Abstract: Carbonate reservoirs in the Qianjiang Depression exhibit significant resource potential, but face challenges in characterization and stimulation because of their complex lithology, high heterogeneity, and variable pore structures. Hydraulic fracturing, which is critical for enhancing productivity in reservoirs with medium-low porosity and permeability, requires accurate fracturability predictions. Traditional single-factor methods inadequately link mineral composition, mechanics, and fracture propagation, hindering development optimization. This study employed an integrated geology–engineering approach that utilized petromineralogical, petrophysical, and rock mechanics experiments to analyze mineral composition, pore structure, and mechanical properties. By combining mineralogical and mechanical brittleness indices, we establish a region-specific fracturability evaluation model to guide targeted fracturing, design optimization, and efficient development.