FDEM-flow3D: A 3D hydro-mechanical coupled model considering the pore seepage of rock matrix for simulating three-dimensional hydraulic fracturing. (January 2017)

• Record Type: Journal Article
• Authors: Yan, Chengzeng; Zheng, Hong
• Is Part Of: Computers and geotechnics. Volume 81(2017)
• Page Start: 212
• Page End: 228
• Publication Date: 2017-01
• Subjects: Finite discrete element method (FEMDEM) -- Hydraulic fracturing -- Hydro-mechanical coupling -- Pore seepage -- Calibration aperture -- Fluid-driven fractures; Engineering geology -- Data processing -- Periodicals; Soil mechanics -- Data processing -- Periodicals; Rock mechanics -- Data processing -- Periodicals; 624.1510285
• DOI: 10.1016/j.compgeo.2016.08.014
• Languages: English
• ISSNs: 0266-352X

Abstract

Abstract: A hydro-mechanical coupled model that can simultaneously consider the pore seepage of a rock matrix and the fracture seepage is proposed to simulate three-dimensional hydraulic fracturing. This model appropriately takes into account the fluid leak-off into the surrounding rock matrix from the fracture. Several examples are given to validate the seepage algorithms and the coupled model. The results suggest that this model can solve problems involving pore seepage and fracture seepage through simple pure fracture seepage. Moreover, it can reproduce the fluid pressure distribution and the crack initiation and propagation and consider the fluid loss during hydraulic fracturing.