Pore and Microfracture Characterization in Tight Gas Sandstone Reservoirs with a New Rock-Physics-Based Seismic Attribute

Pores and microfractures provide storage spaces migration pathways for gas accumulation in tight sandstones with low porosity permeability, acting as one of the controlling factors production. The development a rational rock physics model is essential better understanding elastic responses sandstone complex pore structures. Accordingly, seismic characterization pores based on provides valuable information predicting high-quality reservoirs. This paper proposes rock-physics-based approach to compute pore–microfracture indicator (PMI) from properties structure evaluation sandstones. PMI achieved axis rotation parameter space using well-log data. angle determined by finding maximum correlation between linearized combination parameters introduced factor associated total microfracture porosity. then estimated an inversion scheme double-porosity model. Finally, optimized employed obtained results are great benefit permeable zones, providing sweet spot