Classification and Assessment of Core Fractures in a Post-Fracturing Conglomerate Reservoir Using the AHP–FCE Method

To characterize the hydraulic fracture network of a conglomerate reservoir, slant core well was drilled aimed to obtain direct information regarding fractures through at fracturing test site (CHFTS). Core classification fundamental issue project. In this study, three grade classifications for were proposed. Comprehensive carried out using analytic hierarchy process (AHP)–fuzzy comprehensive evaluation (FCE) method. Finally, results validated against numerical simulation. The grade-1 included fractures, drilling-induced and cutting-induced fractures. A total 214 observed. For grade-2 classification, divided into 47 tensile 167 shear grade-3 subdivided 45 tensile-shear 122 compression-shear Based on verification classifications, dataset acquired applied analyze spatial distribution Results showed that mainly in near-wellbore area with lateral distances less than 20–25 m from wellbore. far-wellbore 20–30 These provide basis understanding types, density, failure mechanisms post-fracturing reservoir.