Investigation of the Vertical Propagation Pattern of the 3D Hydraulic Fracture under the Influence of Interlayer Heterogeneity

The low permeability and thinly interbedded reservoirs have poor physical properties strong heterogeneity, it is difficult to control the hydraulic fracture (HF) height width during fracturing, which affects effect of HF penetration sand addition. In this work, a three-dimensional fluid–solid fully coupled propagation model established simulate influence interlayer heterogeneity on vertical width, relationship between length under different treatment parameters further studied. results show that, in thin strata, high stress contrast, tensile strength, Young’s modulus will inhibit HFs. wavy distribution width. Under modulus, profile becomes narrow variation amplitude decreases. decreases increases as injection rate fracturing fluid viscosity increase. This study great significance for clarifying pattern reservoirs, optimizing parameters, improving cross proppant distribution.