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- Title
A Model of Joint Rock–Proppant Deformation in Hydraulic Fracturing.
- Authors
Zhurkina, D. S.; Lavrikov, S. V.; Revuzhenko, A. F.
- Abstract
The study focuses on the connection between two processes: deformation of proppant under the action of rock pressure and the rock pressure change after injection pressure release. The modeling of proppant deformation (mechanics of granular medium) uses the discrete element method, and the rock pressure redistribution (rock mechanics) is modeled using the earlier developed model of rock as a medium with internal energy sources and sinks, and the finite element method. The numerical modeling shows that depending on the loading history and on the rock mass properties, the mode of deformation can be both stable and unstable. For the stable mode of deformation, the pressure balance is calculated at the created fracture boundary, and the change in the proppant porosity is estimated. In the unstable mode, rock mass experiences dynamic events induced by rock pressure.
- Subjects
HYDRAULIC fracturing; DEFORMATIONS (Mechanics); ROCK pressure; POROSITY; FINITE element method
- Publication
Journal of Mining Science, 2023, Vol 59, Issue 5, p713
- ISSN
1062-7391
- Publication type
Article
- DOI
10.1134/S1062739123050022