Poroelastic modeling of seismic boundary conditions across afracture
Conference
·
OSTI ID:920346
A fracture within a porous background is modeled as a thin porous layer with increased compliance and finite permeability. For small layer thickness, a set of boundary conditions can be derived that relate particle velocity and stress across a fracture, induced by incident poroelastic waves. These boundary conditions are given via phenomenological parameters that can be used to examine and characterize the seismic response of a fracture. One of these parameters, here it is called membrane permeability, is shown through several examples to control the scattering amplitude of the slow P waves for very low-permeability fractures, which in turn controls the intrinsic attenuation of the waves.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director. Office of Science. Basic EnergySciences
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 920346
- Report Number(s):
- LBNL-60862; R&D Project: 468106; BnR: KC0303010; TRN: US200818%%1148
- Resource Relation:
- Conference: Meeting of the Society Exploration Geophysicists,New Orleans, LA, 1-6 October 2006
- Country of Publication:
- United States
- Language:
- English
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