logging interpretation of the to-be-predicted gas reservoir and a pre-established tight gas reservoir water production risk recognition chart; according to the determined water production risk type and a pre-established productivity prediction chart, the productivity of the gas reservoir to be predicted is determined, the productivity can be rapidly predicted on the basis of gas reservoir water production risk identification, and the method can be widely applied to the field of tight gas reservoir exploration and development. 本发明涉及一种致密气井产能预测方法及系统，其特征在于，包括：根据待预测气层的测井解释和预先建立的致密气藏产水风险识别图版，确定待预测气层的产水风险类型；根据确定的产水风险类型和预先建立的产能预测图版，确定待预测气层的产能，本发明可以在气层产水风险识别的基础上，进行产能的快速预测，可以广泛应用于致密气藏勘探开发领域中。