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Analytical solution and Bayesian inference for interference pumping tests in fractal dual-porosity media.
- Source :
-
Computational Geosciences . Feb2018, Vol. 22 Issue 1, p413-421. 9p. - Publication Year :
- 2018
-
Abstract
- A new analytical solution is developed for interference hydraulic pumping tests in fractal fractured porous media using the dual-porosity concept. Heterogeneous fractured reservoirs are considered with hydrodynamic parameters assumed to follow power-law functions in radial distance. The developed analytical solution is verified by comparison against a finite volume numerical solution. The comparison shows that the numerical solution converges toward the analytical one when the size of the time step decreases. The applicability of the fractal dual-porosity model is then assessed by investigating the identifiability of the parameters from a synthetic interference pumping test with a set of noisy data using Bayesian parameter inference. The results show that if the storage coefficient in the matrix is fixed, the rest of the parameters can be appropriately inferred; otherwise, the identification of the parameters is faced with convergence problems because of equifinality issues. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14200597
- Volume :
- 22
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Computational Geosciences
- Publication Type :
- Academic Journal
- Accession number :
- 128019880
- Full Text :
- https://doi.org/10.1007/s10596-017-9701-9