2016/08/29 by С. В. Головин, Golovin, Sergey V., A.N. Baykin +1
Engineering · Environmental Science · #Dam Engineering and Safety #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Groundwater flow and contamination studies #Hydraulic Fracturing and Reservoir Analysis
paper · pdf · doi:10.48550/arxiv.1608.08001
openalex publication_date 2016/08/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this paper we demonstrate the influence of the pore pressure to the\ndevelopment of a hydraulically-driven fracture in a poroelastic medium. We\npresent a novel numerical model for propagation of a planar hydraulic fracture\nand prove its correctness by demonstration of the numerical convergence and by\ncomparison with known solutions. The advantage of the algorithm is that it does\nnot require the distinguishing of the fracture's tips and reconstruction of the\nnumerical mesh according to the fracture propagation. Next, we perform a\nthorough analysis of the interplay of fluid filtration and redistribution of\nstresses near the fracture. We demonstrate that the fracture length decreases\nwith the increase of the Biot's number (the parameter that determines the\ncontribution of the pore pressure to the stress) and explain this effect by\nanalysing the near-fracture pore pressure, rock deformation and stresses. We\nconclude, that the correct account for the fluid exchange between the fracture\nand the rock should be based not only on physical parameters of the rock and\nfluid, but also on the analysis of stresses near the fracture.\n