Oxidative Dissolution Effects on Shale Pore Structure, Mechanical Properties, and Gel-Breaking Performance.

ABSTRACT: Shale reservoirs contain abundant organic matter, pyrite, and clay minerals, making them highly susceptible to fluid-sensitivity damage; consequently, conventional hydraulic fracturing often yields poor stimulation performance, with low fracturing fluid flowback and rapid post-treatment production decline. Oxidative dissolution, however, can significantly alter the physical properties of shale reservoirs and improve stimulation effectiveness. In this study, nuclear magnetic resonance (NMR), contact-angle measurements, and triaxial compression tests are combined to systematically evaluate the effects of oxidative dissolution on the pore structure, wettability, and mechanical properties of Wufeng Formation shale from the Sichuan Basin. Core-flooding experiments with NaClO solutions show that

SUBMITTER: Chen J 

PROVIDER: S-EPMC12732822 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature