Law of Fracture Expansion of Deep Sandstone in Jingbian Area

To better seal and plug micro fractures in the surrounding rock of deep wells, the numerical simulation software ABAQUS is used to simulate the expansion of fractures by establishing a hydraulic fracturing numerical model for the sandstone about 1 500 m in Jingbian Area based on the hydraulic fracturing theory. The conclusion shows that, under the influence of in-situ stress, hydraulic pressure and elastic modulus, fracture propagation has obvious law, while natural fracture has little effect on fracture propagation.