Digital Rock Analysis on the Influence of Coarse Micro-Fractures on Petrophysical Properties in Tight Sandstone Reservoirs

Tight sandstone reservoirs, as typical unconventional have attracted more and attention worldwide. Compared to conventional the complex microscopic pore structures micro-fractures of tight reservoirs are developed, fluid flow in reservoir is very complicated. Therefore, studying influence fractures on rock topological structure characteristics between matrix critical development reservoirs. In light intricate nature micro-fractures, digital analysis technology utilized address this issue instead traditional experimental methods. Firstly, selected scanned by X-ray computed tomography (XCT), then natural reconstructed filtering binary segmentation. Secondly, micro-fracture with different shapes added rock. Then, a network model extracted maximum ball method adopted conduct simulation. The study finds that distribution throat radius changes increasing fracture aperture length permeability capillary pressure curves influenced direction connectivity. impact dip angle significant directions. Overall, emphasizes importance determining properties behavior highlights usefulness providing insights into microstructures.