Consolidation around a borehole embedded in media with double porosity under release of geostatic stresses
✍ Scribed by X. Li
- Book ID
- 104272947
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 168 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0093-6413
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✦ Synopsis
The paper deals with the stress, displacement, pore and fissure pressures fields induced by the drilling and/or the pressurization of a vertical borehole in a formation of water-saturated porous media with double porosity. The solution includes the boundary condition of non-hydrostatic in situ state of stress. The solid skeleton is assumed to behave as a linearly poroelastic material with compressible constituents. The analytical solution is derived in LaplaceÕs space and transformed to the time domain using a numerical inversion technique. The histories of pore and fissure pressures are illustrated to show the influence of permeabilities of the pore and fissure systems.