Quantitative identification of dominant controlling factors and productivity prediction for deep–ultra-deep tight sandstone reservoirs

Deep to ultra-deep tight sandstone reservoirs are characterized by low porosity, low permeability, and strong heterogeneity, and their productivity is jointly controlled by geological, engineering, and development factors. However, the high-dimensional nonlinearity of these variables and their complex interactions make it difficult for conventional methods to accurately identify dominant controls and achieve reliable productivity prediction. To address this issue, this study developed an integra